光伏发电并网系统的仿真建模及对配电网电压稳定性影响

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摘要为掌握光伏发电并网对电压稳定性的影响, 首先基于广义负载概念建立光伏发电并网系统（PVGS）统一电路模型, 并利用该模型研究了电压稳定性。研究表明广义负载功率波动、功率因数、接入配电网电压等级对电压波动影响较大, 提高并稳定并网点功率因数是提高电压稳定性的根本方法。最后对某公司500kWp光伏发电并网系统测试分析, 证明了上述结论。

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	陈权
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	叶金根
	曾野

关键词 ：配电网, 光伏发电, 广义负载, 电路模型, 电压稳定性

Abstract：In order to gain an understanding of the effects the photovoltaic(PV) generation might have upon the voltage stability in distribution grid, a general PV grid-connected power generation system(PVGS) circuit model based generalized load is built in this paper, and is applied to study the voltage stability. The simulation results show that voltage fluctuation is deeply affected by the fluctuation power, the power factor and the voltage levels of distribution grid. The basic approach to improve voltage stability is to increase and stable power factor. Finally, some simulation conclusions are showed by analysis of the data measured in a company 500kWp PV grid-connected system.

Key words： Distribution grid photovoltaic generation generalized load circuit model voltage stability

收稿日期: 2010-09-06 出版日期: 2014-03-25

PACS:

TM712

作者简介: 陈权男, 1975年生, 博士研究生, 副教授, 现主要从事电能质量治理及新能源利用方面研究。李令冬男, 1942年生, 学士, 教授, 主要从事工业节电与配电网电能质量控制方面研究。

引用本文:

陈权, 李令冬, 王群京, 段晓波, 叶金根, 曾野. 光伏发电并网系统的仿真建模及对配电网电压稳定性影响[J]. 电工技术学报, 2013, 28(3): 241-247. Chen Quan, Li Lingdong, Wang Qunjing, Duan Xiaobo, Ye Jingen, Zeng Ye. Simulation Model of Photovoltaic Generation Grid-Connected System and Its Impacts on Voltage Stability in Distribution Grid. Transactions of China Electrotechnical Society, 2013, 28(3): 241-247.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I3/241

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