Research on hangzhou 10 kV distribution network closing loop operation

For the difference of bus voltage,the closing loop operation of distribution network will generate large loop current and impact current,which would affects the safety.A model of hangzhou(local) distribution network was set up to analyze closing loop operation,by using of simulation software PSCAD/EMTDC.The system status was simulated by model after closing loop operation,the suggestion weather closing loop or not according to the loop current were given.Also,some measures were put forward to reduce the loop current according to simulation,which should give reference to the closing loop operation.