Dynamic inertia security analysis under uncertain power variability

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-03-17 DOI:10.1016/j.epsr.2025.111565

Wei Hua, Dongdong Li, Yang Mi

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引用次数: 0

Abstract

In modern power systems, the integration of renewable energy sources (RESs) leads to increased uncertainty and reduced system inertia. The provision of inertia from RESs also adds uncertainty to system inertia, so it is important to study the impact of inertia uncertainty on frequency stability to ensure power system stability and security. To address the problem that how inertia uncertainty affects system frequency, this paper proposes a dynamic inertia security analysis method, integrating the probabilistic analysis method and the stochastic differential equations (SDEs), for inertia uncertainty analysis under uncertain power variability (UPV). A stochastic process is used to model UPV, and SDEs are used to model frequency dynamic under UPV accordingly. A frequency stability possibility index that includes frequency deviation and rate of change of frequency (RoCoF) is proposed for frequency stability analysis. The trajectories of the frequency are generated using Monte Carlo simulation (MCS) method considering dynamic inertia and UPV. The dynamic inertia security analysis is conducted to further analyze frequency stability. The proposed method is verified by a typical system frequency response (SFR) model and IEEE 39-bus system on Simulink.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.