Electromechanical-electromagnetic combined power source model for short circuit calculation with high proportion of new energy power grid

被引：0
|
作者：
Chen Q. [1 ]
Zhang Z. [1 ]
Qian B. [1 ]
Liu M. [2 ]
Li Z. [1 ]
机构：
[1] College of Energy and Electrical Engineering, Hohai University, Nanjing
[2] Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2024年 / 44卷 / 05期
基金：
中国国家自然科学基金;
关键词：
combined power source model; new energy power source; new power system; online parameter identification; short circuit calculation;
D O I：
10.16081/j.epae.202307009
中图分类号：
学科分类号：
摘要：
To address the issue of the traditional power source model inability to apply continuously in calculation and analysis in the new power system，an electromechanical-electromagnetic combined power source model for short circuit calculation of high proportion of new energy power grid is proposed. On the one hand，considering the external output characteristics of the new energy power source under the general control strategy，a single voltage-controlled current source is used to equivalent the overall output of massive new energy sources on the power supply side. On the other hand，the external output characteristics based on the fundamental frequency of traditional generators are preserved according to the division of short circuit fault time scale，and three voltage sources with different values and attenuation speeds are used to equivalently represent the overall output of all generators on the power supply side. Furthermore，a combined power source model is constructed by connecting three voltage sources and a voltage-controlled current source in parallel，and the parameters of the combined power source model are identified online using the interior point method. The applicability of the combined power source model is verified through short circuit simulation data and measured fault wave recording data of power grid. © 2024 Electric Power Automation Equipment Press. All rights reserved.
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页码：58 / 64
页数：6
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