分布式光伏接入对农村配电网电压的影响及电压越限解决方案

张策; 刘莉

doi:10.16513/j.cnki.10-1427/tk.2018.06.002

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分布式能源 ›› 2018, Vol. 3 ›› Issue (6) : 13-19. DOI: 10.16513/j.cnki.10-1427/tk.2018.06.002

有源配电网运行分析与控制

分布式光伏接入对农村配电网电压的影响及电压越限解决方案

张策 ¹ ,
刘莉 ²

作者信息 +

Influence of Distributed Photovoltaic Access to Rural Distribution Network on Voltage and Solution of Voltage Over-Limitation

Ce ZHANG ¹ ,
Li LIU ²

Author information +

文章历史 +

摘要

针对大规模分布式光伏电源接入配电网可能造成线路过载、谐波污染及电压越限等问题，研究了不同渗透率的分布式光伏电源接入对典型农村配电网电压的影响。利用ETAP仿真软件搭建含分布式光伏电源的农村配电网模型，对晴天不同时刻含光伏的配网进行潮流仿真，分析不同光伏出力对农村配电网电压造成的影响。针对电压越限问题，提出一种基于中枢点的调压措施，即在配电网中枢点投入电抗器，当母线电压发生越限时，通过调节电抗器吸收电网过剩的无功，从而降低母线电压。最后，通过仿真算例验证了该方法的有效性。

Abstract

When a large-scale distributed photovoltaic power supply is connected to a distribution network, it may cause line overload, harmonic pollution, and voltage over-limitation. This paper mainly studies the influence of different penetration rate of distributed photovoltaic power supply on the voltage of typical rural distribution network, builds a rural distribution network model with distributed photovoltaic power supply by ETAP simulation software, simulates the power flow of the distribution network with photovoltaic power supply at different times in sunny days, and analyzes the influence of different photovoltaic power supply access on the voltage of rural distribution network at different times. In order to solve the problem of voltage beyond limits, this paper proposes a voltage regulation measure based on the central point, which is putting reactors in the central point of the distribution network, absorbing the excess reactive power of the grid by adjusting reactors when the bus voltage exceeds the limit, thus reducing the bus voltage. Finally, the effectiveness of this method is verified by a simulation example.

导出引用

张策, 刘莉. 分布式光伏接入对农村配电网电压的影响及电压越限解决方案[J]. 分布式能源. 2018, 3(6): 13-19 https://doi.org/10.16513/j.cnki.10-1427/tk.2018.06.002

Ce ZHANG, Li LIU. Influence of Distributed Photovoltaic Access to Rural Distribution Network on Voltage and Solution of Voltage Over-Limitation[J]. Distributed Energy Resources. 2018, 3(6): 13-19 https://doi.org/10.16513/j.cnki.10-1427/tk.2018.06.002

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