Assessment of operation risk for power system containing wind power based on power flow transferring and tracing

被引：0
|
作者：
Ma Y. [1 ]
Yang X. [1 ]
Zhao S. [1 ]
Fu Y. [1 ]
Wang Z. [1 ]
Dong L. [2 ]
机构：
[1] Key Laboratory of Distributed Energy Storage and Microgrid of Hebei Province, North China Electric Power University, Baoding
[2] State Grid Qinghai Electric Power Company, Xining
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2021年 / 41卷 / 01期
关键词：
Assessment of operation risk; Branch outage distribution factor; Electric power systems; Nodal transfer distribution factor; Power flow; Wind power fluctuation;
D O I：
10.16081/j.epae.202012007
中图分类号：
学科分类号：
摘要：
To address the rapid operation risk assessment of power system containing wind power,a risk assessment approach based on power flow transferring and tracing is proposed. Firstly,based on Markov theory,a wind power fluctuation model that is correlative with wind speed is established,in which the correlation between wind power fluctuation and time and wind speed is considered. Secondly,a rapid power flow calculation approach is developed by deriving the nodal transfer distribution factor and branch outage distribution factor suitable for multi-branch outage,which avoids iterative calculation of power flows,so that improving the computational efficiency. Thirdly,a load-shedding model based on power flow tracing theory is established to screen out the most effective set of control nodes. In this way,the system-wide global search can be transferred into local search. Hence,the rapid risk assessment can be achieved in two aspects of improved power flow calculation algorithm and load-shedding model. Finally,the accuracy and effectiveness of the proposed model are verified by simulation analysis of IEEE-RTS79 system. Furthermore,the load-shedding risk and the line over-limit risk indices are calculated to analyze the impact of different wind speeds on the system operation risk. This can provide reference for the operation risk assessment of power system containing wind power. © 2021, Electric Power Automation Equipment Press. All right reserved.
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页码：77 / 83
页数：6
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