CAJ | 학술논문

随着特高压输电技术的广泛应用，如何降低特高压工程的建设投资成本以提高特高压工程的经济性，已成为特高压技术发展面临的重要问题之一。通过对“皖电东送”同塔多回特高压工程4个变电站的雷电侵入波过电压进行计算和分析，对母线是否可以不装避雷器（MOA）的问题进行了研究。计算仿真结果表明，如果母线不安装避雷器，变电站在正常运行方式下，站内设备上最大雷电侵入波幅值为1995kV，过电压值均在允许值范围之内；而在特殊运行方式下，站内设备上最大雷电侵入波幅值为2480kV，超过了绝缘裕度允许的范围。然而，特殊的运行方式可以通过预先确立调度规程予以规避，因此可认为，“皖电东送”工程沿线的4个特高压气体绝缘变电站（GIS）母线可以不装避雷器。此措施可以使4个变电站站节省约1．2亿元（约1500万元每组）的建设投资，具有明显的经济效益。
수착특고압수전기술적엄범응용，여하강저특고압공정적건설투자성본이제고특고압공정적경제성，이성위특고압기술발전면림적중요문제지일。통과대“환전동송”동탑다회특고압공정4개변전참적뇌전침입파과전압진행계산화분석，대모선시부가이불장피뢰기（MOA）적문제진행료연구。계산방진결과표명，여과모선불안장피뢰기，변전참재정상운행방식하，참내설비상최대뇌전침입파폭치위1995kV，과전압치균재윤허치범위지내；이재특수운행방식하，참내설비상최대뇌전침입파폭치위2480kV，초과료절연유도윤허적범위。연이，특수적운행방식가이통과예선학립조도규정여이규피，인차가인위，“환전동송”공정연선적4개특고압기체절연변전참（GIS）모선가이불장피뢰기。차조시가이사4개변전참참절성약1．2억원（약1500만원매조）적건설투자，구유명현적경제효익。
Reducing the construction cost of ultra high voltage (UHV) project to improve its economy has become one of the most important problems in the development of UHV technology. We calculated and analyzed the incoming lightning surges of 4 substations of the Huainan-Shanghai UHV transmission project to study the feasibility and security of canceling the metal oxide arresters MOAs at busbar. The results show that,in the absence of MOAs , the maximum lightning incoming overvoltage at all devices is 1 995 kV under normal operation mode which is within the permitted range. However, the maximum lightning incoming overvoltage is 2 480 kV under special operation mode which exceeds the permitted range. Considering that the special operation mode, i. e. , the particular wiring configuration can be avoided by scheduling the sequence of grid-combine operations in advance, it can be concluded that the metal oxide attesters MOAs at busbar can be canceled in the 4 UHV gas insulated switchgear(GIS) substation. The cancellation is significantly economical by saving about 120 million RMB (15 million RMB per set) investments for the 4 substations of the Huainan-Shanghai transmission project in total.