Method for testing dynamic model parameters of wind power plant

Patent metadata

Field	Value
Publication number	US-9903896-B2
Application number	US-201414905279-A
Country	US
Kind code	B2
Filing date	Apr 2, 2014
Priority date	Jul 16, 2013
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

The present invention discloses a testing method for dynamic model parameters of a wind power plant, wherein under testing conditions including stable running of wind turbine generators and reactive-load compensation equipment, stable wind speed between a cut-in wind speed and a rated wind speed, and the wind power plant output smaller than a rated output, finishes a wind speed transient disturbance test, a wind power plant unit tripping and inputting disturbance test, a wind power plant power change test, a disturbance test for reactive-load compensation equipment of the wind power plant, a tripping disturbance test for hydroelectric power plant and thermal power plant near the wind power plant and a manual single-phase ground short circuit test at the outgoing line part of the wind power plant, and records running curves of the wind power plant under each condition to finish the parameter test. The present invention realizes the advantage of providing precise measurement data for the stability analysis of an electric power system and the production dispatching of a power grid.

First claim

The invention claimed is:

1. A testing method for dynamic model parameters of a wind power plant is characterized by comprising the following steps:
testing conditions include stable running of wind turbine generators and reactive-load compensation equipment, stable wind speed between a cut-in wind speed and a rated wind speed, and the wind power plant output smaller than a rated output;
step 1, under the stable grid access running condition of the wind power plant, recording running curves of the wind power plant, more specifically, recording the curves of the situation changes of the active power and reactive power of the wind power plant, the active power and reactive power of each feeder line, the output voltage and current of wind turbine generators, the voltage and current of the alternating current side and direct current side of a transducer, and the pitch angles of the wind turbine generators;
step 2, under the stable grid access running condition of the wind power plant, removing all the wind turbine generators on one feeder line, communicating all the wind turbine generators on said feeder line after the power of the wind power plant stabilizes, recording the running curves of the wind power plant, more specifically, recording the curves of the situation changes of the active power and reactive power of the wind power plant, the active power and reactive power of each feeder line, the output voltage and current of the wind turbine generators, the voltage and current of the alternating current side and direct current side of the transducer, and the pitch angles of the wind turbine generators;
step 3, under the stable grid access running condition of the wind power plant, inputting a wind power plant monitoring system to a power closed loop, firstly, carrying out a given active power signal step on the monitoring system, more specifically, performing a lower step test for a given power value, then performing an upper step test for the given power value after the power of the wind power plant stabilizes; secondly, recording the running curves of the wind power plant, more specifically, recording the curves of the situation changes of the active power and reactive power of the wind power plant, the active power and reactive power of each feeder line, the output voltage and current of the wind turbine generators, the voltage and current of the alternating current side and direct current side of the transducer, and the pitch angles of the wind turbine generators;
step 4, under the stable grid access running condition of the wind power plant, disturbing the reactive-load compensation equipment in the wind power plant, and then recording the running curves of the wind power plant, more specifically, recording the curves of the situation changes of the active power and reactive power of the wind power plant, the active power and reactive power of each feeder line, the output voltage and current of the wind turbine generators, the voltage and current of the alternating current side and direct current side of the transducer, and the pitch angles of the wind turbine generators;
step 5, under the stable grid access running condition of the wind power plant, switching the wind turbine generators to hydroelectric generating units or thermal power generating units near the wind power plant, and then recording the running curves of the wind power plant, more specifically, recording the curves of the situation changes of the active power and reactive power of the wind power plant, the active power and reactive power of each feeder line, the output voltage and current of the wind turbine generators, the voltage and current of the alternating current side and direct current side of the transducer, and the pitch angles of the wind turbine generators;
step 6, under the stable grid access running condition of the wind power plant, carrying out single-phase ground short circuit on a lead at the output end of the wind power plant, and then recording the running curves of the wind power plant, more specifically, recording the curves of the situation changes of the active power and reactive power of the wind power plant, the active power and reactive power of each feeder line, the output voltage and current of the wind turbine generators, the voltage and current of the alternating current side and direct current side of the transducer, and the pitch angles of the wind turbine generators;
step 7, comparing the running curves of the wind power plant recorded in the step 1 with that in the step 6 to finish the test for the dynamic model parameters of the wind power plant.

Assignees

• Gansu Electric Power Corporation Wind Power Tech Center
• State Grid Gansu Eletric Power Corp
• State Grid Corp China
• State Grid Gansu Electric Power Corp

Inventors

• Wang Ningbo
• Lu Liang
• Wang Duo
• Zhou Shiyuan
• Zhang Yuhong
• Ding Kun
• Jin Dan
• Zhao Long
• He Shien
• Han Xushan
• Ma Yanhong
• Zhou Qiang
• Wang Dingmei
• Xu Hongquan
• Liu Guangtu
• Wang Xiaoyong
• Li Jin
• Ma Ming
• Zhang Jinping
• Huang Rong
• Lv Qingquan
• Zhang Jianmei

Classifications

• G01R21/1331 Primary

  Measuring real or reactive component, measuring apparent energy · CPC title

• G06F11/26

  Functional testing · CPC title

• G06F30/20 Primary

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• G01R21/003

  Measuring reactive component · CPC title

• G06F17/5009

  Physics · mapped topic