储能型双馈风电机与SVG的无功电压联动控制策略

doi:10.3969/j.issn.1008-0198.2022.03.008

湖南电力 ›› 2022, Vol. 42 ›› Issue (3): 43-48.doi: 10.3969/j.issn.1008-0198.2022.03.008

储能型双馈风电机与SVG的无功电压联动控制策略

李圣清¹, 文颜烯¹, 郑剑¹, 朱光明²,陈欣¹

1.湖南工业大学电气与信息工程学院,湖南株洲 412007;
2.国网湖南省电力有限公司电力科学研究院,湖南长沙 410007

收稿日期:2021-12-17 修回日期:2022-01-10 出版日期:2022-06-25 发布日期:2025-08-05
作者简介:李圣清(1961),男,博士,教授,博士生导师,主要研究方向为电能质量、微电网理论及新能源发电及应用技术等。文颜烯(1999),女,硕士,主要研究方向为风力发电并网技术及电能质量控制。
基金资助:
国网湖南省电力有限公司电科院实验室开放基金项目(HNDKY-KF-202101)

Linkage Control Strategy of Energy-Storage Dual-Feed Wind Unit and SVG Reactive Voltage

LI Shengqing¹, WEN Yanxi¹, ZHENG Jian¹, ZHU Guangming², CHEN Xin¹

1. School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China;
2. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, China

Received:2021-12-17 Revised:2022-01-10 Online:2022-06-25 Published:2025-08-05

摘要/Abstract

摘要： 针对双馈式风机并网点电压波动、风机传统联动控制难以实现电压支撑的问题,提出一种储能型双馈感应发电机(Doubly Fed Induction Generator,DFIG)与静止无功发生器(Static Var Generator,SVG)的无功联动控制策略。该策略根据并网点电压跌落时的无功需求情况,将储能型DFIG联动SVG分级进行无功补偿,第一级优先由机组自身完成无功支撑,网侧变流器由单位功率因数模式转换到无功补偿模式;剩余的无功缺额, 投入SVG协助机组进行无功补偿;第二级根据各机组无功功率的实时调节范围,将分配至风电机组的无功容量向各机组进行逐一分配。当并网点电压跌落大于30%时,需考虑投入超级电容器以确保机组的正常运行。仿真结果表明,该策略在电压跌落30%时,能抑制15%的电压跌落;2 s内实现98%无功电压支撑,可以快速有效地提高双馈风电场低电压穿越能力。

关键词: DFIG, SVG, 联动控制, 无功功率, 无功电压

Abstract: This paper aims at the problem that the traditional linkage control of doubly fed fan is difficult to realize voltage support due to the voltage fluctuation of parallel network of doubly fed fan. A reactive power linkage control strategy of energy storage doubly fed induction generator (DFIG) and static var generator (SVG) is proposed. According to the reactive power demand in case of voltage drop at the parallel node, the energy storage DFIG is linked with SVG to carry out reactive power compensation by stages. In the first stage, the reactive power support is completed by the unit itself, the grid side converter is converted from the unit power factor mode to the reactive power compensation mode and the remaining reactive power deficiency is put into SVG to assist the unit in reactive power compensation.In the second level, the reactive power capacity allocated to the wind turbine is distributed to each unit one by one, according to the real-time regulation range of reactive power of each unit. When the voltage drop of the parallel node is greater than 30%, it is necessary to consider putting the super capacitor into operation to ensure the normal operation of the unit. The simulation results show that the strategy can suppress 15% voltage drop when the voltage drop is 30%; 98% reactive power and voltage support can be realized within 2 seconds, which can quickly and effectively improve the low-voltage ride through capability of doubly fed wind farm.

Key words: DFIG, SVG, linkage control, reactive power, reactive voltage

中图分类号:

李圣清, 文颜烯, 郑剑, 朱光明,陈欣. 储能型双馈风电机与SVG的无功电压联动控制策略[J]. 湖南电力, 2022, 42(3): 43-48.

LI Shengqing, WEN Yanxi, ZHENG Jian, ZHU Guangming, CHEN Xin. Linkage Control Strategy of Energy-Storage Dual-Feed Wind Unit and SVG Reactive Voltage[J]. Hunan Electric Power, 2022, 42(3): 43-48.

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储能型双馈风电机与SVG的无功电压联动控制策略

Linkage Control Strategy of Energy-Storage Dual-Feed Wind Unit and SVG Reactive Voltage

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