Research Papers

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 250358, China
e-mail: shengtaoli1985@163.com

Xiaomei Liu

School of Management Science and Engineering,
Shandong Normal University,
Jinan 250358, China

Xiaoping Liu

Faculty of Engineering,
Lakehead University,
Thunder Bay, ON P7B5E1, Canada

1Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received March 8, 2016; final manuscript received October 25, 2017; published online December 14, 2017. Editor: Joseph Beaman.

J. Dyn. Sys., Meas., Control 140(4), 041011 (Dec 14, 2017) (8 pages) Paper No: DS-16-1131; doi: 10.1115/1.4038342 History: Received March 08, 2016; Revised October 25, 2017

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 I&I 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).

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Fig. 1

Single machine infinite bus system

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Fig. 2

The closed-loop system response with proposed controller

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Fig. 3

The closed-loop system response with CPC in Ref. [6]

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Fig. 4

The closed-loop system response with proposed controller

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Fig. 5

The closed-loop system response with CPC in Ref. [6]

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Fig. 6

The closed-loop system response with proposed controller

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Fig. 7

The closed-loop system response with CPC in Ref. [6]



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