CN109962491A

CN109962491A - Fault processing method and fault processing device for converter of wind generating set

Info

Publication number: CN109962491A
Application number: CN201711407436.2A
Authority: CN
Inventors: 李学品; 张涛; 王伟
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2019-07-02
Anticipated expiration: 2037-12-22
Also published as: CN109962491B

Abstract

The invention provides a fault processing method and a fault processing device for a converter of a wind generating set. The fault processing method comprises the following steps: detecting whether the converter has a fault; when at least one fault of the converter is detected, determining a fault level corresponding to each fault in the at least one fault; determining a highest fault level of all the determined fault levels; and executing fault processing corresponding to the highest fault level. By adopting the fault processing method and the fault processing device for the converter of the wind generating set, different fault processing can be executed by determining different levels of faults of the converter, so that the loss caused by frequent shutdown of the wind generating set due to faults can be avoided.

Description

The fault handling method and fault treating apparatus of the current transformer of wind power generating set

Technical field

The present invention relates to a kind of fault handling method and devices, more particularly, are related to a kind of change of wind power generating set Flow the fault handling method and fault treating apparatus of device.

Background technique

For the important component in wind power generating set, once breaking down, consider for safety etc., it will usually directly make Wind power generating set is shut down.For example, wind power generating set can directly stop when the current transformer in wind power generating set breaks down Machine, at this point, the breaker in wind power generating set can be also disconnected, when maintenance personal repair and restart wind power generating set it Afterwards, wind power generating set can just operate normally, hence into generating state.

However, wind power generating set is generally mounted to the more severe place of environment (for example, being installed on big marine), because This, when the component in wind power generating set breaks down and wind power generating set is caused to be shut down, maintenance personal is difficult to arrive in time Maintenance failure is removed up to the infield of wind power generating set, is in shutdown status for a long time so as to cause wind power generating set.And The long-time shutdown of wind power generating set can cause very big loss to user.

Therefore, the troubleshooting mode of the current transformer in above-mentioned wind power generating set can cause greater loss to user.

Summary of the invention

A kind of troubleshooting of the current transformer for being designed to provide wind power generating set of exemplary embodiment of the present invention Method and fault treating apparatus.The fault handling method and fault treating apparatus can execute difference according to the difference of failure Troubleshooting, to avoid wind power generating set loss caused by frequent shutdown due to failure.

One side according to an exemplary embodiment of the present invention provides a kind of troubleshooting of the current transformer of wind power generating set Method, which is characterized in that the fault handling method includes: whether detection current transformer breaks down；When detecting that current transformer goes out When at least one existing failure, fault level corresponding to each failure at least one described failure is determined；It executes with institute really The corresponding troubleshooting of highest fault level described in fixed all fault levels.

Optionally, fault level corresponding to each failure is determined according at least one of the following: the failure The degree of the temperature change of current transformer caused by the degree of the curent change of caused current transformer, the failure, the failure institute The type of the device of the failure occurs in the degree of the voltage change of caused current transformer, current transformer, wherein with each failure etc. The corresponding failure of grade includes one or more failures.

Optionally, fault level includes not fault tolerant class failure, the fault tolerant class failure, orderly closedown that grade successively reduces Class failure, downrating class failure, resistance safe mode class failure and abnormal prompt class failure.

Optionally, when the highest fault level be not fault tolerant class failure when, execute troubleshooting the step of include: to make Wind power generating set emergency stop；Show Fisrt fault prompt information corresponding with not fault tolerant class failure.

Optionally, when the highest fault level be fault tolerant class failure when, execute troubleshooting the step of include: to make wind Power generator group emergency stop；Show the first warning message corresponding with fault tolerant class failure；To the unsteady flow of wind power generating set Device carries out self-test, wherein the self-test detects whether highest failure disappears in the first predetermined amount of time, wherein the highest Failure is failure corresponding with the highest fault level；When determining that the highest failure does not disappear by the self-test, show Show the second fault cues information corresponding with fault tolerant class failure；When determining the highest failure vanishes by the self-test, So that wind power generating set is restored normal operating condition, and no longer shows first warning message.

Optionally, when the highest fault level be orderly closedown class failure when, execute troubleshooting the step of include: aobvious Show the second warning message corresponding with orderly closedown class failure；The hair of wind power generating set is reduced according to the first predetermined way Electrical power, until the generated output of wind power generating set is reduced to zero；Keep the sub- current transformer of the pusher side in current transformer out of service；Make The sub- current transformer of net side in current transformer is out of service；Self-test is carried out to the current transformer of wind power generating set, wherein the self-test exists Whether detection highest failure disappears in first predetermined amount of time, wherein the highest failure is and the highest fault level pair The failure answered；When determining that the highest failure does not disappear by the self-test, corresponding with orderly closedown class failure the is shown Three fault cues information；When determining the failure vanishes by the self-test, wind power generating set is made to restore to operate normally shape State, and no longer show second warning message.

Optionally, when the highest fault level be downrating class failure when, execute troubleshooting the step of include: Based on highest failure corresponding with the highest fault level, the predetermined power generation function that wind power generating set needs to be lowered to is determined Rate；The generated output of wind power generating set is reduced to the predetermined generated output according to the second predetermined way, and described in display Predetermined generated output and third warning message corresponding with downrating class failure；Come according to the first predetermined period all Detect to phase property whether the highest failure disappears；It, will according to third predetermined way when detecting the highest failure vanishes The generated output of wind power generating set is increased to normal power generation power, and no longer shows the third warning message；When When detecting that the highest failure does not disappear, the generated output of wind power generating set is made to remain the predetermined generated output.

Optionally, when the highest fault level be resistance safe mode class failure when, execute troubleshooting the step of wrap Include: display the 4th warning message corresponding with resistance safe mode class failure reduces wind-force hair according to the first predetermined way The generated output of motor group, and periodically detect whether highest failure disappears according to the second predetermined period, wherein it is described most High failure is failure corresponding with the highest failure rank；When detecting that the highest failure disappears in third predetermined amount of time When mistake, the generated output of wind power generating set is increased to normal power generation power according to the 4th predetermined way；When predetermined in third When detecting that the highest failure does not disappear in the period, make wind power generating set emergency stop, and show and resistance safe mode class The corresponding 4th fault cues information of failure.

Optionally, when the highest fault level be abnormal prompt class failure when, execute troubleshooting the step of include: aobvious Show the 5th warning message corresponding with abnormal prompt class failure；Highest event is periodically detected according to third predetermined period Whether barrier disappears, wherein the highest failure is failure corresponding with the highest fault level；When detecting the highest therefore When barrier disappears, the 5th warning message is no longer shown；When detecting that the highest failure does not disappear, described the is kept The display of five warning messages.

Optionally, the step of whether detection current transformer breaks down includes: periodically to examine according to the 4th predetermined period Survey whether current transformer breaks down, wherein the step of determining fault level includes: that ought detect that in one cycle current transformer goes out When at least one existing failure, within one period, event corresponding to each failure at least one described failure is determined Hinder grade, wherein the step of determining highest fault level includes: to determine that identified institute is faulty within one period Highest fault level in grade, wherein the step of executing troubleshooting include: determined out of one the period it is described most The time of high fault level executes troubleshooting corresponding with the highest fault level.

Optionally, if being carrying out failure corresponding with the highest fault level in the step of executing troubleshooting During processing, in another period after one period, detected in detecting the step of whether current transformer breaks down To new failure, and determines in new failure to exist to have in the step of determining highest fault level and be higher than described highest failure etc. The failure of the new highest fault level of grade stops corresponding with the highest fault level then in the step of executing troubleshooting Troubleshooting, and start to execute troubleshooting corresponding with the new highest fault level.

Another aspect according to an exemplary embodiment of the present invention, at the failure that a kind of current transformer of wind power generating set is provided Manage device, which is characterized in that the fault treating apparatus includes: detection unit, is configured as whether detection current transformer event occurs Barrier；Fault level determination unit is configured as when detection unit detects that at least one failure occurs in current transformer, described in determination Fault level corresponding to each failure at least one failure, and determine the highest event in identified all fault levels Hinder grade；Fault processing unit is configured as executing troubleshooting corresponding with the highest fault level.

Optionally, fault level determination unit is determined according at least one of the following corresponding to each failure Fault level: the temperature change of current transformer caused by the degree of the curent change of current transformer caused by the failure, the failure Degree, the degree of the voltage change of current transformer caused by the failure, occur in current transformer the failure device type, In, failure corresponding with each fault level includes one or more failures.

Optionally, fault processing unit includes at least one of following fault processing module, each troubleshooting mould Block includes: Fisrt fault processing module, for making wind-driven generator when the highest fault level is not fault tolerant class failure Group emergency stop；Show Fisrt fault prompt information corresponding with not fault tolerant class failure；Second fault processing module, for when described When highest fault level is fault tolerant class failure, make wind power generating set emergency stop；Display corresponding with fault tolerant class failure first Warning message；Self-test is carried out to the current transformer of wind power generating set, wherein the self-test is examined in the first predetermined amount of time Survey whether highest failure disappears；When determining that the highest failure does not disappear by the self-test, display and fault tolerant class failure Corresponding second fault cues information；When determining the highest failure vanishes by the self-test, keep wind power generating set extensive Multiple normal operating condition, and no longer show first warning message；Third fault processing module is used for described in most When high fault level is orderly closedown class failure, the second warning message corresponding with orderly closedown class failure is shown；According to First predetermined way reduces the generated output of wind power generating set, until the generated output of wind power generating set is reduced to zero；Make The sub- current transformer of pusher side in current transformer is out of service；Keep the sub- current transformer of the net side in current transformer out of service；To wind-driven generator The current transformer of group carries out self-test, wherein the self-test detects whether highest failure disappears in the first predetermined amount of time；When passing through When the self-test determines that the highest failure does not disappear, third fault cues information corresponding with orderly closedown class failure is shown； When determining the failure vanishes by the self-test, wind power generating set is set to restore normal operating condition, and no longer show Second warning message；4th fault processing module, for being the event of downrating class when the highest fault level When barrier, it is based on highest failure corresponding with the highest fault level, determines that wind power generating set needs to be lowered to predetermined Generated output；The generated output of wind power generating set is reduced to the predetermined generated output according to the second predetermined way, and is shown Show the predetermined generated output and third warning message corresponding with downrating class failure；According to the first predetermined week Phase periodically detects whether the highest failure disappears；It is predetermined according to third when detecting the highest failure vanishes The generated output of wind power generating set is increased to normal power generation power by mode, and no longer shows the third warning prompt letter Breath；When detecting that the highest failure does not disappear, the generated output of wind power generating set is made to remain the predetermined power generation function Rate；5th fault processing module, for when the highest fault level is resistance safe mode class failure, display to be pacified with resistance Corresponding 4th warning message of syntype class failure reduces the power generation function of wind power generating set according to the first predetermined way Rate, and periodically detect whether highest failure disappears according to the second predetermined period, wherein the highest failure be with it is described The corresponding failure of highest failure rank；When detecting the highest failure vanishes in third predetermined amount of time, according to the 4th The generated output of wind power generating set is increased to normal power generation power by predetermined way；It is detected when in third predetermined amount of time When the highest failure does not disappear, make wind power generating set emergency stop, and show the corresponding with resistance safe mode class failure the 4th Fault cues information；6th fault processing module, for when the highest fault level be abnormal prompt class failure when, display with Corresponding 5th warning message of abnormal prompt class failure；Highest failure is periodically detected according to third predetermined period is No disappearance；When detecting the highest failure vanishes, the 5th warning message is no longer shown；When detect it is described most When high failure does not disappear, the display of the 5th warning message is kept；Wherein, the highest failure is and the highest event Hinder the corresponding failure of grade.

Another aspect according to an exemplary embodiment of the present invention provides and a kind of is stored with the computer-readable of computer program Storage medium, at the failure that the computer program realizes the current transformer of above-mentioned wind power generating set when being executed by processor Reason method.

Another aspect according to an exemplary embodiment of the present invention provides a kind of control system of wind power generating set, special Sign is that the control system includes: processor；Memory is stored with computer program, when the computer program is processed When device executes, the fault handling method of the current transformer of above-mentioned wind power generating set is realized.

Fault handling method and troubleshooting using the current transformer of the wind power generating set of exemplary embodiment of the present Device, can be by the different brackets of the failure of determining current transformer, to execute different troubleshootings, so as to avoid wind-force Generating set loss caused by frequent shutdown due to failure.

Detailed description of the invention

By below with reference to be exemplarily illustrated embodiment attached drawing carry out description, exemplary embodiment of the present it is upper Stating will become apparent with other purposes and feature, in which:

Fig. 1 shows the process of the fault handling method of the current transformer of the wind power generating set of embodiment according to the present invention Figure；

Fig. 2 shows execute event in the fault handling method of the current transformer of the wind power generating set of embodiment according to the present invention Hinder the flow chart of processing step；

Fig. 3 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps；

Fig. 4 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps；

Fig. 5 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps；

Fig. 6 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps；

Fig. 7 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps；

Fig. 8 shows the block diagram of the fault treating apparatus of the current transformer of the wind power generating set of embodiment according to the present invention.

Specific embodiment

Hereinafter, the exemplary embodiment that the present invention is more fully described with reference to the accompanying drawings, exemplary embodiment is in the accompanying drawings It shows.However, it is possible to be embodied in many different forms exemplary embodiment, and should not be construed as being limited to illustrate herein Exemplary embodiment.On the contrary, these embodiments are provided so that the disclosure will be thorough and complete, and will fully will be exemplary The range of embodiment is communicated to those skilled in the art.

Fig. 1 shows the process of the fault handling method of the current transformer of the wind power generating set of embodiment according to the present invention Figure.

Referring to Fig.1, in S100, detect whether current transformer breaks down.Here, wind-power electricity generation can be detected in any manner Whether the current transformer of unit breaks down.

When detecting that at least one failure occurs in current transformer in S100, S200 is executed: determining at least one described event Fault level corresponding to each failure in barrier.Here, one or more failures be may detect that in S100, when detecting When one or more failures, fault level corresponding to each failure can be determined in s 200.As an example, with each failure etc. The corresponding failure of grade may include one or more failures.

Here, fault level can indicate the severity of failure.As an example, fault level may include that grade successively reduces Not fault tolerant class failure, fault tolerant class failure, orderly closedown class failure, downrating class failure, resistance safe mode class Failure and abnormal prompt class failure.

Fault level belonging to failure can be determined according to many factors.As an example, can according in following item extremely One item missing determines fault level corresponding to each failure: the degree of the curent change of current transformer caused by the failure, should Degree, the unsteady flow of the voltage change of current transformer caused by the degree of the temperature change of current transformer caused by failure, the failure The type of the device of the failure occurs in device.

Here, the current transformer of wind power generating set includes the sub- current transformer of pusher side and the sub- current transformer of net side and connection pusher side The busbar of current transformer and the sub- current transformer of net side.The electric current (voltage) that is input in the sub- current transformer of pusher side and defeated from the sub- current transformer of net side Electric current (voltage) out is three-phase current (voltage), and the electric current (voltage) in busbar is DC current (voltage).Failure can be led The electric current (voltage) for causing the electric current (voltage) being input in the sub- current transformer of pusher side and/or exporting from the sub- current transformer of net side is abnormal.Cause This, as an example, current transformer caused by the degree and/or failure of the curent change of the current transformer according to caused by failure The degree of voltage change determine fault level.

For example, exporting when any one phase current (voltage) that be input in the sub- current transformer of pusher side or from the sub- current transformer of net side When the current value (voltage value) of any one phase current (voltage) excessively high (for example, being higher than predetermined threshold electric current (voltage)), illustrate wind The power generation of power generator group occurs obvious abnormal and there are great security risks, at this point, can be by this electricity for leading to current transformer The failure that the degree of stream (voltage) variation is excessive is classified as higher ranked fault tolerant class failure.And in following example, work as machine Excessive (the example of electric current (voltage) difference between any two-phase in the three-phase current (voltage) of the sub- current transformer in side or the sub- current transformer of net side Such as, it is greater than predetermined difference value) when, although obvious exception occurs in the power generation of wind power generating set, usually there is no great Security risk, thus the excessive failure of this electric current (voltage) difference can be classified as to the orderly closedown class event of a low grade at this time Barrier.

In addition, the sub- current transformer of pusher side, the sub- current transformer of net side and detection unit in current transformer (or can be described as automatic list Member) detectable busbar DC voltage, in one example, when widely different (for example, being greater than between the voltage of three's detection Predetermined threshold difference) when, this failure can be classified as to orderly closedown class failure.

As another example, fault level can be determined by considering to occur in current transformer the type of the device of the failure. For example, failure can be classified as to the highest not fault tolerant class failure of grade when the important devices in current transformer break down.Example Such as, when the direct current in current transformer fastly perhaps exchange it is fast hold break down when, fault level can be classified as to grade is highest can not Fault-tolerant class failure.When some secondary important devices (for example, lightning-protection module) in current transformer are broken down, which can be sorted out For orderly closedown class failure.It, can when other secondary important devices (for example, some sensing elements) in current transformer are broken down According to whether being provided with its alternative other sensing elements in current transformer, by failure be classified as downrating class failure or Abnormal prompt class failure.When the grid side device of current transformer breaks down, failure can be classified as to the event of resistance safe mode class Barrier.

As another example, can comprehensively consider caused by the degree of the curent change of current transformer caused by failure, failure The degree of temperature change of current transformer, occur in current transformer the failure device type, determining corresponding to failure therefore Hinder grade.For example, when including in the driving plate failure as the important devices in current transformer and the failure that occurs When reviewing knowledge already acquired hinders, which can be classified as to higher ranked fault tolerant class failure.When the driving plate in current transformer breaks down simultaneously And when in the failure occurred including over current fault, which can be classified as to the highest not fault tolerant class failure of grade.

It should be understood that the mode of fault level corresponding to failure determined above is only example, it in practical applications, can root According to actual conditions, by different modes in conjunction with different because usually determining fault level corresponding to failure.

As an example, after setting up the corresponding relationship of failure and fault level, it can be by pair of failure and fault level It should be related to and be stored, so that in s 200, inspection can be determined according to the corresponding relationship between the failure of storage and fault level Fault level corresponding at least one failure measured.

In S300, the highest fault level in identified all fault levels in s 200 is determined.Here, when in S200 In determine corresponding to each failure that the current transformer of wind power generating set occurs to detect in S300 after fault level The highest highest fault level of grade out.

In S400, troubleshooting corresponding with the highest fault level is executed.Here, different fault levels can correspond to In different troubleshootings, executing troubleshooting corresponding with the highest fault level determined in S300 can utmostly be ensured The safety of wind power generating set etc..

It is described referring to Fig. 2, when the highest fault level determined in the S300 in Fig. 1 is not fault tolerant class failure When, the embodiment of troubleshooting is executed in S400.

Fig. 2 shows execute event in the fault handling method of the current transformer of the wind power generating set of embodiment according to the present invention Hinder the flow chart of processing step.

It can make wind power generating set emergency stop in S411 referring to Fig. 2.Here, making wind power generating set emergency stop is to instigate wind-force Generating set emergency shutdown.In particular, as an example, wind power generating set emergency stop is made to be to instigate the open circuit of wind power generating set Device disconnects, and the sub- current transformer of the pusher side in the current transformer of wind power generating set and the sub- current transformer of net side is made to enter envelope pulse condition, and The blade of wind power generating set is set to put away the oars.Here, it disconnects the breaker of wind power generating set and instigates wind power generating set Net side breaker and pusher side breaker simultaneously switch off.

In S412, Fisrt fault prompt information corresponding with not fault tolerant class failure can be shown.

Here, since determining highest fault level is the highest not fault tolerant class failure of grade, it can directly make wind Power generator group emergency stop and fault cues information is shown to user, that is, display is corresponding with not fault tolerant class failure first former Hinder prompt information.

It is described referring to Fig. 3, when the highest fault level determined in the S300 in Fig. 1 is fault tolerant class failure, The embodiment of troubleshooting is executed in S400.

Fig. 3 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps.

It can make wind power generating set emergency stop in S421 referring to Fig. 3.Here, since highest fault level is higher ranked Therefore fault tolerant class failure can make wind power generating set emergency stop first.

In S422, the first warning message corresponding with fault tolerant class failure can be shown.Here, make wind-driven generator Warning message can be shown to user while group emergency stop, that is, display the first warning prompt corresponding with fault tolerant class failure Information.Here, warning message and fault cues information the difference is that: warning message is for prompting user to become Device is flowed to break down, but failure is possible to disappear, and fault cues information is for prompting the appearance of user's current transformer that can not eliminate Failure, the personnel that need repairing maintenance.

In S423, self-test can be carried out to the current transformer of wind power generating set.Wherein, the self-test is in the first predetermined amount of time Whether interior detection highest failure disappears, wherein the highest failure is failure corresponding with the highest fault level.

For example, can be detected in several seconds since the time for starting to show the first warning message and not fault tolerant Whether the corresponding highest failure of class failure disappears.It should be understood that the length of the first predetermined amount of time can be arranged according to the actual situation Degree.

When determining that the highest failure does not disappear by the self-test in S423, executable S424: being shown and can hold The corresponding second fault cues information of wrong class failure.Here, when determining when the first predetermined amount of time internal fault does not disappear, can recognize It is lasting existing failure for failure, at this point, display warning message can be substituted in the s 424 (that is, the first warning prompt is believed Breath), and show fault cues information to user, i.e., the second fault cues letter corresponding with fault tolerant class failure is shown to user Breath.Here, the second fault cues information may differ from the Fisrt fault prompt information in the embodiment of Fig. 2.

When determining the highest failure vanishes by the self-test in S423, executable S425: make wind-driven generator Group restores normal operating condition, and no longer shows first warning message.Here, when determining in the first predetermined time When section internal fault disappears, it may be determined that failure no longer exists, at this point, wind power generating set can be made to restore normal operating condition, without Warning message (that is, first warning message) is shown again.

In addition, in another embodiment, before the self-test for executing S423, may further determine that in the second predetermined amount of time is The no self-test that pre-determined number has been carried out.And described make a reservation for has been carried out in second predetermined amount of time when determining When the self-test of number, the step of wind power generating set emergency stop is without executing self-test can be made；When determining in second predetermined time In section when not yet carrying out the self-test of the pre-determined number, the step of self-test can be performed.

Here, the second predetermined amount of time is many than the first predetermined time segment length.For example, it may be determined that being executed within one day The number of self-test corresponding with fault tolerant class failure, when the number for executing self-test reaches pre-determined number, it is believed that fault tolerant The step of appearance of class failure is excessively frequent, can make wind power generating set emergency stop at this time and or else execute self-test；When execution self-test Number when being not up to pre-determined number, the step of self-test of fault tolerant class failure can be performed.

It is described referring to Fig. 4, when the highest fault level determined in the S300 in Fig. 1 is orderly closedown class failure When, the embodiment of troubleshooting is executed in S400.

Fig. 4 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps.

The second warning message corresponding with orderly closedown class failure can be shown in S431 referring to Fig. 4.Here, second Warning message may differ from the first warning message in the embodiment of Fig. 3.

In S432, the generated output of wind power generating set is reduced according to the first predetermined way, until wind power generating set Generated output is reduced to zero.

Here, can start to reduce wind-power electricity generation according to the first predetermined way when starting to show the second warning message The generated output of unit.For example, curve can be reduced according to predetermined generated output, the generated output of wind power generating set is reduced to Zero.For example, the curve can be the curve that the size of instruction generated output changes over time.

In S433, keep the sub- current transformer of the pusher side in current transformer out of service.

In S434, keep the sub- current transformer of the net side in current transformer out of service.

Here, the current transformer of wind power generating set includes the sub- current transformer of pusher side and the sub- current transformer of net side, in order to guarantee safety, It can first make the sub- current transformer of pusher side out of service, make the sub- current transformer of net side out of service later.

In S435, self-test is carried out to current transformer, wherein the self-test detects highest failure in the first predetermined amount of time is No disappearance, wherein the highest failure is failure corresponding with the highest fault level.Here, and in the embodiment of Fig. 3 S423 is similar, for example, can detect in several seconds since the time for starting to show the second warning message and normally stop Whether the corresponding highest failure of machine class failure disappears.And the length of the first predetermined amount of time can be set according to the actual situation.

When determining that the highest failure does not disappear by the self-test in S435, S436 can be performed: showing and is normal Shut down the corresponding third fault cues information of class failure.At this point, not turning off the breaker of wind power generating set.Here, work as determination When the first predetermined amount of time internal fault does not disappear, it is believed that failure is to continue existing failure, at this point, can substitute in S436 Warning message (that is, second warning message) shows fault cues information to user, i.e., shows to user and normal Shut down the corresponding third fault cues information of class failure.Here, third fault cues information may differ from the embodiment of Fig. 2 The second fault cues information in Fisrt fault prompt information and the embodiment of Fig. 3.

When determining the highest failure vanishes by the self-test in S435, executable S437: make wind-driven generator Group restores normal operating condition, and no longer shows second warning message.Here, when determining in the first predetermined time When section internal fault disappears, it may be determined that failure no longer exists, at this point, wind power generating set can be made to restore normal operating condition, without Warning message (that is, second warning message) is shown again.For example, wind power generating set can be made to restore according to the following steps Normal operating condition: make the sub- current transformer operation of the net side in current transformer, make the sub- current transformer operation of the pusher side in current transformer, make wind-force The generated output of generating set is increased to normal power generation power.

In addition, in another embodiment, before executing the self-test in S435, may further determine that in the second predetermined amount of time Whether the self-test of pre-determined number is had been carried out.And it determining ought be had been carried out in second predetermined amount of time described pre- When determining the self-test of number, wind power generating set can be made to keep generated output zero and the sub- current transformer of pusher side and net side in current transformer Sub- current transformer state out of service, without the step of executing self-test；When determine in second predetermined amount of time not yet into When the self-test of the row pre-determined number, the step of self-test can be performed.

Here, the second predetermined amount of time is many than the first predetermined time segment length.For example, it may be determined that being executed within one day The number of self-test corresponding with orderly closedown class failure, when the number for executing self-test reaches pre-determined number, it is believed that normal The appearance for shutting down class failure is excessively frequent, and wind power generating set can be made to keep the pusher side in generated output zero and current transformer at this time Sub- current transformer and the sub- current transformer of net side state out of service, and the step of or else executing self-test；When execute self-test number not When reaching pre-determined number, can be performed orderly closedown class failure self-test the step of.

It is described referring to Fig. 5, when the highest fault level determined in the S300 in Fig. 1 is downrating class failure When, the embodiment of troubleshooting is executed in S400.

Fig. 5 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps.

It can be based on highest failure corresponding with the highest fault level, determine wind-driven generator in S441 referring to Fig. 5 Group needs the predetermined generated output being lowered to.

Here, highest level failure is downrating class failure, and specific event corresponding with downrating class failure There are many barrier is possible.It therefore, can be according to the predetermined power generation for determining that wind power generating set needs to be lowered to specific failure Power.

For example, when highest failure corresponding with downrating class failure is device excess temperature class failure, for example, device temperature When predetermined value (for example, 5 degrees Celsius high) higher than rated temperature, it may be determined that wind power generating set needs to be lowered to normal power generation function The 90% of rate.When highest failure corresponding with downrating class failure is device overcurrent class failure, for example, working as device current ratio The high predetermined ratio of rated current is (for example, when high 5%), it may be determined that wind power generating set needs to be lowered to normal power generation power 80%.When failure corresponding with downrating class failure is device failure, it may be determined that wind power generating set needs are lowered to The 95% of normal power generation power, and the device can be deactivated.

It should be understood that the wind-power electricity generation of determination above according to specific fault type corresponding with downrating class failure It is only example that unit, which needs the predetermined generated output being lowered to,.Specific failure and predetermined power generation can be set according to the actual situation The different corresponding relationships of power.

In S442, the generated output of wind power generating set can be reduced to the predetermined power generation function according to the second predetermined way Rate, and show the predetermined generated output and third warning message corresponding with downrating class failure.Here, Three warning messages may differ from second in the embodiment of the first warning message and Fig. 4 in the embodiment of Fig. 3 Warning message.

Since the grade of downrating class failure ratio orderly closedown class failure is low, thus, for example, can be according to than in Fig. 4 The gentler another generated output reduction curve of curve is reduced for reducing the generated output of the generated output of wind power generating set, To reduce the generated output of wind power generating set.For example, another generated output, which reduces curve, can be instruction generated output The curve that size changes over time.

In S443, periodically detect whether the highest failure disappears according to the first predetermined period.For example, can press During the generated output for reducing wind power generating set according to the second predetermined way, and by the power generation function of wind power generating set Rate is reduced to after predetermined generated output, is periodically detected according to the first predetermined period corresponding with downrating class failure Failure whether disappear.Here, the length of the first predetermined period can be set according to the actual situation.

When S443 detects the highest failure vanishes, executable S444: wind-force is sent out according to third predetermined way The generated output of motor group is increased to normal power generation power, and no longer shows the third warning message.

Here, it during reducing the generated output of wind power generating set according to the second predetermined way, or is inciting somebody to action The generated output of wind power generating set is reduced to after predetermined generated output when detecting highest failure vanishes, illustrates failure no longer In the presence of, therefore the generated output of wind power generating set can be increased to normal power generation power according to third predetermined way.For example, can According to the power lift curves with the gradual degree for reducing curve identical with above-mentioned another power, by wind power generating set Generated output is increased to normal power generation power.And at this point, due to failure vanishes, thus it can no longer show that third warning prompt is believed Breath.

When S443 detects that the highest failure does not disappear, executable S445: make the power generation function of wind power generating set Rate remains the predetermined generated output.Here, when by being periodically detected determining event corresponding with downrating class failure When barrier always exists, the predetermined generated output can be maintained, and maintain the display of third warning message.

It is described referring to Fig. 6, when the highest fault level determined in the S300 in Fig. 1 is the event of resistance safe mode class When barrier, the embodiment of troubleshooting is executed in S400.

Fig. 6 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps.

Referring to Fig. 6, in S451, the 4th warning message corresponding with resistance safe mode class failure is shown, according to the The generated output of one predetermined way reduction wind power generating set.Here, the 4th warning message may differ from the implementation in Fig. 3 Third in the embodiment of the first warning message in example, the second warning message in the embodiment of Fig. 4 and Fig. 5 Warning message.

For example, can start when starting to show four warning messages according to corresponding to first in the embodiment of Fig. 4 The generated output of predetermined way reduces curve, to reduce the generated output of wind-driven generator.

In S452, it can periodically detect whether highest failure disappears according to the second predetermined period, wherein the highest Failure is failure corresponding with the highest failure rank.

For example, can since start show the 4th warning message time third predetermined amount of time in, according to Second predetermined period periodically detects whether highest failure disappears.For example, the length of third predetermined amount of time can be 3 Second, it should be appreciated that can different values be set by the length of third predetermined amount of time according to the actual situation.

When detecting the highest failure vanishes in third predetermined amount of time in S452, S453 can be performed: according to The generated output of wind power generating set is increased to normal power generation power by the 4th predetermined way.Here, can according to have with it is above-mentioned Power reduces the power lift curves of the gradual degree of curve identical, and the generated output of wind power generating set is increased to normally Generated output.And at this point, due to failure vanishes, thus it can no longer show the 4th warning message.

When detecting that the highest failure does not disappear in third predetermined amount of time in S452, executable S454: make Wind power generating set emergency stop, and show the 4th fault cues information corresponding with resistance safe mode class failure.Here, the 4th event Barrier prompt information may differ from the Fisrt fault prompt information in the embodiment of Fig. 2, the second fault cues in the embodiment of Fig. 3 Third fault cues information in information and the embodiment of Fig. 4.It here, can be pre- according to second always as long as failure does not disappear Fixed cycle periodically detects failure, and continuously display 4th warning message.

It is described referring to Fig. 7, when the highest fault level determined in the S300 in Fig. 1 is abnormal prompt class failure When, the embodiment of troubleshooting is executed in S400.

Fig. 7 shows in the fault handling method of the current transformer of wind power generating set according to another embodiment of the present invention and holds The flow chart of row fault handling steps.

The 5th warning message corresponding with abnormal prompt class failure can be shown in S461 referring to Fig. 7.Here, the 5th Warning message may differ from the first warning message in the embodiment of Fig. 3, the second warning in the embodiment of Fig. 4 Third warning message in prompt information, the embodiment of Fig. 5 and the 4th warning message in the embodiment of Fig. 6.

In S462, it can periodically detect whether highest failure disappears according to third predetermined period, wherein the highest Failure is failure corresponding with the highest fault level.

Here, can while showing five warning messages, periodically detected according to third predetermined period with Whether the corresponding failure of abnormal prompt class failure disappears.Here, the length of third predetermined period can be set according to the actual situation.

When S462 detects the highest failure vanishes, executable S463: the 5th warning prompt is no longer shown Information.Here, when detecting highest failure vanishes, since failure no longer exists, warning message can be no longer shown (for example, the 5th warning message).

When S462 detects that the highest failure does not disappear, S464 can be performed: keeping the 5th warning prompt letter The display of breath.Here, as long as failure does not disappear, failure can be periodically detected according to third predetermined period always, and continue Show the 5th warning message.

In this embodiment, the generated output of wind power generating set can be made to be maintained normal power generation power.

Referring back to Fig. 1, in another embodiment, in order to find in time wind power generating set current transformer failure, can It is periodically detected the failure of the current transformer of wind power generating set.As an example, can come in S100 according to the 4th predetermined period all Detect to phase property whether current transformer breaks down.Here, the length of the 4th predetermined period can be set according to the actual situation.

In this case, when detecting that at least one failure occurs in current transformer in one cycle in S100, In S200 fault level corresponding to each failure at least one described failure can be determined within one period.And And the highest fault level in identified all fault levels can be determined within one period in S300.In S400 In since the time for determining the highest fault level in one period, execute it is corresponding with the highest fault level Troubleshooting.

In this case, it is determined in S300 to guarantee that in S400, performed troubleshooting always corresponds to The troubleshooting of highest fault level, as an example, if being carrying out in S400 corresponding with the highest fault level During troubleshooting, in another period after one period, new failure is detected in S100, and in S300 It determines there is the failure with the new highest fault level higher than the highest fault level in new failure, then can stop in S400 Only troubleshooting corresponding with the highest fault level, and start to execute at failure corresponding with the new highest fault level Reason.

Here, the period 4 is the detection cycle for detecting the failure of current transformer, and for specific every kind of failure, it is detected The period of survey can be the integral multiple of period 4.For example, when the detection cycle of current transformer is 1 second, it can be according to 1 second period It is periodically detected Fisrt fault, and detects second of failure according to 2 seconds periods (2 times of the period 4), according to 4 seconds Period (4 times of the period 1) detects the third failure etc..Therefore, (for example, the 4th second correspondence in some detection cycle Period in), may detect that multiple failures.

It should be understood that the period that the length of above-mentioned period 4 and specific failure are examined is only example, it can be according to reality The period that the period 4 is arranged in border situation and specific failure is detected.For example, the period that can be detected every kind of failure is arranged Within each period 4, all failures are detected in this case for the period 4.

It, can be by true using the fault handling method of the current transformer of the wind power generating set of exemplary embodiment of the present The different brackets of the failure of current transformer is determined, to execute different troubleshootings, so as to avoid wind power generating set due to event Hinder and the loss caused by frequent shutdown.

Referring to Fig. 8, the fault treating apparatus of the current transformer of the wind power generating set of an exemplary embodiment of the present invention It include: detection unit 100, fault level determination unit 200 and fault processing unit 300.

Detection unit 100 is configured as whether detection current transformer breaks down.Here, detection unit 100 can be by any Whether the current transformer that mode detects wind power generating set breaks down.

Fault level determination unit 200 is configured as detecting that at least one failure occurs in current transformer when detection unit 100 When, determine fault level corresponding to each failure at least one described failure, and institute determined by determining is faulty etc. Highest fault level in grade.Here, detection unit 100 may detect that one or more failures, when detecting one or more When a failure, fault level determination unit 200 can determine fault level corresponding to each failure.As an example, with each event Hindering the corresponding failure of grade may include one or more failures.

Fault level determination unit 200 can determine fault level belonging to failure according to many factors.As an example, Fault level determination unit 200 can determine fault level corresponding to each failure according at least one in following item: should The degree of the temperature change of current transformer caused by the degree of the curent change of current transformer caused by failure, the failure, the event The type of the device of the failure occurs in the degree of voltage change of current transformer caused by barrier, current transformer.

The example of the fault level of determining failure is described in detail referring to Fig.1, which is not described herein again.

Here, when fault level determination unit 200 determines each failure institute that the current transformer of wind power generating set occurs After corresponding fault level, fault level determination unit 200 can detect that the highest highest fault level of grade.

Fault processing unit 300 is configured as executing troubleshooting corresponding with the highest fault level.Here, different Fault level can correspond to different troubleshootings, fault processing unit 300 is executed to be determined with fault level determination unit 200 The corresponding troubleshooting of highest fault level can utmostly ensure the safety of wind power generating set etc..

In particular, in the first embodiment, when the highest fault level that fault level determination unit 200 determines be can not When fault-tolerant class failure, following troubleshooting is can be performed in fault processing unit 300: making wind power generating set emergency stop；Display with can not The corresponding Fisrt fault prompt information of fault-tolerant class failure.In this embodiment, as an example, fault processing unit 300 can pass through Fisrt fault processing module in fault processing unit 300 executes above-mentioned processing.

Here, making wind power generating set emergency stop is to instigate wind power generating set emergency shutdown.In particular, as an example, Making wind power generating set emergency stop is that the breaker of wind power generating set is instigated to disconnect, and makes the machine in the current transformer of wind power generating set The sub- current transformer in side and the sub- current transformer of net side enter envelope pulse condition, and the blade of wind power generating set is made to put away the oars.Here, make wind-force The breaker disconnection of generating set is that the net side breaker of wind power generating set and pusher side breaker is instigated to simultaneously switch off.

Here, since determining highest fault level is the highest not fault tolerant class failure of grade, troubleshooting list Member 300 can directly make wind power generating set emergency stop and show fault cues information to user, that is, display and the event of not fault tolerant class Hinder corresponding Fisrt fault prompt information.

In a second embodiment, when the highest fault level that fault level determination unit 200 determines is fault tolerant class failure When, following troubleshooting can be performed in fault processing unit 300: making wind power generating set emergency stop；Display and fault tolerant class failure pair The first warning message answered；Self-test is carried out to the current transformer of wind power generating set, wherein the self-test is in the first pre- timing Between in section detection highest failure whether disappear, wherein the highest failure is failure corresponding with the highest fault level；When When determining that the highest failure does not disappear by the self-test, the second fault cues letter corresponding with fault tolerant class failure is shown Breath；When determining the highest failure vanishes by the self-test, wind power generating set is set to restore normal operating condition, and not First warning message is shown again.In this embodiment, as an example, fault processing unit 300 can be by failure at The second fault processing module in unit 300 is managed to execute above-mentioned processing.

Here, since highest fault level is higher ranked fault tolerant class failure, fault processing unit 300 can Make wind power generating set emergency stop first.Also, fault processing unit 300 can be while making wind power generating set emergency stop to user Show warning message, that is, display the first warning message corresponding with fault tolerant class failure.

For example, fault processing unit 300 can be several seconds since the time for starting to show the first warning message It is interior to detect whether highest failure corresponding with not fault tolerant class failure disappears.It should be understood that can be arranged according to the actual situation The length of one predetermined amount of time.

When determining when the first predetermined amount of time internal fault does not disappear, it is believed that failure is lasting existing failure, at this point, The alternative display warning message (that is, first warning message) of fault processing unit 300, and show that failure mentions to user Show information, i.e., shows the second fault cues information corresponding with fault tolerant class failure to user.When determining in the first predetermined time When section internal fault disappears, it may be determined that failure no longer exists, at this point, fault processing unit 300 can be such that wind power generating set restores just Normal operating status, and no longer show warning message (that is, first warning message).

In addition, in another embodiment, fault processing unit 300 can also determine predetermined second before executing self-test Whether the self-test of pre-determined number is had been carried out in period；And when determination has carried out in second predetermined amount of time When the self-test of the pre-determined number, fault processing unit 300 can make the step of wind power generating set emergency stop is without executing self-test； When determining the self-test for not yet carrying out the pre-determined number in second predetermined amount of time, fault processing unit 300 can be held Row self-test.

Here, the second predetermined amount of time is many than the first predetermined time segment length.For example, fault processing unit 300 can be true It is scheduled on and performs the number of self-test corresponding with fault tolerant class failure within one day, when the number for executing self-test reaches pre-determined number When, it is believed that the appearance of fault tolerant class failure is excessively frequent, at this time fault processing unit 300 can make wind power generating set emergency stop and Or else the step of executing self-test；When the number for executing self-test is not up to pre-determined number, fault processing unit 300 is executable to be held The step of self-test of wrong class failure.

In the third embodiment, when the highest fault level that fault level determination unit 200 determines is the event of orderly closedown class When barrier, following troubleshooting is can be performed in fault processing unit 300: display the second warning prompt corresponding with orderly closedown class failure Information；The generated output that wind power generating set is reduced according to the first predetermined way, until the generated output of wind power generating set drops It is as low as zero；Keep the sub- current transformer of the pusher side in current transformer out of service；Keep the sub- current transformer of the net side in current transformer out of service；To change Flow device carry out self-test, wherein the self-test detects whether highest failure disappears in the first predetermined amount of time, wherein it is described most High failure is failure corresponding with the highest fault level；When determining that the highest failure does not disappear by the self-test, Show third fault cues information corresponding with orderly closedown class failure；When determining the failure vanishes by the self-test, So that wind power generating set is restored normal operating condition, and no longer shows second warning message.In this embodiment, As an example, fault processing unit 300 can execute above-mentioned place by the third fault processing module in fault processing unit 300 Reason.

Here, fault processing unit 300 can start when starting to show the second warning message according to the first predetermined party The generated output of formula reduction wind power generating set.For example, fault processing unit 300 can reduce curve according to predetermined generated output, The generated output of wind power generating set is reduced to zero.

The current transformer of wind power generating set includes the sub- current transformer of pusher side and the sub- current transformer of net side, can be first in order to guarantee safety Keep the sub- current transformer of pusher side out of service, makes the sub- current transformer of net side out of service later.

Fault processing unit 300 can detect in several seconds since the time for starting to show the second warning message Whether highest failure corresponding with orderly closedown class failure disappears.And the first predetermined amount of time can be set according to the actual situation Length.When fault processing unit 300 is determined when the first predetermined amount of time internal fault does not disappear, it is believed that failure is persistently to deposit Failure, at this point, the alternative warning message of fault processing unit 300 (that is, second warning message), to user It shows fault cues information, i.e., shows third fault cues information corresponding with orderly closedown class failure to user.At failure It manages unit 300 to determine when the first predetermined amount of time internal fault disappears, it may be determined that failure no longer exists, at this point, troubleshooting list Member 300 can make wind power generating set restore normal operating condition, and no longer show warning message (that is, the second warning prompt Information).For example, fault processing unit 300 can make wind power generating set restore normal operating condition according to the following steps: making unsteady flow The generated output that the sub- current transformer of net side in device runs, makes the sub- current transformer operation of the pusher side in current transformer, making wind power generating set It is increased to normal power generation power.

In addition, in another embodiment, fault processing unit 300 can determine before executing self-test in the second pre- timing Between the self-test of pre-determined number whether has been carried out in section；And when determination has been carried out in second predetermined amount of time When the self-test of the pre-determined number, fault processing unit 300 can make wind power generating set keep generated output zero and current transformer In the sub- current transformer of pusher side and the sub- current transformer of net side state out of service, without the step of executing self-test；When determining described When not yet carrying out the self-test of the pre-determined number in the second predetermined amount of time, self-test is can be performed in fault processing unit 300.

Here, the second predetermined amount of time is many than the first predetermined time segment length.For example, fault processing unit 300 can be true It is scheduled on and performs the number of self-test corresponding with orderly closedown class failure within one day, when the number for executing self-test reaches predetermined time When number, it is believed that the appearance of orderly closedown class failure is excessively frequent, and fault processing unit 300 can be such that wind power generating set protects at this time Holding generated output is zero and the sub- current transformer of pusher side in current transformer and the sub- current transformer of net side state out of service, and is or else executed The step of self-test；When the number for executing self-test is not up to pre-determined number, the event of orderly closedown class is can be performed in fault processing unit 300 The step of self-test of barrier.

In the fourth embodiment, when the highest fault level that fault level determination unit 200 determines is downrating class When failure, following troubleshooting is can be performed in fault processing unit 300: based on highest event corresponding with the highest fault level Barrier determines the predetermined generated output that wind power generating set needs to be lowered to；According to the second predetermined way by wind power generating set Generated output be reduced to the predetermined generated output, and show the predetermined generated output and with downrating class failure Corresponding third warning message；Periodically detect whether the highest failure disappears according to the first predetermined period；When When detecting the highest failure vanishes, the generated output of wind power generating set is increased to normally send out according to third predetermined way Electrical power, and no longer show the third warning message；When detecting that the highest failure does not disappear, send out wind-force The generated output of motor group remains the predetermined generated output.In this embodiment, as an example, fault processing unit 300 Above-mentioned processing can be executed by the 4th fault processing module in fault processing unit 300.

Here, highest level failure is downrating class failure, and specific event corresponding with downrating class failure There are many barrier is possible.Therefore, fault processing unit 300 can need to be dropped according to wind power generating set is determined with specific failure As low as predetermined generated output.

Since the grade of downrating class failure ratio orderly closedown class failure is low, thus, for example, fault processing unit 300 can be according to than reducing gentler another of curve in Fig. 4 for reducing the generated output of the generated output of wind power generating set Generated output reduces curve, to reduce the generated output of wind power generating set.For example, another generated output reduce curve can be with It is the curve for indicating the size of generated output and changing over time.

Fault processing unit 300 can be in the process for the generated output for reducing wind power generating set according to the second predetermined way In, and after the generated output of wind power generating set is reduced to predetermined generated output, come according to the first predetermined period all Detect to phase property whether failure corresponding with downrating class failure disappears.Here, first can be arranged according to the actual situation The length of predetermined period.

Here, it during reducing the generated output of wind power generating set according to the second predetermined way, or is inciting somebody to action The generated output of wind power generating set is reduced to after predetermined generated output when detecting highest failure vanishes, illustrates failure no longer In the presence of, therefore the generated output of wind power generating set can be increased to normally by fault processing unit 300 according to third predetermined way Generated output.For example, fault processing unit 300 can be according to having and above-mentioned another power reduces the gradual degree of curve identical The generated output of wind power generating set is increased to normal power generation power by power lift curves.And at this point, since failure disappears It loses, thus can no longer show third warning message.When fault processing unit 300 is determined and drop power by being periodically detected When the corresponding failure of operation class failure always exists, the predetermined generated output can be maintained, and maintain third warning message Display.

In the 5th embodiment, when the highest fault level that fault level determination unit 200 determines is resistance safe mode When class failure, following troubleshooting is can be performed in fault processing unit 300: display the corresponding with resistance safe mode class failure the 4th Warning message reduces the generated output of wind power generating set according to the first predetermined way, and comes according to the second predetermined period Periodically detect whether highest failure disappears, wherein the highest failure is failure corresponding with the highest failure rank； When detecting the highest failure vanishes in third predetermined amount of time, according to the 4th predetermined way by wind power generating set Generated output is increased to normal power generation power；When detecting that the highest failure does not disappear in third predetermined amount of time, make Wind power generating set emergency stop, and show the 4th fault cues information corresponding with resistance safe mode class failure.In this embodiment In, as an example, fault processing unit 300 can be executed by the 5th fault processing module in fault processing unit 300 State processing.

For example, fault processing unit 300 can start when starting to show four warning messages according to corresponding to Fig. 4 Embodiment in the first predetermined way generated output reduce curve, to reduce the generated output of wind power generating set.Failure Processing unit 300 can be in the third predetermined amount of time since the time for starting to show the 4th warning message, according to the Two predetermined periods periodically detect whether highest failure disappears.Fault processing unit 300 can according to have and above-mentioned power The power lift curves for reducing the gradual degree of curve identical, are increased to normal power generation for the generated output of wind power generating set Power.And at this point, due to failure vanishes, thus fault processing unit 300 can no longer show the 4th warning message.

In the sixth embodiment, the highest fault level that fault level determination unit 200 determines is abnormal prompt class failure When, following troubleshooting can be performed in fault processing unit 300: display the 5th warning prompt letter corresponding with abnormal prompt class failure Breath；Periodically detect whether highest failure disappears according to third predetermined period, wherein the highest failure be with it is described most The corresponding failure of high fault level；When detecting the highest failure vanishes, the 5th warning message is no longer shown； When detecting that the highest failure does not disappear, the display of the 5th warning message is kept.In this embodiment, as Example, fault processing unit 300 can execute above-mentioned processing by the 6th fault processing module in fault processing unit 300.

Here, fault processing unit 300 can be come while showing five warning messages according to third predetermined period Periodically detect whether failure corresponding with abnormal prompt class failure disappears.Here, third can be set according to the actual situation The length of predetermined period.When detecting highest failure vanishes, since failure no longer exists, fault processing unit 300 can No longer show warning message (for example, the 5th warning message).And if failure is wanted not disappear, fault processing unit 300 can periodically detect always failure, and continuously display 5th warning message according to third predetermined period.It is real herein It applies in example, fault processing unit 300 can make the generated output of wind power generating set be maintained normal power generation power.

In addition, according to another embodiment, in order to find in time wind power generating set current transformer failure, detection unit 100 can be periodically detected the failure of the current transformer of wind power generating set.As an example, detection unit 100 can be predetermined according to the 4th Period periodically detects whether current transformer breaks down.Here, the 4th predetermined period can be set according to the actual situation Length.

In this case, when detection unit 100 detects that at least one failure occurs in current transformer in one cycle, Fault level determination unit 200 can determine corresponding to each failure at least one described failure within one period Fault level, and can within one period, determine determined by highest fault level in all fault levels.Therefore Hinder processing unit 300 since the time for determining the highest fault level in one period, executes and the highest The corresponding troubleshooting of fault level.

In this case, in order to guarantee that troubleshooting performed by fault processing unit 300 always corresponds to failure etc. Grade determination unit 200 determine highest fault level troubleshooting, as an example, if fault processing unit 300 During executing troubleshooting corresponding with the highest fault level, in another period after one period, detection Unit 100 detects new failure, and fault level determination unit 200 determines in new failure to exist to have and is higher than the highest event Hinder the failure of the new highest fault level of grade, then fault processing unit 300 can stop corresponding with the highest fault level Troubleshooting, and start to execute troubleshooting corresponding with the new highest fault level.

It, can be by true using the fault treating apparatus of the current transformer of the wind power generating set of exemplary embodiment of the present The different brackets of the failure of current transformer is determined, to execute different troubleshootings, so as to avoid wind power generating set due to event Hinder and the loss caused by frequent shutdown.

An exemplary embodiment of the present invention also provides a kind of computer-readable storage medium for being stored with computer program Matter.At the failure that the computer program realizes the current transformer of wind power generating set as described above when being executed by processor Reason method.The computer readable recording medium is the arbitrary data storage device that can store the data read by computer system. The example of computer readable recording medium includes: read-only memory, random access memory, CD-ROM, tape, floppy disk, light Data storage device and carrier wave (such as being transmitted through wired or wireless transmission path by the data of internet).Computer-readable note Recording medium also can be distributed in the computer system of connection network, so that computer-readable code stores and executes in a distributed manner.This Outside, completing function program of the invention, code and code segment can be easily by the ordinary programmers in field related to the present invention It explains within the scope of the present invention.

An exemplary embodiment of the present invention also provides a kind of control system in wind power generating set.It should be sent out in wind-force The control system of motor group includes processor and memory.Memory is configured as storage computer program.The computer journey Sequence is executed by processor so that processor executes the journey of the fault handling method of the current transformer of wind power generating set as described above Sequence instruction.

In addition, each unit in the above-mentioned apparatus and equipment of an exemplary embodiment of the present invention can be implemented hardware Component or software module.In addition, those skilled in the art can the processing according to performed by each unit of restriction, for example, by making Each unit is realized with field programmable gate array (FPGA), specific integrated circuit (ASIC) or processor.

It should be noted that above each embodiment of the invention is only exemplary, and the present invention is not limited to this.Ability Field technique personnel are appreciated that without departing from the principles and spirit of the present invention, can change these embodiments, Wherein, the scope of the present invention limits in claim and its equivalent.

Claims

1. a kind of fault handling method of the current transformer of wind power generating set, which is characterized in that the fault handling method includes:

Whether detection current transformer breaks down；

When detecting that at least one failure occurs in current transformer, determine corresponding to each failure at least one described failure Fault level；

Execute troubleshooting corresponding with highest fault level in identified all fault levels.

2. fault handling method as described in claim 1, which is characterized in that determined according at least one of the following Fault level corresponding to each failure: caused by the degree of the curent change of current transformer caused by the failure, the failure The event occurs in the degree of the voltage change of current transformer caused by the degree of the temperature change of current transformer, the failure, current transformer The type of the device of barrier, wherein failure corresponding with each fault level includes one or more failures.

3. fault handling method as described in claim 1, which is characterized in that fault level include grade successively reduce can not Fault-tolerant class failure, fault tolerant class failure, orderly closedown class failure, downrating class failure, resistance safe mode class failure and Abnormal prompt class failure.

4. fault handling method as claimed in claim 3, which is characterized in that when the highest fault level is not fault tolerant class When failure, execute troubleshooting the step of include:

Make wind power generating set emergency stop；

Show Fisrt fault prompt information corresponding with not fault tolerant class failure.

5. fault handling method as claimed in claim 3, which is characterized in that when the highest fault level is the event of fault tolerant class When barrier, execute troubleshooting the step of include:

Make wind power generating set emergency stop；

Show the first warning message corresponding with fault tolerant class failure；

Self-test is carried out to the current transformer of wind power generating set, wherein the self-test detects highest event in the first predetermined amount of time Whether barrier disappears, wherein the highest failure is failure corresponding with the highest fault level；

When determining that the highest failure does not disappear by the self-test, show that the second failure corresponding with fault tolerant class failure mentions Show information；

When determining the highest failure vanishes by the self-test, wind power generating set is made to restore normal operating condition, and No longer show first warning message.

6. fault handling method as claimed in claim 3, which is characterized in that when the highest fault level is orderly closedown class When failure, execute troubleshooting the step of include:

Show the second warning message corresponding with orderly closedown class failure；

The generated output that wind power generating set is reduced according to the first predetermined way, until the generated output of wind power generating set reduces To zero；

Keep the sub- current transformer of the pusher side in current transformer out of service；

Keep the sub- current transformer of the net side in current transformer out of service；

When determining that the highest failure does not disappear by the self-test, third failure corresponding with orderly closedown class failure is shown Prompt information；

When determining the failure vanishes by the self-test, wind power generating set is set to restore normal operating condition, and no longer Show second warning message.

7. fault handling method as claimed in claim 3, which is characterized in that when the highest fault level is downrating When class failure, execute troubleshooting the step of include:

Based on highest failure corresponding with the highest fault level, the predetermined hair that wind power generating set needs to be lowered to is determined Electrical power；

The generated output of wind power generating set is reduced to the predetermined generated output according to the second predetermined way, and described in display Predetermined generated output and third warning message corresponding with downrating class failure；

Periodically detect whether the highest failure disappears according to the first predetermined period；

When detecting the highest failure vanishes, the generated output of wind power generating set is increased to according to third predetermined way Normal power generation power, and no longer show the third warning message；

When detecting that the highest failure does not disappear, the generated output of wind power generating set is made to remain the predetermined power generation function Rate.

8. fault handling method as claimed in claim 3, which is characterized in that when the highest fault level is the safe mould of resistance When formula class failure, execute troubleshooting the step of include:

It shows the 4th warning message corresponding with resistance safe mode class failure, reduces wind-force hair according to the first predetermined way The generated output of motor group, and periodically detect whether highest failure disappears according to the second predetermined period, wherein it is described most High failure is failure corresponding with the highest failure rank；

When detecting the highest failure vanishes in third predetermined amount of time, according to the 4th predetermined way by wind-driven generator The generated output of group is increased to normal power generation power；

When detecting that the highest failure does not disappear in third predetermined amount of time, make wind power generating set emergency stop, and show The 4th fault cues information corresponding with resistance safe mode class failure.

9. fault handling method as claimed in claim 3, which is characterized in that when the highest fault level is abnormal prompt class When failure, execute troubleshooting the step of include:

Show the 5th warning message corresponding with abnormal prompt class failure；

Periodically detect whether highest failure disappears according to third predetermined period, wherein the highest failure be with it is described The corresponding failure of highest fault level；

When detecting the highest failure vanishes, the 5th warning message is no longer shown；

When detecting that the highest failure does not disappear, the display of the 5th warning message is kept.

10. fault handling method as described in claim 1, which is characterized in that the step of whether detection current transformer breaks down It include: to periodically detect whether current transformer breaks down according to the 4th predetermined period,

Wherein it is determined that the step of fault level include: when detecting that at least one failure occurs in current transformer in one cycle, Within one period, fault level corresponding to each failure at least one described failure is determined,

Wherein it is determined that the step of highest fault level includes: to determine identified all fault levels within one period In highest fault level,

Wherein, executing the step of troubleshooting includes: the time that the highest fault level is determined out of one the period Start, executes troubleshooting corresponding with the highest fault level.

11. fault handling method as claimed in claim 10, which is characterized in that if in the step of executing troubleshooting just During executing troubleshooting corresponding with the highest fault level, in another period after one period, New failure is detected in the step of whether detection current transformer breaks down, and is determined in the step of determining highest fault level There is the failure with the new highest fault level higher than the highest fault level in new failure, is then executing troubleshooting In step, stop troubleshooting corresponding with the highest fault level, and starts to execute and the new highest fault level pair The troubleshooting answered.

12. a kind of fault treating apparatus of the current transformer of wind power generating set, which is characterized in that the fault treating apparatus packet It includes:

Detection unit, is configured as whether detection current transformer breaks down；

Fault level determination unit is configured as determining institute when detection unit detects that at least one failure occurs in current transformer Fault level corresponding to each failure at least one failure is stated, and determines the highest in identified all fault levels Fault level；

Fault processing unit is configured as executing troubleshooting corresponding with the highest fault level.

13. fault treating apparatus as claimed in claim 12, which is characterized in that fault level determination unit is according to the following terms In at least one of determine fault level corresponding to each failure: the journey of the curent change of current transformer caused by the failure Degree, the degree of the temperature change of current transformer caused by the failure, the degree of the voltage change of current transformer caused by the failure, The type of the device of the failure occurs in current transformer, wherein failure corresponding with each fault level includes one or more events Barrier.

14. fault treating apparatus as claimed in claim 13, which is characterized in that fault level includes that grade successively reduces not Fault tolerant class failure, fault tolerant class failure, orderly closedown class failure, downrating class failure, resistance safe mode class failure With abnormal prompt class failure.

15. fault treating apparatus as claimed in claim 14, which is characterized in that fault processing unit includes at following failure At least one of module is managed, each fault processing module includes:

Fisrt fault processing module, for making wind power generating set when the highest fault level is not fault tolerant class failure Emergency stop；Show Fisrt fault prompt information corresponding with not fault tolerant class failure；

Second fault processing module, for keeping wind power generating set anxious when the highest fault level is fault tolerant class failure Stop；Show the first warning message corresponding with fault tolerant class failure；Self-test is carried out to the current transformer of wind power generating set, In, the self-test detects whether highest failure disappears in the first predetermined amount of time；When determining the highest by the self-test When failure does not disappear, the second fault cues information corresponding with fault tolerant class failure is shown；Described in being determined by the self-test When highest failure vanishes, wind power generating set is made to restore normal operating condition, and no longer shows the first warning prompt letter Breath；

Third fault processing module is used for when the highest fault level is orderly closedown class failure, display and orderly closedown Corresponding second warning message of class failure；The generated output that wind power generating set is reduced according to the first predetermined way, until The generated output of wind power generating set is reduced to zero；Keep the sub- current transformer of the pusher side in current transformer out of service；Make in current transformer The sub- current transformer of net side is out of service；Self-test is carried out to the current transformer of wind power generating set, wherein the self-test is in the first pre- timing Between in section detection highest failure whether disappear；When determining that the highest failure does not disappear by the self-test, show and normal Shut down the corresponding third fault cues information of class failure；When determining the failure vanishes by the self-test, make wind-power electricity generation Unit restores normal operating condition, and no longer shows second warning message；

4th fault processing module, for when the highest fault level be downrating class failure when, based on it is described most The corresponding highest failure of high fault level determines the predetermined generated output that wind power generating set needs to be lowered to；According to second The generated output of wind power generating set is reduced to the predetermined generated output by predetermined way, and shows the predetermined generated output And third warning message corresponding with downrating class failure；According to the first predetermined period to periodically detect State whether highest failure disappears；When detecting the highest failure vanishes, according to third predetermined way by wind power generating set Generated output be increased to normal power generation power, and no longer show the third warning message；When detect it is described most When high failure does not disappear, the generated output of wind power generating set is made to remain the predetermined generated output；

5th fault processing module is used for when the highest fault level is resistance safe mode class failure, display and resistance Corresponding 4th warning message of safe mode class failure reduces the power generation function of wind power generating set according to the first predetermined way Rate, and periodically detect whether highest failure disappears according to the second predetermined period, wherein the highest failure be with it is described The corresponding failure of highest failure rank；When detecting the highest failure vanishes in third predetermined amount of time, according to the 4th The generated output of wind power generating set is increased to normal power generation power by predetermined way；It is detected when in third predetermined amount of time When the highest failure does not disappear, make wind power generating set emergency stop, and show the corresponding with resistance safe mode class failure the 4th Fault cues information；

6th fault processing module is used for when the highest fault level is abnormal prompt class failure, display and abnormal prompt Corresponding 5th warning message of class failure；Periodically detect whether highest failure disappears according to third predetermined period； When detecting the highest failure vanishes, the 5th warning message is no longer shown；When detecting the highest failure When not disappearing, the display of the 5th warning message is kept；

Wherein, the highest failure is failure corresponding with the highest fault level.

16. a kind of computer readable storage medium for being stored with computer program, when the computer program is held by processor Method described in any one in claim 1 to 11 is realized when row.

17. a kind of control system of wind power generating set, which is characterized in that the control system includes:

Processor；

Memory is stored with computer program, when the computer program is executed by processor, realizes claim 1 to 11 In any one described in method.