Enhancing damping of low‐frequency oscillations in power networks through energy storage system‐based controller

IF 1.8 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Circuit Theory and Applications Pub Date : 2024-08-04 DOI:10.1002/cta.4196

Rohit Kumar, Soumya R. Mohanty, Mitresh Kumar Verma

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引用次数: 0

Abstract

SummaryMitigating inter‐area low‐frequency oscillations is a significant concern in multi‐machine power systems due to their adverse effects on system stability. These oscillations are intricately linked with power oscillations. So appropriate power modulation through the Battery Energy Storage System (BESS) can be an effective strategy for preserving system stability. In this paper, the maximal of all minimal residue indices under variations in power system operating conditions is utilized as the index for identifying the location for installation of the BESS, the damping control loop, and the feedback signal. A fixed‐structure scheme‐based wide‐area damping controller (WADC) is proposed for the BESS, providing sufficient damping of inter‐area oscillation modes. A modified IEEE 39‐bus system is simulated using a real‐time digital simulator as a test system in this work. The simulation results confirmed that the proposed WADC could effectively damp various inter‐area oscillation modes. Furthermore, it offers robust damping performance over contingencies associated with the system's various operating scenarios as well as the uncertainty associated with fixed and variable communication delays in the feedback signal of WADC and the integration of solar photovoltaic systems. Moreover, a comparative analysis of the proposed WADC is carried out with a BESS‐based wide‐area power system stabilizer, which is found to be more effective in mitigating system inter‐area oscillations.

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通过基于储能系统的控制器增强对电网低频振荡的抑制作用

摘要由于区域间低频振荡会对系统稳定性产生不利影响，因此在多机电力系统中，缓解区域间低频振荡是一个重要问题。这些振荡与功率振荡密切相关。因此，通过电池储能系统（BESS）进行适当的功率调制是保持系统稳定性的有效策略。本文利用电力系统运行条件变化下所有最小残差指数的最大值作为确定 BESS 安装位置、阻尼控制回路和反馈信号的指标。为 BESS 提出了一种基于固定结构方案的广域阻尼控制器 (WADC)，可为区域间振荡模式提供足够的阻尼。在这项工作中，使用实时数字模拟器模拟了一个改进的 IEEE 39 总线系统作为测试系统。仿真结果证实，所提出的 WADC 可以有效地阻尼各种区域间振荡模式。此外，它还能在与系统各种运行情况相关的突发事件以及与 WADC 反馈信号中固定和可变通信延迟及太阳能光伏系统集成相关的不确定性中提供稳健的阻尼性能。此外，还对拟议的 WADC 与基于 BESS 的广域电力系统稳定器进行了比较分析，发现后者在缓解系统区域间振荡方面更为有效。

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

International Journal of Circuit Theory and Applications 工程技术-工程：电子与电气

CiteScore

3.60

自引率

34.80%

发文量

277

审稿时长

4.5 months

期刊介绍： The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.