电力系统及其自动化学报2019，Vol.31Issue(4)：99-105,7.DOI:10.3969/j.issn.1003-8930.2019.04.014
含分布式电源配电网供电能力的概率评估
Probabilistic Evaluation on Power Supply Capability of Distribution System with Distributed Generations
叶莘 1韦钢 1周利骏 2张永超1
作者信息
- 1. 上海电力学院电气工程学院,上海 200090
- 2. 上海合泽电力工程设计咨询有限公司,上海 200090
- 折叠
摘要
Abstract
The increasing penetration of distributed generations(DGs)makes the evaluation on the power supply capa?bility of distribution network more complicated. With the consideration of output uncertainties of DGs,the evaluation indexes for the power supply capability of distribution network are proposed. By using the two-point estimate method, the randomness of the research object can be changed into a deterministic problem,then the repeat power flow(RPF) algorithm is used to calculate the supply power of samples. According to Cornish-Fisher expansion,the probabilistic dis?tribution functions of supply power are calculated,and a model of probability density is established. Afterwards,a prob?abilistic evaluation method for the power supply capability of distribution network with DGs is proposed. Based on a nu?merical example of an IEEE 33-bus system,the proposed method is compared with Monte Carlo simulation;the analy?sis results show that the proposed method has advantages in feasibility and rapidness,which can effectively evaluate the power supply capability of distribution network with DGs.关键词
分布式电源/供电能力/两点估计法/重复潮流法/柯尼斯-费希尔级数Key words
distributed generation(DG)/power supply capability/two-point estimate method/repeat power flow (RPF)algorithm/Cornish-Fisher expansion分类
信息技术与安全科学引用本文复制引用
叶莘,韦钢,周利骏,张永超..含分布式电源配电网供电能力的概率评估[J].电力系统及其自动化学报,2019,31(4):99-105,7.
