摘要
为进一步提升智能电网建设效果,保障电网的智能化运行,对500 kV GIS交流耐压试验在智能电网建设中的应用进行研究。准确设定GIS设备各项参数,以避免损坏贵重设备。计算主回路电容量、等值电阻等参数,运用较优方式对设备进行选择与接线,即先进行预备试验,操作隔离开关及断路器,操作完成后进行耐压试验并统计所有试验数据。试验结果表明,在接近耐压值时,5个小组将直流试验电压均匀升至6 kV。在充电电流较为平稳时,能更准确地控制试验电压至目标值;震荡周期在0.51 s内,电流值趋近于零,震荡幅值较小,并未观察到明显的反击过电压现象。这表明500 kV GIS交流耐压试验能有效检查设备的绝缘性能,确保设备在投运前处于良好的工作状态。通过交流耐压试验,可及时发现设备在运行过程中可能出现的耐压局放问题,应用效果良好。
In order to further promote smart grid construction and ensure the intellectualized operation of electric grids,the practical application of 500 kV GIS AC voltage tolerance test in smart grid construction was explored.The practice entailed first accurate determination of GIS equipment parameters to avoid damage,second calculation of parameters such as main circuit capacitance,equivalent resistance,etc.,for the selection of equipment and optimal wiring method,and third,the preliminary test operating the isolation switch and circuit breaker and the following voltage tolerance test for data collection.The test results showed that when approaching the voltage threshold,the five groups uniformly raised the DC test voltage to 6 kV.When the charging current was relatively stable,it could more accurately control the test voltage to the target value.The oscillation period was within 0.51 s,and the current value approached 0.The oscillation amplitude was small,and there observed no obvious rebound overvoltage phenomenon.This indicated that the 500 kV GIS AC voltage tolerance test can effectively examine the insulation performance of the equipment which ensures standard-qualified working condition of the equipment before initial operation,and promptly detect potential voltage partial discharge problems.
作者
李汶蒿
LI Wenhao(Sichuan Shuneng Electric Energy Technology Co.,Ltd.,Chengdu 610000,China)
出处
《电工技术》
2024年第19期159-161,共3页
Electric Engineering
作者简介
李汶蒿(1989—),研究方向为电力工程技术。
