CN106130421B - A kind of inertia control system and method based on double-fed fan motor unit - Google Patents
A kind of inertia control system and method based on double-fed fan motor unit Download PDFInfo
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- CN106130421B CN106130421B CN201610576689.1A CN201610576689A CN106130421B CN 106130421 B CN106130421 B CN 106130421B CN 201610576689 A CN201610576689 A CN 201610576689A CN 106130421 B CN106130421 B CN 106130421B
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- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
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Classifications
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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
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- H02J3/386—
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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
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Engineering & Computer Science (AREA)
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Abstract
A kind of inertia control method based on double-fed fan motor unit, including mains frequency detection module, inertia response module；Mains frequency detection module with high-precision for quickly detecting mains frequency；Inertia response module is foundation according to the mains frequency variation detected, controls torque and the rotating speed of Wind turbines respectively；The synchronous machine inertia response characteristic for realizing certain fixation inertia time constant of simulation, sends torque instruction to current transformer；Rotary speed instruction carries out generator running speed control for master control, and the clipping parameter of rotating speed control ring can in real time be adjusted according to the operating condition of mains frequency and unit.And provide a kind of inertia control method based on double-fed fan motor unit.The present invention effectively solves wind-powered electricity generation high permeability lower frequency stability problem.
Description
Technical field
The present invention relates to technical field of wind power, especially a kind of double-fed fan motor unit participates in the control system that mains frequency is adjusted
System and method.
Background technology
As ratio of the wind-powered electricity generation in power supply architecture constantly increases, the influence to power system security stable operation is increasingly
Significantly.The contradiction of some areas Wind Power Development and system safety operation gradually shows, and wind-abandoning phenomenon continuously emerges, and wind electricity digestion is
Critical issue through developing in a healthy way as influence Wind Power In China.So, continuous due to wind-powered electricity generation proportion in the power system
Soaring and variable speed constant frequency wind power technology extensive use, wind-electricity integration bring new challenge to power system stability operation,
The problems such as systems face such as voltage control, frequency adjusting and power quality.Thus, so that Wind turbines is provided for system complementary
Service such as frequency adjusting, idle control become the inexorable trend of Wind Power Development.
In general, power plant includes inertial response, primary frequency modulation and frequency modulation frequency modulation for the response of system frequency, and 3 kinds of frequencies
It has complementary functions, complement each other between rate control form.
Inertia response has the ability for injecting active power to power grid in short term, is activated until system primary frequency modulation controls.Tradition
Generator inertia responding ability is related with its physical quality block size, the physical phenomenon of synchronous motor, after generator type selecting determines,
Rotary inertia is steady state value and can not change.
Its rotor of double-fed wind power generator group is connect by transverter with power grid, and rotor speed and system frequency solution are caused
Coupling does not contribute the inertia of system, can not provide support for a FREQUENCY CONTROL.Since variable-speed wind-power unit uses electric power
Electronic converter realizes the decoupling control of mechanical output and system electromagnetic power, also therefore loses quickly having to frequency
Effect response, causes its rotation function to the inertia of whole system almost without contribution.
Wind turbines kinetic energy includes the kinetic energy of blade, gear-box, generator.Turbines vane inertia is used far above generator
Amount, but generator has higher rotating speed, so storing a large amount of kinetic energy in Wind turbines.
Invention content
In order to solve the poor deficiency of mains frequency stability that existing wind-electricity integration mode is brought, the present invention provides one
Kind effectively solves the inertia control system and method based on double-fed fan motor unit of wind-powered electricity generation high permeability lower frequency stability problem.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of inertia control system based on double-fed fan motor unit, including：
Mains frequency detection module, for quick and high-precision detect mains frequency；
Inertia response module controls Wind turbines respectively for being foundation according to the mains frequency variation detected
Torque and rotating speed；
In the inertia response module, certain synchronous machine inertia response characteristic for fixing inertia time constant is simulated, it will
Torque instruction sends current transformer to；Rotary speed instruction carries out generator running speed control, the amplitude limit of rotating speed control ring for master control
Parameter can in real time be adjusted according to the operating condition of mains frequency and unit.
A kind of inertia control method based on double-fed fan motor unit, the control method include the following steps：
1) frequency collection：Using Wind turbines outlet end as measurement point, the frequency of network voltage is acquired, and is filtered place
Reason；
2) direct torque：According to certain preset inertia time constant, the real-time rotating speed of detection generating set and obtain frequency
The frequency of detection module transmission calculates the additional torque of inertia response according to change rate, and Conventional torque control ring is turned
Square given value sends current transformer to after being added with additional torque；
3) rotating speed controls：Control is calculated according to current rotating speed, relative speed variation, the inertia time constant of predetermined analog to be turned
Fast initial target value carries out amplitude limiting processing to rotating speed initial target value, and the rotating speed before being controlled with reference to generator inertia carries out unit
The judgement of operating status, and clipping parameter is arranged according to rotating speed and mains frequency.
Further, in the step 2), my calculation formula of additional torque is as follows：
Wherein, Δ T is additional torque, and K is additional torque design factor, by unit rated capacity, rated frequency and power generation
Machine rotary speed parameter determines that f is mains frequency.
Further, in the step 3), rotating speed initial target value ωt, calculation formula is as follows：
Wherein, ωgFor generator current rotating speed；K is additional torque design factor；T is rotating speed controlling cycle；J is wind-force
Generating set inertia value；ωtFor rotating speed initial target value；For relative speed variation.
The present invention technical concept be：The rotor of double-fed wind power generator group is connect by transverter with power grid, causes to turn
Rotor speed is decoupled with system frequency, is not contributed the inertia of system, can not be provided support for a FREQUENCY CONTROL.But wind
Motor group kinetic energy includes the kinetic energy of blade, gear-box, generator.Turbines vane inertia is far above the inertia of generator, but sends out
Motor has higher rotating speed, so Wind turbines have a large amount of kinetic energy.Become since variable-speed wind-power unit uses power electronics
Parallel operation, Wind turbines being capable of quickly control response effects, therefore the Inertia Characteristics of consideration simulation conventional synchronous machine.
Mains frequency detects and acquisition module is using Wind turbines outlet end as test point, is carried out to the mains frequency of measurement low
Pass filter processing carries out torque according to the change rate (increasing or reducing) of mains frequency and rotating speed controls.
First, direct torque is calculated according to certain preset inertia time constant, the real-time rotating speed of generating set, frequency change rate
Go out the additional torque of inertia response, and unsteady flow is sent to after the torque reference value of Conventional torque control ring is added with additional torque
Device；
Secondly, rotating speed control calculates rotating speed according to the inertia time constant of current rotating speed, relative speed variation, predetermined analog
Desired value.
After carrying out amplitude limit finally, for rotating speed desired value given herein above, then carry out the rotating speed control of generator.For machine
The amplitude limit value of group needs the judgement of the rotating speed progress operating states of the units before being controlled according to generator inertia, and according to rotating speed and electricity
Net set of frequency clipping parameter.
Beneficial effects of the present invention are mainly manifested in：1. can quickly provide frequency support according to mains frequency variation；
2. since the Main Basiss of frequency support are frequency change rate, so inertia response frequency support effect is notable；Turn 3. using
The method that square and rotating speed control simultaneously, realizes the coupling between maximal power tracing control ring and inertia response control ring；4、
Using the method for rotating speed clipping parameter real-time change, smooth control of the unit in different traffic coverage rotating speeds ensure that.
Fig. 1 is direct torque schematic diagram.
Fig. 2 is rotating speed control and rotating speed amplitude limit schematic diagram.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig.1~Fig. 2, a kind of inertia control system based on double-fed fan motor unit, including：
Mains frequency detection module, for quick and high-precision detect mains frequency；
Inertia response module controls Wind turbines respectively for being foundation according to the mains frequency variation detected
Torque and rotating speed；
In the inertia response module, certain synchronous machine inertia response characteristic for fixing inertia time constant is simulated, it will
Torque instruction sends current transformer to；Rotary speed instruction carries out generator running speed control, the amplitude limit of rotating speed control ring for master control
Parameter can in real time be adjusted according to the operating condition of mains frequency and unit.
A kind of inertia control method based on double-fed fan motor unit, the control method include the following steps：
1) frequency collection：Using Wind turbines outlet end as measurement point, the frequency of network voltage is acquired, and is filtered place
Reason.
2) direct torque：According to certain preset inertia time constant, the real-time rotating speed of detection generating set and obtain frequency
The frequency of detection module transmission, the additional torque of inertia response is calculated according to change rate, and calculation formula is as follows：
Wherein, Δ T is additional torque, and K is additional torque design factor, by unit rated capacity, rated frequency, generator
The parameters such as rotating speed determine that f is mains frequency.
Current transformer is sent to after the torque reference value of Conventional torque control ring is added with additional torque.
3) rotating speed controls：At the beginning of rotating speed being calculated according to the inertia time constant of current rotating speed, relative speed variation, predetermined analog
Beginning desired value ωt, calculation formula is as follows：
Wherein, ωgFor generator current rotating speed；K is additional torque design factor；T is rotating speed controlling cycle；J is wind-force
Generating set inertia value；ωtFor rotating speed initial target value；For relative speed variation.
Amplitude limiting processing is carried out to rotating speed initial target value, the rotating speed before being controlled with reference to generator inertia carries out unit operation shape
The judgement of state, and according to rotating speed and mains frequency by carrying out clipping parameter setting to Wind turbines master control system parameter assignment.
Claims (4)
1. a kind of inertia control system based on double-fed fan motor unit, it is characterised in that：The inertia control system includes：
Mains frequency detection module, for detecting mains frequency；
Inertia response module controls turning for Wind turbines respectively for being foundation according to the mains frequency variation detected
Square and rotating speed；
In the inertia response module, certain synchronous machine inertia response characteristic for fixing inertia time constant is simulated, by torque
Instruction sends current transformer to；Rotary speed instruction carries out generator running speed control, the clipping parameter of rotating speed control ring for master control
It can in real time be adjusted according to the operating condition of mains frequency and unit.
2. the inertia controlling party that a kind of inertia control system using as described in claim 1 based on double-fed fan motor unit is realized
Method, it is characterised in that：The control method includes the following steps：
1) frequency collection：Using Wind turbines outlet end as measurement point, the frequency of network voltage is acquired, and is filtered；
2) direct torque：According to certain preset inertia time constant, the real-time rotating speed of detection generating set and obtain frequency detecting
The frequency of module transmission calculates the additional torque of inertia response according to frequency change rate, and Conventional torque control ring is turned
Square given value sends current transformer to after being added with additional torque；
3) rotating speed controls：At the beginning of control calculates rotating speed according to the inertia time constant of current rotating speed, relative speed variation, predetermined analog
Beginning desired value carries out amplitude limiting processing to rotating speed initial target value, and the rotating speed before being controlled with reference to generator inertia carries out unit operation
The judgement of state, and clipping parameter is arranged according to rotating speed and mains frequency.
3. inertia control method as claimed in claim 2, it is characterised in that：In the step 2), additional torque calculation formula
It is as follows：
Wherein, Δ T is additional torque, and K is additional torque design factor, is turned by unit rated capacity, rated frequency and generator
Fast parameter determines that f is mains frequency.
4. inertia control method as claimed in claim 2, it is characterised in that：In the step 3), rotating speed initial target value ωt,
Calculation formula is as follows：
Wherein, ωgFor generator current rotating speed；K is additional torque design factor；T is rotating speed controlling cycle；J is wind-driven generator
Group inertia value；ωtFor rotating speed initial target value；For relative speed variation.
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| CN201610576689.1A CN106130421B (en) | 2016-07-20 | 2016-07-20 | A kind of inertia control system and method based on double-fed fan motor unit |
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| CN201610576689.1A CN106130421B (en) | 2016-07-20 | 2016-07-20 | A kind of inertia control system and method based on double-fed fan motor unit |
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| CN106130421B true CN106130421B (en) | 2018-09-07 |
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| CN106532746B (en) * | 2016-12-27 | 2019-03-05 | 北京四方继保自动化股份有限公司 | A kind of wind power plant participates in the control system and implementation method of primary frequency modulation |
| CN107546759B (en) * | 2017-09-15 | 2020-06-19 | 南方电网科学研究院有限责任公司 | Energy storage optimization configuration method for power distribution network |
| CN107732943B (en) * | 2017-11-28 | 2020-03-17 | 重庆科凯前卫风电设备有限责任公司 | Wind power grid-connected frequency modulation method and system based on double-fed asynchronous wind driven generator |
| CN108418241B (en) * | 2018-01-10 | 2020-05-26 | 浙江运达风电股份有限公司 | Inertia response optimization control method for large wind turbine generator |
| CN108397347B (en) * | 2018-01-30 | 2019-12-24 | 浙江运达风电股份有限公司 | Rotating speed control method for ensuring stable inertia response control of large wind turbine generator |
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| CN109103937B (en) * | 2018-10-15 | 2020-04-03 | 浙江运达风电股份有限公司 | Rotating speed optimization control method and system for virtual inertia control of large wind turbine generator |
| CN111262256B (en) * | 2018-11-30 | 2024-06-14 | 北京金风科创风电设备有限公司 | Control method and equipment for primary frequency modulation of wind generating set |
| CN110867850B (en) * | 2019-10-31 | 2021-10-08 | 全球能源互联网研究院有限公司 | Method for calculating rotating speed of generator and parameters of wind turbine generator and wind turbine generator model |
| CN111338246B (en) * | 2020-03-02 | 2021-04-13 | 上海电气集团股份有限公司 | High-precision time synchronization control system of wind power converter |
| CN112103958B (en) * | 2020-09-25 | 2022-06-03 | 国电南瑞南京控制系统有限公司 | Frequency stabilization emergency control strategy correction method adaptive to power grid inertia change |
| CN112688346B (en) * | 2020-12-09 | 2024-06-07 | 国网江苏省电力有限公司连云港供电分公司 | Doubly-fed wind turbine generator system participating in power grid frequency modulation control system and control method thereof |
| CN113852095B (en) * | 2021-08-27 | 2023-09-29 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine generator inertia response control method and system |
| CN114050598B (en) * | 2021-11-30 | 2023-08-01 | 中国华能集团清洁能源技术研究院有限公司 | Inertia response control method and system for doubly-fed wind turbine generator |
| CN114301088A (en) * | 2021-12-13 | 2022-04-08 | 三一重能股份有限公司 | Inertia control method, device, equipment and medium of wind turbine generator and wind turbine generator |
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Address after: Hangzhou City, Zhejiang province 311106 Hangzhou Yuhang economic and Technological Development Zone (Qianjiang Economic Development Zone) wind Road No. 558 Applicant after: Zhejiang Windey Wind Power Co., Ltd. Address before: 310012 Xihu District, Hangzhou, Wen Road No. 391, West Lake international science and technology building, block A, floor two, 22 Applicant before: Zhejiang Windey Wind Power Co., Ltd. |
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Inventor after: Ye Hangye Inventor after: Yang Jing Inventor after: Xu Guodong Inventor after: Ying You Inventor after: Sun Yong Inventor after: Li Zhaoxia Inventor after: Zhu Changjiang Inventor before: Yang Jing Inventor before: Xu Guodong Inventor before: Ying You Inventor before: Sun Yong Inventor before: Li Zhaoxia Inventor before: Zhu Changjiang |
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