LOW VOLTAGE APPARATUS ›› 2020, Vol. 0 ›› Issue (10): 27-35.doi: 10.16628/j.cnki.2095-8188.2020.10.005

• Research & Analysis • Previous Articles     Next Articles

Research on Grid Loop Closing Techniques Based on Battery Energy Storage Systems

SHAO Yunfeng1, LIU Yongqiang1, MA Zhongjing2, GAO Zhigang2   

  1. 1. Luliang Power Supply Company,State Grid Shanxi Electric Power Company,Luliang 033000,China
    2. School of Automation,Beijing Institute of Technology,Beijing 100081,China
  • Received:2020-06-11 Online:2020-10-30 Published:2020-11-24

Abstract:

Grid loop closing operations are widely used in power systems,which can make it possible to do the power-grid maintenances and optimize the power system.However,the phases,frequencies and magnitudes of different power lines are not the same.As a result,the grid loop closing operation might cause accidents such as over current, which can lower the reliability of the system and deteriorate the stability.Moreover,in some cases,the grid loop closing operation is not reasonable because the voltages vary too much,which will lead to a power failure inevitably.In order to make the grid loop closing operation successful and improve the quality of the power supply,this paper proposed a topology based on the battery energy storage systems,which can provide power to the loads in the transient state.The model of the topology was established and the working schemes were analyzed.A control strategy in different stages was formed.The simulation results validate the proposed topology and schemes.

Key words: pulse width modulation (PWM), grid loop closing, energy storage, battery, converter

CLC Number: