考虑馈线容量约束的多微网配电系统可靠性评估  

Reliability Evaluation of Distribution Systems Including Microgrids with Consideration of Feeder Capacity Constraint

作　　者：葛少云[1] 王浩鸣[1] 刘洪[1] 

机构地区：[1]天津大学智能电网教育部重点实验室,天津300072

出　　处：《天津大学学报》2011年第11期961-967,共7页Journal of Tianjin University(Science and Technology)

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB219700)

摘　　要：与传统配电网相比,智能配电网的优势之一就是能够在改善配电资产利用效率的同时提高供电可靠性.为了定量分析智能配电网的这种效果,提出了一种考虑馈线容量约束的多微网配电系统供电可靠性蒙特卡洛评估模型.针对配电网特点,在传统配电网故障模式影响分析(FMEA)过程中引入了馈线容量约束.以此为基础,结合智能电网环境下微网的结构特征和功能特点,分别从故障位于微网外部和内部两方面阐述了其FMEA过程,进而给出了模型的计算机评估流程.应用该模型,通过实例对含有多个微网的配电系统的馈线利用情况和供电可靠性之间的关系进行了分析.Compared with the traditional distribution network, one of the advantages of smart distribution grid is its ability to increase power supply reliability while improving asset utilization efficiency. To analyze this advantage quantitatively, this paper proposed a Monte Carlo simulation model which could evaluate the reliability indices of distribution networks including microgrids with consideration of feeder capacity constraint. According to the characteristics of distribution system, feeder capacity constraint was added in the failure modes and effects analysis （FMEA） procedure of traditional network. On this basis, failures were divided into two categories of inside and outside the microgrid and the corresponding FMEA procedure was illustrated according to the structural and operating characteristics of microgrid. Further, the computer evaluation process of the proposed model was put forward. An example was evaluated using the proposed model, and the relationship between feeder utilization and reliability was analyzed.

关 键 词：分布式电源 馈线负载率 微网 可靠性评估 智能配电网 

分 类 号：TM727.2[电气工程—电力系统及自动化] TM732