| 虚拟同步发电机的转子惯量自适应控制方法 |
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| 引用本文： | 程冲,杨欢,曾正,汤胜清,赵荣祥. 虚拟同步发电机的转子惯量自适应控制方法[J]. 电力系统自动化, 2015, 39(19): 82-89 |
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| 作者姓名： | 程冲 杨欢 曾正 汤胜清 赵荣祥 |
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| 作者单位： | 浙江大学电气工程学院, 浙江省杭州市 310027,浙江大学电气工程学院, 浙江省杭州市 310027,输配电装备及系统安全与新技术国家重点实验室(重庆大学), 重庆市 400044,浙江大学电气工程学院, 浙江省杭州市 310027,浙江大学电气工程学院, 浙江省杭州市 310027 |
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| 基金项目： | 国家高技术研究发展计划（863计划）资助项目（2011AA050204）;国家自然科学基金资助项目（50907060） |
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| 摘 要： | 近年来,微电网作为一种可再生能源接入电网的有效载体,已受到越来越多的关注。微电网中的分布式电源大多需要通过逆变器实现并网和输出电能,然而传统的逆变器控制算法只考虑快速响应,并没有类似同步发电机的惯性特征,因而对电网冲击较大。针对该问题,在总结了虚拟同步发电机(VSG)支撑微电网稳定运行控制策略的基础上,结合同步发电机的功角曲线和转子惯量的物理意义,提出了一种自适应虚拟转子惯量的VSG控制算法,并通过对分布式电源小信号模型的分析,确定了自适应惯量系数的选取原则。最后,利用PSCAD/EMTDC仿真工具,分别在并网和离网运行模式下验证了所提算法的有效性。
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| 关 键 词： | 虚拟同步发电机 转子惯量 自适应算法 功角曲线 小信号模型 |
| 收稿时间： | 2014-11-30 |
| 修稿时间： | 2015-07-24 |
Rotor Inertia Adaptive Control Method of VSG |
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| CHENG Chong,YANG Huan,ZENG Zheng,TANG Shengqing and ZHAO Rongxiang. Rotor Inertia Adaptive Control Method of VSG[J]. Automation of Electric Power Systems, 2015, 39(19): 82-89 |
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| Authors: | CHENG Chong YANG Huan ZENG Zheng TANG Shengqing ZHAO Rongxiang |
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| Affiliation: | College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China,College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China,State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China,College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China and College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | As an effective interface for renewable energy integration, microgrids have attracted more and more attention. Most of the distributed energy sources in the microgrid should be grid-connected by inverters, but unlike synchronous generators, traditional inverter control algorithms only consider the rapid response with no inertia. In order to solve this problem, the virtual synchronous generator (VSG) control strategy in support of the stable operation of microgrids is summarized. Then the VSG control algorithm of adaptive virtual rotor inertia is proposed by referring to the physical meaning of the synchronous generator rotor inertia and power angle curve. Following an analysis on the small-signal model for the VSG-oriented distributed generator, the selection principle of adaptive inertia coefficients is presented. Finally, the proposed algorithm is verified by simulation results based on a PSCAD/EMTDC microgrid model. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2011AA050204) and National Natural Science Foundation of China (No. 50907060). |
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| Keywords: | virtual synchronous generator rotor inertia adaptive algorithm power angle curve small-signal model |
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