四川电力技术
四川電力技術
사천전력기술
SICHUAN ELECTRIC POWER TECHNOLOGY
2013年
4期
80-82,91
,共4页
内桥接线%500 kV变电站%操作过电压%桥开关
內橋接線%500 kV變電站%操作過電壓%橋開關
내교접선%500 kV변전참%조작과전압%교개관
inner bridge connection%500 kV substation%switching-surge overvoltage%bridge switch
500 kV变电站采用内桥接线方式具有占地少、易操作等特点，特别针对两条出线、3台开关的情况。其优点在于线路的停、送电操作比较方便，发生故障时也不会影响其他回路的正常运行，但此时主变压器发生故障或误操作所造成的安全风险因素则相对要高得多，这就对变电站运行维护及倒闸操作的安全可靠性提出了更高的要求。以四川首座500 kV内桥接线变电站为例，详细介绍了其停送电的危险点和不同的操作方案，并对各方案进行了风险对比，其目的在于为运行人员的停送电操作提供决策，进而提高变电站内的安全操作水平。
500 kV變電站採用內橋接線方式具有佔地少、易操作等特點，特彆針對兩條齣線、3檯開關的情況。其優點在于線路的停、送電操作比較方便，髮生故障時也不會影響其他迴路的正常運行，但此時主變壓器髮生故障或誤操作所造成的安全風險因素則相對要高得多，這就對變電站運行維護及倒閘操作的安全可靠性提齣瞭更高的要求。以四川首座500 kV內橋接線變電站為例，詳細介紹瞭其停送電的危險點和不同的操作方案，併對各方案進行瞭風險對比，其目的在于為運行人員的停送電操作提供決策，進而提高變電站內的安全操作水平。
500 kV변전참채용내교접선방식구유점지소、역조작등특점，특별침대량조출선、3태개관적정황。기우점재우선로적정、송전조작비교방편，발생고장시야불회영향기타회로적정상운행，단차시주변압기발생고장혹오조작소조성적안전풍험인소칙상대요고득다，저취대변전참운행유호급도갑조작적안전가고성제출료경고적요구。이사천수좌500 kV내교접선변전참위례，상세개소료기정송전적위험점화불동적조작방안，병대각방안진행료풍험대비，기목적재우위운행인원적정송전조작제공결책，진이제고변전참내적안전조작수평。
The inner bridge connection in 500 kV substation has the features of small footprint and easy operation , especially for two outlets and three switches , which is more convenient for power supply interruption and power transmission and will not affect the normal operation of other lines .However , it will increase relatively higher safety risk factors when the main trans-former fails or malfunction happens , so the safety and reliability of operation maintenance and switching operation in substation need higher requirements .Taking the first 500 kV substation with inner bridge connection in Sichuan for example , the relative dangerous points in power supply interruption and power transmission and the different operating programs are introduced in detail, and the risks in each program are compared , which aims to provide the decision -making for operating staff in power supply interruption and power transmission so as to increase the level of safe operation in substation .
