Online Analysis and Optimal Decision-making of Short-circuit Current in Interconnected Power Grids

被引：0
|
作者：
Yang H. [1 ]
Yang J. [2 ,3 ]
Xu W. [2 ,3 ]
Qiu J. [1 ]
Zhang J. [1 ]
Xu X. [2 ,3 ]
机构：
[1] CSG Electric Power Dispatching and Control Center, Guangdong Province, Guangzhou
[2] NARI Group Corporation, State Grid Electric Power Research Institute, Jiangsu Province, Nanjing
[3] State Key Laboratory of Smart Grid Protection and Control, NARI Group Corporation, State Grid Electric Power Research Institute, Jiangsu Province, Nanjing
来源：
Dianwang Jishu/Power System Technology | 2024年 / 48卷 / 05期
关键词：
AC/DC power grid; functional architecture; online analysis; optimization control; short-circuit current;
D O I：
10.13335/j.1000-3673.pst.2023.0325
中图分类号：
学科分类号：
摘要：
The technology of online analysis is an important means to deal with the problem of the excessive short-circuit current and the random fluctuation in an AC/DC power grid. Combining the modeling scope and the real-time data acquisition of a dispatching automation system, the calculation principle of the online short-circuit current and the over-proof criterion are proposed. The multi-objective step-by-step optimization decision-making of the day-ahead and the real-time short-circuit currents is proposed, which improves the adaptability of the short-circuit current optimization strategies to the time-varying and complexity of the power grid. The functional architecture of the online short-circuit current analysis and optimization control system is constructed. By integrating the functions of the dispatching and the station terminals, the reliable closed-loop control of the short-circuit current is achieved. This method achieves the application of the refined analysis, the comprehensive optimization decision and the precise control of the short-circuit current in the actual power grid. The effectiveness and practicability of this method are verified by the analysis of the running results of the short-circuit current analysis and optimization control system in an actual power grid. © 2024 Power System Technology Press. All rights reserved.
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页码：2218 / 2226
页数：8
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