Optimized design of wide-area PSS for damping of inter-area oscillations

Patidar, N. P.; Kolhe, Mohan Lal; Tripathy, N. P.; Sahu, Binod Kumar; Sharma, Archi; Nagar, L. K.; Azmi, Aimie Nazmin

doi:10.1109/peds.2015.7203453

Cited by 9 publications

(8 citation statements)

References 14 publications

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“…For analyzing the small signal stability of any system, the system model can be linearized around an operating point i.e. the disturbances are considered to be so small or incremental in nature so that a linear model of the system around an operating point can be developed [13][14]. The state space representation of the power system can be written as…”

Section: Eigen Value Analysismentioning

confidence: 99%

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Optimum placement of PMU for wide area measurement systems

Kolhe¹,

Patidar²,

Nagar³

et al. 2018

SGCE

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This paper presents identification of a best selection process for selecting the most effective stabilizing signal to improve damping of inter area oscillations in a multimachine power system. Phasor Measurement Units or PMUs are a key element of the Wide Area Measurement Systems (WAMS). The large amount of data collected by PMUs need to be channelized to regional and global data centers where real-time state estimation, and protection, stabilization decisions are made. It is shown in this paper that how different signal selection techniques provides different control loop for damping of a particular inter area mode of oscillations. In spite of these the controller locations were obtained for optimum placement of phasor measurement units for wide area measurement systems. It is resulted from the two area 4 machine system that the HSV based signal selection approach performs excellent in both small and large disturbance for the test system compared to both residue and geometric measure of joint controllability and observability approach. Non-linear simulations are carried out in order to evaluate the performance of different approaches of signal selection under study.

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Section: Eigen Value Analysismentioning

confidence: 99%

“…Therefore a small Kundur's two area 4 machine power system has been set up to deal with the most of the issues/challenges faced by wide-area control. In the test system all the generators are equipped with governor, AVR, and IEEE ST1A type static exciter [13]. The loads taken here are constant impendence type and connected to bus no.…”

Section: Test Systemmentioning

confidence: 99%

Optimum placement of PMU for wide area measurement systems

Kolhe¹,

Patidar²,

Nagar³

et al. 2018

SGCE

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show abstract

“…In recent years, as the wide‐area measurement system (WAMS) is widely applied in power systems, remote‐measurement‐based wide‐area controllers have brought significant improvement in restraining inter‐area oscillation modes . A two‐stage global PSS controller can damp out local and inter‐area oscillation mode with local and global signal separately . Then, genetic algorithm is used to optimize the parameters of the wide‐area controller.…”

Section: Introductionmentioning

confidence: 99%

“…E-mail: lhtlht@gxu.edu.cn College of Electrical Engineering, Guangxi University, Nanning 530004, Guangxi Zhuang Autonomous Region, China adverse control effects between these PSSs. In recent years, as the wide-area measurement system (WAMS) is widely applied in power systems, remote-measurement-based wide-area controllers have brought significant improvement in restraining inter-area oscillation modes [9][10][11][12][13]. A two-stage global PSS controller can damp out local and inter-area oscillation mode with local and global signal separately [11].…”

Section: Introductionmentioning

confidence: 99%

Wide‐area‐signals‐based nonlinear excitation control in multi‐machine power systems

Liu

Chen

2018

IEEJ Transactions Elec Engng

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Recent studies have reported the capability of nonlinear excitation controllers in improving the dynamic performance of power systems. As each power plant is usually located at a distance from each other, local signals do not comprise enough content for damping inter‐area oscillations. Moreover, power system stability and terminal voltage regulation are both important properties in power system operation. Earlier control results apply a switching approach of two different kinds of controllers, leading to a discontinuity of the system behavior. This paper presents a wide‐area nonlinear excitation controller (WANEC) based on partial feedback linearizing for a multi‐machine power system to restrain oscillations and achieve the goal of voltage regulation. By selecting the appropriate wide‐area signal and the objective function of voltage regulation in the output function, the optimal control law is derived through partial linearization to complete the control design. The time‐domain simulation test on the IEEE 10‐machine 39‐bus system verify that the proposed controller can effectively damp the system oscillations after a large disturbance and give better performance in voltage regulation. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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“…Feed forward control strategies have been evolved for further improvement of the performance in wind power applications [16], which show improved performance to achieve the rated speed when the wind speed is above the rated value. In some cases, a cascaded PD-PI and conventional PID controller have been considered for analyzing the dynamic response of the two-area interconnected power system in which to achieve enhanced performance controllers that are efficiently tuned by the "teaching learning based optimization" technique and improved performance has been reported [17]. The solution to the multi-machine low frequency inter-area oscillation is given by presenting an algorithm based wide area power system stabilizer [18], an unwanted effect caused due to sampling of error signal on the performance of the PID controller is in [19].…”

Section: Introductionmentioning

confidence: 99%

Design of PID controller for automatic voltage regulator and validation using hardware in the loop technique

Sajnekar¹,

Kolhe²,

Deshpande³

et al. 2018

SGCE

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The digital excitation control system (DECS) used for brushless synchronous generators has recently become popular owing to its ease of operation and flexibility to manage the operating parameters to achieve good maintenance of the output terminal voltage at the rated value. The latest industrial digital automatic voltage regulator (AVR) is used in the forward path of DECS. This paper addresses the issues of the DECS that are responsible for deviating the terminal voltage from the rated value and consequently making the power system unstable. A solution to the issue is provided using a new method of tuning the PID controller that eases the impact of discretization on the terminal voltage and keeps the DECS compatible with industrial standards. The controller designed in this way will be useful to maintain the terminal voltage of the synchronous generator to enhance the stability of the power system to which many renewable energy sources are interconnected. The proposed method improves the performance of the excitation control system by reducing the overshoot from 75% to 16%. The simulation results are presented using an industrial standard model of the excitation control system to demonstrate and compare the performance of the existing with the new digital excitation system. The newly designed controller was tested and validated using the "hardware in the loop" (HITL) technique.

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Optimized design of wide-area PSS for damping of inter-area oscillations

Cited by 9 publications

References 14 publications

Optimum placement of PMU for wide area measurement systems

Optimum placement of PMU for wide area measurement systems

Wide‐area‐signals‐based nonlinear excitation control in multi‐machine power systems

Design of PID controller for automatic voltage regulator and validation using hardware in the loop technique

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