Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (9): 38-43.doi: 10.16180/j.cnki.issn1007-7820.2020.09.007

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Reactive Power Control and Delay Algorithm in Microgrid Based on Consistency Algorithm

ZHU Yanxiang,LONG Yingwen   

  1. School of Electrical and Electronic Engineering,Shanghai University of Engineering and Technology,Shanghai 201600,China
  • Received:2019-06-27 Online:2020-09-15 Published:2020-09-12
  • Supported by:
    National Science and Technology Support Program(2015BAF10B01)


In view of at the problems of reactive power distribution and communication delay in isolated island microgrid, a hierarchical control algorithm based on consistency algorithm is proposed in this paper. Each distributed power supply exchangs voltage information with the neighboring distributed generation supply under the clock cycle, and obtains the average voltage value of the whole network through the local voltage consistency algorithm, which updates the voltage state value with the iteration cycle, and realizes the accurate distribution of reactive power of each distributed generation supply. In the voltage consistency algorithm, the communication delay between local nodes and adjacent nodes is saved. The maximum communication delay time between adjacent nodes can be obtained by the topology structure of the micro-grid system, and the delay error is dynamically compensated by the PI algorithm. The island microgrid simulation model is established on MATLAB/Simulink platform, and the experimental results verifies the effectiveness of the control strategy.

Key words: microgrid, hierarchical control, consistency algorithm, average network voltage, reactive power, communication delay

CLC Number: 

  • TN9