Journal ArticleDOI
Effect of TCPS on oscillations in tie-power and area frequencies in an interconnected hydrothermal power system
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TLDR
In this paper, the phase angle of the phase shifter is controlled to damp the system frequency and tie-power oscillations by controlling phase angle at the tie-line to provide active control of system frequency.Abstract:
The analysis of automatic generation control of a two-area interconnected hydrothermal power system considering a thyristor-controlled phase shifter (TCPS) in series with the tie-line is presented. It is possible to damp the system frequency and tie-power oscillations by controlling the phase angle of TCPS. A control strategy using TCPS is proposed to provide active control of system frequency. Gain settings of the integral controllers with and without considering TCPS are optimised using integral squared error technique following a step load disturbance in each of the areas by minimising a quadratic performance index. Analysis reveals that a TCPS is quite capable of suppressing the frequency and tie-power oscillations effectively under the occurrence of sudden load changes in any of the areas when compared with that obtained without TCPS.read more
Citations
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Journal ArticleDOI
Teaching-learning based optimization algorithm based fuzzy-PID controller for automatic generation control of multi-area power system
TL;DR: It is observed that TLBO optimized fuzzy-PID controller gives better dynamic performance in terms of settling time, overshoot and undershoot in frequency and tie-line power deviation as compared to LCOA, GA, PS and SA based PID controllers.
Journal ArticleDOI
Hybrid differential evolution particle swarm optimisation optimised fuzzy proportional–integral derivative controller for automatic generation control of interconnected power system
TL;DR: It is observed that the optimum gains of the proposed fuzzy PID controller need not be reset even if the system is subjected to variation in loading condition and system parameters, and the superiority of hybrid DEPSO algorithm over differential evolution and particle swarm optimisation algorithm has been demonstrated.
Journal ArticleDOI
Load Frequency Control of Power Systems With Electric Vehicles and Diverse Transmission Links Using Distributed Functional Observers
TL;DR: A load frequency control scheme using electric vehicles (EVs) to help thermal turbine units to provide the stability fluctuated by load demands and can cope better against accidental failures than those CO-based controllers.
Journal ArticleDOI
Supervisory predictive control of power system load frequency control
M. Shiroei,Ali Mohammad Ranjbar +1 more
TL;DR: In this paper, a hierarchical two-level power system load frequency control is proposed, where at the button level, standard PI controllers are utilized to control area's frequency and tie-line power interchanges.
Journal ArticleDOI
Automatic generation control of TCPS based hydrothermal system under open market scenario: A fuzzy logic approach
TL;DR: In this article, the authors presented the analysis of automatic generation control of a two-area interconnected thyristor controlled phase shifter based hydrothermal system in the continuous mode using fuzzy logic controller under open market scenario.
References
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MonographDOI
Flexible AC Transmission Systems (FACTS)
Yonghua Song,A. T. Johns +1 more
TL;DR: In this paper, a unified power flow controller is proposed for EHV transmission lines with FACTS devices, and a phase shifter is used to phase shift the phase shifters.
Journal ArticleDOI
Optimum Megawatt-Frequency Control of Multiarea Electric Energy Systems
Olle I. Elgerd,Charles E. Fosha +1 more
TL;DR: In this article, the authors question seriously the basis for this practice and prove by the methods of optimum control that better response and wider stability margins can be obtained by lower bias settings.
Book
Robust Control in Power Systems
Bikash C. Pal,Balarko Chaudhuri +1 more
TL;DR: In this article, the authors proposed a mixed sensitivity approach using Linear Matrix Inequalities (LMIIN) for loop-shaping in power systems. And they also proposed a control for time-delayed systems.
Journal ArticleDOI
Understanding automatic generation control
TL;DR: In this paper, the authors describe what automatic generation control (AGC) might be expected to do, and what may not be possible or expedient for it to do; the purposes and objectives of AGC are limited by physical elements involved in the process and the relevant characteristics of these elements are described.
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