机组参与调节的双馈机组低电压穿越综合控制策略

doi:10.11930/j.issn.1004-9649.2016.03.141.07

中国电力 ›› 2016, Vol. 49 ›› Issue (3): 141-147.DOI: 10.11930/j.issn.1004-9649.2016.03.141.07

机组参与调节的双馈机组低电压穿越综合控制策略

李凤婷¹，张谦¹，黄蓉²，何世恩²

1. 新疆大学电气工程学院，新疆乌鲁木齐 830047;
2. 甘肃省电力公司风电技术中心，甘肃兰州 730050

收稿日期:2016-01-04 出版日期:2016-03-20 发布日期:2016-04-08
作者简介:李凤婷（1965—），女，河北平山人，教授，从事新能源并网运行控制与继电保护研究。E-mail: xjlft2009@sina.com
基金资助:
国家自然科学基金资助项目（51267019，51467019）

Integrated Control Strategy for Low Voltage Ride Through of DFIG Involved in the Regulation

LI Fengting¹, ZHANG Qian¹, HUANG Rong², HE Shi’en²

1. Electrical Engineering College, Xinjiang University, Urumqi 830047, China;
2. Wind Power Technology Center, Gansu Electric Power Corporation, Lanzhou 730050, China

Received:2016-01-04 Online:2016-03-20 Published:2016-04-08
Supported by:
This work is supported by National Natural Science Foundation of China (No. 51267019, 51467019).

摘要/Abstract

摘要： 在分析双馈风电机组低电压穿越技术研究现状及不足的基础上，以提升机组低电压穿越能力和改善故障穿越结束后风电机组的稳定运行能力为出发点，提出了一种机组参与调节的适应电压跌落程度的低电压穿越综合策略。采用卸荷电路和变阻值制动电阻代替传统的Crowbar电路，网侧逆变器根据电网电压跌落程度提供变功率因数无功支持，提高机组在电压跌落结束后的稳定运行能力。采用基于磁控电抗器的动态无功补偿装置进行集中补偿，降低投资成本。构建仿真模型仿真验证了该综合控制策略的正确性与有效性。仿真结果表明该方法可以更好的适应电压跌落程度，实现双馈风电机组的低电压穿越能力，同时还可以增强故障穿越结束后风电机组稳定运行能力。

关键词: 双馈风电机组, 低电压穿越, 综合策略, 变功率因数无功控制

Abstract: Based on the analysis of the current situation and the weakness of the low voltage ride through technology of the doubly-fed induction generator, an integrated control strategy that the wind turbine is involved in the regulation is proposed, which can adapt to different Voltage Dips. In the proposed control strategy, the crowbar circuit is replaced by DC-Chopper and the dynamic braking resistor; variable power factor reactive power compensation is provided by the grid side converter based on different Voltage Dips to enhance the stability of the wind turbine after fault ride-through. The dynamic reactive power compensation device-based MCR(MSVC) is used to reduce cost. The model is built to testify the correctness and validity of the proposed control method. Simulation results show that the method better adapts to different Voltage Dips, achieving the capability of low voltage ride through, and enhancing the stability of the unit after fault ride-through in the meanwhile.

Key words: double-fed wind turbines, low voltage ride through, integrated control strategy, variable power factor control

中图分类号:

TM761

李凤婷，张谦，黄蓉，何世恩. 机组参与调节的双馈机组低电压穿越综合控制策略[J]. 中国电力, 2016, 49(3): 141-147.

LI Fengting, ZHANG Qian, HUANG Rong, HE Shi’en. Integrated Control Strategy for Low Voltage Ride Through of DFIG Involved in the Regulation[J]. Electric Power, 2016, 49(3): 141-147.

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https://www.electricpower.com.cn/CN/Y2016/V49/I3/141

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机组参与调节的双馈机组低电压穿越综合控制策略

Integrated Control Strategy for Low Voltage Ride Through of DFIG Involved in the Regulation

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机组参与调节的双馈机组低电压穿越综合控制策略

Integrated Control Strategy for Low Voltage Ride Through of DFIG Involved in the Regulation

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