云广特高压直流孤岛运行方式下单极闭锁故障分析.pdf

第 36 卷 第 7 期 中 国 电 机 工 程 学 报 Vol.36 No.7 Apr. 5, 2016 2016 年 4 月 5 日 Proceedings of the CSEE ©2016 Chin.Soc.for Elec.Eng. 1801 DOI ：10.13334/j.0258-8013.pcsee.2016.07.005 文章编号：0258-8013 (2016) 07-1801-07 中图分类号：TM 72 云广特高压直流孤岛运行方式下单极闭锁故障分析 洪潮 (南方电网科学研究院，广东省 广州市 510080) Mono-polar Blocking Fault Analysis of Yunnan-Guangdong UHVDC System Islanding Operation HONG Chao (Electric Power Research Institute, CSG, Guangzhou 510080, Guangdong Province, China) ABSTRACT: To be used as a normal operation mode, 0 引言 islanding operation at the sending terminal of Yunnan- 能源资源分布与经济发展水平的不均衡，决定 Guangdong ultra high voltage direct current (UHVDC) transmission system should be able to withstand the impact of 了中国南方电网大容量、远距离西电东送的特点。 various typical faults which can occur during long-time 直流输电在大规模远距离电力输送方面具有显著 operation. The DC system mono-polar blocking fault is one of 优势。随着西电东送输电规模和输送距离的增大， the serious faults that the islanding operation must be able to 南方电网建成投产了云南至广东±800kV 、5 GW 直 bear. Based on the islanding operation on-site commissioning 流输电工程(云广直流) 。然而，在交直流并联架构 tests, the testing results of mono-polar blocking fault under the 系统中，大容量、远距离特高压直流(ultra high rated DC power operation were analyzed. Using accurate electromagnetic transient simulations of the islanding operation voltage direct current ，UHVDC)工程投运，使“强 system, the influence of PSS reactive power inverse-regulation 直弱交”特性更为突出，直流闭锁故障对电网稳定 of generation