特高压送端接入系统方式及输电能力研究  

Research on Grid-Connection Modes of Sending Ends and Transmission Capability of UHV Transmission Lines

作　　者：艾琳[1] 郭雁珩[1] 徐国新[1] 

机构地区：[1]水电水利规划设计总院,北京100120

出　　处：《中国电力》2017年第2期29-33,39,共6页Electric Power

摘　　要：为了提高特高压系统稳定性和通道送电能力,提出了在特高压交流电网发展的不同阶段选择适宜的送端站接入方式的方法。对送端特高压站不同接入系统方式下的系统稳定性进行了研究,重点针对落地方式中电磁环网结构对地区电网稳定的影响进行分析,在此基础上结合特高压电网发展的不同阶段,对送端站适宜的接入系统方式进行分析。结果表明,送端站采用适宜的接入方式能够提高特高压系统的稳定性和通道送电能力。最后,以实际系统为例,验证了所提方法的可行性和有效性。In order to improve the system stability and transmission capability of UHV transmission line, the paper proposes a method for choosing suitable grid-connection modes of sending ends in different UHV AC grid development stages. Firstly, the system stability is studied for different grid-connection modes of UHV sending stations. The impacts of electromagnetic looped network structure on stabilities of regional power system are analyzed. And then, the suitable grid-connection modes of sending ends are analyzed for different UHV grid development stages. The results show that suitable grid-connection modes of sending ends can improve the stability of the UHV system and the transmission capacity of transmission corridors. Finally, the feasibility and validity of the proposed method were verified through teal power system.

关 键 词：特高压 送端 接入系统方式 输电能力 系统稳定性 电磁环网 

分 类 号：TM723[电气工程—电力系统及自动化]