摘要
国家“碳达峰、碳中和”目标提出后,作为能源系统去碳化和实现零排放的关键方式,海上风电的地位日趋重要。柔性直流输电由于不存在长距离输电的充电功率问题、能够灵活控制功率、可实现动态无功支撑等技术优势。直流GIS无间隙金属氧化物罐式避雷器(简称直流GIS避雷器)具有极其优异的非线性特性,在正常工作电压作用下,其阻值很大,通过的漏电流很小,而在过电压作用下,阻值急剧变小,是保护GIS设备免受过电压损害的重要保护设备,对降低开关设备的绝缘水平和提高电力系统的安全稳定性有着重要的作用。为满足海上风电±200kV、±320kV工程的需求,研究设计了±200kV、±320kVGIS避雷器,对避雷器电阻片配置、内部屏蔽罩电场强度、壳体耐受压力进行了研究,并成功制造了样机。通过验证试验,研制的直流GIS避雷器性能满足工程需要,样机适合投入工程使用。
After the national"carbon peak,carbon neutral"goal was proposed,as a key way to decarbonize the energy system and achieve zero emissions,the position of offshore wind power is becoming increasingly important.Flexible HVDC has the advantages of no charge power problem for long distance transmission,flexible power control and dynamic reactive power support.DC gapless metal oxide GIS tank arrester(referred to as DC GIS arrester)has excellent nonlinear characteristics,under the action of normal operating voltage,its resistance value is high and the leakage current passing through is very small.However,under overvoltage,the resistance value becomes sharply smaller,which is an important protection equipment to protect GIS from overvoltage damage.It plays an important role in reducing the insulation level of quick-closing equipment and improving the safety and stability of power system.In order to meet the needs of offshore wind power projects of±200 kV and±320 kV,the design of±200 kV and±320 kV GIS arrester was studied,the configuration of the arrester resistor,the electric field strength of the internal shield and the pressure of the shell were studied,and the prototype was successfully manufactured.Through the verification test,the performance of the developed DC GIS arrester meets the engineering needs,and the prototype is suitable for engineering use.
作者
张彦杰
刘威
刘凯
李石磊
白立杰
郎小华
李宝兵
梁钟礼
姜凯煦
ZHANG Yanjie;LIU Wei;LIU Kai;LI Shilei;BAI Lijie;LANG Xiaohua;LI Baobing;LIANG Zhongli;JIANG Kaixu(PG Toshiba(LangFang)Arrester Co.,Ltd.,Langfang 065001,China)
出处
《电瓷避雷器》
2025年第4期49-58,64,共11页
Insulators and Surge Arresters
