摘要
多端直流输电技术可有效缓解中国输电走廊紧缺问题,并解决大规模的清洁能源并网,通过配置直流高速开关(high-speed switch,HSS),可实现多端直流系统第三站的在线投退及直流线路故障快速隔离。但目前国内缺乏±800 kV HSS设备的制造技术与试验经验。为掌握核心技术,文中首先简要介绍多端直流输电工程对HSS的功能需求,提出HSS的运行工况及关键技术参数。其次,着重介绍研制±800 kV HSS特殊性能验证试验,包括长时燃弧耐受关键技术及无震荡回路开断直流关键技术及其研究现状,提出了±800 k V HSS关键性能的考核方法和型式试验要求,并对其下一步的研究方向给出了建议。
Multi terminal DC transmission technology can not only solve the shortage of transmission corridors in China,but also solve the large-scale renewable energy grid connection.The configuration of DC parallel high-speed switch(HSS)can realize the on-line switching-on and switching-off and fast fault isolation of the third station of multi terminal DC system.However,the manufacturing technology and test experience of ±800 kV HSS equipment is lacked in China at present and the equipemnt still relies on imports.In order to master the core technology,the functional requirements of multi terminal HV DC transmission project to HSS is mainly introduced firstly in this paper,and the operating conditions and key technical parameters of HSS are propsoed.Secondly,the special performance verification test of ±800 kV HSS,including the key technologies of long-term arcing withstand,non-oscillation-circuit breaking DC and their research status,is introduced.The assessment methods and type test requirements of the key performance of ±800 kV HSS are proposed and the subsequent research direction is given.
作者
吕金壮
张长虹
杨旭
李明洋
陈兵
黎卫国
李士杰
张良
LYU Jinzhuang;ZHANG Changhong;YANG Xu;LI Mingyang;CHEN Bing;LI Weiguo;LI Shijie;ZHANG Liang(EHV Power Transmission Company China Southern Power Grid,Guangzhou 510663,China;Maintenance&Test Center of EHV Power Transmission Company China Southern Power Grid,Guangzhou 510663,China)
出处
《高压电器》
CAS
CSCD
北大核心
2023年第5期1-10,18,共11页
High Voltage Apparatus
基金
国家自然科学基金资助项目(51825702)
中国南方电网有限责任公司重大攻关项目(CGYKJXM20200356)。
关键词
多端混合直流输电
直流并联高速开关
长时燃弧耐受
直流开断特性
multi terminal hybrid DC transmission
DC parallel high⁃speed switch
long term arcing withstand
DC breaking characteristics
