Research on Peer to Peer Control Strategy for Microgrid Based on the Improved Power Loop

doi:10.11930/j.issn.1004-9649.201611006

Abstract

Abstract: To overcome the defect of traditional droop control method, a peer to peer control strategy for microgrid based on improved power loop is proposed. The proposed strategy can also reduce dependency of microgrid on communication system and realize plug and play for distributed generators (DG) and loads. In order to solve bus voltage amplitude and frequency deviation problem caused by traditional droop control method, a compensation unit of voltage amplitude and frequency is introduced and an improved feedback controller of power loop is established. Taken a microgrid composed by two DGs with same capacity as example, simulation results using the traditional and proposed schemes are compared and analyzed. Microgrid operation characteristics are analyzed respectively in two operation modes: grid-connected/islanding operation switching mode and load switching mode. The simulation results indicate that proposed control strategy can reduce bus voltage amplitude and frequency deviation effectively.

Key words: distributed generation, microgrid, droop control, peer to peer control, control strategy

CLC Number:

TM76

WANG Lingyun, ZHOU Xuanqing, LI Sheng, LIU Yuan. Research on Peer to Peer Control Strategy for Microgrid Based on the Improved Power Loop[J]. Electric Power, 2017, 50(9): 171-177.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201611006

https://www.electricpower.com.cn/EN/Y2017/V50/I9/171

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