直流电流测量装置对特高压直流输电系统运行稳定性的影响分析  

Analysis of influence of DC current measure equipment to UHVDC transmission system

作　　者：杨光源[1] 谢惠藩[1] 周全[1] 王海军[1] 

机构地区：[1]中国南方电网超高压输电公司检修试验中心,广东广州510663

出　　处：《周口师范学院学报》2013年第2期40-44,共5页Journal of Zhoukou Normal University

摘　　要：云广特高压直流输电系统是中国第一条±800kV电压等级的直流输电工程.由于传输功率高,其稳定性关系到整个电网的安全运行.直流电流测量装置(CT)是直流输电控制保护系统信号采集的重要模块,以2012年9月12日云广特高压直流输电系统一起单极闭锁事件为例,分析了CT装置对整个特高压直流输电系统运行稳定性的影响,对比考察了历次换相失败的历史电流数据,并对电流谐波状况进行分析,定位发生故障的为极1母线CT二次测量回路.Yunnan-Guangdong Ultra High Voltage Direct Current （UHVDC） Transmission System, which is the first ±800kV UHVDC system, plays an important role in the safe operation of the whole power grid because of its high trans- mission capacity. DC current measure equipment （CT） is the key equipment of UHVDC control and protection system. This paper presented the influence of CT to the stability of UHVDC system through analyzing the One Pole Block accident of Yunnan - Guangdong UHVDC system happened On 19 September 2012. According to the comparison with history data and harmonic wave analysis, the fault was fixed at the secondary measurement loop of Pole One lower side DC bus - bar CT.

关 键 词：云广特高压直流输电系统 换相失败 CT故障 运行稳定性 谐波分析 

分 类 号：TM8[电气工程—高电压与绝缘技术]