HVDC's increasing popularity

Breuer, G. D.; Hauth, R. L.

doi:10.1109/45.1901

Cited by 14 publications

(3 citation statements)

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“…The land coverage and the associated right-of-way cost for a HYDC overhead transmission line is not as high as that of an AC line [40]- [41]. This reduces the visual impact and saves land compensation for new projects.…”

Section: ) Environmental1ssuesmentioning

confidence: 91%

High voltage direct current transmission - A review, part I

Okba

Saied²,

Mostafa

et al. 2012

2012 IEEE Energytech

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Section: ) Environmental1ssuesmentioning

confidence: 91%

High voltage direct current transmission - A review, part I

Okba

Saied²,

Mostafa

et al. 2012

2012 IEEE Energytech

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“…However, there has been a tremendous growth of the HVDC transmission system due to economic, environmental and performance advantages over the other alternatives. Hence, it has been applied widely in operating a dc link in parallel with an ac link (Padiyar, 1990;Brecur and Hanth, 1988;Nasser and Vanslcky, 1995;Ganapathy and Velusami, 2010) interconnecting control areas to get an improved system dynamic performance with greater stability margins under small disturbances in the system (Kumar and Ibraheem, 2004). Only scantily information is available on LFC of interconnected power systems connected via HVDC link in parallel with ac link.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Performance Evaluation of Decentralized Load Frequency Controllers for Interconnected Thermal Power System with Parallel AC-DC Tie-lines: A Comparative Study

Selvakumaran¹,

Rajasekaran²,

Karthigaivel³

2014

RJASET

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The main objective of Load Frequency Control (LFC) is to balance the total system generation against system load losses so that the desired frequency and power interchange with neighboring systems are maintained. Any mismatch between generation and demand causes the system frequency to deviate from its nominal value. Thus high frequency deviation may lead to system collapse. This necessitates a very fast and accurate controller to maintain the nominal system frequency. This study presents an analysis on dynamic performance of two-area thermal power system interconnected via parallel AC-DC tie-lines when subjected to load disturbances. The dc link is used as system interconnection in parallel with ac tie-line. The dc link is considered to be operating in constant current control mode and the power flow deviation through dc link is modeled based on frequency deviation at rectifier end. This study also deals with the application of various controllers namely Proportional plus Integral (PI) Controller, Dual Mode Controller, Fuzzy Logic Controller and Particle Swarm Optimization (PSO) tuned PI Controller for load frequency control of an interconnected power system with AC-DC tie-lines. The above controllers are simulated using MATLAB and their performance is analyzed. Outcome of the analysis shows the superiority of PSO tuned PI Controller over the other control methods.

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“…There has been a tremendous growth of the HVDC transmission system due to economics of power transmission, technical performance and reliability. Hence, it has been applied widely in operating a DC link in parallel with an AC link [2][3][4][5] interconnecting control areas to get an improved system dynamic performance with greater stability margins under small disturbances in the system [6]. Only scantily information is available on LFC of interconnected power systems connected via HVDC link in parallel with ac link.…”

Section: Introductionmentioning

confidence: 99%

Genetic algorithm tuned IP controller for Load Frequency Control of interconnected power systems with HVDC links

Selvakumaran¹,

Rajasekaran²,

Karthigaivel³

2014

Archives of Electrical Engineering

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Abstract:A new design of decentralized Load Frequency Controller for interconnected thermal non-reheat power systems with AC-DC parallel tie-lines based on Genetic Algorithm (GA) tuned Integral and Proportional (IP) controller is proposed in this paper. A HVDC link is connected in parallel with an existing AC tie-line to stabilize the frequency oscillations of the AC tie-line system. Any optimum controller selected for load frequency control of interconnected power systems should not only stabilize the power system but also reduce the system frequency and tie line power oscillations and settling time of the output responses. In practice Load Frequency Control (LFC) systems use simple Proportional Integral (PI) or Integral (I) controller. The controller parameters are usually tuned based on classical or trial-and-error approaches. But they are incapable of obtaining good dynamic performance for various load change scenarios in multi-area power system. For this reason, in this paper GA tuned IP controller is used. A two area interconnected thermal non-reheat power system is considered to demonstrate the validity of the proposed controller. The simulation results show that the proposed controller provides better dynamic responses with minimal frequency and tie-line power deviations, quick settling time and guarantees closed-loop stability margin.

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HVDC's increasing popularity

Cited by 14 publications

References 0 publications

High voltage direct current transmission - A review, part I

High voltage direct current transmission - A review, part I

Dynamic Performance Evaluation of Decentralized Load Frequency Controllers for Interconnected Thermal Power System with Parallel AC-DC Tie-lines: A Comparative Study

Genetic algorithm tuned IP controller for Load Frequency Control of interconnected power systems with HVDC links

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