虚拟同步发电机及其在多能互补微电网中的运行控制策略

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摘要针对西藏措勤县微网示范电站具有光伏、风电以及水电等在内的多能互补微网特性,研究并提出可以灵活实现微网组网的虚拟同步发电机（VSG）控制策略,讨论了多能互补微网系统各单元的组成及其控制,阐述了VSG的原理与系统建模,研究并分析了系统运行中光电站独立供电模式、光伏电站与水电站联合供电模式以及两种模式间的无缝切换策略,通过该微网的运行考核验证了所提控制策略的可行性与有效性。结果表明,所提的VSG控制策略具有较好的有功、无功均分性能;同时,还能很好地为系统提供惯性和阻尼,提升微网的供电质量与稳定运行能力;此外,还能满足微网不同运行模式之间的无缝切换。

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	石荣亮
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关键词 ：多能互补微网, 虚拟同步发电机, 光电站, 水电站, 无缝切换

Abstract：The multi-energy complementary microgrid demonstration power plant of Tibet Couqin county including photovoltaic, wind farm and hydropower was comprehensively investigated in this paper. Firstly, virtual synchronous generator (VSG) control strategy for the flexible configuration of microgrid was proposed. Besides, the component of the multi-energy complementary microgrid and its control were discussed. Also, the principle and mathmatical model of the VSG were described. Additionally, the control function of VSG in the photovoltaic station standalone and parallel with hydropower station operation modes, as well as during the seamless transfer between two modes was analyzed. Finally, operational results of the microgrid were utilized to confirm the feasibility and effectiveness of the proposed control strategies. The experimental results demonstrate that the presented control strategy can not only perform good active and reactive sharing features, but also can provide significant inertia and damping for the microgrid to improve its power quality and stability. Furthermore, seamless transfer between different operation modes can be also ensured to satisfy the requirements of microgrid.

Key words： Multi-energy complementary microgrid virtual synchronous generator photovoltaic station hydropower station seamless transfer

收稿日期: 2015-10-18 出版日期: 2016-11-01

PACS:

TM464

基金资助:国家重点研发计划（2016YFB0900300）和国家自然科学基金（51677049）资助项目

作者简介: 石荣亮男,1987年生,博士研究生,研究方向为新能源利用与分布式发电技术。E-mail: shirl163@.com（通信作者）张兴男,1963年生,教授,博士生导师,研究方向为特种电源、大功率风力发电用变流器及大型光伏并网发电。E-mail: longlf@ustc.edu.cn

引用本文:

石荣亮, 张兴, 刘芳, 徐海珍, 余勇. 虚拟同步发电机及其在多能互补微电网中的运行控制策略[J]. 电工技术学报, 2016, 31(20): 170-180. Shi Rongliang, Zhang Xing, Liu Fang, Xu Haizhen, Yu Yong. Control Technologies of Multi-Energy Complementary Microgrid Operation Based on Virtual Synchronous Generator. Transactions of China Electrotechnical Society, 2016, 31(20): 170-180.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I20/170

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