Coordinated Control of EPT and Generator Excitation System for Multidouble-Circuit Transmission-Lines System
Coordinated Control of EPT and Generator Excitation System for Multidouble-Circuit Transmission-Lines System
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DOI：
10.1109/tpwrd.2007.905552
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发表时间：
2008
影响因子：
4.4
通讯作者：
Dan Wang;C. Mao;Jiming Lu
中科院分区：
文献类型：
--
作者：
Dan Wang;C. Mao;Jiming Lu
提出了一种新的电子电力变压器（EPT）与发电机励磁之间的最优协调控制策略，以提高电力系统的动态性能和稳定性。所研究的系统基于单机多双电路传输线（SMTL）系统。在SMTL系统中，发电机通过具有双回传输线的常规电力变压器连接到无限母线，并通过具有双回传输线的EPT连接到另一无限母线。建立了SMTL系统的数学模型，并基于线性最优控制理论提出了最优协调控制策略。对SMTL系统进行了数值仿真，仿真结果表明，所提出的控制策略对于多种扰动具有良好的动态性能，能够有效改善系统阻尼和电压性能。
A new optimal coordinated control strategy between an electronic power transformer (EPT) and generator excitation is proposed to improve power system dynamic performance and stability. The studied system is based on a single-machine multidouble-circuit transmission-lines (SMTL) system. In the SMTL system, the generator is connected to an infinite bus through a conventional power transformer with a double-circuit transmission line, and to another infinite bus with an EPT with a double-circuit transmission line. The mathematical model of the SMTL system is established, and the proposed optimal coordinated control strategy is upon linear optimal control theory. Numerical simulations were carried out for the SMTL system, and the simulation results showed that the proposed control strategy has good dynamical performance for a variety of disturbances, and can improve the system damping and voltage performance effectively.