摘要
提出了基于可能度概念的区间数大小比较通用数值计算方法。将区间分析应用于提高配电系统可靠性的措施中,提出并实现了以提高系统可靠性为目标的配电网络重构的区间方法。区间算法以特定的系统可靠性指标或系统停电损失费用与网损费用的加权和作为综合评价值,以综合评价值减少的可能度最大化为目标函数。算法考虑可靠性参数与网络动态变化的不确定因素,采用三相区间潮流和区间可靠性算法,进行隐含并行寻优,不仅求得了优化的网络结构,并且给出了网络结构的优化程度,最大可能地降低决策风险。算例分析表明该算法实用、有效。配套软件成为配电系统规划及运行的灵活、易用的工具。
The general method for ranking interval numbers based on the concept of possibility is proposed. A numerical
solution for comparing interval numbers is presented based on Gaussian quadrature. An interval method for multi-objective
network reconfiguration is further presented as a means for improving the distribution system reliability. The interval objective
functions considered are minimization of energy losses and average energy not supplied (ENS), minimization of system average
interruption frequency index (SAIFI) and system average interruption duration index (SAIDI), maximization of average service
availability index (ASAI), minimization of customer average interruption duration index (CAIDI), load balancing and voltage
quality improvement, etc. This method takes into consideration the uncertainty of system parameters and aims at globally
maximizing the possibility of reliability improvement and minimizing energy losses. Moreover, the implicitly parallel search
algorithm, a novel very largerscale neighborhood search methodology for interval network reconfiguration, is initiated by the
authors. Its capability of finding the optimum configuration is comparable to the simulated annealing (SA), while its speed is
much higher than the latter. Numerical results demonstrate that the interval method is valid and effective. The corresponding
software provides a flexible and easyto-use tool for distribution system planning, engineering and operations.
出处
《电力系统自动化》
EI
CSCD
北大核心
2004年第21期22-26,33,共6页
Automation of Electric Power Systems
关键词
配电系统
网络重构
可靠性
区间分析
distribution system
network reconfiguration
reliability
interval analysis
