摘要
智能电网是现代电网的发展方向,它要求未来的配电网能够自由接纳分布式电源(DG)。但DG(尤其是间歇性可再生能源分布式电源)具有分散、随机变动等特性,大量接入将对系统的安全、稳定运行产生极大的影响。提出了对风力、光伏发电等DG配电网系统的可靠性进行全面准确评估的新方法。建立了间歇式分布式电源(IDG)的可靠性模型,引入关联矩阵来处理孤岛的划分问题,介绍了含IDG配电网可靠性的评估方法。通过算例分析DG对配电网可靠性的影响机制,为多种能源互补的配电网扩展规划提供一定的参考。
The intelligent power grid is the development direction of modern power grid;and it requires the future distribution network to be able to accept distributed generations(DG) freely.However,the DG(especially the intermittent renewable energy source distributed generation) has characteristics of dispersion and random variation,to access of mass of DG into distribution network will influence greatly on safe and stable operation of the system.A new evaluation method for comprehensively and accurately evaluating the reliability of the distribution network with DG,which includes wind farms,photovoltaic power stations and others,was put forward.The reliability model of intermittent distributed generation(IDG) was established.The associated matrix was imported to deal with the partition of the solitary island.The reliability evaluation method for distribution network with IDG was introduced.The influence mechanism of DG on the reliability of the distribution network was analyzed by examples,which provides certain reference for expansion plan of distribution network with multiple complementary energy sources.
出处
《华电技术》
CAS
2011年第9期4-6,9,共4页
HUADIAN TECHNOLOGY
关键词
分布式电源
可靠性模型
可靠性评估
distributed generation
reliability model
reliability evaluation
