CAJ | 학술논문

牵引变电所在电网中往往处于供电终端,其接线方式、负荷特点、运行条件等与电力系统变电站有所不同。作为电力系统中具有自身特点的供电设施,对其过电压和防护措施进行分析和思考是非常有意义的。文章对牵引变电所内雷过电压、工频过电压、操作过电压、谐振过电压等各种过电压及其防护措施进行了阐述和分析,对牵引变电所牵引变压器高低压侧避雷器耐雷水平不一致,27．5 kV馈线侧没有设置进线段保护,高压侧进线避雷器设置位置,27．5 kV电压互感器形式结构等存在的问题提出了自己的认识,并提出了建议改进方案和措施。
견인변전소재전망중왕왕처우공전종단,기접선방식、부하특점、운행조건등여전력계통변전참유소불동。작위전력계통중구유자신특점적공전설시,대기과전압화방호조시진행분석화사고시비상유의의적。문장대견인변전소내뢰과전압、공빈과전압、조작과전압、해진과전압등각충과전압급기방호조시진행료천술화분석,대견인변전소견인변압기고저압측피뢰기내뢰수평불일치,27．5 kV궤선측몰유설치진선단보호,고압측진선피뢰기설치위치,27．5 kV전압호감기형식결구등존재적문제제출료자기적인식,병제출료건의개진방안화조시。
As a special power supply facility in power system, the traction substation is usually at the terminal position of the power grid, its main line connection model, load characteristics and operation condition are different from substation of the power grid, therefore, it means a great deal to analyze and consider the overvoltage occurred and overvoltage pro-tection measures adopted in traction substation. The paper explains and analyzes the diverse overvoltages such as thunder overvoltage, power frequency overvoltage, switching overvoltage, resonance overvoltage and overvoltage-protection meas-ures occurred and adopted in traction substation. At last, the paper offers solutions and advices on the existing problems including the different lightning withstand levels of lightning arrester on high and low pressure sides of traction transform-er in traction substation, there is no lead-in protection on 27. 5 kV feeder side, the position of lightning arrester on high voltage side, the form and structure of 27. 5 kV voltage and transformer and so on.