Identification of critical lines in AC/DC hybrid large power grid based on steady-state security region

被引：0

作者：

Xin J. ^{[1
]}

Yang C. ^{[2
]}

Shu Z. ^{[3
]}

Zhou B. ^{[2
]}

Yao W. ^{[2
]}

Chen Y. ^{[1
]}

Wen J. ^{[2
]}

机构：

[1] State Grid Jiangxi Electric Power Company Limited, Nanchang

[2] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan

[3] Electric Power Research Institute, State Grid Jiangxi Electric Power Company, Nanchang

来源：

Yang, Chengxiang (chengxiangyang1234@163.com) | 1600年 / Power System Protection and Control Press卷 / 48期

基金：

中国国家自然科学基金;

关键词：

AC/DC hybrid power system; branch flow model; critical lines identification; DC blocking; power flow violation; steady-state security region;

D O I：

10.19783/j.cnki.pspc.190562

中图分类号：

学科分类号：

摘要：

The successive commissioning of UHVDC transmission systems leads to changes in the operating characteristics of power system, the weak link in AC/DC hybrid power grid will change. In order to identify the critical lines in AC/DC hybrid power grid and avoid the occurrence of blackouts, a critical lines identification method based on steady-state security region for AC/DC hybrid power grid is proposed. The steady-state security region analysis method is used to construct the steady-state security region of AC/DC hybrid power system. Considering the power flow limit of AC line and the blocking criterion of DC inverter, the steady-state security margin calculation method for AC/DC hybrid power system is proposed combined with the branch flow model. The critical lines identification process of AC/DC hybrid power system is given with the steady-state security margin as an index. Finally, the simulation analysis is carried out on the actual power system of Jiangxi Power Grid, and the results demonstrate the effectiveness and rationality of the proposed method. © 2020 Power System Protection and Control Press. All rights reserved.

引用

页码：165 / 172

页数：7

共 24 条

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