摘要
分布式电源(distributed generation,DG)接入配电网对系统电压稳定性有较大影响,其影响机制值得深入研究。推导电压稳定H指标,并结合L指标深入分析DG接入对系统电压稳定的影响机制,并给出提高电压稳定性的措施。由分析可知:线路流过的功率、电压降落纵分量均与电压稳定性呈正相关,合理调节DG功率因数可有效提高配电网电压稳定性。IEEE 33节点配电网系统算例验证了所得结论的有效性。
The distributed generation(DG)access in distribution network has a great influence on the voltage stability of the distribution system,whose influence mechanism is worth further studying.This paper derives the voltage stability H index,and analyzes the influence mechanism of DG on the system voltage stability with the L index,and presents the measures to improve the voltage stability.The analysis results show that:the power and voltage drop across the lines are positively correlated with the voltage stability,and the reasonable adjustment of the DG power factor can effectively improve the voltage stability of distribution network.The validity of the conclusion is verified by the example of IEEE 33 node distribution network system.
出处
《分布式能源》
2017年第4期36-39,共4页
Distributed Energy
基金
广东电网有限责任公司科技项目(GDKJQQ20152044)
关键词
分布式电源(DG)
配电网
电压稳定指标
电压降落
功率因数
distributed generation(DG)
distribution network
voltage stability index
voltage drop
power factor
