摘要
准确进行配电网可靠性评估,对配电系统规划和安全经济运行具有重要意义。针对当配电网母线、馈线分支较多且含备用电源时,传统方法评估效果下降的问题,提出了一种面向元件组且适用于含备用电源情况的改进MCS(蒙特卡洛模拟)评估算法。介绍了面向元件组区域划分和编号的原则、方法。考虑到系统有足够大容量的备用电源时,备用电源能保护到的区域的负荷可持续供电能力得到改善,将负荷的类型设为3,故障修复时间变为联络开关的切换时间。用元件层级的概念进行修正得到含备用电源的负荷故障类型矩阵。以IEEE RTBS BUS6系统的F4馈线为评估对象,利用方差系数检验了改进MCS的收敛性,并分析了收敛精度与结果误差的关系,算例结果验证了所提算法的有效性。
Accurate and rapid assessment of distribution network reliability is of great significance to the distribution system planning and safe and economic operation. With the standby power supply and lots of distribution network buses and the feeder branch, the effectiveness of the traditional MCS method declines. In the case of standby power supply, this paper proposes a method to improve the MCS evaluation algorithm. This paper introduces the principle and method of component oriented area dividing and numbering. Considering that the capacity of the standby power is large enough, the region that the standby power can protect has been improved. So the type of load is set to 3 and the fault repair time becomes switching time of the contact switch. The concept of component level is used to modify the load fault type matrix. The RTBS F4 feeder is used as an example to show that the proposed method can be used for the reliability evaluation of the complex distribution network with branch feeders and the relationship between the convergence accuracy and error of the results is analyzed.
作者
常学佳
郑焕坤
常鲜戎
李倩
CHANG Xuejia ZHENG Huankun CHANG Xianrong LI Qian(School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003 Maintenance Branch of State Grid Shanxi Electric Power Company, Taiyuan 030000, China)
出处
《电力科学与工程》
2017年第3期18-25,共8页
Electric Power Science and Engineering
关键词
配电网可靠性
MCS评估算法
面向分区
收敛精度
distribution network reliability
MCS evaluation algorithm
partition oriented
convergence precision
作者简介
常学佳（1990-），男，硕士研究生，研究方向为电力系统分析与控制。
