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research-article

The coordinated immersion and variance control of power systems with excitation and steam-valve

[+] Author and Article Information
Shengtao Li

School of Information Science and Engineering, Shandong Normal University, Jinan, China
shengtaoli1985@163.com

Xiaomei Liu

School of Management Science and Engineering, Shandong Normal University, Jinan, China
19785355@qq.com

Xiaoping Liu

Faculty of Engineering, Lakehead University, Thunder Bay, Canada
xliu2@lakeheadu.ca

1Corresponding author.

ASME doi:10.1115/1.4038342 History: Received March 08, 2016; Revised October 25, 2017

Abstract

Transient stability is the key problem for reliable and secure planning under the new deregulated market conditions. By using immersion and invariance (I&I) method, a nonlinear coordinated generator excitation and steam-valve controller is designed to improve transient stability of power systems. The proposed coordinated immersion and invariance controller can assure power angle stability, voltage and frequency regulations, when a large disturbance occurs on the transmission line or a small perturbation to mechanical power. Compared with the Lyapunov method, the proposed method does not need to construct a Lyapunov energy function. Some numerical simulations are used to validate the proposed controller. Simulation results show that the nonlinear coordinated I&I controller has better control performance than the existing coordinated passivation controller (CPC).

Copyright (c) 2017 by ASME
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