基于PSCAD/EMTDC的大规模交直流电网实际故障再现

doi:10.11930/j.issn.1004-9649.2014.9.100.6

摘要/Abstract

摘要： 针对2010年11月7日南方电网发生的北郊—增城甲线短路故障导致5回直流同时发生换相失败事件,基于电磁暂态仿真软件PSCAD/EMTDC,根据实际电网结构等值系统搭建了含直流详细模型的电磁暂态仿真模型。为保证交直流大电网的快速且准确的建模,确定了建模规模,提出了直流系统建模、发电机调节系统自定义与校核、大规模交直流电网分区建模调试等工程实用方法。在此基础上,对此次故障进行了仿真研究,成功再现了实际故障过程。通过仿真结果与实际故障录波的对比,证明了建模方法的有效性和所建模型的准确度。最后使用所建模型对广东500 kV重要站点进行了典型故障仿真分析,确定了不同故障类型下可能引起5回直流同时发生换相失败的故障区域。

关键词: PSCAD/EMTDC, 大规模交直流混合电网, 换相失败, 实际故障

Abstract: Aimed at analyzing the actual short-circuit fault on the Beijiao-Zengcheng line which led to simultaneous commutation failures in 5 DC lines of China Southern Power Grid, the electromagnetic transient simulation model including detailed DC models was built according to the equivalent model of the actual grid based on the electromagnetic transient simulation software PSCAD/EMTDC. In order to ensure fast and accurate modeling to reflect real failure process, the main difficulties were analyzed and corresponding solutions during the large-scale AC/DC power system modeling process were also proposed, in which some engineering solving methods, such as the modeling scale, DC system modeling, user-defined model, accurate and fast modeling of large-scale system, etc., were defined. On this basis, the fault was simulated successfully by using the PSCAD/EMTDC model, which reproduced the actual failure process. By comparing the simulation results with the actual recorded wave results, it was demonstrated that the modeling method is practical and effective to make the grid model accurate and reliable and able to truly reflect the actual dynamics of the system. With the model, the fault scan of Guangdong 500kV important sites was carried out to determine the fault areas those may cause simultaneous commutation failures in 5 DC lines.

Key words: PSCAD/EMTDC, large-scale AC/DC system, commutation failure, actual fault

中图分类号:

TM712

熊卿, 席亮, 周宝荣, 赵勇, 洪潮, 夏成军. 基于PSCAD/EMTDC的大规模交直流电网实际故障再现[J]. 中国电力, 2014, 47(9): 100-106.

XIONG Qing, XI Liang, ZHOU Bao-rong, ZHAO Yong, HONG Chao, XIA Cheng-jun. Simulating Reappearing of an Actual Fault in Large-Scale AC/DC Power System Based on PSCAD/EMTDC[J]. Electric Power, 2014, 47(9): 100-106.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2014.9.100.6

https://www.electricpower.com.cn/CN/Y2014/V47/I9/100

参考文献

[1] 汤涌,卜广全,易俊. 印度“7·30”、“7·31”大停电事故分析及启示[J]. 中国电机工程学报,2012,32（25）：23,167-174.
TANG Yong, BU Guang-quan, YI Jun. Analysis and lessons of the blackout in Indian Power Grid on July 30 and 31, 2012[J]. Proceedings of the CSEE, 2012, 32(25): 23, 167-174.
[2] 吴小辰,周保荣,柳勇军,等. 巴西2009年11月10日大停电原因分析及对中国电网启示[J]. 中国电力,2010,43（11）：5-9.
WU Xiao-chen, ZHOU Bao-rong, LIU Yong-jun, et al . Analysis of Brazilian blackout on November 10th, 2009 and revelations to security for China’s power grid [J]. Electric Power, 2010, 43(11):5-9.
[3] 贾旭东,李庚银,赵成勇,等. 基于RTDS的交直流混合系统实际故障再现分析[J]. 电力系统自动化,2009,33（10）：54-58.
JIA Xu-dong, LI Geng-yin, ZHAO Cheng-yong, et al . Real-time simulation studies of actual faults in AC/DC power system based on RTDS[J]. Automation of Electric Power Systems, 2009, 33 (10): 54-58.
[4] 贾旭东,李庚银,彭谦,等. 基于RTDS的“1·15”高肇直流极2闭锁事故仿真[J]. 电网技术,2009,33（12）：26-30.
JIA Xu-dong, LI Geng-yin, PENG Qian, et al . RTDS based simulation of pole 2 block fault of HVDC project from Gaopo to Zhaoqing occurred on Jan.15 [J]. Power System Technology, 2009, 33(12): 26-30.
[5] 黄宗君,李兴源,晁剑,等. 贵阳南部电网“7·7”事故的仿真反演和分析[J]. 电力系统自动化,2007,31（9）：95-100.
HUANG Zong-jun, LI Xing-yuan, CHAO Jian, et al . Guiyang South Grid “7·7” faults simulation and analysis[J]. Automation of Electric Power Systems, 2007, 31(9): 95-100.
[6] HOCKENBERRY J R, LESIEUTEBC. Evaluation of uncertainty in dynamic simulations of power system models: the probabilistic collocation method[J]. IEEE Trans on Power Systems, 2004, 19 (3): 1483-1491.
[7] PEREIRA L, KOSTEREV D, MACHIN P, et al . An interim dynamic induction motor model for stability studies in the WSCC[J]. IEEE Trans on Power Systems, 2002, 17(4): 1108-1115.
[8] KOSTEREV D N, TAYLOR C W, MITTELSTADT W A. Model validation for the August 10, 1996 WSCC system outage [J]. IEEE Trans on Power Systems, 1999, 14(3): 967-979.
[9] 朱韬析,王超. 天广直流输电系统换相失败的分析及处理[J]. 高电压技术,2008,34（8）：1769-1773.
ZHU Tao-xi, WANG Chao. Analysis and recovery of commutation failure in Tian-Guang HVDC transmission system[J]. High Voltage Engineering, 2008, 34(8): 1769-1773.
[10] 吴萍,林伟芳,孙华东,等. 多馈入直流输电系统换相失败机制及特性[J]. 电网技术,2012,36（5）：275-280.
WU Ping, LIN Wei-fang, SUN Hua-dong, et al . Research and electromechanical transient simulation on mechanism of commutation failure in multi-infeed HVDC power transmission system [J]. Power System Technology, 2012, 36(5): 275-280.
[11] 程道卫,刘天琪,张金,等. 多落点直流输电系统换相失败影响因素的仿真分析[J]. 电网技术,2010,34（11）：59-64.
CHENG Dao-wei, LIU Tian-qi, ZHANG Jin, et al . Simulative analysis on factors impacting commutation failure in multi- terminal HVDC transmission system [J]. Power System Technology, 2010, 34(11): 59-64.
[12] 南方电网科学研究院. 多直流落点系统动态行为的综合分析技术及其应用研究[R]. 广州：南方电网科学研究院,2011.
[13] 陈新琪,顾益磊,裘鹏,等. 大规模交直流系统电磁暂态仿真关键技术[J]. 中国电力,2012,45（12）：76-80.
CHEN Xin-qi, GU Yi-lei, QIU Peng, et al . Key techniques for electromagnetic transient simulation of large-scale AC/DC power system [J]. Electric Power, 2012, 45(12): 76-80.
[14] 赵勇,欧开健,张东辉,等. 云广直流并联运行时南方电网系统模型简化的研究[J]. 南方电网技术,2010,4（2）：39-42.
ZHAO Yong, OU Kai-jian, ZHANG Dong-hui, et al . Study on reduced system model of china southern power grid with Yunnan-Guangdong ±800 kV DC transmission system[J]. Southern Power System Technology, 2010, 4(2): 39-42.
[15] 郑晓冬,邰能灵,杨光亮,等. 特高压直流输电系统的建模与仿真[J]. 电力自动化设备,2012,32（7）：10-14.
ZHENG Xiao-dong, TAI Neng-ling, YANG Guang-liang, et al . Modeling and simulation of UHVDC system[J]. Electric Power Automation Equipment, 2012, 32(7): 10-14.
[16] 王晶芳,王智冬,李新年,等. 含特高压直流的多馈入交直流系统动态特性仿真[J]. 电力系统自动化,2007,31（11）：97-102.
WANG Jing-fang, WANG Zhi-dong, LI Xin-nian, et al . Simulation to study the dynamic performance of multi-infeed AC/DC power systems including UHVDC[J]. Automation of Electric Power Systems, 2007, 31(11): 97-102.