Zero-Error Frequency Regulation Control Method for Microgrids Based on Consensus Algorithm

doi:10.11930/j.issn.1004-9649.201907162

Electric Power ›› 2020, Vol. 53 ›› Issue (10): 187-191.DOI: 10.11930/j.issn.1004-9649.201907162

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Zero-Error Frequency Regulation Control Method for Microgrids Based on Consensus Algorithm

WANG Yue¹, YANG Guohua^1,2, ZHUANG Jiayi¹, PAN Huan^1,2, ZOU Yuqi¹, HAN Shijun²

1. Department of Electrical Engineering and Automation, Ningxia University, Yinchuan 750021, China.;
2. Ningxia Key Laboratory of Electrical Energy Security, Yinchuan 750021, China

Received:2019-07-23 Revised:2020-03-16 Published:2020-10-05
Supported by:
This work is supported by the National Natural Science Foundation of China (Comprehensive vulnerability assessment and synchronization control of complex power grid with distributed generation, No.61763040); Key Research and Development Program of Ningxia Autonomus region (No.2018 BFH03004); Natural Science Foundation of Ningxia Autonomus region (No.NZ17022)

Abstract

Abstract: For islanded microgrids, the microgrid system frequency with traditional droop control often deviates from the rated frequency due to the variation of output power. Therefore, a self-adjusting droop coefficient control strategy for microgrids is proposed. Through the consistency algorithm, the micro-power source in the micro-grid obtains the self-adjusting amount of the droop coefficient to achieve no static difference in the frequency of the micro-grid, while ensuring that the active power shares the load according to the rated capacity. A microgrid simulation model is built in PSCAD, and the simulation result verifies the effectiveness of the control strategy through comparison with that of traditional droop control.

Key words: micro-grid, droop control, consensus algorithm, zero-error frequency regulation, power sharing

WANG Yue, YANG Guohua, ZHUANG Jiayi, PAN Huan, ZOU Yuqi, HAN Shijun. Zero-Error Frequency Regulation Control Method for Microgrids Based on Consensus Algorithm[J]. Electric Power, 2020, 53(10): 187-191.

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Zero-Error Frequency Regulation Control Method for Microgrids Based on Consensus Algorithm

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