Coordinated SVC and AVR for robust voltage control in a hybrid wind-diesel system

Vachirasricirikul, Sitthidet; Ngamroo, Issarachai; Kaitwanidvilai, Somyot

doi:10.1016/j.enconman.2010.05.001

Cited by 49 publications

(26 citation statements)

References 13 publications

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“…The ΔQ N net surplus reactive power ,which due increase in electromagnetic energy absorption (Em) of the induction generator by dEm dt and increase in reactive load consumption, results in an increase of the system voltage, can be expanded as [4,8,11] = + ( )…”

Section: Voltage -Reactive Power Equationmentioning

confidence: 99%

“…Some good works have been reported, but, the parameters of the SVC/STATCOM controllers were optimized while controller parameters of automatic voltage regulator (AVR) of SG excitation control were fixed, hence cannot assure the efficient co-operative control. The work in [11] proposed voltage control of wind diesel hybrid power system based on H∞ loop shaping control of SVC and AVR with static load only. In their work, SVC and AVR controller gains were optimally tuned at the same time and performed agreeably.…”

Section: Introductionmentioning

confidence: 99%

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Optimal controllers design for voltage control in Off-grid hybrid power system

Anantwar¹,

Sundar²,

Laksmikantha³

2019

IJECE

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<p>Generally, for remote places extension of grid is uneconomical and difficult. Off-grid hybrid power systems (OGHPS) has renewable energy sources integrated with conventional sources. OGHPS is very significant as it is the only source of electric supply for remote areas. OGHPS under study has Induction generator (IG) for wind power generation, Photo-Voltaic source with inverter, Synchronous generator (SG) for Diesel Engine (DE) and load. Over-rated PV-inverter has capacity to supply reactive power. SG of DE has Automatic voltage regulator for excitation control to regulate terminal voltage. Load and IG demands reactive power, causes reactive power imbalance hence voltage fluctuations in OGHPS. To manage reactive power for voltage control, two control structures with Proportional–Integral controller(PI), to control inverter reactive power and SG excitation by automatic voltage regulator are incorporated. Improper tuning of controllers lead to oscillatory and sluggish response. Hence in this test system both controllers need to be tune optimally. This paper proposes novel intelligent computing algorithm , Enhanced Bacterial forging algorithm (EBFA) for optimal reactive power controller for voltage control in OGHPS. Small signal model of OGHPS with proposed controller is tested for different disturbances. simulation results are compared with conventional method , proved the effectiveness of EBFA.</p>

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Section: Voltage -Reactive Power Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal controllers design for voltage control in Off-grid hybrid power system

Anantwar¹,

Sundar²,

Laksmikantha³

2019

IJECE

View full text Add to dashboard Cite

show abstract

“…The , net surplus reactive power, which due increase in electromagnetic energy absorption (Em) of the induction generator by and the increase in reactive load consumption, results in increase of the system voltage, can be expanded as [4,8,9] = + ( )…”

Section: Voltage -Reactive Power Equation With Composite Load Ofmentioning

confidence: 99%

“…Some good works have been reported, but, the parameters of the SVC/STATCOM controllers were optimized while controller parameters of AVR of SG excitation loop were fixed, hence cannot assure the efficient co-operative control. The work in [9] proposed voltage control of wind diesel hybrid power system based on H∞ loop shaping control of SVC and AVR with static load only. In their work, SVC and AVR controller gains were optimally tuned at the same time and performed agreeably.…”

Section: Introductionmentioning

confidence: 99%

Optimized Controller Design Using an Adaptive Bacterial Foraging Algorithm for Voltage Control and Reactive Power Management in Off-Grid Hybrid Power System

Anantwar¹,

Lakshmikantha²,

Sundar³

2019

IJIGSP

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This paper investigates the application of adaptive Bacteria Forging Algorithm (BFA) to design optimal controllers for voltage stability of off-grid hybrid power system (OGHPS).Voltage fluctuations will have great impact on the quality of power supply. Voltage rise/drop depends on the surplus / shortage of reactive power in the system, hence it has become extremely important to manage the reactive power balance for voltage control in the off-grid hybrid power system. The off-grid hybrid power system considered in this work as a test system, consist of an Induction generator (IG) for wind power systems, Photo-Voltaic (PV) system with inverter, Synchronous generator (SG) for diesel power generation and composite load. The Overrated PV inverter has ample amount of reactive power capacity while sourcing PV real power. Two control structures are incorporated, to regulate system voltage. The first control structure is for the reactive power compensation of the system by inverter, by controlling the magnitude of inverter output voltage and the second control structure is for controlling the SG excitation by an automatic voltage regulator (AVR) and hence the load voltage. Both control structures have proportional-integral (PI) controller. Both control loops are coordinated by tuning their parameters optimally and simultaneously using an adaptive Bacterial forging optimization algorithm. Small signal model of all components of OGHPS is simulated in SIMULINK, tested for reactive load disturbance and /or wind power input disturbance of different magnitudes to investigate voltage stability.

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“…TKR'lerde tetikleme açısına göre süseptansının değişimi doğrusal olmayan bir karaktere sahip olduğundan geleneksel denetleyiciler reaktif gücün anlık değişimi için yeterli ölçüde başarı gösterememektedir. TKR'nin yüksek performanslı reaktif güç denetimi için birçok araştırmacı, model öngörülü denetim, bulanık mantık, yapay sinir ağları (YSA), genetik algoritma, kayan kipli denetim gibi çeşitli denetim stratejilerini önermiştir [6][7][8][9][10]. Özellikle sistem belirsizlikleri ve zamanla değişen sistem parametreleri dikkate alındığında denetimde daha iyi bir performans elde etmek için uyarlamalı denetleyicilere ihtiyaç duyulmaktadır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Tristör Kontrollü Reaktörün Sinirsel Bulanık Denetim Esaslı Reaktif Güç Kontrolü

Keçecioğlu

Kılıç

2019

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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In this study, the reactive power of thyristor controlled reactor (TCR) that is fundamental element of flexible ac transmission system devices is controlled using neuro-fuzzy controller. Adaptive neuro fuzzy inference system (ANFIS) is used as neuro-fuzzy control architecture. A simulation model was developed in MATLAB / Simulink environment to examine the performance of the proposed controller. Figure A. Proposed Method for Reactive Power Control of Thyristor Controlled Reactor Purpose: Conventional Proportional Integral (PI) controller is mostly used flexible AC transmission system (FACTS) devices. However, system parameter variations and non-linear system structures severely impair the performance of this controller. In this study, the neuro-fuzzy controller is used for overcome to these disadvantages. Theory and Methods: The neuro-fuzzy controller is designed for reactive power control of TCR. Adaptive neuro-fuzzy inference system (ANFIS) is used as neuro-fuzzy control architecture. In order to examine the performance of the proposed controller, two different cases are simulated in the studies. The reactive power control performance of the proposed controller is compared to two PI controllers. Results: Simulation results show that the tracking of the reference reactive power of proposed controller is more successfully than to PI controllers. The results that are obtained under the voltage disturbance condition show that, the neuro-fuzzy controller is better disturbance rejection capability than PI controllers. Conclusion: In this study, the neuro-fuzzy controller is used for reactive power control of TCR. The proposed controller for TCR is more superior than conventional PI controllers in terms of control performance parameters (rising time, settling time and overshoot) values. The proposed controller has improved the reactive power control capabilities of thyristor controlled reactor.

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Coordinated SVC and AVR for robust voltage control in a hybrid wind-diesel system

Cited by 49 publications

References 13 publications

Optimal controllers design for voltage control in Off-grid hybrid power system

Optimal controllers design for voltage control in Off-grid hybrid power system

Optimized Controller Design Using an Adaptive Bacterial Foraging Algorithm for Voltage Control and Reactive Power Management in Off-Grid Hybrid Power System

Tristör Kontrollü Reaktörün Sinirsel Bulanık Denetim Esaslı Reaktif Güç Kontrolü

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