摘要
可靠性评估是配电系统规划与运行的重要基础。随着新型电力系统快速发展,多类型分布式电源规模化接入成为未来配电系统的发展趋势。风机、光伏等间歇式可再生能源的接入以及环境因素引起的元件故障风险变化使得配电系统不确定性增加。为了更加精准、高效地评估配电系统可靠性水平,基于概率期望和概率密度演化方法,该文提出一种长期和短期时变故障率下含多种分布式电源的配电系统可靠性评估解析方法,并将短期时变故障率分为一般天气下和极端天气下两种场景来评估配电系统的瞬时和平均可靠性水平。方法的有效性和高效性在改进IEEE 123节点测试系统算例评估中得到验证。
Reliability evaluation is an important foundation for power distribution system planning and operation.With the rapid development of new power systems,the scale access of multiple types of distributed generation has become the future development trend of power distribution systems.Intermittent renewable energy sources such as wind turbines and photovoltaics,as well as variations in the risk of component failures due to environmental factors,increase the system uncertainty.Based on the probability expectation and probability densityevolution methods,this paper proposes an analytical method for reliability evaluation of distribution systems with multiple distributed generations under long-term and short-term time-varying failure rates to evaluate the reliability more accurately and efficiently.The short-term evaluation is categorized into two scenarios,general weather and extreme weather,soasto evaluate the instantaneous and average reliability of the distribution system.The effectiveness and efficiency of the proposed method is verified in the evaluation of the modified IEEE 123-node test system.
作者
张鼎茂
李更丰
李怡然
别朝红
ZHANG Dingmao;LI Gengfeng;LI Yiran;BIE Zhaohong(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,Shaanxi Province,China)
出处
《中国电机工程学报》
北大核心
2025年第23期9075-9087,I0001,共14页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家优秀青年科学基金项目(52222705)。
关键词
可靠性评估
配电系统
可再生能源
时变故障率
解析法
reliability evaluation
distribution system
renewable energy
time-varying failure rate
analytical approach
