高压直流输电工程共用接地极运行风险及防范措施工程应用  

Risk and Preventive Measures of Common Ground Electrode in HVDC Project And Engi-neering Application

作　　者：刘茂涛[1] 严海健 徐攀腾[1] 朱博[1] 李果明[1] 龙建华 Liu Maotao;Yan Haijian;Xu Panteng;Zhu Bo;Li Guoming;Long Jianhua(GZ Bureau,EHV Power Transmission Company,CSG,Guangzhou 510663,China)

机构地区：[1]中国南方电网超高压输电公司广州局,广东广州510663

出　　处：《科学技术创新》2022年第36期173-176,共4页Scientific and Technological Innovation

摘　　要：共用接地极节约占地和投资,广泛应用于国内高压直流输电系统,但是共用接地极的各回直流输电系统在特定运行方式下互相影响。结合南方电网多个直流输电工程,定量计算通过共用接地极流入另一回直流输电系统的电流,明确可能对系统运行、设备运维、人身安全带来的风险,对已投运工程及新改建工程提出风险防范措施并在实际工程得以应用,保证了电网、设备、人身安全,对后续共用接地极设计和运维具有指导意义。Common ground electrode which saves land and investment, is widely applied to the HVDC Project. However, the HVDC transmis-sion systems with common ground electrode interact with each other under specific operation mode. Base on the Southern Power Grid DC transmission projects, this paper quantitative caiculate the current generated by the common ground electrode into another HVDC system, to determine the possible risk of system operation, equipment maintenance, personal safety.Risk prevention measuresand is giv-en to ensure the power grid and equipment and the personal safety for the project has been put into operation and reconstruction,which also has been applied in actual engineering and guiding significance for the follow common ground electrode HVDC Project.

关 键 词：高压直流输电 共用接地极 运行风险 防范措施 

分 类 号：TM862[电气工程—高电压与绝缘技术]