变压器励磁对直流输电系统基波保护的影响  

The Influence of Transformer Excitation on the Fundamental Harmonics Protection of HVDC Systems

作　　者：张建锋[1] 柏传军[1] 许训炜[1] 李海英[1] 

机构地区：[1]南京南瑞继保电气有限公司,南京211106

出　　处：《南方电网技术》2012年第6期23-26,共4页Southern Power System Technology

摘　　要：以天广直流广州换流站一次现场交流主变压器复电引起直流谐波保护动作为例,分析了交流主变压器励磁对直流输电基波保护的影响,并通过RTDS仿真分析,定量地说明了交流谐波和直流谐波之间的相互关系和影响机制。仿真结果与动作时刻现场数据的一致性说明了仿真结果是可靠的。最后给出了对该直流系统基波保护的改进意见和整定原则。Taking a harmonics protection action in Guangzhou Converter Station of Tianshengqiao-Guangdong DC transmission project during the transformer excitation as an example, this paper analyzes the influence of the AC transformer excitation on DC fundamental harmonic protection of the system, and studies quantificationally the relationship and influence mechanism between AC harmonic and DC harmonic waves with RTDS. The agreement of the simulated data with the on-site data during the action period proves the correctness of the simulation. Finally, the improvement advice and setting principle for the Fundamental harmonic protection of the HVDC system are put forward.

关 键 词：高压直流输电 变压器励磁 基波保护 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM401.2