Coordinated multiple HVDC modulation emergency control for enhancing power system frequency stability

被引：11
作者：
Wang, Tong [1 ]
Xiang, Yuwei [1 ]
Li, Congcong [1 ]
Wang, Zengping [1 ]
机构：
[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China
来源：
IET RENEWABLE POWER GENERATION | 2020年 / 14卷 / 18期
基金：
中国国家自然科学基金;
关键词：
power system interconnection; power system control; power system stability; power transmission control; frequency response; HVDC power transmission; power grids; power system frequency stability; high-voltage direct current power modulation; high power shortage fault disturbance; emergency control method; active powers; multiple HVDC lines; system frequency response model; first-order differential method; AC bus voltage; actual HVDC modulation capacity; HVDC real-time modulation capacity; coordinated multiple HVDC modulation emergency control model; modulation cost; maximum frequency threshold; real-power system; enhancing frequency stability; TRANSIENT STABILITY; STRATEGY; GRIDS;
D O I：
10.1049/iet-rpg.2020.0445
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
High-voltage direct current (HVDC) power modulation can effectively improve the system frequency stability after high power shortage fault disturbance. This study presents an emergency control method by coordinating the active powers of multiple HVDC lines for enhancing the frequency stability. Firstly, the system frequency response model with HVDC modulation is built, and then a simplified method for calculating the sensitivity of maximum frequency to HVDC modulation is proposed based on the first-order differential method. Next, based on a functional relationship of the AC bus voltage and the actual HVDC modulation capacity, the methodology for calculating the HVDC real-time modulation capacity is proposed. Finally, the coordinated multiple HVDC modulation emergency control model is established which aims to minimise the modulation cost considering the maximum frequency threshold. The proposed methodology has been tested in a real-power system. The simulation results of different scenarios have verified its effectiveness in suppressing the rise of maximum frequency and enhancing frequency stability.
引用
收藏
页码：3881 / 3887
页数：7
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