并联型有源次同步振荡抑制器阻尼控制策略优化设计

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摘要

采用电压源型换流器的并联型有源次同步振荡抑制技术近年来受到广泛关注。已有的并联型有源次同步振荡抑制器(ASS)的双频调制阻尼控制策略未考虑系统次同步和超同步电流不同的分流特性,因此,其抑制能力并不能达到最优。针对这一问题,首先分析并联型ASS的基本原理,提出了只发次同步电流或超同步电流的单频调制阻尼控制策略以及ASS关键参数设计方法;针对不同的系统特性,分析不同阻尼控制策略的抑制效果,提出了ASS阻尼控制优化设计方法。在PSCAD/EMTDC软件中搭建发电机组经固定串补和直流输电送出系统仿真模型,对不同的阻尼控制策略进行了对比,结果证明了所提阻尼控制策略优化方法的正确性。

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	罗超
	肖湘宁
	张剑
	杨文超
	陈鹏伟

关键词 ：电压源型换流器, 次同步振荡, 次同步电流, 超同步电流, 阻尼控制策略优化

Abstract：

The parallel active subsynchronous oscillation suppressor technology based on the voltage source converter has caused wide public attentions over recent years.The double frequency damping control strategy of the existing parallel active subsynchronous oscillation suppressor(ASS) neglects the shunt ratio for the subsynchronous current and the supersynchronous current.Therefore,its optimal damping ability cannot be achieved.Aiming at this problem,the fundamental principle of the ASS has been analyzed firstly.And then the single frequency modulation method injecting the subsynchronous current or the supersynchronous current,as well as its corresponding parameter design method,has been proposed.For different systems,suppression effects of different damping control strategies have been analyzed.Then the design method of the ASS optimal damping control strategy is proposed.Transmission systems of generator with fixed series capacitor compensation and high voltage direct current are built in PSCAD/EMTDC respectively.Simulations are carried out and results show that the design and analysis of the optimal damping control strategy are effectiveness.

Key words： Voltage source converter subsynchronous oscillation subsynchronous current supersynchronous current damping control strategy optimization

收稿日期: 2015-05-25 出版日期: 2016-11-21

PACS:

TM712

作者简介: 罗超男,1987年生,博士研究生,研究方向为电力电子技术在电力系统中的应用。E-mail:chaoluo2013@163.com(通信作者)肖湘宁男,1953年生,教授,博士生导师,研究方向为新能源电网、电力系统电能质量等。E-mail:xxn@ncepu.edu.cn

引用本文:

罗超,肖湘宁,张剑,杨文超,陈鹏伟. 并联型有源次同步振荡抑制器阻尼控制策略优化设计[J]. 电工技术学报, 2016, 31(21): 150-158. Luo Chao,Xiao Xiangning,Zhang Jian,Yang Wenchao,Chen Pengwei. The Optimal Damping Control Strategy Design of Parallel Active Subsynchronous Oscillation Suppressor. Transactions of China Electrotechnical Society, 2016, 31(21): 150-158.

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https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I21/150

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