CN103592532A - Method and system for detecting parameters of wind power plant static var compensator - Google Patents
Method and system for detecting parameters of wind power plant static var compensator Download PDFInfo
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- CN103592532A CN103592532A CN201310495202.3A CN201310495202A CN103592532A CN 103592532 A CN103592532 A CN 103592532A CN 201310495202 A CN201310495202 A CN 201310495202A CN 103592532 A CN103592532 A CN 103592532A
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Abstract
The invention provides a method and system for detecting parameters of a wind power plant static var compensator. The method includes the steps of (1) sending a starting instruction and a running mode instruction to a controller of the static var compensator to enable the static var compensator to be started and run in a running mode specified by the running mode instruction, (2) sending a power phase step instruction in the running mode to the controller of the static var compensator to enable the static var compensator to work at the specified power, (3) sending a measurement triggering signal to a data collection device to enable the data collection device to collect a current signal and a voltage signal of the static var compensator, (4) receiving the current signal, the voltage signal and a starting time value obtained by the data collection device from the static var compensator, and (5) generating the actual response time and the actual power according to the sending time of the starting instruction, the current signal, the voltage signal and the starting time value.
Description
Technical field
The present invention, about wind farm device detection technique, particularly, is parameter detection method and the system about a kind of wind energy turbine set Static Var Compensator.
Background technology
Along with the mankind pursue the continuous quickening of clean energy resource paces, wind-power electricity generation has obtained development widely, wind energy turbine set is carried out the conveying of electric power in the mode of cluster wind power generating set, its accounting in electric system power supply architecture also significantly increases, also more and more obvious on the impact of electric system.But because wind-powered electricity generation unit itself does not possess the ability of resisting for a long time electric network fault, in order better constantly to provide quick support to the recovery of electrical network at electric network fault, in wind energy turbine set, generally all require configuration dynamic passive compensation equipment.Fast development construction due to wind energy turbine set, dynamic passive compensation equipment at wind energy turbine set auxiliary construction does not carry out strict technical testing, there is certain problem in some equipment, cannot well adapt to the quick response that dispatching of power netwoks issues, and even when electric network fault, there is no correct action.In order to grasp the key parameters such as dynamic adjustments scope, response time and the quality of power supply of grid connected wind power field dynamic passive compensation equipment comprehensively, to guarantee that running quality and the technical indicator of wind energy turbine set dynamic passive compensation equipment all meets operations specification, need to develop a kind of wind energy turbine set Static Var Compensator (Static Var Compensator, SVC) functional characteristic detection scheme.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is to provide a kind of parameter detection method and system of wind energy turbine set Static Var Compensator, to calculate more efficiently and accurately the dynamic characteristic parameter of Static Var Compensator equipment, 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: to Static Var Compensator controller, send enabled instruction and operational mode instruction, so that Static Var Compensator starts and moves under the operational mode of described operational mode instruction appointment; Step 2: send the power step instruction under described operational mode to described Static Var Compensator controller, described Static Var Compensator is operated under the power of appointment; Step 3: send a measurement triggering signal to data acquisition equipment, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal; Step 4: receive value start-up time that described current signal, voltage signal and described data acquisition equipment obtain from described Static Var Compensator; Step 5: generate actual response time and real power according to being worth the transmitting time of described enabled instruction, current signal, voltage signal and start-up time.
Further, above-mentioned steps 5 comprises: according to described transmitting time and computing relay time start-up time; According to described current signal and voltage signal, generate response time and real power; According to described time delay and response time calculating described actual 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 the power of described appointment; If not, revise the control mode of described Static Var Compensator equipment and control parameter, then circulation execution step 2 is to step 6, until described actual response time is less than described Preset Time value, and described real power equals the power of described appointment.
In one embodiment, after above-mentioned steps 1, above-mentioned parameter detection method also comprises: step 7: to described data acquisition equipment, send another measurement triggering signal, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal; Step 8: whether the current signal, the voltage signal that judge above-mentioned data acquisition equipment collection be complete, if so, carries out described step 2.
Further, if current signal, voltage signal that above-mentioned data acquisition equipment gathers are imperfect, circulation is carried out 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, the permanent idle pattern of wind energy turbine set on the suction side, 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, so that Static Var Compensator starts and moves under the operational mode of described operational mode instruction appointment; Power step instruction sending unit, for send the power step instruction under described operational mode to described Static Var Compensator controller, is operated under the power of appointment described Static Var Compensator; Measurement triggering signal transmitting unit, for send 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, value start-up time of obtaining from described Static Var Compensator for receiving described current signal, voltage signal and described data acquisition equipment; Actual response time and real power generation unit, for generating actual response time and real power according to being worth the transmitting time of 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 the power of described appointment; Revise unit, for revising the control mode of Static Var Compensator equipment and controlling parameter.
In one embodiment, above-mentioned measurement triggering signal transmitting unit also for: to described data acquisition equipment, send another measurement triggering signal, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal.
Further, above-mentioned parameter detection system also comprises: whether signal integrity judging unit is 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 have the error in manual operation, may cause the damage of Static Var Compensator equipment; By the mode of automatically controlling, carry out functional characteristic test, improved work efficiency, can more accurately calculate fast dynamic response time and the operating power of Static Var Compensator equipment, thereby realize the functional characteristic test to 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 of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the process flow diagram of the parameter detection method of the wind energy turbine set Static Var Compensator of the embodiment of the present invention;
Fig. 2 is the corresponding relation curve map according to the reactive current of the embodiment of the present invention and time;
Fig. 3 is according to the structured flowchart of the parameter detecting system of the wind energy turbine set Static Var Compensator of the embodiment of the present invention;
Fig. 4 is according to the structural representation of the parameter generating unit 5 of the embodiment of the present invention;
Fig. 5 is according to the structural drawing of the SVC device detection system of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining 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 mono-
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 according to the process flow diagram of the parameter detection method of the wind energy turbine set Static Var Compensator of 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, so that SVC starts and moves under the operational mode of this operational mode instruction appointment;
Step 102: send the power step instruction under this operational mode to this SVC controller, this SVC is operated under the power of appointment;
Step 103: send a measurement triggering signal to data acquisition equipment, make described data acquisition equipment gather described SVC current signal, voltage signal;
Step 104: receive value start-up time that above-mentioned current signal, voltage signal and this data acquisition equipment obtain from this SVC;
Step 105: generate actual response time and real power according to being worth the transmitting time of above-mentioned enabled instruction, current signal, voltage signal and start-up time.
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 automatically, fast SVC equipment detects, improve detection efficiency, and by the transmission delay of computing equipment, can calculate accurately the time of SVC response instruction, 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 to SVC controller, send enabled instruction and operational mode instruction, and record the time that sends this enabled instruction, the corresponding operational mode of this operational mode instruction comprises: the permanent idle pattern of SVC equipment, the permanent idle pattern of wind energy turbine set on the suction side, 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 controlled the operation of SVC equipment investment according to this enabled instruction, and (following according to the operation under the specified operational mode of this operating instruction of this operating instruction, under running status with SVC equipment in the permanent idle pattern of SVC equipment, describe, but the present invention is not limited to this).
In above-mentioned steps 102, under running status at SVC equipment in the permanent idle pattern of SVC equipment, to this SVC controller, send the power step instruction under this operational mode, under the power that this SVC equipment is limited by the instruction of power step in this power step instruction, work, in embodiments of the present invention, the power that this power step instruction limits can be for example to allow respectively SVC equipment at 20% of rated power, 50%, under 75% and 100% power, move, also can be according to the ratio of the different rated power of actual operating mode requirements set, the present invention is not as limit.
In above-mentioned steps 102, to SVC equipment, send the instruction of above-mentioned power step, so that this SVC equipment is operated in the power of above-mentioned power step instruction appointment, (50% of the rated power of take is below example, but the present invention is not limited to this) under, carry out above-mentioned steps 103, to data acquisition equipment, send measurement triggering signal, 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 group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet, this current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.
Through above-mentioned steps 102 and step 103, after current signal and voltage signal when collecting SVC equipment and move under the permanent idle pattern of SVC equipment by data acquisition equipment, obtain above-mentioned current signal and voltage signal, meanwhile, by data acquisition equipment, obtain the start-up time value (step 104) of this SVC after receiving the instruction of power step.
Above-mentioned steps 105, receiving start-up time after the instruction of power step after value obtaining this SVC, can be worth according to the transmitting time of the transmission enabled instruction of recording in step 101 and this start-up time getting by this data acquisition equipment, calculate in this power step instruction and be issued to after SVC equipment, the actual transmission delay existing while moving that starts of SVC equipment, that is: the transmitting time=transmission delay of value-enabled instruction start-up time, has just obtained time delay (transmission delay); Current signal by the SVC equipment outlet in the above-mentioned current signal obtaining is analyzed, can form reactive current as shown in Figure 2 and the corresponding relation curve map of time, example as shown in Figure 2, SVC electric current from start to change to effective value reach control target 90% time, record the response time of corresponding SVC, obtain thus the response time of SVC equipment; In conjunction with the time delay calculating, obtain the actual response time of SVC equipment, that is: actual response time=response time-time delay again.
, by data acquisition equipment, getting after above-mentioned current signal and voltage signal meanwhile, can, by the value of this current signal and voltage signal, calculate the reactive power (unit is: weary (Var)) of the real work that obtains 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, operation automatically, the functional characteristic that can complete fast SVC equipment detects, improve detection efficiency, and by the transmission delay of computing equipment, can calculate accurately the time of SVC reactive-load compensation equipment response instruction, 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 of this appointment; If not, revise the control mode of this SVC equipment and control parameter, such as: the stagnant ring parameter of PI control ratio coefficient, voltage deviation of modification SVC equipment, overshoot angle etc., then circulation execution step 102 is to step 106, until described actual response time is less than described Preset Time value, and described real power equals the power of described appointment.
After the actual response time of this SVC equipment and the power of real work being detected, can detect by the determination methods as described in step 106 under the permanent idle pattern of SVC equipment, and under 50% operating mode 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 for example 30ms, or can need to adjust the size of this Preset Time value according to real work, 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, this SVC equipment meets the requirement of operation standard.
Only, when the actual response time detecting and real power all meet above-mentioned requirements, this SVC equipment meets the requirement of operation standard.If judge this actual response time, do not meet the condition that is less than this Preset Time value, or this real power does not meet 50% the condition equal rated power, or when actual response time and real power do not meet above-mentioned decision condition, judge that this SVC equipment does not meet standard-required, need to revise equipment control mode and control parameter by SVC equipment manufacturer, for example: the PI control ratio coefficient of revising SVC equipment, the stagnant ring parameter of voltage deviation, overshoot angle etc., and return to circulation and carry out above-mentioned steps 102 to step 106, make SVC equipment under the permanent idle pattern of SVC equipment, and move under 50% operating mode of rated power, obtain and revised control mode and controlled new actual response time after parameter and new real power, 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, make this data acquisition equipment gather this SVC current signal, voltage signal;
Step 108: whether the current signal, the voltage signal that judge this data acquisition equipment collection be complete, if so, carries out 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, voltage signal and current signal while operating in the permanent idle pattern of SVC equipment for gathering SVC equipment, wherein, this voltage signal comprises: the voltage signal of the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet; This current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.
In above-mentioned steps 108, judge whether complete the referring to of current signal, voltage signal of this data acquisition equipment collection, whether collected all current signals and the voltage signal described in step 107, wherein, this voltage signal comprises: the voltage signal of the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet; This current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.If judgement data acquisition equipment has collected the current signal described in step 107 and voltage signal, illustrate that this current signal and voltage signal are complete, proceed step 102, to this SVC controller, be sent in the power step instruction under the permanent idle pattern of SVC equipment, make this SVC equipment be operated in 50% time of rated power;
If judge this current signal and voltage signal imperfect that data acquisition equipment collects, need to return and carry out above-mentioned steps 107 to step 108, control data acquisition equipment Resurvey voltage signal and current signal, and to data acquisition equipment Resurvey to voltage signal and the integrality of current signal judge, until data acquisition equipment collects after 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, voltage signal and judge that whether the described current signal, the voltage signal that are obtained by data acquisition equipment be complete, wherein, this voltage signal comprises: the voltage signal of the three-phase voltage signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet; This current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.If judgement data acquisition equipment has collected above-mentioned current signal and voltage signal, illustrate that this current signal and voltage signal are complete, proceed step 105, according to being worth the transmitting time of above-mentioned enabled instruction, current signal, voltage signal and start-up time, generate actual response time and real power.
If judge this current signal and voltage signal imperfect that data acquisition equipment collects, need to return and carry out above-mentioned steps 102 to step 104, control data acquisition equipment Resurvey voltage signal and current signal, and to data acquisition equipment Resurvey to voltage signal and the integrality of current signal judge, until data acquisition equipment collects after complete current signal and voltage signal, perform step 105.
It should be noted that, in embodiments of the present invention, although each step to the parameter detection method of the wind energy turbine set Static Var Compensator of the embodiment of the present invention is limited by step 101 to step 108, but be only more clear in order to make to describe, and be not for limiting the order of each step of parameter detection method of the wind energy turbine set Static Var Compensator of the embodiment of the present invention, for example, as seen from the above description, in concrete enforcement, above-mentioned steps 102 and step 103 can be to carry out simultaneously.
And, the specified power of operational mode mentioned above and the instruction of power step is not corresponding one by one, in actual testing process, refer in an operational mode, SVC is operated in respectively under the condition under different capacity corresponding to power step instruction, respectively the actual response time of this SVC and real power is detected.Afterwards, then be switched in next operational mode, again make SVC be operated in respectively under different capacity corresponding to power step instruction, again respectively the actual response time of this SVC and real power are detected.In practical application, for example, first make this SVC operate under the permanent idle pattern of SVC equipment, detect respectively four group actual response time and the real power of this SVC under 25%, 50%, 75% and 100% power of rated power; Make again this SVC operate under the permanent idle pattern of wind energy turbine set on the suction side, detect respectively four group actual response time and the real power of this SVC under 25%, 50%, 75% and 100% power of rated power; Make again this SVC operate under wind energy turbine set on the suction side constant voltage mode, detect respectively four group actual response time and the real power of this SVC under 25%, 50%, 75% and 100% power of rated power.More than give an example pattern used and numerical value, be only in order to illustration, and be not to limit the present invention.
Embodiment bis-
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 according to the structural drawing of the parameter detecting system of the wind energy turbine set Static Var Compensator of 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, so that SVC starts and moves under the operational mode of this operational mode instruction appointment; First this enabled instruction and operational mode instruction sending unit 1 send enabled instruction and operational mode instruction to SVC controller, and record the time that sends this enabled instruction, the corresponding operational mode of this operational mode instruction comprises: the permanent idle pattern of SVC equipment, the permanent idle pattern of wind energy turbine set on the suction side, 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 the operation of SVC equipment investment, and operation is (following under the specified operational mode of this operating instruction, under running status with SVC equipment in the permanent idle pattern of SVC equipment, describe, but the present invention is not limited to this).
Above-mentioned power step instruction sending unit 2, for send the power step instruction under this operational mode to this SVC controller, is operated under the power of appointment this SVC, during running status at SVC equipment in 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 the instruction of power step, this SVC being operated under the power that this power step instruction limits works, in embodiments of the present invention, the power that this power step instruction limits can be for example to allow respectively SVC equipment at 20% of rated power, 50%, under 75% and 100% power, move, also can be according to the ratio of the different rated power of actual operating mode requirements set, the present invention is not as limit.
Above-mentioned measurement triggering signal transmitting unit 3, for send a measurement triggering signal to data acquisition equipment, makes this data acquisition equipment gather current signal, the voltage signal of described SVC, (following at the power of above-mentioned power step instruction appointment to SVC equipment at above-mentioned power step instruction sending unit 2, 50% of the rated power of take is example, but the present invention is not limited to this) time, measurement triggering signal transmitting unit 3 sends measurement triggering signal to data acquisition equipment, voltage signal and current signal when gathering SVC equipment and move under 50% operating mode of rated power with designation data collecting device, 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 group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet, this current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.
Above-mentioned signal receiving unit 4, value start-up time of obtaining from this SVC for receiving this current signal, voltage signal and this data acquisition equipment; By signal receiving unit 4, receive above-mentioned various current signals and the voltage signal being collected by above-mentioned data acquisition equipment, meanwhile, signal receiving unit 4 also obtains this SVC by data acquisition equipment and is worth the start-up time after receiving the instruction of power step.
Above-mentioned parameter generation unit 5, for generating actual response time and real power according to being worth the transmitting time of this enabled instruction, current signal, voltage signal and start-up time, Fig. 4 is according to the structural representation of the parameter generating unit 5 of 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.
At signal receiving unit 4, obtain this SVC and receiving start-up time after the instruction of power step after value, be worth this start-up time that time delay, computing module 51 can obtain 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, calculate in this power step instruction and be issued to after SVC equipment, the actual transmission delay existing while moving that starts of SVC equipment, that is: the transmitting time=transmission delay of value-enabled instruction start-up time, just obtained time delay (transmission delay), current signal by the SVC equipment outlet in the above-mentioned current signal obtaining is analyzed, 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 start to change to effective value reach control target 90% time, record the response time of corresponding SVC, thus, parameter generation module 52 can get the response time of SVC equipment, in conjunction with the above-mentioned time delay calculating, actual response time computing module 53 can obtain the actual response time of SVC equipment, that is: actual response time=response time-time delay again.
Simultaneously, by data acquisition equipment, getting after above-mentioned current signal and voltage signal, parameter generation module 52 also can, by the value of above-mentioned current signal and voltage signal, calculate the reactive power (unit is: weary (Var)) of the real work that obtains 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, operation automatically, the functional characteristic that can complete fast Static Var Compensator equipment detects, improve detection efficiency, and by the transmission delay of computing equipment, can calculate accurately the time of SVC reactive-load compensation equipment response instruction, 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 modification unit 7.
By parameter generating unit 5, getting after the actual response time of this SVC equipment and the power of real work, can judge by above-mentioned parameter judging unit 6, when SVC equipment is under the permanent idle pattern of SVC equipment, and while moving under 50% operating mode 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 for example 30ms, or can need to adjust the size of this Preset Time value according to real work, 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, this SVC equipment meets the requirement of operation standard.
Only, when the actual response time detecting and real power all meet above-mentioned requirements, this SVC equipment meets the requirement of operation standard.If judge this actual response time, do not meet the condition that is less than this Preset Time value, or this real power does not meet 50% the condition equal rated power, or when actual response time and real power do not meet above-mentioned decision condition, judge that this SVC equipment does not meet standard-required, need to revise equipment control mode and control parameter by SVC equipment manufacturer, for example: the PI control ratio coefficient of revising SVC equipment, the stagnant ring parameter of voltage deviation, overshoot angle etc., revising above-mentioned control mode and controlling after parameter, again by operating instruction transmitting element 1, control SVC equipment moves under the permanent idle pattern of SVC equipment, and by power step instruction sending unit 2, control SVC equipment and move under 50% operating mode of rated power, and generate new actual response time and new real power by parameter generating unit 5, and again by 6 pairs of new actual response times of above-mentioned parameter judging unit and new real power, judge.Judge whether new actual response time is less than Preset Time value, and whether new real power equals the specified power of power step instruction, until new actual response time is less than Preset Time value, and new real power equals the power of power step instruction appointment, 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 2 transmitted power step instructions of power step instruction sending unit, first to data acquisition equipment, send a measurement triggering signal, make this data acquisition equipment 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 group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet, this current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group 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 2 transmitted power step instructions of power step instruction sending unit, first to data acquisition equipment, send a measurement triggering signal, make this data acquisition equipment gather this SVC current signal, during voltage signal, the current signal that 8 pairs of above-mentioned data acquisition equipments of this signal integrity judging unit collect and whether voltage signal is complete judges, to the current signal collecting and voltage signal whether complete judge refer to, judge whether data acquisition equipment has collected all current signals and voltage signal, if be judged as and collect all current signals and voltage signal, illustrate that this current signal and voltage signal are complete, by power step instruction sending unit 2, to this SVC controller, be sent in the power step instruction under the permanent idle pattern of SVC equipment, this SVC is moved under 50% operating mode of rated power.
If signal integrity judging unit 8 is judged data acquisition equipment and is not collected all current signals and voltage signal, be current signal and the voltage signal imperfect that data acquisition equipment collects, 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 by signal integrity judging unit 8, again judged the integrality of current signal and the voltage signal of Resurvey, until judge the new current signal and the voltage signal that collect, be complete.
It should be noted that, the specified power of operational mode mentioned above and the instruction of power step is not corresponding one by one, in actual testing process, refer in an operational mode, SVC is operated in respectively under the condition under different capacity corresponding to power step instruction, respectively the actual response time of this SVC and real power is detected.Afterwards, then be switched in next operational mode, again make SVC be operated in respectively under different capacity corresponding to power step instruction, again respectively the actual response time of this SVC and real power are detected.In practical application, for example, first make this SVC operate under the permanent idle pattern of SVC equipment, detect respectively four group actual response time and the real power of this SVC under 25%, 50%, 75% and 100% power of rated power; Make again this SVC operate under the permanent idle pattern of wind energy turbine set on the suction side, detect respectively four group actual response time and the real power of this SVC under 25%, 50%, 75% and 100% power of rated power; Make again this SVC operate under wind energy turbine set on the suction side constant voltage mode, detect respectively four group actual response time and the real power of this SVC under 25%, 50%, 75% and 100% power of rated power.More than give an example pattern used and numerical value, be only in order to illustration, and be not to limit the present invention.
Below in conjunction with an example, illustrate the parameter detecting system of the wind energy turbine set Static Var Compensator of the embodiment of the present invention.
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 (Thyristor Controlled Reactor, TCR) branch road 91 and capacitor group 92.
Above-mentioned computing machine 10 comprises host computer and slave computer, in embodiments of the present invention, control chip by single-chip microcomputer PIC18F2331 chip as slave computer, this chip has multiplex pulse output channel, there is abundant pin resource, the USART module that simultaneously possesses enhancement mode, 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 program, the test event under the different control models that will carry out and various operating mode is carried out to combing, the mode of carrying out by order is carried out layout to the various functions of test that need, then by single-chip microcomputer fever writes, program code is downloaded in single-chip microcomputer, write communication protocol simultaneously, realize communicating by letter of slave computer and SVC controller.
Inner at slave computer, write c language program, the basic function of slave computer is write, first slave computer is carried out to initialization, guarantee all built-in variables of using and the supervisor of single-chip microcomputer who uses and the definition of special functional module and function distribution, complete the normal initialization of slave computer.
In practical application, slave computer corresponding to above-mentioned operating instruction transmitting element 1, power step instruction sending unit 2 and measurement triggering signal transmitting unit 3, that is, can be realized following functions by slave computer:
(1) first this slave computer sends enabled instruction and operational mode instruction to SVC controller 11, and record the time that sends this enabled instruction, the corresponding operational mode of this operational mode instruction comprises: the permanent idle pattern of SVC equipment, the permanent idle pattern of wind energy turbine set on the suction side, 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 the operation of SVC equipment investment, and operation is (following under the specified operational mode of this operating instruction, under running status with SVC equipment in the permanent idle pattern of SVC equipment, describe, but the present invention is not limited to this);
(2) at SVC equipment during the running status in the permanent idle pattern of SVC equipment, the power step instruction that slave computer sends under this operational mode to this SVC controller 11, by the instruction of power step, this SVC being operated under the power that this power step instruction limits works, in embodiments of the present invention, the power that this power step instruction limits can be for example to allow respectively SVC equipment move under 20%, 50%, 75% and 100% power of rated power, also can be that the present invention is not as limit according to the ratio of the different rated power of actual operating mode requirements set;
(3) at SVC controller, issue enabled instruction and make TCR branch power thyristor when action, simultaneously by communication protocol the response transmission of this enabled instruction to slave computer, slave computer is by the mode of external interrupt, the seizure of realization to this enabled instruction, in interrupt routine, slave computer produces pulse signal fast, by pulse signal, be transferred to data acquisition unit 12, with designation data collection, establish device 12 and gather voltage signal and the current signal of SVC equipment when the lower operation of the power of above-mentioned power step instruction appointment (take below rated power 50% as example), 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 group 92, above-mentioned voltage signal also comprises: the voltage signal of capacitor group 92 outlets, this current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.
Host computer, corresponding to above-mentioned signal receiving unit 4, parameter generating unit 5 and parameter judging unit 6, can be realized following functions by host computer:
(1) by host computer, received by above-mentioned data acquisition and established above-mentioned various current signals and the voltage signal that device 12 collects, meanwhile, host computer is also established device 12 by data acquisition and is obtained this SVC and be worth the start-up time after receiving the instruction of power step;
(2) host computer is receiving start-up time after the instruction of power step after value obtaining this SVC, can be worth according to the time of the transmission enabled instruction of being recorded by slave computer and this start-up time, calculate in this power step instruction and be issued to after SVC equipment, the actual transmission delay existing while moving that starts of SVC equipment, that is: the transmitting time=transmission delay of value-enabled instruction start-up time, has just obtained time delay (transmission delay); Current signal by the SVC equipment outlet in the above-mentioned current signal obtaining is analyzed, host computer can form the corresponding relation curve map of reactive current and time, as shown in Figure 2, SVC electric current from start to change to effective value reach control target 90% time, record the response time of corresponding SVC, thus, host computer can get the response time of SVC equipment; In conjunction with the above-mentioned time delay calculating, host computer can obtain the actual response time of SVC equipment, that is: actual response time=response time-time delay again; , get after above-mentioned current signal and voltage signal establishing device 12 by data acquisition, host computer also can, by the value of above-mentioned current signal and voltage signal, calculate the reactive power (unit is: weary (Var)) of the real work that obtains SVC equipment meanwhile;
(3) judgement is at SVC equipment under the permanent idle pattern of SVC equipment, and while moving under 50% operating mode of rated power, whether the running status of this SVC equipment meets the requirements.Host computer is as follows to the concrete determination methods of actual response time and real power:
For actual response time, judge the size of itself and a Preset Time value, this Preset Time value can be for example 30ms, or can need to adjust the size of this Preset Time value according to real work, 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, this SVC equipment meets the requirement of operation standard.
Only, when the actual response time detecting and real power all meet above-mentioned requirements, this SVC equipment meets the requirement of operation standard.If judge this actual response time, do not meet the condition that is less than this Preset Time value, or this real power does not meet 50% the condition equal rated power, or when actual response time and real power do not meet above-mentioned decision condition, judge that this SVC equipment does not meet standard-required, need to revise equipment control mode and control parameter by SVC equipment manufacturer, for example: the PI control ratio coefficient of revising SVC equipment, the stagnant ring parameter of voltage deviation, overshoot angle etc., revising above-mentioned control mode and controlling after parameter, again by slave computer, to SVC controller 11, send instruction, control SVC equipment moves under the permanent idle pattern of SVC equipment, and by the instruction of slave computer transmitted power step, control SVC equipment and move under 50% operating mode of rated power, 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 is corresponding to above-mentioned data acquisition equipment, the measurement triggering signal sending for receiving slave computer, and gather current signal and the voltage signal of this SVC equipment, the recorded data that comprise current signal and voltage signal are saved in the storage hard disk that data acquisition unit 12 itself carries, then the data analysis function itself carrying by data acquisition unit 12, carries out simple data processing to the data of record, after data processing, can by 8 pairs of current signals that collect of above-mentioned signal integrity judging unit and whether voltage signal is complete judge, to the current signal collecting and voltage signal whether complete judge 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 group, above-mentioned voltage signal also comprises: the voltage signal of capacitor group outlet, this current signal comprises: the current signal of the three-phase current signal of wind energy turbine set high pressure main transformer outlet, the outlet of SVC equipment, if SVC equipment is furnished with auxiliary capacitor group, above-mentioned current signal also comprises: the current signal of capacitor group outlet.If be judged as data acquisition unit 12, all current signals and voltage signal have been collected, illustrate that this current signal and voltage signal are complete, by slave computer, to this SVC controller 11, be sent under present mode of operation (in the present embodiment, for example to operate in the permanent idle pattern of SVC equipment) the instruction of power step, this SVC is for example operated in, under the power (in the present embodiment, be rated power 50%) of appointment;
If judge data acquisition unit 12 by above-mentioned signal integrity judging unit 8, do not collect all current signals and voltage signal, the current signal collecting and voltage signal are also imperfect, 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 by data acquisition unit 12, again judged the integrality of current signal and the voltage signal of Resurvey, until judge current signal and the voltage signal that data acquisition unit 12 collects, be complete.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method can come the hardware that instruction is relevant to complete by program, 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; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
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, so that Static Var Compensator starts and moves under the operational mode of described operational mode instruction appointment;
Step 2: send the power step instruction under described operational mode to described Static Var Compensator controller, described Static Var Compensator is operated under the power of appointment;
Step 3: send a measurement triggering signal to data acquisition equipment, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal;
Step 4: receive value start-up time that described current signal, voltage signal and described data acquisition equipment obtain from described Static Var Compensator;
Step 5: generate actual response time and real power according to being worth the transmitting time of described enabled instruction, current signal, voltage signal and start-up time.
2. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 1, is characterized in that, described step 5 comprises:
According to described transmitting time and computing relay time start-up time;
According to described current signal and voltage signal, generate response time and real power;
According to described time delay and response time calculating described actual response time.
3. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 1 and 2, is characterized in that, after generating described actual response time 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 the power of described appointment;
If not, revise the control mode of described Static Var Compensator equipment and control parameter, then circulation execution step 2 is to step 6, until described actual response time is less than described Preset Time value, and described real power equals the power of described appointment.
4. 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, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal;
Step 8: whether described current signal, voltage signal that the described data acquisition equipment of judgement gathers be complete, if so, carries out described step 2.
5. the parameter detection method of wind energy turbine set Static Var Compensator according to claim 4, it is characterized in that, if described current signal, voltage signal that described data acquisition equipment gathers are imperfect, circulation execution step 7 is to step 8, until described current signal, voltage signal are complete.
6. 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, the permanent idle pattern of wind energy turbine set on the suction side, wind energy turbine set on the suction side constant voltage mode.
7. 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, so that Static Var Compensator starts and moves under the operational mode of described operational mode instruction appointment;
Power step instruction sending unit, for send the power step instruction under described operational mode to described Static Var Compensator controller, is operated under the power of appointment described Static Var Compensator;
Measurement triggering signal transmitting unit, for send 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, value start-up time of obtaining from described Static Var Compensator for receiving described current signal, voltage signal and described data acquisition equipment;
Parameter generating unit, for generating actual response time and real power according to being worth the transmitting time of described enabled instruction, current signal, voltage signal and start-up time.
8. the parameter detecting system of wind energy turbine set Static Var Compensator according to claim 7, is characterized in that, 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.
9. the parameter detecting system of wind energy turbine set Static Var Compensator according to claim 7, 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 the power of described appointment;
Revise unit, for revising the control mode of Static Var Compensator equipment and controlling parameter.
10. the parameter detecting system of wind energy turbine set Static Var Compensator according to claim 7, it is characterized in that, described measurement triggering signal transmitting unit also for: to described data acquisition equipment, send another measurement triggering signal, make described data acquisition equipment gather described Static Var Compensator current signal, voltage signal.
The parameter detecting system of 11. wind energy turbine set Static Var Compensator according to claim 10, 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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