摘要
根据天广500kV直流输电工程投运初期南方电网的实际运行工况,对天广交直流输电系统并联运行的稳定性及输电能力进行分析研究。研究结果表明,天广直流输电工程投产后与天广交流双回输电线路并联运行,南方电网的稳定性明显提高。天广交直流系统在天生桥出口断面送电能力可达到3600MW。为保证系统的安全稳定运行,当直流线路发生单双极故障时需采取适当的稳定措施。同时,广西电网运行条件的变化对天广交直流输电系统安全稳定运行有明显影响,增强广西电网动态无功支持能力对提高天广交直流输电系统的送电能力有重要作用。
The stability and transmission ability of the parallel operation in Tianguang AC-DC hybrid system is analyzed,based on the actual operation conditions of the power system in the south China in the early period of operation of Tianguang500kV HVDC system.It is concluded in the study that the stability of the network is obviously improved because of the Tianguang HVDC project and its operation in parallel with Tianguang HVAC transmission lines,and the total transmission capability in Tianshengqiao can be raised to3600MW in the system.To assure the stability operation,it is necessary to take measures in the faults of the monopole and bi-pole in DC lines.Due to the evident effect of operation condition changes in Guangxi power system on stability operation of the system,To strengthen the dynamic reactive power capability in Guangxi network seems important to enhance the transmission ability of Tianguang AC-DC hybrid system.
出处
《中国电力》
CSCD
北大核心
2002年第1期46-49,共4页
Electric Power
关键词
交直流并联系统
运行稳定性
电网
电力系统
AC-DC hybrid system
parallel operation
transmission ability
stability
stability measure
