| 分布式光伏发电系统改进虚拟同步发电机控制 |
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| 引用本文： | 高长伟,刘晓明,孟昭军.分布式光伏发电系统改进虚拟同步发电机控制[J].太阳能学报,2021(2):376-382. |
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| 作者姓名： | 高长伟 刘晓明 孟昭军 |
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| 作者单位： | 辽宁科技学院电气与信息工程学院;沈阳工业大学电气工程学院;天津工业大学电工电能新技术天津市重点实验室 |
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| 基金项目： | 中央引导地方科技发展专项(20ZYJDJC00060);河北省自然科学基金重点项目(E2020202086);辽宁省自然科学基金(20180550138);辽宁省教育厅科学技术研究项目(网络化系统滤波融合及控制器设计研究)。 |
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| 摘 要： | 提出一种计及分布式光伏发电系统源端输出功率波动特征的改进虚拟同步发电机(IVSG)控制策略。对单台虚拟同步发电机功率平衡方程特征值进行分析,明确了光伏电源的基本运行特性,确定了光伏电源稳定运行区域。在传统虚拟同步发电机(VSG)的基础之上进一步采用了直流电压稳定控制技术,提出改进的虚拟同步发电机控制策略。当光伏电源输出功率低于负载需求时起到抑制直流母线电压跌落、维持直流电压稳定的作用,实现按照负荷或并网功率需求进行功率匹配的目的。仿真与实验结果验证了所提控制策略的可行性与有效性。
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| 关 键 词： | 光伏电源 功率波动 改进虚拟同步发电机 直流电压稳定 功率匹配 |
IMPROVED VIRTUAL SYNCHRONOUS GENERATOR CONTROL STRATEGY FOR DISTRIBUTED PHOTOVOLTAIC POWER SYSTEM |
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| Gao Changwei,Liu Xiaoming,Meng Zhaojun.IMPROVED VIRTUAL SYNCHRONOUS GENERATOR CONTROL STRATEGY FOR DISTRIBUTED PHOTOVOLTAIC POWER SYSTEM[J].Acta Energiae Solaris Sinica,2021(2):376-382. |
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| Authors: | Gao Changwei Liu Xiaoming Meng Zhaojun |
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| Affiliation: | (College of Electrical and Information Engineering,Liaoning Institute of Since and Technology,Benxi 117004,China;School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;Key Laboratory of Advanced Electrical Engineering and Energy Technology,Tianjin Polytechnic University,Tianjin 300387,China) |
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| Abstract: | Considering the power fluctuation characteristics of primary source,an improved virtual synchronous generator(IVSG)control strategy for distributed photovoltaic(PV)power system is proposed.The eigenvalue of power balance equation of single virtual synchronous generator is analyzed,the basic operation characteristic of PV power supply and its stable operation region are obtained.Based on the traditional virtual synchronous generator(VSG),DC voltage stability control technology is further adopted,and IVSG control strategy is proposed.When the output power of PV source is lower than that of the the load demand,it can restrain DC bus voltage drop and maintain DC voltage stabilization.The purpose of power matching according to load or grid power demand is realized.Simulation and experimental results demonstrate the feasibility and effectiveness of the proposed control strategy. |
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| Keywords: | solar power generation power fluctuation improved virtual synchronous generators DC voltage stability power matching |
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