10kV Distribution Network Simulation System Establishment And Performance Evaluation

In recent years,the state invest in the distribution network to increase efforts to improve the distribution network automation coverage,which improve the quality of residents has a far-reaching impact.The core of distribution automation is to quickly detect the fault features in the event of a fault in the distribution network,locate the fault,and then diagnose and isolate the faulty area in time to automatically restore the normal power supply to the non-faulty part,thus providing the users with safe and reliable of the power supply quality.But because of the domestic distribution network automatic equipment testing platform less,resulting in distribution network automation equipment function and performance of large differences,the safe and stable operation of the distribution network has a great hidden dangers.This paper introduces the development of distribution automation at home and abroad,compares the main detection methods of domestic distribution automation equipment,analyzes the advantages and disadvantages of each testing platform.In order to solve the current lack of reliable detection methods and test platform issues based on distribution network automation equipment,it is necessary to utilize the equipment which has actual power network parameters to build power distribution system model.Taking into account the physical test platform,such as the shortcomings of poor scalability,the test platform can use dynamic digital simulation system to build model of power distribution system,greatly increasing the flexibility of the test platform.Test platform utilizes physical and Digital Dynamic Real-time Simulation system(DDRTS)to analog various transmission situations of distribution network and the adding interference signal,to test distribution automation equipment performance.Meanwhile,in order to test the reasonable of building test platform,the platform simulates various operation modes of the power grid and analyzes the characteristics of the simulated grid operation.Besides the paper compare and analysis the difference between measured test data and MATLAB built model output data,then get the verification of scientific system.The experiment shows that: the built platform can simulate flexibly various operating states,providing good testing environment for distribution automation equipment,so it has promoted value.