±800kV锡盟—泰州特高压直流输电工程交流侧暂态过电压  

AC-Side Transient Overvoltage in ± 800 kV Ximeng-Taizhou UHVDC Transmission Project

作　　者：李高望[1] 李亚男[1] 邹欣[1] 

机构地区：[1]国网北京经济技术研究院,北京市102209

出　　处：《电力建设》2015年第9期57-61,共5页Electric Power Construction

基　　金：国家电网公司科技项目(SGCC[2012]515)

摘　　要：换流站交流侧暂态过电压水平直接关系到换流站设备的绝缘配合和运行安全。该文分析了换流站交流侧暂态过电压的机理以及影响过电压的因素,并依托锡盟—泰州±800 kV特高压直流输电工程,建立了EMTDC电磁暂态仿真模型,对该工程送、受端换流站交流侧的暂态过电压水平进行分析计算。结果表明,送受端500 kV交流母线若采用额定电压为396 kV的避雷器,保护水平可取761 kV,若采用额定电压为420 kV的避雷器,保护水平取858 kV。受端1 000 kV交流母线采用额定电压为828 kV避雷器,保护水平取1 460 kV。计算结果可为工程后续研究和建设提供技术参考。The AC-side transient overvoltage level of converter station directly affects the insulation coordination and operation safety of the equipments in converter station. The mechanism and influence factors of the AC-side transient overvoltage of converter station were analyzed. The EMTDC electromagnetic transient simulation model was established based on Ximeng-Taizhou ± 800 kV UHVDC transmission project, and the AC-side transient overvoltage level of converter stations in transmitter/receiver system of this project were calculated. The results show that the switching impulse protective level can be set to 761 kV if the 500 kV AC bus in transmitter/receiver system uses the arrester with 396 kV rated voltage; the switching impulse protective level can be set to 858 kV if the rated voltage of attester is 420 kV; and the switching impulse protective level can be set to 1460 kV if the 1 000 kV AC bus in receiver system uses the arrester with 828 kV rated voltage. The calculation results can provide technical reference for subsequent research and construction.

关 键 词：特高压直流输电 暂态过电压 避雷器 

分 类 号：TM864[电气工程—高电压与绝缘技术]