文章摘要
王维,赵梦阳,唐小波,等.接地故障下的SVC优化设计及其对后续换相失败控制策略[J].电力系统自动化. DOI: 10.7500/AEPS20190117005.
Wang Wei,ZHAO Mengyang,TANG Xiaobo, et al.Optimization Design of Static Var Compensation and its Control Strategy for Subsequent Commutation Failure with Grounding Fault[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20190117005.
接地故障下的SVC优化设计及其对后续换相失败控制策略
Optimization Design of Static Var Compensation and its Control Strategy for Subsequent Commutation Failure with Grounding Fault
DOI:10.7500/AEPS20190117005
关键词: 高压直流输电  换相失败  接地故障  SVC  控制策略
KeyWords: HVDC  commutation failure  grounding fault  SVC  control strategy
上网日期:2019-07-12
基金项目:智能电网保护和运行控制国家重点实验室开放课题研究项目(2017111TS90183)
作者单位E-mail
王维 南京师范大学 wangw_seu@163.com 
赵梦阳 南京师范大学 484758283@qq.com 
唐小波 南京师范大学 61058@njnu.edu.cn 
雷杰 南京师范大学 940650668@qq.com 
刘福锁 智能电网保护和运行控制国家重点实验室
南瑞集团(国网电力科学研究院)有限公司 
896815052@qq.com 
摘要:
      针对高压直流输电建设过程中存在的运行风险与故障影响,本文以交流侧常见的接地故障为问题导向,探索无功补偿设备(SVC)的优化设计方法及其新型控制策略,以提高直流输电系统抵御后续换相失败的能力,保证接地故障条件下输电系统的运行稳定性。理论分析与结果对比表明,以故障发生时的换流母线电压跌落为判别依据,通过合理配置FC电容组和TCR中电感的容量,并对无功补偿过程中的FC切换与TCR触发角进行逻辑优化控制,不仅可以有效抵御后续换相失败的风险,还能解决SVC补偿过程中的电压“反调”。
Abstract:
      In view of the operational risks and faults in the construction process of HVDC transmission, this paper takes the common grounding faults on the AC side as the problem orientation, to explore the optimization design method of reactive power compensation equipment (SVC) and its new control strategy to improve the HVDC transmission system. It resists the ability of follow-up commutation failure to ensure the stability of the transmission system in grounding fault. The comparison between theoretical analysis and results shows that the voltage drops of the commutated busbar when the fault is used as the basis for judging the capacity of the FC capacitor group and the inductor in the TCR, and the logic of the FC switching and TCR firing angle in the reactive power compensation process. Optimized control can not only effectively resist the risk of follow-up commutation failure, but also solve the voltage “reverse adjustment” in the SVC compensation process.
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