CN110176884B - Excitation starting method of excitation system and related device - Google Patents
Excitation starting method of excitation system and related device Download PDFInfo
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- CN110176884B CN110176884B CN201910481416.2A CN201910481416A CN110176884B CN 110176884 B CN110176884 B CN 110176884B CN 201910481416 A CN201910481416 A CN 201910481416A CN 110176884 B CN110176884 B CN 110176884B
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
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Abstract
The application discloses an excitation method of an excitation system, which comprises the steps of monitoring the generator terminal voltage of a generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion; if the time length is less than the preset time length, judging whether the excitation system meets the excitation system quitting condition or not after the monitoring system issues an excitation system input instruction; if the excitation system quitting condition is met, sending an excitation system cutting instruction to quit the excitation system; judging whether the excitation system meets the excitation system input condition after the monitoring system issues the excitation system input instruction for a second preset time; the second preset time length is longer than the first preset time length; and if the condition of inputting the excitation system is met, inputting the excitation system to activate the excitation system. The method can effectively improve the operation stability of the excitation system and improve the starting success rate of the unit. The application also discloses an excitation initiating device of the excitation system, the excitation system and a computer readable storage medium, which all have the technical effects.
Description
Technical Field
The application relates to the technical field of electric power, in particular to an excitation system excitation method; it also relates to an excitation system triggering device, an excitation system and a computer readable storage medium.
Background
With the development of electric power construction, electric power systems have entered the stage of large networks, high voltage, large units. The stability of the operation of the large-capacity unit is crucial to the stability and the safety of the whole power grid. Among them, the excitation system of the unit has the greatest influence on the stability of the generator. The excitation system not only guarantees the stable operation of the unit, but also is a lever for adjusting the reactive power and the voltage in the whole power grid. At present, for a UNITROL5000 excitation system, terminal voltage and excitation synchronous voltage of a generator are measured to serve as excitation starting conditions, if transient voltage interference occurs in any one measurement loop during excitation starting, a voltage value measured by the measurement loop exceeds excitation starting cut-off voltage due to the voltage interference, the excitation system can mistakenly consider that excitation starting is successful at the moment, and then a logic program of normal soft excitation is entered, but the terminal voltage and excitation current sampling values of the generator are zero during the period, after a certain time (usually 12 seconds) of soft excitation ending, the excitation system can misreport over-excitation limitation and rotor inverse time limit over-current limitation action to cause excitation system excitation starting failure, and excitation starting failure signals are not reported, so that the operation stability of the excitation system and the unit starting success rate are seriously influenced.
In view of this, how to provide an excitation system excitation starting scheme, improve the operation stability of an excitation system, and improve the starting success rate of a unit is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The application aims to provide an excitation system excitation method, which can effectively improve the operation stability of an excitation system and improve the starting success rate of a unit. Another object of the present application is to provide an excitation system excitation device, an excitation system, and a computer-readable storage medium, all of which have the above technical effects.
In order to solve the technical problem, the present application provides an excitation method of an excitation system, including:
monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion;
if the machine end voltage is smaller than the rated machine end voltage of the preset proportion, judging whether the excitation system meets the condition of de-excitation system after the monitoring system sends a first preset time after the excitation system puts in instructions;
if the excitation system meets the excitation system quitting condition, sending an excitation system cutting instruction to quit the excitation system;
judging whether the excitation system meets the excitation system input condition after a second preset time after the monitoring system issues the excitation system input instruction; the second preset time length is longer than the first preset time length;
and if the excitation system meets the condition of putting the excitation system into use, putting the excitation system into use to excite the excitation system.
Optionally, the excitation canceling system condition includes:
and receiving the excitation system input instruction, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of the preset proportion.
Optionally, the excitation system inputting condition includes:
and receiving the excitation system input instruction, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of the preset proportion.
Optionally, the method further includes:
judging whether the excitation system meets an excitation failure alarm condition after the monitoring system issues a third preset time after the excitation system input instruction; the third preset time length is longer than the second preset time length;
and if the excitation system meets the excitation failure alarm condition, carrying out excitation failure alarm on the excitation system.
Optionally, the excitation failure alarm condition includes:
the machine terminal voltage is smaller than the rated machine terminal voltage of the preset proportion, and no excitation failure signal exists.
Optionally, the method further includes:
if an excitation system quitting instruction issued by the monitoring system is received, quitting the excitation system;
and if the excitation failure signal exists, carrying out excitation failure alarm on the excitation system.
In order to solve the above technical problem, the present application further provides an excitation starting device of an excitation system, including:
the voltage monitoring module is used for monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage in a preset proportion;
the first judgment module is used for judging whether the excitation system meets the condition of de-excitation system after a first preset time after the excitation system is put into an instruction sent by the monitoring system if the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion;
the first execution module is used for sending an excitation system cutting instruction to enable the excitation system to exit if the excitation system meets the excitation system exiting condition;
the second judgment module is used for judging whether the excitation system meets the excitation system input condition after a second preset time length after the excitation system input instruction is issued by the monitoring system;
the second execution module is used for putting the excitation system into the excitation system to perform excitation system excitation if the excitation system meets the condition of putting the excitation system into the excitation system; the first preset time length is less than the second preset time length.
Optionally, the method further includes:
the third judgment module is used for judging whether the excitation system meets the excitation failure alarm condition after the monitoring system issues a third preset time after the excitation system input instruction; the third preset time length is longer than the second preset time length;
and the third execution module is used for alarming excitation system excitation failure if the excitation system meets the excitation system excitation failure alarm condition.
In order to solve the above technical problem, the present application further provides an excitation system, including:
a memory for storing a computer program;
a processor for implementing the steps of the excitation method of the excitation system as defined in any one of the above when executing said computer program.
In order to solve the technical problem, the present application further provides a computer-readable storage medium, which stores a computer program, and the computer program realizes the steps of the excitation method of the excitation system according to any one of the above items when being executed by a processor.
The excitation method of the excitation system comprises the steps of monitoring the generator terminal voltage of a generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage in a preset proportion; if the machine end voltage is smaller than the rated machine end voltage of the preset proportion, judging whether the excitation system meets the condition of de-excitation system after the monitoring system sends a first preset time after the excitation system puts in instructions; if the excitation system meets the excitation system quitting condition, sending an excitation system cutting instruction to quit the excitation system; judging whether the excitation system meets the excitation system input condition after a second preset time after the monitoring system issues the excitation system input instruction; the second preset time length is longer than the first preset time length; and if the excitation system meets the condition of putting the excitation system into use, putting the excitation system into use to excite the excitation system.
Therefore, the excitation starting method of the excitation system introduces the operation of secondary excitation starting, takes the generator terminal voltage of the generator as the condition of secondary excitation starting, and by monitoring the generator terminal voltage of the generator, when the generator terminal voltage is judged to be smaller than the rated voltage value of the preset proportion, namely when the primary excitation starting fails due to voltage interference, the excitation system can be quitted after the condition that the excitation system meets the excitation system quitting condition, and the excitation system is put in again when the condition that the excitation system meets the excitation system putting-in condition is judged, so that the excitation system put in again can realize normal excitation starting through secondary excitation starting, the operation stability of the excitation system can be effectively improved, and the starting success rate of the unit is improved.
The excitation device of the excitation system, the excitation system and the computer-readable storage medium provided by the application have the technical effects.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flowchart of an excitation method of an excitation system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an activation logic provided in accordance with an embodiment of the present application;
fig. 3 is a schematic diagram of an excitation device of an excitation system according to an embodiment of the present application.
Detailed Description
The core of the application is to provide the excitation system excitation method, which can effectively improve the operation stability of the excitation system and improve the starting success rate of the unit. Another core of the present application is to provide an excitation system excitation device, an excitation system, and a computer-readable storage medium, all having the above technical effects.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating an excitation method of an excitation system according to an embodiment of the present application; referring to fig. 1, the method of firing includes:
s101: monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion;
specifically, in the excitation system excitation starting process, voltage interference occurs in a measurement loop, which may cause the excitation system to mistakenly consider that the excitation starting is successful, and a normal soft excitation starting logic program is entered, and during this period, the collected value of the generator terminal voltage of the generator is always zero. Therefore, the excitation system can monitor the generator terminal voltage of the generator in real time, judge whether the excitation system fails to start excitation for the first time according to the generator terminal voltage of the generator, and use the rated voltage of which the generator terminal voltage is smaller than the preset proportion as a judgment condition for starting the excitation system for the second time. It should be noted that the excitation system failure is caused by voltage disturbance of the measurement loop, which is different from the excitation system failure caused by failure of the related electrical element.
The specific numerical values of the preset proportion are not limited uniquely, and can be set differently according to actual needs. Since the generator terminal voltage is always zero after the first excitation failure, the preset ratio may be set to a smaller value, for example, to 10%, and correspondingly, it is determined whether the generator terminal voltage is less than 10% of the rated generator terminal voltage.
S102: if the generator terminal voltage is smaller than the rated generator terminal voltage of the preset proportion, judging whether the excitation system meets the condition of de-excitation system after the monitoring system sends a first preset time after the excitation system puts in instructions;
s103: if the excitation system meets the excitation system quitting condition, sending an excitation system cutting instruction to quit the excitation system;
specifically, after the monitoring system issues an excitation system input instruction (the excitation system input instruction can be kept for a certain time), the excitation system input instruction can be sent from the interior of the excitation system, so that the excitation system is input. On the basis of judging that the generator terminal voltage of the generator is smaller than the rated generator terminal voltage of the preset proportion, the step further judges whether the excitation system meets the condition of de-excitation system after the monitoring system sends the first preset time after the excitation system is put into use.
The specific value of the first preset duration is not limited in the application, and the appropriate setting is performed according to actual needs. After the excitation system mistakenly considers that excitation is successfully initiated and enters soft excitation initiation operation for a certain time (usually 12 seconds), soft excitation initiation is finished, the excitation system can falsely report over-excitation limitation and rotor inverse time limit over-current limitation action, so the first preset time length can be set in combination with the soft excitation initiation time, for example, the first preset time length can be set to be 15 seconds which is longer than 12 seconds and the like under the condition that the soft excitation initiation time is 12 seconds, and certainly, the first preset time length is not suitable to be too large in consideration of the startup time, so that the startup efficiency is ensured.
Because the interference voltage is accidental transient interference, when the excitation system fails to be excited due to the occurrence of the interference voltage, if the excitation system is withdrawn and then put into use, the excitation system can be excited again normally. Based on this, when it is judged that the excitation system satisfies the basis of the excitation system deactivation condition, the operation of the excitation system deactivation can be performed. Specifically, an excitation system cut-off command is sent from the inside of the excitation system to exit the excitation system.
In a specific embodiment, the excitation system deactivation condition may include that an excitation system input instruction is received, a control mode of the excitation system is an automatic operation mode, an excitation failure signal is not generated, and a generator terminal voltage is less than a rated generator terminal voltage of a preset proportion. Namely, when all the conditions are met, an excitation system cutting instruction is issued inside the excitation system so as to quit the excitation system. The failed start signal is a failed start signal generated when the excitation system fails to start due to a failure of the electrical element. If the excitation failure signal exists, the failure of the electrical element is indicated, and the excitation system still cannot be excited normally, so that the excitation failure signal can be used as a blocking condition of secondary excitation, namely once the excitation failure signal exists, secondary excitation cannot be carried out.
S104: judging whether the excitation system meets the excitation system input condition after the monitoring system issues the excitation system input instruction for a second preset time; the second preset time length is longer than the first preset time length;
s105: and if the excitation system meets the condition of putting the excitation system into use, putting the excitation system into use to activate the excitation system.
Specifically, whether the excitation system meets the condition of being put into the excitation system after the monitoring system issues the excitation system putting-in instruction for a second preset time is judged, that is, whether the excitation system meets the condition of being put into the excitation system after the excitation system exits is judged, so that when the excitation system meets the condition of being put into the excitation system, the excitation system is put into the excitation system again. When the condition of putting the excitation system into operation is met, the excitation system can send an excitation system putting instruction inside the excitation system to put the excitation system into operation.
The second preset time length is longer than the first preset time length because the excitation system is switched on again after the excitation system is quitted. The specific value of the second preset time period is not limited in the present application. For example, in the case where the first preset time period is set to 15 seconds, the second preset time period may be set to 23 seconds.
In a specific embodiment, the excitation system input condition may include: and receiving an excitation system input instruction sent by the monitoring system, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of a preset proportion.
Further, in a specific embodiment, the excitation method may further include: judging whether the excitation system meets the excitation failure alarm condition after the monitoring system issues a third preset time after the excitation system input instruction; the third preset time length is longer than the second preset time length; and if the excitation system meets the excitation failure alarm condition, carrying out excitation failure alarm on the excitation system.
Specifically, in this embodiment, if the excitation system is still failed to excite due to the influence of the interference voltage when performing the excitation initiating operation for the second time, the excitation initiating failure alarm is performed, so as to prompt the excitation initiating failure in time. Specifically, whether the excitation system meets the excitation failure alarm condition after the monitoring system issues the excitation system input instruction for a third preset time is judged; and if the excitation system meets the excitation failure alarm condition, carrying out excitation failure alarm on the excitation system. The third preset time period may be set adaptively with reference to the second preset time period, for example, the second preset time period is set to 23 seconds, and the third preset time period is set to 32 seconds. Further, the excitation failure alarm condition may include: the terminal voltage is less than the rated terminal voltage of the preset proportion and no excitation failure signal exists.
Further, in a specific embodiment, the excitation method may further include: if an excitation system quitting instruction issued by the monitoring system is received, the excitation system quits; and if the excitation failure signal exists, carrying out excitation failure alarm on the excitation system. Namely, once the excitation system receives an excitation system quitting instruction issued by the monitoring system, the excitation system can quit. Once the excitation system receives the excitation failure signal, the excitation system gives an excitation failure alarm. In addition, after the excitation system performs excitation failure alarm, an excitation system can send an excitation removal command in place to reset the excitation failure alarm, and the holding duration of the excitation system input command issued by the monitoring system is finished, that is, there is no excitation system input command issued by the monitoring system.
In summary, the excitation starting method of the excitation system provided by the application introduces the operation of secondary excitation starting, takes the generator terminal voltage of the generator as the condition of secondary excitation starting, and by monitoring the generator terminal voltage of the generator, when the generator terminal voltage is judged to be smaller than the rated voltage value of the preset proportion, namely when the first excitation starting fails due to voltage interference, the excitation system is quitted after the excitation system is judged to meet the condition of excitation removing, and when the excitation system is judged to meet the condition of excitation adding, the excitation system is added again, so that the excitation system added again realizes normal excitation starting through excitation removing again, the operation stability of the excitation system can be effectively improved, and the success rate of starting the unit is improved.
One specific embodiment provided herein is described below in conjunction with the schematic diagram of the firing logic shown in fig. 2:
the generator terminal voltage of the generator is monitored, the generator terminal voltage is compared with the 10% rated generator terminal voltage, and if the generator terminal voltage of the generator is continuously less than the 10% rated generator terminal voltage for 2 seconds, the rising delay module TON1 outputs logic 1 after the comparator outputs logic 1 for 2 seconds. In addition, the monitoring system issues an excitation system input instruction, the excitation system input instruction is kept for 25 seconds, the rising delay module TON2 outputs logic 1 to the first and gate after 15 seconds, meanwhile, the rising delay module TON1 outputs logic 1 to the first and gate, if no excitation failure signal exists, the first not gate outputs logic 1 to the first and gate, and if the control mode of the excitation system is an automatic control mode, the first and gate outputs logic 1, so that the first or gate outputs logic 1, namely, the excitation system quitting condition is met, and then the excitation system sends an excitation system cutting instruction inside the excitation system, so that the excitation system quits. Of course, if the monitoring system directly issues an excitation system quitting instruction, the first or gate also outputs logic 1, and then the excitation system sends an excitation system cut-off instruction inside the excitation system, so that the excitation system quits.
In addition, the monitoring system issues an excitation system input instruction, and the excitation system input instruction is kept for 25 seconds. The rising delay module TON1 outputs logic 1 to the second not gate 2 seconds after the comparator outputs logic 1, then the second not gate outputs logic 0, and meanwhile if there is no excitation failure signal, the corresponding excitation command is cut off in place, then the third or gate outputs logic 0, and further the SR flip-flop outputs logic 1, and further the rising delay module TON3 outputs logic 1 to the second and gate 23 seconds later. If no excitation failure signal exists, the first NOT gate outputs logic 1 to the second AND gate, and if the control mode of the excitation system is an automatic control mode, the second AND gate outputs logic 1, so that the second OR gate outputs logic 1, namely the condition of inputting the excitation system is met, and then the excitation system sends an excitation system inputting instruction inside the excitation system, so that the excitation system is input again for secondary excitation. In addition, if the excitation system exits, the monitoring system directly issues an excitation system input instruction, the second or gate outputs logic 1, and then the excitation system sends the excitation system input instruction inside the excitation system, so that the excitation system is input again to perform excitation initiation for the second time.
In addition, the monitoring system issues an excitation system input instruction, and the excitation system input instruction is kept for 25 seconds. The rising delay module TON1 outputs logic 1 to the third and gate and the second not gate 2 seconds after the comparator outputs logic 1, then the second not gate outputs logic 0, and meanwhile if there is no excitation failure signal, the corresponding local excitation-cut instruction does not exist, then the third or gate outputs logic 0, and then the SR flip-flop outputs logic 1, and the further rising delay module TON4 outputs logic 1 to the third and gate 32 seconds later. If the control mode of the excitation system is an automatic control mode, the third AND gate outputs logic 1, and then the fourth OR gate outputs logic 1, namely the excitation failure alarm condition is met, and the excitation system performs excitation failure alarm.
If the excitation failure signal exists due to the failure of the electrical element, the fourth OR gate outputs logic 1 in the same way, and then excitation failure alarm is carried out. Further, due to the existence of the excitation failure signal, the corresponding excitation command is cut off in place, so that the third or gate outputs logic 1, and the SR trigger outputs logic 0 to reset the excitation failure alarm.
The present application also provides an excitation device for an excitation system, which device as described below may be referred to in correspondence with the method as described above. Referring to fig. 3, the apparatus includes:
the voltage monitoring module 10 is used for monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion;
the first judging module 20 is configured to judge whether the excitation system meets an excitation system deactivation condition after the monitoring system issues the excitation system input instruction for a first preset time period if the generator terminal voltage is smaller than a rated generator terminal voltage of a preset proportion;
the first execution module 30 is configured to send an excitation system removal instruction to exit the excitation system if the excitation system meets the excitation system exiting condition;
the second judgment module 40 is used for judging whether the excitation system meets the excitation system input condition after the monitoring system issues the excitation system input instruction for a second preset time; and the second preset time length is greater than the first preset time length.
And the second execution module 50 is used for putting the excitation system into excitation system excitation if the excitation system meets the condition of putting the excitation system into excitation system.
On the basis of the above embodiment, optionally, the method further includes:
the third judgment module is used for judging whether the excitation system meets the excitation failure alarm condition after the monitoring system issues the excitation system input instruction for a third preset time; the third preset time length is longer than the second preset time length;
and the third execution module is used for alarming excitation system excitation failure if the excitation system meets the excitation system excitation failure alarm condition.
The present application further provides an excitation system, including a memory and a processor, where the memory is used to store a computer program, and the processor is used to implement the following steps when executing the computer program:
monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion; if the generator terminal voltage is smaller than the rated generator terminal voltage of the preset proportion, judging whether the excitation system meets the condition of de-excitation system after the monitoring system sends a first preset time after the excitation system puts in instructions; if the excitation system meets the excitation system quitting condition, sending an excitation system cutting instruction to quit the excitation system; judging whether the excitation system meets the excitation system input condition after the monitoring system issues the excitation system input instruction for a second preset time; the second preset time length is longer than the first preset time length; and if the excitation system meets the condition of putting the excitation system into use, putting the excitation system into use to activate the excitation system.
For the introduction of the excitation system provided in the present application, please refer to the above method embodiment, which is not described herein again.
The present application further provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion; if the generator terminal voltage is smaller than the rated generator terminal voltage of the preset proportion, judging whether the excitation system meets the condition of de-excitation system after the monitoring system sends a first preset time after the excitation system puts in instructions; if the excitation system meets the excitation system quitting condition, sending an excitation system cutting instruction to quit the excitation system; judging whether the excitation system meets the excitation system input condition after the monitoring system issues the excitation system input instruction for a second preset time; the second preset time length is longer than the first preset time length; and if the excitation system meets the condition of putting the excitation system into use, putting the excitation system into use to activate the excitation system.
The computer-readable storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
For the introduction of the computer-readable storage medium provided in the present application, please refer to the above method embodiments, which are not described herein again.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device, the apparatus and the computer-readable storage medium disclosed in the embodiments correspond to the method disclosed in the embodiments, so that the description is simple, and the relevant points can be referred to the description of the method.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The excitation method and device of the excitation system, the excitation system and the computer readable storage medium provided by the application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Claims (8)
1. A method of starting an excitation system, comprising:
monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion;
if the machine end voltage is smaller than the rated machine end voltage of the preset proportion, judging whether the excitation system meets the condition of de-excitation system after the monitoring system issues a first preset time after the excitation system puts in instructions;
if the excitation system meets the excitation system quitting condition, sending an excitation system cutting instruction to quit the excitation system;
judging whether the excitation system meets the excitation system input condition after a second preset time after the monitoring system issues the excitation system input instruction; the second preset time length is longer than the first preset time length;
if the excitation system meets the condition of putting in the excitation system, putting in the excitation system to carry out excitation system excitation;
the de-excitation system conditions include: receiving the input instruction of the excitation system, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of the preset proportion;
the excitation system putting conditions comprise: and receiving the excitation system input instruction, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of the preset proportion.
2. The method of excitation of claim 1 further comprising:
judging whether the excitation system meets an excitation failure alarm condition after the monitoring system issues a third preset time after the excitation system input instruction; the third preset time length is longer than the second preset time length;
and if the excitation system meets the excitation failure alarm condition, carrying out excitation failure alarm on the excitation system.
3. The method of claim 2, wherein the failed excitation alert condition comprises:
the machine terminal voltage is smaller than the rated machine terminal voltage of the preset proportion, and no excitation failure signal exists.
4. The method of starting according to claim 3, further comprising:
if an excitation system quitting instruction issued by the monitoring system is received, quitting the excitation system;
and if the excitation failure signal exists, carrying out excitation failure alarm on the excitation system.
5. An excitation device of an excitation system, comprising:
the voltage monitoring module is used for monitoring the generator terminal voltage of the generator and judging whether the generator terminal voltage is smaller than the rated generator terminal voltage in a preset proportion;
the first judgment module is used for judging whether the excitation system meets the condition of de-excitation system after the monitoring system issues a first preset time after the excitation system input instruction if the generator terminal voltage is smaller than the rated generator terminal voltage of a preset proportion; the de-excitation system conditions include: receiving the input instruction of the excitation system, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of the preset proportion;
the first execution module is used for sending an excitation system cutting instruction to enable the excitation system to exit if the excitation system meets the excitation system exiting condition;
the second judgment module is used for judging whether the excitation system meets the excitation system input condition after a second preset time length after the excitation system input instruction is issued by the monitoring system; the second preset time length is longer than the first preset time length; the excitation system putting conditions comprise: receiving the input instruction of the excitation system, wherein the control mode of the excitation system is an automatic operation mode and has no excitation failure signal, and the terminal voltage is less than the rated terminal voltage of the preset proportion;
and the second execution module is used for putting the excitation system into the excitation system to start excitation of the excitation system if the excitation system meets the condition of putting the excitation system into the excitation system.
6. The excitation device of claim 5, further comprising:
the third judgment module is used for judging whether the excitation system meets the excitation failure alarm condition after the monitoring system issues a third preset time after the excitation system input instruction; the third preset time length is longer than the second preset time length;
and the third execution module is used for alarming excitation system excitation failure if the excitation system meets the excitation system excitation failure alarm condition.
7. An excitation system, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the excitation method of the excitation system according to any of claims 1 to 4 when executing the computer program.
8. A computer-readable storage medium, characterized in that it stores a computer program which, when being executed by a processor, carries out the steps of the method of excitation of an excitation system according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910481416.2A CN110176884B (en) | 2019-06-04 | 2019-06-04 | Excitation starting method of excitation system and related device |
Applications Claiming Priority (1)
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| CN113676093B (en) * | 2021-07-19 | 2023-08-18 | 中国长江电力股份有限公司 | Open-loop control-based generator excitation starting method |
| CN114665762B (en) * | 2022-03-22 | 2022-11-29 | 三峡智控科技有限公司 | Excitation method for setting given value according to sine curve |
| WO2023179633A1 (en) * | 2022-03-22 | 2023-09-28 | 三峡智控科技有限公司 | Bridge rectifier closed-loop control excitation method and initial anode voltage establishment method |
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