10 kV线路带角差不停电合环调电研究

Research on Power Adjustment of 10 kV Transmission Line with Angle Difference without Power Cut and Loop Connection

10 kV线路存在30°相角差,如直接合环,将在两线之间形成较大合环电流,造成上级电源跳闸,引发大范围停电。以往一直采用停电倒负荷再送电的模式,严重影响供电可靠性。现通过准确计算合环电流,合理整定开关保护定值,各级保护相互配合,利用保护跳闸成功实现不停电合环调电。降低用户停电感知,提升“获得电力”满意度。

There is a 30°phase difference in the 10 kV line.If the loop is directly closed,a large loop current will be formed between the two wires.Causing a tripping of the superior power supply,leading to a widespread power outage.In the past,the mode of power outage,load reversal,and power transmission has been adopted.Serious impact on power supply reliability.Now,by accurately calculating the closing current.Reasonably set the switch protection settings.All levels of protection cooperate with each other.Successfully achieved non power outage,loop closing,and power regulation through protection tripping.Reduce user perception of power outages and improve satisfaction with'obtaining electricity'.