Coordinated control strategy for HVDC frequency controllers in multi-area asynchronous grid

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems Pub Date : 2025-03-12 DOI:10.1016/j.ijepes.2025.110577

Jianxiong Lei , Rongzhao Yang , Weixiong Wu , Weicheng Lu , Weike Mo

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引用次数: 0

Abstract

Due to the complexity and fragility of large-scale synchronous grids, utilizing High Voltage Direct Current (HVDC) links for interconnecting asynchronous grids has emerged as a significant trend in modern power systems. To address the issues of limited mutual support capability between regional grids and the declining inertia and primary frequency modulation capability of regional grids with increasing penetration of renewable energy, a coordinated control strategy for HVDC frequency controllers in multi-area asynchronous grids is proposed. Firstly, a frequency control model of multi-area asynchronous grids interconnected by HVDC is constructed, and the dynamic frequency response equations of the system are obtained. Then, considering the types of disturbances in the multi-area system comprehensively, the quantitative analysis of the steady-state frequency deviation(SSFD), and whether the rectifier and inverter sides of each regional grid participate in frequency regulation, the coordinated control strategy for HVDC frequency controllers is obtained based on an exhaustive search algorithm. Finally, the impact of control parameters in the HVDC frequency controller on system frequency stability is analyzed utilizing the state-space model. Considering the results of the stability analysis, an optimization methodology for tuning the droop parameters of the frequency controller is proposed, employing an exhaustive search algorithm. The effectiveness and feasibility of the proposed control strategy and droop parameter tuning method are verified through numerical simulations.

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来源期刊

International Journal of Electrical Power & Energy Systems 工程技术-工程：电子与电气

CiteScore

12.10

自引率

17.30%

发文量

1022

审稿时长

51 days

期刊介绍： The journal covers theoretical developments in electrical power and energy systems and their applications. The coverage embraces: generation and network planning; reliability; long and short term operation; expert systems; neural networks; object oriented systems; system control centres; database and information systems; stock and parameter estimation; system security and adequacy; network theory, modelling and computation; small and large system dynamics; dynamic model identification; on-line control including load and switching control; protection; distribution systems; energy economics; impact of non-conventional systems; and man-machine interfaces. As well as original research papers, the journal publishes short contributions, book reviews and conference reports. All papers are peer-reviewed by at least two referees.