特高压直流换流站导线融冰主接线方案  

The Main Wiring Scheme for Conductor Ice Melting of UHVDC Converter Station

作　　者：丁伟 孔志达 谌阳 DING Wei;KONG Zhida;CHEN Yang(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,Guangdong,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510663

出　　处：《南方能源建设》2024年第S01期65-73,共9页Southern Energy Construction

摘　　要：[目的]特高压换流站可采用直流运行方式融冰,但已有的融冰接线仅可用于两端直流场景,产生的融冰电流为阀组电流2倍。为了满足在多端直流场景下也能使用直流运行方式融冰以及更大线路融冰电流的需求,文章针对特高压换流站融冰主接线方案开展了设计研究。[方法]提出了多端直流的换流站融冰接线方案;创新改进了原有融冰接线中的阀组反向接线。[结果]已达到节省设备投资和占地的目的;可较已有融冰接线方案提升50%的融冰电流。[结论]文章中的换流站新型融冰接线可满足不同条件下特高压直流线路的融冰需求,有效提高直流系统运行可靠性和经济性。[Introduction]The existing main wiring scheme for ice melting at UHVDC converter stations can only be applied to twoterminal DC systems,and the ice melting current is twice the current of the valve group.The purpose of this study is to meet the needs of using the DC operation mode for ice melting and generating a larger line ice melting current in the multi-terminal DC(MTDC)scenario.This paper conducted a design study on the main wiring scheme for ice melting of the UHVDC converter station.[Method]A wiring scheme for ice melting of converter station that is applicable to MTDC was proposed.The scheme innovatively improved the reverse wiring of the valve group in the original ice-melting wiring scheme.[Result]The purpose of saving equipment investment and land occupation has been achieved.The scheme can increase the ice melting current by 50%compared to the existing ice melting wiring schemes.[Conclusion]The new ice melting wiring scheme for the converter station in this paper can effectively meet the ice-melting requirements of the UHVDC transmission line under different conditions and improve the operation economy and reliability of the transmission line.

关 键 词：特高压直流 导线融冰 多端直流 换流站主接线 运行方式融冰 三阀组并联 

分 类 号：TM7[电气工程—电力系统及自动化] F426[经济管理—产业经济]