CN107359833B - A kind of synchronous generator static excitation control method and system - Google Patents
A kind of synchronous generator static excitation control method and system Download PDFInfo
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- CN107359833B CN107359833B CN201710615597.4A CN201710615597A CN107359833B CN 107359833 B CN107359833 B CN 107359833B CN 201710615597 A CN201710615597 A CN 201710615597A CN 107359833 B CN107359833 B CN 107359833B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2103/00—Controlling arrangements characterised by the type of generator
- H02P2103/20—Controlling arrangements characterised by the type of generator of the synchronous type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The embodiment of the present application discloses a kind of synchronous generator excited system control method and system, comprising: in synchronous generator excited system control main ring setting selection switch, competing than module and summation module；Obtain the additional input signal type for being input to synchronous generator excited system control main ring；Corresponding summing point is input to by additional input signal described in the selection switch control according to the type of the additional input signal；The corresponding competing stacked system that the additional input signal is determined than module and summation module is switched according to the selection.Pass through the type for judging to be input to the additional signal that synchronous generator excited system controls in main ring, according to the summing point and stacked system that the selection of additional signal described in the Type Control of the additional signal is suitable, in the case where ensure that two or more additional control modules have output in excitation system, the additional signal of output will not conflict, and then avoid the problem of power of the assembling unit vibrates.
Description
Technical field
This application involves synchronous generator excited system control field more particularly to a kind of synchronous generator static excitation controls
Method and system processed.
Background technique
During electric system is grid-connected, the electric power for the synchronous generator being incorporated into the power networks can be frequently occurred due to excitation
System is underexcitation limitation module output quantity and the output quantity of power system stabilizer, PSS module are on excitation con-trol main ring due to the side of superposition
Formula conflict and cause the power of the assembling unit forced oscillation occur, influence the safe and stable operation of network system.
The underexcitation limitation module output signal of the synchronous generator exciting control of current main-stream, power system stabilizer, PSS output
Signal is crossed and encourages stacked system of the limitation module output signal on control main ring mainly include the following types: first, and all signals are adopted
The main ring control of excitation system is participated in summing mode is superimposed simultaneously, and is superimposed summation position and is remained unchanged on control main ring.
Second, according to the specific physical concept of additional control modules, its summing point and stacked system is separately provided in a point function, such as in voltage
Using the output signal of summing mode superposition power system stabilizer, PSS module in specified rate input signal；Using main control signal with
Additional control signals more just select the mode of the competing wealthy family of output to be superimposed the underexcitation output signal for limiting module；Using master control
Signal processed just selects the mode of the competing low door of output to be superimposed the output signal for encouraging limitation module compared with additional control signals.
Third, power system stabilizer, PSS module output signal is identical with the stacked system and second of encouraging limitation module output signal excessively,
The output signal of underexcitation limitation module, which is used, uses identical stacked system with power system stabilizer, PSS module output signal, i.e., will
Voltage specified rate input signal, power system stabilizer, PSS module output signal and underexcitation limitation module output signal three summation,
And operation is participated in by unified main control ring parameter.
There is the independent role for working as each additional control signals in the stacked system of three of the above additional control signals,
In the case that remaining additional control modules do not export, main ring can be worked normally, and can reach expected functional effect；But
In the case that two or more additional control modules have output, it will conflicting with each other between the two is generated, to lead
Cause the appearance of grid-connected power of the assembling unit oscillatory condition.
Summary of the invention
This application provides a kind of synchronous generator static excitation control method and systems, to solve the excitation of the prior art
The problem of two or more additional control modules cause the grid-connected power of the assembling unit to vibrate in system in the case where having output.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
A kind of synchronous generator excited system control method, which comprises controlled in synchronous generator excited system
Main ring setting selection switchs, is competing than module and summation module；It obtains and is input to the attached of synchronous generator excited system control main ring
Add input signal types；Pass through additional input signal described in the selection switch control according to the type of the additional input signal
It is input to corresponding summing point；According to the corresponding competing additional input letter more described than module and summation module decision of selection switch
Number stacked system.
Preferably, described be arranged in synchronous generator excited system control main ring selects switch, is competing than module and summation mould
Block, comprising: be sequentially connected in series setting summation module and competing than module, it is described it is competing than module include competing wealthy family's module and competing low door mould
Block；First choice switch and the second selection switch, the input terminal of the first choice switch and the second selection switch are set
For accessing additional input signal, the output end of the first choice switch is connected to described competing than module and summation module, institute
The output end for stating the second selection switch is connected to the summation module.
Preferably, the acquisition is input to the additional input signal type of synchronous generator excited system control main ring, packet
It includes: obtaining the additional input signal for being input to synchronous generator excited system control main ring；According to the additional input signal
Output device judges the type of the additional input signal, and the additional input signal type included encouraging limitation signal, owing
Encourage limitation signal, set end voltage feedback signal, power system stabilizer, PSS output signal and excitation system builtin voltage output signal.
Preferably, described that additional input described in the selection switch control is passed through according to the type of the additional input signal
Signal is input to corresponding summing point, comprising: obtains while being input to the signal kind of synchronous generator excited system control main ring
Class；Corresponding summing point is input to by additional input signal described in the selection switch control according to the signal kinds.
Preferably, described competing to determine the additional input signal than module and summation module according to selection switch is corresponding
Stacked system, comprising: the stacked system of additional signal is determined according to the signal kinds of the additional signal of input；It is folded according to determining
Add mode is inputted corresponding competing than module or summation module respectively by additional input signal described in the selection switch control.
A kind of synchronous generator excited system control system, the system comprises: setup module, in synchronous generator
Excitation system controls main ring setting selection and switchs, is competing than module and summation module；Module is obtained, is input to synchronous hair for obtaining
The additional input signal type of motor excitation system control main ring；Selecting module, for the class according to the additional input signal
Type is input to corresponding summing point by additional input signal described in the selection switch control；Processing module, for according to institute
It states selection and switchs the corresponding competing stacked system for determining the additional input signal than module and summation module.
Preferably, the setup module includes: the first setting unit, for being sequentially connected in series setting summation module and competing comparing mould
Block, it is described it is competing than module include competing wealthy family's module and competing low door module；Second setting unit, for be arranged first choice switch and
Second selection switch, the first choice switch and described second select the input terminal of switch for accessing additional input signal,
The output end of the first choice switch is connected to described competing than module and summation module, the output end of the second selection switch
It is connected to the summation module.
Preferably, the acquisition module includes: first acquisition unit, is input to synchronous generator excited system for obtaining
Control the additional input signal of main ring；Judging unit, it is described for being judged according to the output device of the additional input signal
The type of additional input signal, the additional input signal type included encouraging limitation signal, underexcitation limitation signal, set end voltage
Feedback signal, power system stabilizer, PSS output signal and excitation system builtin voltage output signal.
Preferably, the selecting module includes: second acquisition unit, for obtaining while being input to synchronous generator exciting
The signal kinds of system control main ring；First selecting unit, for passing through the selection switch control according to the signal kinds
The additional input signal is input to corresponding summing point.
Preferably, the processing module comprises determining that unit, and the signal kinds for the additional signal according to input determine
The stacked system of additional signal；Second selecting unit, for passing through selection switch control institute according to determining stacked system
State additional input signal input respectively it is corresponding competing than module or summation module.
As shown from the above technical solution, a kind of synchronous generator excited system control method provided by the embodiments of the present application and
System, comprising: be arranged in synchronous generator excited system control main ring and select to switch, is competing than module and summation module；It obtains defeated
Enter the additional input signal type to synchronous generator excited system control main ring；It is logical according to the type of the additional input signal
It crosses additional input signal described in the selection switch control and is input to corresponding summing point；It is switched according to the selection corresponding competing
Than the stacked system that module and summation module determine the additional input signal.Synchronous generator exciting system is input to by judgement
The type of additional signal in system control main ring, is suitble to according to the selection of additional signal described in the Type Control of the additional signal
Summing point and stacked system, in the case where ensure that two or more additional control modules have output in excitation system,
The additional signal of output will not conflict, and then avoid the problem of power of the assembling unit vibrates.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of synchronous generator excited system control method provided by the present application；
Fig. 2 is the model signal that one kind provided by the present application can freely control additional signal summing point and stacked system
Figure；
Fig. 3 is a kind of schematic diagram of synchronous generator excited system control system of the application.
Specific embodiment
Referring to Fig. 1, it is a kind of flow diagram of synchronous generator excited system control method provided by the present application, such as schemes
Shown in 1, which comprises
S101 is arranged in synchronous generator excited system control main ring and selects to switch, is competing than module and summation module.
Be sequentially connected in series setting summation module and competing than module, it is described it is competing than module include competing wealthy family's module and competing low door mould
Block；First choice switch and the second selection switch, the input terminal of the first choice switch and the second selection switch are set
For accessing additional input signal, the output end of the first choice switch is connected to described competing than module and summation module, institute
The output end for stating the second selection switch is connected to the summation module.If Fig. 2 is that one kind provided by the present application can be controlled freely
The model schematic of additional signal summing point and stacked system, the model can correspond to the control method realized in the application, institute
Stating model includes five signal input ports of A, B, C, D, E, first choice switch and the second selection switch, the first transfer function mould
Block, the first summer, the second summer, the first competing wealthy family, PID module, third summation module, the second competing wealthy family, competing low door and
Second transfer function module is sequentially connected in series setting.Wherein first choice switch respectively with the second summation module, the first competing wealthy family and
Second competing wealthy family's connection, the second selection switch are connect with the second summer and third summer respectively.
S102 obtains the additional input signal type for being input to synchronous generator excited system control main ring.
Obtain the additional input signal for being input to synchronous generator excited system control main ring；Believed according to the additional input
Number output device judge the type of the additional input signal, the additional input signal type included encouraging limitation letter
Number, underexcitation limitation signal, set end voltage feedback signal, power system stabilizer, PSS output signal and excitation system builtin voltage output
Signal.
Referring to the model provided in S101, C port input is excitation system given voltage signal, and the port D is excitation system
System generator terminal feedback voltage signal is then to need when occurring more than two input signals in other 3 input ports to input
Additional signal type is obtained, and according to the signal output apparatus connecting with signal input port, the mistake of the port A connection encourages limitation
Module, the connection of the port B is underexcitation limitation module, and the connection of the port E is power system stabilizer, PSS, the letter of A, B and C port input
It number was respectively to encourage limitation signal, underexcitation limitation signal and power system stabilizer, PSS signal.
S103, it is defeated by additional input signal described in the selection switch control according to the type of the additional input signal
Enter to corresponding summing point.The signal kinds for obtaining while being input to synchronous generator excited system control main ring, according to described
Signal kinds are input to corresponding summing point by additional input signal described in the selection switch control.
In power system stabilizer, PSS signal, underexcitation limitation signal and cross the feelings encouraging the additional signals such as limitation signal and not inputting
Under condition, mutually work is poor instead by the superposition of the first summer for generator terminal feedback voltage and excitation system given voltage, is formed and participates in excitation
The voltage deviation amount of main control ring actual operation, voltage deviation amount carries out operation by the PID module of main control ring later, and
Silicon controlled rectifier of excitation system etc. executes link, forms the DC excitation voltage for ultimately joining generator amature winding, to
Adjust and control the set end voltage of generator.
S104 competing determines the folded of the additional input signal than module and summation module according to the selection switch is corresponding
Add mode.The stacked system that additional signal is selected according to the signal kinds of the additional signal of input, according to determining stacked system
It is inputted respectively by additional input signal described in the selection switch control corresponding competing than module or summation module.
It, can be by power train by second switch in the case where only having power system stabilizer, PSS signal in additional signal
System stabilizer signal behavior is superimposed on the second summer, and voltage deviation amount is made to be superimposed the effect letter into power system stabilizer, PSS signal
Number, and link and silicon controlled rectifier link are calculated by the PID module of main control ring, the DC excitation electricity for exporting excitation system
Pressure contains the function and effect of power system stabilizer, PSS signal, forms power system stabilizer, PSS and connects with excitation system control main ring
Stacked system；It can also be switched by the second selection, power system stabilizer, PSS signal is input to third summer, forms electric power
System stabilizer stacked system in parallel with excitation system control main ring；
In the case where only having underexcitation limitation signal in additional signal, underexcitation limitation can be believed by first choice switch
It number is superimposed on the second summer, forms underexcitation limitation module output and excitation system control main ring overlapped in series mode；It can also be with
It is switched by first choice, underexcitation limitation signal is passed through to the signal behavior of the first competing wealthy family, is temporarily taken with underexcitation limitation signal
For the operation intermediate variable of voltage deviation in main control ring, reach the interim permanent Reactive Power Control in the case of identical main ring parameter
Mode；It can also be switched by first choice, by underexcitation limitation signal by competing wealthy family, competing wealthy family second, underexcitation limitation signal faces
When replace control main ring, and it is underexcitation limitation signal using excitation system additional function it is underexcitation limitation module itself control parameter,
Achieve the purpose that the control parameter of underexcitation limitation module itself can flexibly be adjusted according to own situation.
In the case where only having in additional signal and encouraging limitation signal, by competing low door, made to encourage limitation module output and faced
When replace the control main ring of excitation system, form actual interim constant current controlling, achieve the purpose that systems stabilisation is run.
At the scene in use process, if there is power system stabilizer, PSS signal and the simultaneous feelings of underexcitation limitation signal
Condition is then switched by first choice, and selection makes electric power by the competing wealthy family of underexcitation limitation Signal averaging second, by first choice switch
System stabilizer Signal averaging is to the second summer, during making underexcitation limitation module action, first by itself letter of the second competing wealthy family
The effect of main ring and power system stabilizer, PSS signal is exited in number selection, forms the interim idle control of perseverance in the process, standby
Group reactive power is adjusted in place, and when underexcitation limitation module is without exporting, then is returned under the operation law of itself by the second competing wealthy family
Main ring control mode is returned, thus during avoiding the additional power system stabilizer, PSS investment of excitation system, underexcitation limitation module output
Signal with power system stabilizer, PSS signal is simultaneous conflicts, and take into account patrolling into phase Reactive-power control for live Synchronous generator
Volume.
If there is when power system stabilizer, PSS signal with the case where limitation signal exists simultaneously is encouraged excessively, pass through the first choosing
Selecting switch makes power system stabilizer, PSS Signal averaging cause to encourage due to the alternative output function of competing low door to the second summer
The additional mistake of magnetic system encourages limitation module action and when having output signal, competing low door the main ring control by excitation system and electricity automatically
Force system stabilizer exits, and encourages limitation module substitution by crossing, interim permanent exciting current control mode is formed, to set steady
Afterwards, and excessively in the case where encouraging limitation module without output, competing low door automatically switches back into excitation main control ring, power system stabilizer, PSS
Output signal restitution effectively prevents power system stabilizer, PSS signal and acts on simultaneously and main control ring with limitation signal is encouraged excessively
Caused collision problem；
When the underexcitation limitation signal of scene appearance, cross unit caused by encouraging limitation signal and power system stabilizer, PSS signal conflict
When oscillation of power, scene selects to switch by first choice switch and second selection two Signal averaging modes of switch, changes respectively
Become stacked system and summing point of the additional control function output signal on main control ring, reproduction that can be flexible and convenient is vibrated
Generation and development process, find oscillation reasons, thus from control solve additional control signals between conflict caused by
Power of the assembling unit oscillation problem.
As can be seen from the above embodiments, a kind of synchronous generator excited system control method provided by the embodiments of the present application, packet
It includes: being arranged in synchronous generator excited system control main ring and select to switch, is competing than module and summation module；Acquisition is input to synchronization
The additional input signal type of generator excited system control main ring；Pass through the choosing according to the type of the additional input signal
It selects additional input signal described in switch control and is input to corresponding summing point；According to selection switch it is corresponding it is competing than module and
Summation module determines the stacked system of the additional input signal.Synchronous generator excited system control master is input to by judgement
The type of additional signal in ring, according to the summing point that the selection of additional signal described in the Type Control of the additional signal is suitable
And stacked system, in the case where ensure that two or more additional control modules have output in excitation system, output it is attached
Plus signal will not conflict, and then avoid the problem of power of the assembling unit vibrates.
It is corresponding with a kind of embodiment of synchronous generator excited system control method provided by the above embodiment, the application
A kind of embodiment of synchronous generator excited system control system is additionally provided, referring to Fig. 3, the system comprises:
Setup module 201, in synchronous generator excited system control main ring setting selection switch, competing than module and ask
And module.Module 202 is obtained, for obtaining the additional input class signal for being input to synchronous generator excited system control main ring
Type.Selecting module 203, for passing through additional input described in the selection switch control according to the type of the additional input signal
Signal is input to corresponding summing point.Processing module 204, for corresponding competing than module and summation mould according to selection switch
Block determines the stacked system of the additional input signal.
The setup module 201 includes: the first setting unit, for being sequentially connected in series setting summation module and competing than module,
It is described it is competing than module include competing wealthy family's module and competing low door module；Second setting unit, for first choice switch and the to be arranged
The input terminal of two selection switches, the first choice switch and the second selection switch is for accessing additional input signal, institute
The output end for stating first choice switch is connected to the competing output end company switched than module and summation module, second selection
It is connected to the summation module.
The acquisition module 202 includes: first acquisition unit, is input to synchronous generator excited system control for obtaining
The additional input signal of main ring；Judging unit, it is described additional for being judged according to the output device of the additional input signal
The type of input signal, the additional input signal type included encouraging limitation signal, underexcitation limitation signal, set end voltage feedback
Signal, power system stabilizer, PSS output signal and excitation system builtin voltage output signal.
The selecting module 203 includes: second acquisition unit, for obtaining while being input to synchronous generator excited system
Control the signal kinds of main ring；First selecting unit, for being passed through described in the selection switch control according to the signal kinds
Additional input signal is input to corresponding summing point.
The processing module 204 comprises determining that unit, and the signal kinds for the additional signal according to input are determining additional
The stacked system of signal；Second selecting unit, it is attached described in the selection switch control for being passed through according to determining stacked system
Input signal is added to input respectively corresponding competing than module or summation module.
Same and similar part may refer to each other between each embodiment in this specification.Implement especially for system
For example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring in embodiment of the method
Explanation.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (4)
1. a kind of synchronous generator excited system control method, which is characterized in that the described method includes:
It is arranged in synchronous generator excited system control main ring and selects to switch, is competing than module and summation module；
The additional input signal type for being input to synchronous generator excited system control main ring is obtained, includes:
Obtain the additional input signal for being input to synchronous generator excited system control main ring；
The type of the additional input signal, the additional input letter are judged according to the output device of the additional input signal
Number type included encourage limitation signal, underexcitation limitation signal, set end voltage feedback signal, power system stabilizer, PSS output signal and
Excitation system builtin voltage output signal；
Correspondence is input to by additional input signal described in the selection switch control according to the type of the additional input signal
Summing point, include:
Obtain while being input to the signal kinds of synchronous generator excited system control main ring；
Corresponding summing point is input to by additional input signal described in the selection switch control according to the signal kinds；
The corresponding competing stacked system that the additional input signal is determined than module and summation module, packet are switched according to the selection
It includes:
The stacked system of additional signal is determined according to the signal kinds of the additional signal of input；
It is inputted respectively according to determining stacked system by additional input signal described in the selection switch control corresponding competing
Than module or summation module.
2. synchronous generator excited system control method according to claim 1, which is characterized in that described in synchronous generator
Machine excitation system controls main ring setting selection and switchs, is competing than module and summation module, comprising:
Be sequentially connected in series setting summation module and competing than module, it is described it is competing than module include competing wealthy family's module and competing low door module；
First choice switch and the second selection switch, the input terminal of the first choice switch and the second selection switch are set
For accessing additional input signal, the output end of the first choice switch is connected to described competing than module and summation module, institute
The output end for stating the second selection switch is connected to the summation module.
3. a kind of synchronous generator excited system control system, which is characterized in that the system comprises:
Setup module, for synchronous generator excited system control main ring setting selection switch, it is competing than module and summation module；
Module is obtained, for obtaining the additional input signal type for being input to synchronous generator excited system control main ring；
The acquisition module includes:
First acquisition unit, for obtaining the additional input signal for being input to synchronous generator excited system control main ring；
Judging unit, for judging the type of the additional input signal according to the output device of the additional input signal,
The additional input signal type included encouraging limitation signal, underexcitation limitation signal, set end voltage feedback signal, electric power system stability
Determine device output signal and excitation system builtin voltage output signal；
Selecting module, for being believed according to the type of the additional input signal by additional input described in the selection switch control
Number it is input to corresponding summing point；
The selecting module includes:
Second acquisition unit, for obtaining while being input to the signal kinds of synchronous generator excited system control main ring；
First selecting unit, for being inputted according to the signal kinds by additional input signal described in the selection switch control
To corresponding summing point；
Processing module, for according to the corresponding competing additional input signal more described than module and summation module decision of selection switch
Stacked system；
The processing module includes:
Determination unit determines the stacked system of additional signal for the signal kinds according to the additional signal of input；
Second selecting unit, for passing through additional input signal described in the selection switch control point according to determining stacked system
It does not input corresponding competing than module or summation module.
4. synchronous generator excited system control system according to claim 3, which is characterized in that the setup module packet
It includes:
First setting unit, for being sequentially connected in series setting summation module and competing than module, it is described it is competing than module include competing wealthy family's mould
Block and competing low door module；
Second setting unit, for being arranged first choice switch and the second selection switch, first choice switch and described the
The input terminal of two selection switches is connected to the competing ratio for accessing additional input signal, the output end of the first choice switch
The output end of module and summation module, the second selection switch is connected to the summation module.
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| CN107359833B true CN107359833B (en) | 2019-09-24 |
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|---|---|---|---|---|
| JP2012157101A (en) * | 2011-01-24 | 2012-08-16 | Toshiba Corp | Excitation controller of synchronous machine |
| CN103580569A (en) * | 2013-11-13 | 2014-02-12 | 国家电网公司 | Flexible and extensible excitation control system |
| CN103684158A (en) * | 2013-11-06 | 2014-03-26 | 广州擎天实业有限公司 | PSS (Power System Stabilizer) switching based synchronous generator excitation control method |
| CN106532742A (en) * | 2016-11-23 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | Novel AVR excitation system transfer function model |
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2017
- 2017-07-26 CN CN201710615597.4A patent/CN107359833B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012157101A (en) * | 2011-01-24 | 2012-08-16 | Toshiba Corp | Excitation controller of synchronous machine |
| CN103684158A (en) * | 2013-11-06 | 2014-03-26 | 广州擎天实业有限公司 | PSS (Power System Stabilizer) switching based synchronous generator excitation control method |
| CN103580569A (en) * | 2013-11-13 | 2014-02-12 | 国家电网公司 | Flexible and extensible excitation control system |
| CN106532742A (en) * | 2016-11-23 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | Novel AVR excitation system transfer function model |
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