Probabilistic Continuous Power Flow Method for AC/DC Systems with Wind Power Considering Frequency Characteristics of Source and Load

被引：0
|
作者：
Ma R. [1 ]
Liu Z. [1 ]
He P. [1 ]
Yu H. [2 ]
机构：
[1] School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha
[2] Economical and Technical Research Institute of State Grid Hunan Electric Power Co., Ltd., Changsha
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2020年 / 44卷 / 06期
基金：
中国国家自然科学基金;
关键词：
AC/DC system; Frequency regulation characteristic; Probabilistic continuous power flow; Static characteristics of voltage and frequency of load; Wind power generation;
D O I：
10.7500/AEPS20190217002
中图分类号：
学科分类号：
摘要：
In view of the fact that the traditional continuous power flow method is difficult to adapt to the AC/DC interconnected systems with access of large-scale wind power, this paper proposes a probabilistic continuous power flow calculation method for AC/DC systems with wind power. Based on the frequency regulation characteristics of conventional units and the static characteristics of voltage and frequency of loads, the randomness of wind power output, the DC control mode and the frequency fluctuation deviation constraints are taken into account. Then this paper establishes the probabilistic continuous power flow equation of AC/DC systems with wind power considering the frequency regulation of power sources and static characteristics of voltage and frequency of loads. Based on the Jacobian matrix of the modified equation, the load margin sensitivity index reflecting the frequency fluctuation, wind power output and control mode is derived. The power flow solution and load margin in multiple scenarios of N and N-1 states are obtained by combining Monte Carlo method and predictor-corrector method. The correctness and validity of the proposed method are verified by simulation results of the modified IEEE 39-bus system. © 2020 Automation of Electric Power Systems Press.
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页码：27 / 36
页数：9
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