Application of superconducting magnetic energy storage unit to damp power system low frequency oscillations

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI:10.1109/DRPT.2008.4523785

L. Cui, Dahu Li, J. Wen, Zhenhua Jiang, Shijie Cheng

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引用次数: 9

Abstract

The objective of this paper is to theoretically investigate the application of superconducting magnetic energy storage (SMES) system in damping power system low-frequency electromechanical oscillations. In the paper, the SMES system is studied in the context of a single-machine infinite-bus (SMIB) power system. The mathematical model of the SMIB power system including a SMES unit is established, and the Phillips-Heffron control structure of the power system is described. Based on the principle of the complex torque coefficient (CTC) method, the expression of the complex electromagnetic torque of the entire power system including the SMES unit is derived. A nonlinear proportion-integral-differential (PID) control strategy is proposed for the SMES system to enhance the power system damping. Simulation results demonstrate that the SMES is effective in damping the power system low-frequency oscillations and the proposed nonlinear PID controller is robust to regulate the SMES unit.

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超导磁储能装置在抑制电力系统低频振荡中的应用

本文的目的是从理论上研究超导磁储能系统在抑制电力系统低频机电振荡中的应用。本文在单机无限母线(SMIB)电力系统的背景下，对SMES系统进行了研究。建立了包含一个SMES单元的SMIB电力系统的数学模型，描述了电力系统的菲利普斯-赫夫龙控制结构。基于复转矩系数(CTC)法的原理，推导了包括中小企业机组在内的整个电力系统的复电磁转矩表达式。提出了一种用于中小企业系统的非线性比例-积分-微分(PID)控制策略，以增强电力系统的阻尼。仿真结果表明，该控制器能有效地抑制电力系统的低频振荡，且所提出的非线性PID控制器具有鲁棒性。

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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2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

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