文章摘要
李兆伟,吴雪莲,曹路,等.抑制直流连续换相失败的调相机紧急控制研究[J].电力系统自动化. DOI: 10.7500/AEPS20170726005.
LI Zhaowei,WU Xuelian,CAO Lu, et al.Research on Emergency Control of Synchronous Condenser to Suppress DC Continuous Commutation Failure[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20170726005.
抑制直流连续换相失败的调相机紧急控制研究
Research on Emergency Control of Synchronous Condenser to Suppress DC Continuous Commutation Failure
DOI:10.7500/AEPS20170726005
关键词: 多直流馈入电网  直流连续换相失败  调相机  紧急控制
KeyWords: multi-infeed DC system  DC continuous commutation failure  modulator  emergency control
上网日期:2018-06-06
基金项目:
作者单位E-mail
李兆伟 南瑞集团公司国网电力科学研究院 lizhaowei1@sgepri.sgcc.com.cn 
吴雪莲 南瑞集团公司国网电力科学研究院 wuxuelian@sgepri.sgcc.com.cn 
曹路 国家电网公司华东分部 cao_l@ec.sgcc.com.cn 
侯玉强 南瑞集团公司国网电力科学研究院 houyuqiang@sgepri.sgcc.com.cn 
李威 南瑞集团公司国网电力科学研究院 liwei10@sgepri.sgcc.com.cn 
刘福锁 南瑞集团公司国网电力科学研究院 liufusuo@sgepri.sgcc.com.cn 
摘要:
      多直流馈入受端电网的换相失败是威胁系统安全的重要问题,为增强系统的动态无功支撑能力,降低直流换相失败概率,国家电网公司将在全网部分直流换流站内配置一定数量的调相机。本文首先分析了调相机投运对电网直流换相失败特性的影响,针对常规调相机控制方式在抑制直流连续换相失败方面的不足,分析了调相机紧急控制对抑制直流连续换相失败的效果,根据实际电网中直流连续换相失败特点及控制要求,设计了预防直流连续换相失败的调相机紧急控制系统架构,并提出了调相机紧急控制的实现方法,基于实际电网仿真验证了所提控制架构和方法的有效性。
Abstract:
      DC commutation failure of the multi-infeed DC system is an important issue that threatens the security of power grid. In order to enhance the dynamic reactive power support capability of the system and reduce the probability of DC commutation failure, the State Grid Corporation will allocate a certain number of modulators in part of the DC converter stations of the whole network. In this paper, the impact of the commissioning of the modulators on the DC commutation failure characteristics is analyzed. In view of the shortcomings of the conventional control mode of the modulators in suppressing the continuous commutation failure of the DC, the effect of the modulators in the emergency control on the DC continuous commutation failure is analyzed. According to the characteristics of the continuous commutation failure and the control requirements in the actual grid, the emergency control system architecture for preventing DC continuous commutation failure is designed, and the realization method of the emergency control of the modulators is put forward. The effectiveness of the proposed control architecture and method is verified based on the actual grid simulation.
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