Power Flow Sensitivity Analysis Model with Wide Adaptability for Active Distribution Networks

被引：0
|
作者：
Liu Q. [1 ]
Wang S. [1 ]
Ji X. [2 ]
机构：
[1] Key Laboratory of the Ministry of Education on Smart Power Grids, Tianjin University, Tianjin
[2] College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2020年 / 44卷 / 13期
基金：
国家重点研发计划;
关键词：
Active distribution network; Branch power; Line loss; Nodal voltage; Sensitivity model;
D O I：
10.7500/AEPS20190509002
中图分类号：
学科分类号：
摘要：
The large-scale integration of distributed generations, energy storage systems and flexible loads in the distribution network causes frequent changes in power flows of the distribution network. It is very important for the planning and operation of active distribution networks to build an accurate and concise function model of node injection power and operation parameters. Combined with the radial topology of the distribution network, a power flow sensitivity analysis model with wide adaptability to the change of node injection power is proposed. The proposed model includes a quadratic sensitivity model of nodal power injections to line losses, a linear sensitivity model of nodal power injections to nodal voltages, a quadratic sensitivity model of nodal power injections to branch power. The effectiveness of the sensitivity model applied to the distribution system with weak ring network is analyzed. The IEEE 33-bus distribution system and the IEEE 123-bus distribution system with ring network are used for simulation analysis. The simulation results prove the effectiveness of the proposed sensitivity model. © 2020 Automation of Electric Power Systems Press.
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页码：81 / 88
页数：7
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