CN103592532B - A kind of parameter detection method of wind energy turbine set Static Var Compensator and system - Google Patents
A kind of parameter detection method of wind energy turbine set Static Var Compensator and system Download PDFInfo
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Abstract
The invention provides a kind of parameter detection method and system of wind energy turbine set Static Var Compensator, the method comprises: step 1: send enabled instruction and operational mode instruction to Static Var Compensator controller, starts and run under the operational mode of specifying in described operational mode instruction to make Static Var Compensator; Step 2: send the power step instruction under described operational mode to described Static Var Compensator controller, under making described Static Var Compensator be operated in the power of specifying; Step 3: send a measurement triggering signal to data acquisition equipment, makes described data acquisition equipment gather described Static Var Compensator current signal, voltage signal; Step 4: the current signal described in reception, voltage signal and described data acquisition equipment are from value start-up time that described Static Var Compensator obtains; Step 5: according to the transmitting time of described enabled instruction, current signal, voltage signal and start-up time value generate actual response time and real power.
Description
Technical field
The present invention, about wind farm device detection technique, particularly, is the parameter detection method about a kind of wind energy turbine set Static Var Compensator and system.
Background technology
Along with the mankind pursue the continuous quickening of clean energy resource paces, wind-power electricity generation obtains and develops widely, wind energy turbine set carries out the conveying of electric power in the mode of cluster wind power generating set, and its accounting in electric power system power source structure also significantly increases, also more and more obvious on the impact of electric system.But because Wind turbines itself does not possess the ability resisting electric network fault for a long time, in order to the better recovery in the electric network fault moment to electrical network provides quick support, generally all require configuration dynamic passive compensation equipment in wind energy turbine set.Due to the fast development construction of wind energy turbine set, strict technical testing is not carried out at the dynamic passive compensation equipment of wind energy turbine set auxiliary construction, there is certain problem in some equipment, well cannot adapt to the quick response that dispatching of power netwoks issues, even not have correct action when electric network fault.In order to grasp dynamic adjustments scope, the key parameter such as response time and the quality of power supply of integrated wind plant dynamic passive compensation equipment comprehensively, all operations specification is met with the running quality and technical indicator that ensure wind energy turbine set dynamic passive compensation equipment, need to develop a kind of wind energy turbine set Static Var Compensator (StaticVarCompensator, SVC) functional characteristic detection scheme.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is the parameter detection method and the system that provide a kind of wind energy turbine set Static Var Compensator, to calculate the dynamic characteristic parameter of Static Var Compensator equipment more efficiently and accurately, detect the dynamic perfromance of Static Var Compensator equipment.
To achieve these goals, the embodiment of the present invention provides a kind of parameter detection method of wind energy turbine set Static Var Compensator, this parameter detection method comprises: step 1: send enabled instruction and operational mode instruction to Static Var Compensator controller, starts and run under the operational mode of specifying in described operational mode instruction to make Static Var Compensator; Step 2: send the power step instruction under described operational mode to described Static Var Compensator controller, under making described Static Var Compensator be operated in the power of specifying; Step 3: send a measurement triggering signal to data acquisition equipment, makes described data acquisition equipment gather described Static Var Compensator current signal, voltage signal; Step 4: the current signal described in reception, voltage signal and described data acquisition equipment are from value start-up time that described Static Var Compensator obtains; Step 5: according to the transmitting time of described enabled instruction, current signal, voltage signal and start-up time value generate actual response time and real power.
Further, above-mentioned steps 5 comprises: according to described transmitting time and computing relay time start-up time; Response time and real power is generated according to described current signal and voltage signal; Described actual response time is calculated according to described time delay and response time.
In one embodiment, after the described actual response time of above-mentioned generation and real power, above-mentioned parameter detection method also comprises: step 6: judge whether described actual response time is less than preset time value, and whether described real power equals described power of specifying; If not, then revise control mode and the controling parameters of described Static Var Compensator equipment, then circulation performs step 2 to step 6, until described actual response time is less than described preset time value, and described real power equals described power of specifying.
In one embodiment, after above-mentioned steps 1, above-mentioned parameter detection method also comprises: step 7: send another measurement triggering signal to described data acquisition equipment, makes described data acquisition equipment gather described Static Var Compensator current signal, voltage signal; Step 8: judge that whether the current signal of above-mentioned data acquisition equipment collection, voltage signal be complete, if so, perform described step 2.
Further, if the current signal of above-mentioned data acquisition equipment collection, voltage signal are imperfect, circulation performs above-mentioned steps 7 to step 8, until described current signal, voltage signal are complete.
In one embodiment, above-mentioned operational mode comprises: the permanent idle pattern of Static Var Compensator equipment, wind energy turbine set on the suction side permanent idle pattern, wind energy turbine set on the suction side constant voltage mode.
The embodiment of the present invention also provides a kind of parameter detecting system of wind energy turbine set Static Var Compensator, this parameter detecting system comprises: operating instruction transmitting element, for sending enabled instruction and operational mode instruction to Static Var Compensator controller, starting to make Static Var Compensator and running under the operational mode of specifying in described operational mode instruction; Power step instruction sending unit, for sending the power step instruction under described operational mode to described Static Var Compensator controller, under making described Static Var Compensator be operated in the power of specifying; Measurement triggering signal transmitting unit, for sending a measurement triggering signal to data acquisition equipment, makes described data acquisition equipment gather described Static Var Compensator current signal, voltage signal; Signal receiving unit, for receiving described current signal, voltage signal and described data acquisition equipment from value start-up time that described Static Var Compensator obtains; Actual response time and real power generation unit, generate actual response time and real power for being worth the transmitting time according to described enabled instruction, current signal, voltage signal and start-up time.
Further, above-mentioned parameter generation unit comprises: time delay computing module, for according to described transmitting time and computing relay time start-up time; Parameter generation module, for generating response time and real power according to described current signal and voltage signal; Actual response time computing module, for according to described time delay and response time calculating described actual response time.
In one embodiment, above-mentioned parameter detection system also comprises: parameter judging unit, and for judging whether described actual response time is less than preset time value, and whether described real power equals described power of specifying; Amendment unit, for revising control mode and the controling parameters of Static Var Compensator equipment.
In one embodiment, above-mentioned measurement triggering signal transmitting unit also for: send another measurement triggering signal to described data acquisition equipment, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal.
Whether further, above-mentioned parameter detection system also comprises: signal integrity judging unit, complete for judging described current signal, the voltage signal of described data acquisition equipment collection.
Beneficial effect of the present invention is, can overcome manual change Static Var Compensator operational mode and issue steering order to there is error in manual operation, may cause the damage of Static Var Compensator equipment; Carry out functional characteristic test by the mode automatically manipulated, improve work efficiency, more accurately can calculate dynamic response time and the operating power of Static Var Compensator equipment fast, thus realize testing the functional characteristic of Static Var Compensator equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of the parameter detection method of wind energy turbine set Static Var Compensator according to the embodiment of the present invention;
Fig. 2 is reactive current according to the embodiment of the present invention and the corresponding relation curve map of time;
Fig. 3 is the structured flowchart of the parameter detecting system of wind energy turbine set Static Var Compensator according to the embodiment of the present invention;
Fig. 4 is the structural representation of the parameter generating unit 5 according to the embodiment of the present invention;
Fig. 5 is the structural drawing of the SVC device detection system according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of parameter detection method and system of wind energy turbine set Static Var Compensator.Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment one
The embodiment of the present invention provides a kind of parameter detection method of wind energy turbine set Static Var Compensator, and Fig. 1 is the process flow diagram of the parameter detection method of wind energy turbine set Static Var Compensator according to the embodiment of the present invention, and as shown in Figure 1, this parameter detection method comprises:
Step 101: send enabled instruction and operational mode instruction to SVC controller, starts to make SVC and runs under the operational mode of specifying in this operational mode instruction;
Step 102: send the power step instruction under this operational mode to this SVC controller, under making this SVC be operated in the power of specifying;
Step 103: send a measurement triggering signal to data acquisition equipment, makes described data acquisition equipment gather described SVC current signal, voltage signal;
Step 104: receive above-mentioned current signal, voltage signal and this data acquisition equipment from value start-up time that this SVC obtains;
Step 105: according to the transmitting time of above-mentioned enabled instruction, current signal, voltage signal and start-up time value generate actual response time and real power.
As seen from the above description, in embodiments of the present invention, by the parameter detection method of wind energy turbine set SVC of the present invention, the functional characteristic that can complete SVC equipment automatically, fast detects, improve detection efficiency, and by the transmission delay of computing equipment, the time of SVC response instruction can be calculated accurately, and calculate the operating power of SVC reactive-load compensation equipment.
Below each step of the parameter detection method of above-mentioned wind energy turbine set SVC is specifically described.
In above-mentioned steps 101, first enabled instruction and operational mode instruction is sent to SVC controller, and record and send time of this enabled instruction, this operational mode corresponding to operational mode instruction comprises: the permanent idle pattern of SVC equipment, wind energy turbine set on the suction side permanent idle pattern, wind energy turbine set on the suction side constant voltage mode.SVC controller is after receiving above-mentioned enabled instruction and operational mode instruction, SVC controller is run according to this enabled instruction control SVC equipment investment, and run (following under the operational mode specified by this operating instruction according to this operating instruction, be described be in the running status of the permanent idle pattern of SVC equipment with SVC equipment under, but the present invention is not limited to this).
In above-mentioned steps 102, be in the running status of the permanent idle pattern of SVC equipment at SVC equipment under, the power step instruction under this operational mode is sent to this SVC controller, work under the power this SVC equipment being limited in this power step instruction by power step instruction, in embodiments of the present invention, the power that this power step instruction limits can be such as allow SVC equipment at 20% of rated power respectively, 50%, run under the power of 75% and 100%, also can be the ratio setting different rated power according to the duty requirements of reality, the present invention is not as limit.
In above-mentioned steps 102, above-mentioned power step instruction is sent to SVC equipment, the power that above-mentioned power step instruction specifies is operated in (below for 50% of rated power to make this SVC equipment, but the present invention is not limited to this) under, perform above-mentioned steps 103, measurement triggering signal is sent to data acquisition equipment, designation data collecting device gathers voltage signal and the current signal of SVC equipment, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet, this current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.
Through above-mentioned steps 102 and step 103, after collecting current signal when SVC equipment runs under the permanent idle pattern of SVC equipment and voltage signal by data acquisition equipment, obtain above-mentioned current signal and voltage signal, meanwhile, start-up time value (step 104) of this SVC after receiving power step instruction is obtained by data acquisition equipment.
Above-mentioned steps 105, obtaining the start-up time of this SVC after receiving power step instruction after value, can according to the transmitting time of transmission enabled instruction recorded in a step 101 and this of the value got by this data acquisition equipment start-up time, calculate after this power step instruction is issued to SVC equipment, the transmission delay existed during the actual startup optimization of SVC equipment, that is: the transmitting time=transmission delay of value-enabled instruction start-up time, just obtains time delay (transmission delay); By analyzing the current signal of the SVC equipment outlet in the above-mentioned current signal obtained, reactive current as shown in Figure 2 and the corresponding relation curve map of time can be formed, such as shown in Fig. 2, SVC electric current from change to effective value reach 90% of control objectives time, the response time of the SVC that record is corresponding, obtain the response time of SVC equipment thus; Combine the time delay calculated again, obtain the response time of the reality of SVC equipment, that is: actual response time=response time-time delay.
Meanwhile, after getting above-mentioned current signal and voltage signal by data acquisition equipment, by the value of this current signal and voltage signal, calculate the reactive power (unit is: weary (Var)) of the real work obtaining SVC equipment.
In sum, by the parameter detection method of wind energy turbine set Static Var Compensator of the present invention, can realize full intellectualized, operate automatically, the functional characteristic that can complete SVC equipment fast detects, improve detection efficiency, and by the transmission delay of computing equipment, the time of SVC reactive-load compensation equipment response instruction can be calculated accurately, and calculate the operating power of SVC reactive-load compensation equipment.
In a preferred embodiment, the parameter detection method of wind energy turbine set Static Var Compensator of the present invention is further comprising the steps of:
Step 106: judge whether this actual response time is less than preset time value, and whether this real power equals the power that this is specified; If not, then revise control mode and the controling parameters of this SVC equipment, such as: the PI control ratio coefficient, the stagnant ring parameter of voltage deviation, overshoot angle etc. of amendment SVC equipment, then circulation performs step 102 to step 106, until described actual response time is less than described preset time value, and described real power equals described power of specifying.
After the power of actual response time and real work that this SVC equipment detected, can detect under the permanent idle pattern of SVC equipment by the determination methods as described in step 106, and under the operating mode of 50% of rated power, whether the running status of this SVC equipment meets the requirements.Concrete determination methods is as follows:
For actual response time, judge the size of itself and a preset time value, this preset time value can be such as 30ms, or can need according to real work the size adjusting this preset time value, and the present invention is not as limit.And if only if when this actual response time is less than this preset time value, and this SVC equipment just meets the requirement of operation standard.
For real power, judge the size of 50% of itself and rated power, if this real power equals 50% of rated power, then this SVC equipment meets the requirement of operation standard.
Only when the actual response time detected and real power all meet above-mentioned requirements, this SVC equipment meets the requirement of operation standard.If judge that this actual response time does not meet the condition being less than this preset time value, or this real power does not meet the condition equaling 50% of rated power, or when actual response time and real power do not meet above-mentioned decision condition, then judge that this SVC equipment does not meet standard-required, need to revise equipment control mode and controling parameters by SVC equipment manufacturer, such as: the PI control ratio coefficient of amendment SVC equipment, the stagnant ring parameter of voltage deviation, overshoot angle etc., and return circulation execution above-mentioned steps 102 to step 106, make SVC equipment under the permanent idle pattern of SVC equipment, and run under the operating mode of 50% of rated power, obtain the new actual response time and new real power that have modified after control mode and controling parameters, and again new actual response time and new real power are judged.Judge whether new actual response time is less than preset time value, and whether new real power equals 50% of rated power, until new actual response time is less than preset time value, and new real power equals 50% of rated power, now, show that this SVC equipment meets operation standard requirement.
In a preferred embodiment, after above-mentioned steps 101, before step 102, the parameter detection method of the wind energy turbine set SVC of the embodiment of the present invention also can comprise:
Step 107: send another measurement triggering signal to data acquisition equipment, makes this data acquisition equipment gather this SVC current signal, voltage signal;
Step 108: judge that whether current signal that this data acquisition equipment gathers, voltage signal be complete, if so, perform above-mentioned steps 102.
In above-mentioned steps 107, before the instruction of transmitted power step, in the SVC device start stage, send a measurement triggering signal to data acquisition equipment, for gathering voltage signal when SVC equipment operates in SVC equipment permanent idle pattern and current signal, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet; This current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.
In above-mentioned steps 108, judge that whether the current signal of this data acquisition equipment collection, voltage signal be complete to refer to, the all current signals described in step 107 and voltage signal are whether collected, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet; This current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.If judge that data acquisition equipment has collected the current signal described in step 107 and voltage signal, then illustrate this current signal and voltage signal complete, then proceed step 102, be sent in the power step instruction under the permanent idle pattern of SVC equipment to this SVC controller, make this SVC equipment be operated in 50% time of rated power;
If judge this current signal that data acquisition equipment collects and voltage signal and imperfect, then need to return and perform above-mentioned steps 107 to step 108, control data collecting device Resurvey voltage signal and current signal, and to data acquisition equipment Resurvey to voltage signal and the integrality of current signal judge, until after data acquisition equipment collects complete current signal and voltage signal, perform step 102.
In a preferred embodiment, after step 104, the parameter detection method of the wind energy turbine set SVC of the embodiment of the present invention also can comprise:
Step 109: receive this current signal, whether described current signal that voltage signal judging is obtained by data acquisition equipment, voltage signal complete, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet; This current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.If judge that data acquisition equipment has collected above-mentioned current signal and voltage signal, then illustrate this current signal and voltage signal complete, then proceed step 105, according to the transmitting time of above-mentioned enabled instruction, current signal, voltage signal and start-up time value generate actual response time and real power.
If judge this current signal that data acquisition equipment collects and voltage signal and imperfect, then need to return and perform above-mentioned steps 102 to step 104, control data collecting device Resurvey voltage signal and current signal, and to data acquisition equipment Resurvey to voltage signal and the integrality of current signal judge, until after data acquisition equipment collects complete current signal and voltage signal, perform step 105.
It should be noted that, in embodiments of the present invention, although be limited to step 108 each step step 101 of the parameter detection method of the wind energy turbine set Static Var Compensator of the embodiment of the present invention, but it is more clear when being only to make description, and be not the order of each step of the parameter detection method of the wind energy turbine set Static Var Compensator for limiting the embodiment of the present invention, such as, as seen from the above description, in concrete enforcement, above-mentioned steps 102 and step 103 can be carry out simultaneously.
And, operational mode mentioned above and the power specified by power step instruction are not one_to_one corresponding, in the testing process of reality, refer in an operational mode, under condition under making SVC be operated in different capacity corresponding to power step instruction respectively, respectively the actual response time of this SVC and real power are detected.Afterwards, then be switched in next operational mode, under again making SVC be operated in different capacity corresponding to power step instruction respectively, again respectively the actual response time of this SVC and real power detected.In practical application, such as, under first making this SVC operate in the permanent idle pattern of SVC equipment, detect the four group actual response times of this SVC under the power of 25%, 50%, 75% and 100% of rated power and real power respectively; Under making this SVC operate in the permanent idle pattern of wind energy turbine set on the suction side again, detect the four group actual response times of this SVC under the power of 25%, 50%, 75% and 100% of rated power and real power respectively; Under making this SVC operate in wind energy turbine set on the suction side constant voltage mode again, detect the four group actual response times of this SVC under the power of 25%, 50%, 75% and 100% of rated power and real power respectively.More than to illustrate used pattern and numerical value, be only in order to illustration, and be not limit the present invention.
Embodiment two
The embodiment of the present invention also provides a kind of parameter detecting system of wind energy turbine set Static Var Compensator, Fig. 3 is the structural drawing of the parameter detecting system of wind energy turbine set Static Var Compensator according to the embodiment of the present invention, as shown in Figure 3, this parameter detecting system comprises: operating instruction transmitting element 1, power step instruction sending unit 2, measurement triggering signal transmitting unit 3, signal receiving unit 4 and actual response time and real power generation unit 5.
Wherein, above-mentioned operating instruction transmitting element 1, for sending enabled instruction and operational mode instruction to SVC controller, starting to make SVC and running under the operational mode of specifying in this operational mode instruction; First this enabled instruction and operational mode instruction sending unit 1 send enabled instruction and operational mode instruction to SVC controller, and record and send time of this enabled instruction, this operational mode corresponding to operational mode instruction comprises: the permanent idle pattern of SVC equipment, wind energy turbine set on the suction side permanent idle pattern, wind energy turbine set on the suction side constant voltage mode.SVC controller is after receiving above-mentioned enabled instruction and operational mode instruction, control SVC equipment investment runs, and run (following under the operational mode specified by this operating instruction, be described be in the running status of the permanent idle pattern of SVC equipment with SVC equipment under, but the present invention is not limited to this).
Above-mentioned power step instruction sending unit 2, for sending the power step instruction under this operational mode to this SVC controller, under making this SVC be operated in the power of specifying, when SVC equipment is in the running status of the permanent idle pattern of SVC equipment, power step instruction sending unit 2 sends the power step instruction under this operational mode to this SVC controller, by working under power step instruction make this SVC be operated in power that this power step instruction limits, in embodiments of the present invention, the power that this power step instruction limits can be such as allow SVC equipment at 20% of rated power respectively, 50%, run under the power of 75% and 100%, also can be the ratio setting different rated power according to the duty requirements of reality, the present invention is not as limit.
Above-mentioned measurement triggering signal transmitting unit 3, for sending a measurement triggering signal to data acquisition equipment, makes this data acquisition equipment gather current signal, the voltage signal of described SVC, the power of specifying to SVC equipment in above-mentioned power step instruction at above-mentioned power step instruction sending unit 2 is (following, for 50% of rated power, but the present invention is not limited to this) while, measurement triggering signal transmitting unit 3 sends measurement triggering signal to data acquisition equipment, voltage signal when running under the operating mode of 50% of rated power with designation data collecting device collection SVC equipment and current signal, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet, this current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.
Above-mentioned signal receiving unit 4, for receiving this current signal, voltage signal and this data acquisition equipment from value start-up time that this SVC obtains; Received the above-mentioned various current signal and voltage signal that are collected by above-mentioned data acquisition equipment by signal receiving unit 4, meanwhile, signal receiving unit 4 also obtains the start-up time value of this SVC after receiving power step instruction by data acquisition equipment.
Above-mentioned parameter generation unit 5, actual response time and real power is generated for being worth the transmitting time according to this enabled instruction, current signal, voltage signal and start-up time, Fig. 4 is the structural representation of the parameter generating unit 5 according to the embodiment of the present invention, as shown in Figure 4, this parameter generating unit 5 specifically comprises: time delay computing module 51, parameter generation module 52 and actual response time computing module 53.
The start-up time of this SVC after receiving power step instruction is obtained after value at signal receiving unit 4, this of value that time delay, computing module 51 can be obtained by data acquisition equipment according to the time of the transmission enabled instruction of being recorded by above-mentioned enabled instruction and operational mode instruction sending unit 1 and signal receiving unit 4 start-up time, calculate after this power step instruction is issued to SVC equipment, the transmission delay existed during the actual startup optimization of SVC equipment, that is: the transmitting time=transmission delay of value-enabled instruction start-up time, just time delay (transmission delay) is obtained, by analyzing the current signal of the SVC equipment outlet in the above-mentioned current signal obtained, above-mentioned parameter generation module 52 can form the corresponding relation curve map of reactive current and time, as shown in Figure 2, SVC electric current from change to effective value reach 90% of control objectives time, the response time of the SVC that record is corresponding, thus, parameter generation module 52 can get the response time of SVC equipment, again in conjunction with the above-mentioned time delay calculated, actual response time computing module 53 can obtain the response time of the reality of SVC equipment, that is: actual response time=response time-time delay.
Simultaneously, after getting above-mentioned current signal and voltage signal by data acquisition equipment, parameter generation module 52, also by the value of above-mentioned current signal and voltage signal, calculates the reactive power (unit is: weary (Var)) of the real work obtaining SVC equipment.
In sum, by the parameter detecting system of wind energy turbine set Static Var Compensator of the present invention, can realize full intellectualized, operate automatically, the functional characteristic that can complete Static Var Compensator equipment fast detects, improve detection efficiency, and by the transmission delay of computing equipment, the time of SVC reactive-load compensation equipment response instruction can be calculated accurately, and calculate the operating power of SVC reactive-load compensation equipment.
In a preferred embodiment, the parameter detecting system of wind energy turbine set Static Var Compensator of the present invention also comprises: parameter judging unit 6 and amendment unit 7.
After getting the actual response time of this SVC equipment and the power of real work by parameter generating unit 5, can be judged by above-mentioned parameter judging unit 6, when SVC equipment is under the permanent idle pattern of SVC equipment, and when running under the operating mode of 50% of rated power, whether the running status of this SVC equipment meets the requirements.The concrete determination methods of parameter judging unit 6 is as follows:
For actual response time, judge the size of itself and a preset time value, this preset time value can be such as 30ms, or can need according to real work the size adjusting this preset time value, and the present invention is not as limit.And if only if when this actual response time is less than this preset time value, and this SVC equipment just meets the requirement of operation standard.
For real power, judge the size of 50% of itself and rated power, if this real power equals 50% of rated power, then this SVC equipment meets the requirement of operation standard.
Only when the actual response time detected and real power all meet above-mentioned requirements, this SVC equipment meets the requirement of operation standard.If judge that this actual response time does not meet the condition being less than this preset time value, or this real power does not meet the condition equaling 50% of rated power, or when actual response time and real power do not meet above-mentioned decision condition, then judge that this SVC equipment does not meet standard-required, then need to revise equipment control mode and controling parameters by SVC equipment manufacturer, such as: the PI control ratio coefficient of amendment SVC equipment, the stagnant ring parameter of voltage deviation, overshoot angle etc., after have modified above-mentioned control mode and controling parameters, again run under the permanent idle pattern of SVC equipment by operating instruction transmitting element 1 control SVC equipment, and run under the operating mode of 50% of rated power by power step instruction sending unit 2 control SVC equipment, and generate new actual response time and new real power by parameter generating unit 5, and again by above-mentioned parameter judging unit 6, new actual response time and new real power are judged.Judge whether new actual response time is less than preset time value, and whether new real power equals the power specified by power step instruction, until new actual response time is less than preset time value, and new real power equals the power that power step instruction is specified, now, show that this SVC equipment meets operation standard requirement.
In a preferred embodiment, before the above-mentioned measurement triggering signal transmitting unit 3 of the parameter detecting system of the wind energy turbine set Static Var Compensator of the embodiment of the present invention is also used in the instruction of power step instruction sending unit 2 transmitted power step, first send a measurement triggering signal to data acquisition equipment, this data acquisition equipment is made to gather this SVC current signal, voltage signal, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet, this current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.
The parameter detecting system of the wind energy turbine set Static Var Compensator of the embodiment of the present invention also can comprise: signal integrity judging unit 8, when measurement triggering signal transmitting unit 3 is before the instruction of power step instruction sending unit 2 transmitted power step, first send a measurement triggering signal to data acquisition equipment, this data acquisition equipment is made to gather this SVC current signal, during voltage signal, the current signal that this signal integrity judging unit 8 collects above-mentioned data acquisition equipment and whether voltage signal is complete judges, to the current signal collected with whether voltage signal is complete carries out judgement and refer to, judge whether data acquisition equipment has collected all current signals and voltage signal, if be judged as collecting all current signals and voltage signal, then illustrate this current signal and voltage signal complete, then to be sent in the power step instruction under the permanent idle pattern of SVC equipment to this SVC controller by power step instruction sending unit 2, this SVC is run under the operating mode of 50% of rated power.
If signal integrity judging unit 8 judges that data acquisition equipment does not collect all current signals and voltage signal, the i.e. current signal that collects of data acquisition equipment and voltage signal imperfect, then need to resend measurement triggering signal to data acquisition equipment by above-mentioned measurement triggering signal transmitting unit 3, the current signal that Resurvey is new and voltage signal, and again judge the current signal of Resurvey and the integrality of voltage signal by signal integrity judging unit 8, until judge that the new current signal that collects and voltage signal are complete.
It should be noted that, operational mode mentioned above and the power specified by power step instruction are not one_to_one corresponding, in the testing process of reality, refer in an operational mode, under condition under making SVC be operated in different capacity corresponding to power step instruction respectively, respectively the actual response time of this SVC and real power are detected.Afterwards, then be switched in next operational mode, under again making SVC be operated in different capacity corresponding to power step instruction respectively, again respectively the actual response time of this SVC and real power detected.In practical application, such as, under first making this SVC operate in the permanent idle pattern of SVC equipment, detect the four group actual response times of this SVC under the power of 25%, 50%, 75% and 100% of rated power and real power respectively; Under making this SVC operate in the permanent idle pattern of wind energy turbine set on the suction side again, detect the four group actual response times of this SVC under the power of 25%, 50%, 75% and 100% of rated power and real power respectively; Under making this SVC operate in wind energy turbine set on the suction side constant voltage mode again, detect the four group actual response times of this SVC under the power of 25%, 50%, 75% and 100% of rated power and real power respectively.More than to illustrate used pattern and numerical value, be only in order to illustration, and be not limit the present invention.
The parameter detecting system of the wind energy turbine set Static Var Compensator of the embodiment of the present invention is illustrated below in conjunction with an example.
Fig. 5 is the structural drawing of SVC device detection system, and as shown in Figure 5, SVC device detection system comprises: SVC equipment 9, computing machine 10, SVC controller 11 and data acquisition unit 12.
Wherein, above-mentioned SVC equipment 9 comprises: thyristor-controlled reactor (ThyristorControlledReactor, TCR) branch road 91 and Capacitor banks 92.
Above computer 10 comprises host computer and slave computer, in embodiments of the present invention, by the control chip of single-chip microcomputer PIC18F2331 chip as slave computer, this chip has multiplex pulse output channel, there is abundant pin resource, possess the USART module of enhancement mode simultaneously, support the various communications protocols such as RS-485, RS-232, and it is with low cost.By the compiler of Wei Xin company specialty, write C programmer code, in a program combing is carried out to the test event under the different control model that will carry out and various operating mode, the mode performed by order carries out layout to the various function of test that needs, then by single-chip microcomputer fever writes, program code is downloaded in single-chip microcomputer, write communication protocol simultaneously, realize the communication of slave computer and SVC controller.
Inner at slave computer, write c language program, the basic function of slave computer is write, first initialization is carried out to slave computer, ensure that all built-in variables used and the supervisor of single-chip microcomputer that uses and the definition of special functional module and function distribute, complete the normal initialization of slave computer.
In practical application, slave computer corresponds to above-mentioned operating instruction transmitting element 1, power step instruction sending unit 2 and measurement triggering signal transmitting unit 3, that is, can realize following functions by slave computer:
(1) first this slave computer sends enabled instruction and operational mode instruction to SVC controller 11, and record and send time of this enabled instruction, this operational mode corresponding to operational mode instruction comprises: the permanent idle pattern of SVC equipment, wind energy turbine set on the suction side permanent idle pattern, wind energy turbine set on the suction side constant voltage mode.SVC controller 11 is after receiving above-mentioned enabled instruction and operational mode instruction, control SVC equipment investment runs, and run (following under the operational mode specified by this operating instruction, be described be in the running status of the permanent idle pattern of SVC equipment with SVC equipment under, but the present invention is not limited to this);
(2) when SVC equipment is in the running status of the permanent idle pattern of SVC equipment, slave computer sends the power step instruction under this operational mode to this SVC controller 11, by working under power step instruction make this SVC be operated in power that this power step instruction limits, in embodiments of the present invention, the power that this power step instruction limits can be such as allow SVC equipment run under the power of 20%, 50%, 75% and 100% of rated power respectively, also can be the ratio setting different rated power according to the duty requirements of reality, the present invention be as limit;
(3) SVC controller issue enabled instruction make the thyristor action of TCR branch power time, simultaneously by communication protocol the response transmission of this enabled instruction to slave computer, slave computer is by the mode of external interrupt, realize the seizure to this enabled instruction, in interrupt routine, slave computer produces pulse signal fast, by pulse signal transmission to data acquisition unit 12, voltage signal when running under the power (below for 50% of rated power) setting device 12 to gather SVC equipment to specify in above-mentioned power step instruction with designation data collection and current signal, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks 92, then above-mentioned voltage signal also comprises: the voltage signal that Capacitor banks 92 exports, this current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.
Host computer corresponds to above-mentioned signal receiving unit 4, parameter generating unit 5 and parameter judging unit 6, can realize following functions by host computer:
(1) received the above-mentioned various current signal and voltage signal of establishing device 12 to collect by above-mentioned data acquisition by host computer, meanwhile, host computer also establishes device 12 to obtain the start-up time value of this SVC after receiving power step instruction by data acquisition;
(2) host computer is obtaining the start-up time of this SVC after receiving power step instruction after value, can according to the time of the transmission enabled instruction of being recorded by slave computer and this start-up time value, calculate after this power step instruction is issued to SVC equipment, the transmission delay existed during the actual startup optimization of SVC equipment, that is: the transmitting time=transmission delay of value-enabled instruction start-up time, just obtains time delay (transmission delay); By analyzing the current signal of the SVC equipment outlet in the above-mentioned current signal obtained, host computer can form the corresponding relation curve map of reactive current and time, as shown in Figure 2, SVC electric current from change to effective value reach 90% of control objectives time, the response time of the SVC that record is corresponding, thus, host computer can get the response time of SVC equipment; Again in conjunction with the above-mentioned time delay calculated, host computer can obtain the response time of the reality of SVC equipment, that is: actual response time=response time-time delay; Meanwhile, after established device 12 to get above-mentioned current signal and voltage signal by data acquisition, host computer, also by the value of above-mentioned current signal and voltage signal, calculates the reactive power (unit is: weary (Var)) of the real work obtaining SVC equipment;
(3) judge under SVC equipment is in the permanent idle pattern of SVC equipment, and when running under the operating mode of 50% of rated power, whether the running status of this SVC equipment meets the requirements.The concrete determination methods of host computer to actual response time and real power is as follows:
For actual response time, judge the size of itself and a preset time value, this preset time value can be such as 30ms, or can need according to real work the size adjusting this preset time value, and the present invention is not as limit.And if only if when this actual response time is less than this preset time value, and this SVC equipment just meets the requirement of operation standard.
For real power, judge 50% size of itself and rated power, if this real power equals 50% of rated power, then this SVC equipment meets the requirement of operation standard.
Only when the actual response time detected and real power all meet above-mentioned requirements, this SVC equipment meets the requirement of operation standard.If judge that this actual response time does not meet the condition being less than this preset time value, or this real power does not meet the condition equaling 50% of rated power, or when actual response time and real power do not meet above-mentioned decision condition, then judge that this SVC equipment does not meet standard-required, then need to revise equipment control mode and controling parameters by SVC equipment manufacturer, such as: the PI control ratio coefficient of amendment SVC equipment, the stagnant ring parameter of voltage deviation, overshoot angle etc., after have modified above-mentioned control mode and controling parameters, again send instruction by slave computer to SVC controller 11, control SVC equipment runs under the permanent idle pattern of SVC equipment, and run under the operating mode of 50% of rated power by slave computer transmitted power step instruction control SVC equipment, and generate new actual response time and new real power by host computer, and again by host computer, new actual response time and new real power are judged.Judge whether new actual response time is less than preset time value, and whether new real power equals 50% of rated power, until new actual response time is less than preset time value, and new real power equals 50% of rated power, now, show that this SVC equipment meets operation standard requirement.
Above-mentioned data acquisition unit 12 corresponds to above-mentioned data acquisition equipment, for receiving the measurement triggering signal that slave computer sends, and gather current signal and the voltage signal of this SVC equipment, the recorded data comprising current signal and voltage signal are saved in the storage hard disk that data acquisition unit 12 itself carries, then by the data analysis function that data acquisition unit 12 carries itself, simple data processing is carried out to the data of record, after data processing, by above-mentioned signal integrity judging unit 8 to the current signal collected with whether voltage signal is complete judges, to the current signal collected with whether voltage signal is complete carries out judgement and refer to, judge whether data acquisition unit 12 has collected all current signals and voltage signal, wherein, this voltage signal comprises: the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the voltage signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned voltage signal also comprises: the voltage signal of Capacitor banks outlet, this current signal comprises: the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the current signal of SVC equipment outlet, if SVC equipment is furnished with auxiliary Capacitor banks, then above-mentioned current signal also comprises: the current signal of Capacitor banks outlet.If be judged as that data acquisition unit 12 has collected all current signals and voltage signal, then illustrate this current signal and voltage signal complete, under being then sent in present mode of operation by slave computer to this SVC controller 11 (in the present embodiment, such as operate in the permanent idle pattern of SVC equipment) power step instruction, such as, under the power (in the present embodiment, being 50% of rated power) this SVC being operated in specify;
If judge that data acquisition unit 12 does not collect all current signals and voltage signal by above-mentioned signal integrity judging unit 8, namely the current signal collected and voltage signal are also imperfect, then need to resend measurement triggering signal to data acquisition unit 12 by above-mentioned slave computer, Resurvey comprises the data of current signal and voltage signal, and again judge the current signal of Resurvey and the integrality of voltage signal by data acquisition unit 12, until judge that the current signal that data acquisition unit 12 collects and voltage signal are complete.
One of ordinary skill in the art will appreciate that the hardware that all or part of step realized in above-described embodiment method can carry out instruction relevant by program has come, this program can be stored in a computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a parameter detection method for wind energy turbine set Static Var Compensator, is characterized in that, described parameter detection method comprises:
Step 1: send enabled instruction and operational mode instruction to Static Var Compensator controller, starts to make Static Var Compensator and runs under the operational mode of specifying in described operational mode instruction;
Step 2: send the power step instruction under described operational mode to described Static Var Compensator controller, under making described Static Var Compensator be operated in the power of specifying;
Step 3: send a measurement triggering signal to data acquisition equipment, makes described data acquisition equipment gather described Static Var Compensator current signal, voltage signal;
Step 4: the current signal described in reception, voltage signal and described data acquisition equipment are from value start-up time that described Static Var Compensator obtains;
Step 5: according to the transmitting time of described enabled instruction, current signal, voltage signal and start-up time value generate actual response time and real power;
Wherein, described step 5 comprises:
According to described transmitting time and computing relay time start-up time;
Response time and real power is generated according to described current signal and voltage signal;
Described actual response time is calculated according to described time delay and response time.
2. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 1, is characterized in that, after the described actual response time of generation and real power, described parameter detection method also comprises:
Step 6: judge whether described actual response time is less than preset time value, and whether described real power equals described power of specifying;
If not, then revise control mode and the controling parameters of described Static Var Compensator equipment, then circulation performs step 2 to step 6, until described actual response time is less than described preset time value, and described real power equals described power of specifying.
3. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 1, is characterized in that, after described step 1, described parameter detection method also comprises:
Step 7: send another measurement triggering signal to described data acquisition equipment, makes described data acquisition equipment gather described Static Var Compensator current signal, voltage signal;
Step 8: whether the described current signal that the data acquisition equipment described in judgement gathers, voltage signal be complete, if so, performs described step 2.
4. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 3, it is characterized in that, if the described current signal that described data acquisition equipment gathers, voltage signal are imperfect, circulation performs step 7 to step 8, until described current signal, voltage signal are complete.
5. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 1, it is characterized in that, described operational mode comprises: the permanent idle pattern of Static Var Compensator equipment, wind energy turbine set on the suction side permanent idle pattern, wind energy turbine set on the suction side constant voltage mode.
6. a parameter detecting system for wind energy turbine set Static Var Compensator, is characterized in that, described parameter detecting system comprises:
Operating instruction transmitting element, for sending enabled instruction and operational mode instruction to Static Var Compensator controller, starting to make Static Var Compensator and running under the operational mode of specifying in described operational mode instruction;
Power step instruction sending unit, for sending the power step instruction under described operational mode to described Static Var Compensator controller, under making described Static Var Compensator be operated in the power of specifying;
Measurement triggering signal transmitting unit, for sending a measurement triggering signal to data acquisition equipment, makes described data acquisition equipment gather current signal, the voltage signal of described Static Var Compensator;
Signal receiving unit, for receiving described current signal, voltage signal and described data acquisition equipment from value start-up time that described Static Var Compensator obtains;
Parameter generating unit, generates actual response time and real power for being worth the transmitting time according to described enabled instruction, current signal, voltage signal and start-up time;
Wherein, described parameter generating unit comprises:
Time delay computing module, for according to described transmitting time and computing relay time start-up time;
Parameter generation module, for generating response time and real power according to described current signal and voltage signal;
Actual response time computing module, for according to described time delay and response time calculating described actual response time.
7. the parameter detecting system of wind energy turbine set Static Var Compensator according to claim 6, is characterized in that, described parameter detecting system also comprises:
Parameter judging unit, for judging whether described actual response time is less than preset time value, and whether described real power equals described power of specifying;
Amendment unit, for revising control mode and the controling parameters of Static Var Compensator equipment.
8. the parameter detecting system of wind energy turbine set Static Var Compensator according to claim 6, it is characterized in that, described measurement triggering signal transmitting unit also for: send another measurement triggering signal to described data acquisition equipment, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal.
9. the parameter detecting system of wind energy turbine set Static Var Compensator according to claim 8, is characterized in that, described parameter detecting system also comprises:
Whether signal integrity judging unit is complete for judging described current signal, the voltage signal of described data acquisition equipment collection.
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