分布式光伏对智能配网馈线电压影响灵敏度研究

doi:10.11930/j.issn.1004-9649.2016.11.088.06

摘要/Abstract

摘要： 以配网馈线为研究对象,提出没有光伏和有光伏接入下的馈线节点电压变化灵敏度矩阵,指出不同节点处的功率变化与电压变化之间的关系;并对长距离有分支的辐射型馈线进行仿真,验证灵敏度矩阵的有效性和正确性。灵敏度矩阵可以用来分析分布式光伏接入馈线引起的节点电压变化,特别对于偏远地区供电半径较大的长距离馈线,提前预判馈线节点电压的越限可能性。同样,灵敏度矩阵可以延伸到更多馈线形成的配电网络节点电压的分析、无功补偿和分布式光伏的布点规划,可以作为研究配网功率置信区间判据,判别电压波动裕度,以此作为配网馈线自动化和配网自愈的负荷转移的判据,提高配网电压质量和供电可靠性。

关键词: 分布式电源, 配网馈线, 光伏, 灵敏度, 电压波动

Abstract: Based on the distribution networking feeder, the sensitivity matrices of voltage fluctuation in distribution feeder are propposed with and without PV integration, and the relationship between vlotage and load of different nodes is established. In the same time, the validity and the correctness of the sensitivity matrix is verified through simulation on the long-distance radiant multi-branch distribution feeders. The sensitivity matrix can be used to analyze the node voltage changes caused by integration of the distributed PVs, and it is also very helpful for the long distance feeders in remote areas in predicting the possibility of beyond-limit voltage. Similarly, the sensitivity matrix can be extended to the analysis of the node voltage of distribution network with multible feeders, reactive compensation and planning of distributed PVs. And it can also be used to study the distribution network power confidence interval criterion for judging the voltage fluctuation margin, which can be used as the criterion for distribution network feeder automation and distribution network self-healing load transfer as to improve the voltage quality and power supply reliability of the distribution network.

Key words: distributed generation, distribution network feeder, photovoltaic generation, sensitivity, voltage fluctuation

中图分类号:

TM615

李卫良, 刘蓉晖. 分布式光伏对智能配网馈线电压影响灵敏度研究[J]. 中国电力, 2016, 49(11): 88-93.

LI Weiliang, LIU Ronghui. Study on the Impact of PV Generation on Voltage Sensetivity of Smart Distribution Network Feeder[J]. Electric Power, 2016, 49(11): 88-93.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.11.088.06

https://www.electricpower.com.cn/CN/Y2016/V49/I11/88

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