中国电机工程学报2016，Vol.36Issue(2)：342-349,590,9.DOI:10.13334/j.0258-8013.pcsee.2016.02.004
柔性直流环节对配电网优化运行作用的概率评估
Probabilistic Evaluation on the Benefits of Flexible DC Link for Distribution Network Optimal Operation
摘要
Abstract
The access of flexible DC link will be helpful to improve the power flow control ability of distribution network. This paper proposes a probability-based method to evaluate the benefits of flexible DC link for optimal operation distribution network. The probabilistic optimal power flow model (P-OPF) of distribution network with DC link was established using the steady-state model of DC link. The probabilistic models of distributed generators (DG) output were discretized to construct multiple conditional probability problems with the certain power injection of DG. The P-OPF model was solved in each conditional event based on particle swarm optimization algorithm and cumulant-based analytic method. The full probability distributions of stochastic variables in optimized operation were obtained by accumulating all Gauss functions of conditional events according to the total probability formula. A case study of modified IEEE 33-bus test system was carried out in different scenarios. Results show that the flexible DC link plays an active role on the optimal operation of distribution network, especially with high penetration of DG. The proposed method has theoretical and practical significance for the access planning of DC link in a distribution network.关键词
柔性直流环节/主动配电网/概率评估/随机优化潮流/离散概率模型/全概率理论Key words
flexible DC link/active distribution network (ADN)/probabilistic evaluation/stochastic optimal power flow (OPF)/discrete probabilistic model/total probability theory分类
信息技术与安全科学引用本文复制引用
和敬涵,李智诚,王小君..柔性直流环节对配电网优化运行作用的概率评估[J].中国电机工程学报,2016,36(2):342-349,590,9.基金项目
国家自然科学基金项目(51277009) （51277009）
国家863高技术基金项目(2015AA050101). Project Supported by National Natural Science Foundation of China (51277009) （2015AA050101）
The National High Technology Research and Development of China 863 Program (2015AA050101). （2015AA050101）
