CAJ | 학술논문

特高压半波长交流输电线路送端和受端电压相差不大,沿线电压分布比较均匀,理论上是较理想又经济的长距离大容量输电方式。要实现特高压半波长交流输电,需要解决许多关键技术问题,如抑制工频过电压、操作过电压、不对称接地故障过电压以及解决潜供电流大和恢复电压高等问题。为此,建立了特高压半波长输电系统研究模型,进行了基于单一电厂通过特高压半波长输电线路向大系统送电方式下的电磁暂态仿真。仿真结果表明半波长线路沿线每100km需安装3组避雷器、全线分段安装7组高速接地开关（HSGS）或采用三相重合闸能有效抑制工频过电压、操作过电压和潜供电流。
특고압반파장교류수전선로송단화수단전압상차불대,연선전압분포비교균균,이론상시교이상우경제적장거리대용량수전방식。요실현특고압반파장교류수전,수요해결허다관건기술문제,여억제공빈과전압、조작과전압、불대칭접지고장과전압이급해결잠공전류대화회복전압고등문제。위차,건립료특고압반파장수전계통연구모형,진행료기우단일전엄통과특고압반파장수전선로향대계통송전방식하적전자잠태방진。방진결과표명반파장선로연선매100km수안장3조피뢰기、전선분단안장7조고속접지개관（HSGS）혹채용삼상중합갑능유효억제공빈과전압、조작과전압화잠공전류。
Many critical technological problems need to solve in UHV half wavelength AC transmission, for example, the power frequency overvoltage, switching overvoltage, and overvoltage of single-phase reclosing should be restricted; and the problems of recovery overvoltage and second arc overcurrent should be solved. Consequently, we established a model of UHV half wavelength AC transmission system, and simulated the electromagnetic transient when single powere station transmited to big system through UHV hal{ wavelength AC transmission line. The simulation results indicate that measures such as installing 3 groups of arresters per each 100 km, adopting 7 groups of HSGS on the whole line, and adopting three-phase reclosing can usefully restrict power frequency overvoltage, switching overvoltage, and second arc current.