Optimization and Control of Voltage Security in Active Distribution Network Considering Global Correlation

被引：0
|
作者：
Chen Z. [1 ]
Gu D. [1 ]
Guo Q. [1 ]
机构：
[1] School of Electrical Engineering, Southeast University, Nanjing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2023年 / 47卷 / 21期
基金：
中国国家自然科学基金;
关键词：
active distribution network (ADN); optimal control; Sobol’method; uncertainty; voltage stability;
D O I：
10.7500/AEPS20230324009
中图分类号：
学科分类号：
摘要：
In the new power system, the uncertainty of large-scale distributed renewable energy on the distribution network side makes the security problems of voltage increasingly prominent. The existing methods mainly assume that the random variables follow independent distribution, and seldom consider the correlation between random distributions. However, the correlation of random variables on the distribution network side is strong, which reduces the voltage control effect. An optimization and control strategy of voltage stability in active distribution network considering global sensitivity is proposed. Firstly, L index is used to measure the voltage stability of the system, and a probabilistic power flow model considering the stability of power systems in multi-scenarios is constructed. Secondly, based on the global sensitivity of Sobol’method, the influence of uncertainty of input variables and correlation between variables on voltage stability is quantitatively analyzed. Then, based on the results of sensitivity analysis, the control equipment in the solution system is optimized. Finally, the simulation is carried out in the modified IEEE 33-bus system, IEEE 118-bus system and actual system. The results show that the optimization and control strategy in multi-stochastic scenarios based on global sensitivity can realize the efficient utilization of the control equipment in different operation scenarios and support the safe operation of the active distribution network while considering the multi-variable correlation. © 2023 Automation of Electric Power Systems Press. All rights reserved.
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页码：99 / 107
页数：8
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