Iterative Optimization Method for Frequency Stability Constraints in Renewable Energy-Integrated Power Systems

IF 2.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Generation Transmission & Distribution Pub Date : 2025-09-29 DOI:10.1049/gtd2.70165

Ruilin Gao, H. F. Wang

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Abstract

This paper presents a practical method for allocating inertia and damping in power systems integrated with renewable energy sources (RES). The frequency response model of the power system is first established, with distinct modeling of the dynamics of synchronous generators (SGs) and three types of RES units. A state-space model, which describes the relationship between frequency response and disturbances, is derived through the disturbance allocation process. A fitting method for frequency and power responses is proposed based on modal analysis. Analytical formulas for frequency stability indices (FSIs) and power indices are derived. Furthermore, applying matrix perturbation theory, an iterative optimization method for inertia and damping allocation of RES units is proposed and validated through simulation cases using the modified IEEE 39-bus system, including scenarios with multiple disturbance locations, which demonstrate the effectiveness and flexibility of the proposed approach.

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可再生能源-集成电力系统频率稳定约束的迭代优化方法

本文提出了一种实用的可再生能源电力系统惯性和阻尼分配方法。首先建立了电力系统的频率响应模型，对同步发电机（SGs）和三种类型的RES机组进行了不同的动力学建模。通过扰动分配过程，建立了描述频率响应与扰动之间关系的状态空间模型。提出了一种基于模态分析的频率响应和功率响应拟合方法。推导了频率稳定指标和功率指标的解析公式。应用矩阵摄动理论，提出了一种RES单元惯性和阻尼分配的迭代优化方法，并通过改进的IEEE 39总线系统的仿真案例进行了验证，包括多干扰位置的场景，验证了所提方法的有效性和灵活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Iet Generation Transmission & Distribution 工程技术-工程：电子与电气

CiteScore

6.10

自引率

12.00%

发文量

301

审稿时长

5.4 months

期刊介绍： IET Generation, Transmission & Distribution is intended as a forum for the publication and discussion of current practice and future developments in electric power generation, transmission and distribution. Practical papers in which examples of good present practice can be described and disseminated are particularly sought. Papers of high technical merit relying on mathematical arguments and computation will be considered, but authors are asked to relegate, as far as possible, the details of analysis to an appendix. The scope of IET Generation, Transmission & Distribution includes the following: Design of transmission and distribution systems Operation and control of power generation Power system management, planning and economics Power system operation, protection and control Power system measurement and modelling Computer applications and computational intelligence in power flexible AC or DC transmission systems Special Issues. Current Call for papers: Next Generation of Synchrophasor-based Power System Monitoring, Operation and Control - https://digital-library.theiet.org/files/IET_GTD_CFP_NGSPSMOC.pdf