基于惩罚性变权最优综合评价模型的电磁环网解合环方案分析

发布时间：2018-01-10 08:24

本文关键词：基于惩罚性变权最优综合评价模型的电磁环网解合环方案分析　出处：《电网技术》2017年07期 　论文类型：期刊论文

【摘要】：针对目前电磁环网解合环方案的综合评价方法主要集中于层次分析法和主成分分析法的现状,首先总结了电磁环网解合环运行的原则及评价指标,结合主成分分析法和多目标决策的思想,提出了常权最优综合评价模型。此模型对各指标进行了商式逆变换和去量纲化处理,避免了主观性和偶然性。在此基础上,结合因素空间的变权理论,提出了惩罚性变权最优综合评价模型,既考虑了权重的作用,也考虑了指标值的作用。通过此模型确定的电网解合环方案,可以对电网解(合)环后的某个指标值过低的情况进行"惩罚",从而可以避免电网某个指标值过低;但是综合评价结果较高的情况,其物理背景更加符合电力系统实际。陕西电网解合环方案的仿真结果证明了惩罚性变权最优综合评价模型在确定电磁环网解合环方案时的有效性和和优越性。
[Abstract]:In view of the current situation of the current comprehensive evaluation method of the electromagnetic ring network decompression loop scheme, mainly focused on the analytic hierarchy process and the principal component analysis method, the principle and evaluation index of the electromagnetic ring network decompression loop operation are summarized firstly. Combined with principal component analysis and multi-objective decision making, the optimal comprehensive evaluation model of constant weight is put forward, which performs quotient inverse transformation and de-dimensionalization of each index. On the basis of this, combining the variable weight theory of factor space, the optimal comprehensive evaluation model of punitive variable weight is put forward, which considers the function of weight. The function of the index value is also considered. The scheme of grid disassembly loop determined by this model can "punish" the situation where the value of a certain index is too low after the grid is solved (closed) loop. Therefore, it can avoid the low value of a certain index in the power network. But the result of comprehensive evaluation is high. The simulation results show that the punitive variable weight optimal comprehensive evaluation model is effective and superior in determining the EMC scheme.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);黑龙江工业学院电气和信息工程系;国网陕西省电力公司;
【基金】：国家自然科学基金项目(51377053) “十一五”国家科技支撑计划项目(2015BAA01B04) 中央高校基本科研业务费专项基金(2015XS02)~~
【分类号】：TM732
【正文快照】： the Central Universities(2015XS02).0引言高低压电磁环网是电网发展过程中一种过渡阶段的网络结构,该运行方式一般存在短路电流大、潮流分布及安全保护装置复杂、调度运行管理困难等问题。《电力系统安全稳定导则》中明确要求,随着网架结构的逐步完善,电网应逐步解开电磁环

【相似文献】