Models of synchronous generators with excitation system, for transient power system studies

Øyvang, Thomas; Hegglid, Gunne John; Lie, Bernt

doi:10.1016/j.ifacol.2018.03.016

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…Villa-Acevedo et al [19] The use of a kernel extreme learning machine approach to monitor long-term voltage stability in power system areas. Øyvang et al [20] For transient power system research, models of synchronous generators with excitation systems.…”

Section: Grdenić Et Al [15]mentioning

confidence: 99%

“…To this end, the representation of the electromagnetic coupling of the two axes d and q by equivalent diagrams of inductors and resistances is of great interest for the analysis of the operation of the machine [4][5][6] and for the identification parameters [7,8]. Important studies have been done recently in the scope of improving stability in different modalities [9][10][11][12][13][14][15][16][17][18][19][20] as shown in Table 1.…”

Section: Introductionmentioning

confidence: 99%

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Energy Transfer from an Electrical Network-Connected Synchronous Machine

Sari-Ali¹,

Chikh-Bled²,

Ikumapayi³

et al. 2022

JESA

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Any alternating electric power supply is always characterized by three reference quantities, which are voltage, electric power and frequency. The generators of power stations are synchronous machines. The present work is based on the modelling of the synchronous machine for a study of the stability of the electricity transmission network. The example considered is a thermal power station of the national network. i.e., Algiers port power station. We have developed a computer program based on MATLAB to simulate the calculations of our multi-variable system. The study presented in this article examines the static stability of a thermal power plant. To make this study a reality, it is necessary to model the synchronous machine. We present the three models of the synchronous machine by emphasizing the role of the shock absorbers and the smoothness of the model with three windings. This work is supported by a spectral analysis based on the eigenvalues of the system.

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Section: Grdenić Et Al [15]mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Transfer from an Electrical Network-Connected Synchronous Machine

Sari-Ali¹,

Chikh-Bled²,

Ikumapayi³

et al. 2022

JESA

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“…The internal NMPC prediction model consists of a low order thermal model [28] combined with an electrical model. The electrical model is a single machine infinite bus model (SMIB) where the hydrogenerator is modeled as a salient pole 2.1 model [30] (e.g., salient pole rotor structure means that ψ 2q in Eq. 5 is neglected).…”

Section: B the Prediction Modelmentioning

confidence: 99%

Enhanced Power Capability of Generator Units for Increased Operational Security Using NMPC

Øyvang

Nøland

Sharma

et al. 2020

IEEE Trans. Power Syst.

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The ever-increasing penetration of intermittent energy sources introduces new demanding operating regimes for the bulk power generation in the power grid. During a worstcase power system disturbance scenario, the generator needs to operate beyond its limits to maintain stable operation. Therefore, a new online low-order thermal model of a hydrogenerator has been recently proposed, where the periodic extension of the long-forgotten capability diagram of the machine was in-depth investigated. An increased performance can be obtained if the total thermal capacity of the generator is exploited by applying optimal control theory in the Automatic Voltage Regulator (AVR). This paper proposes a Non-linear Model Predictive Controller (NMPC) combined with an Unscented Kalman Filter (UKF) with a modeling framework geared for use in a supervisory control structure for the conventional control system. The method provides maximum utilization of the machine's thermal capacity by providing the controller with an Enhanced Capability Diagram (ECD). Case studies on a single-machine system and a 16-bus multi-machine system were investigated. The results show that a satisfying controller action during different long-term voltage instability scenarios is realized.

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“…Comparative analysis of different classical tuning methods of PID controller has been discussed in [2,8]. Comparative analysis of different control strategy has been discussed in [9][10][11][12][13][14]. Different swarm optimization based tuning methods for PID controller have been discussed in control literature.…”

Section: Introductionmentioning

confidence: 99%

“…Excitation system and transient stability analysis of synchronous generator has been discussed in [8,12]. Loss of excitation in synchronous generator has been reported in [10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Control of Automatic Voltage Regulator Using Hybrid Optimization Techniques

Vamsi

Lavanya

Kumar

2022

Advances in Transdisciplinary Engineering

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The present work studies the modelling and PID controller tuning aspects of an automatic voltage regulator. The PID controller is tuned using a hybrid optimization algorithm. This paper tunes the controller using the BF-PSO hybrid optimization algorithm. Simulation results and comparative analysis have been provided to validate the algorithm. Time-domain as well as frequency domain analysis has been carried out. In order to keep the voltage at the terminals, the VAR has a fixed set of operational parameters. Different electrical devices will degrade significantly if the terminal voltage is too low or too high. AVRs, which are controlled by a computer, are a key component in power system operation and control. A controller is used by AVR to regulate the terminal voltage. AVR is controlled using a proportional-integral-derivative (PID) controller, one of the most common control systems. The AVR’s PID controller must be properly tuned in order for it to function properly. PID controller tuning approaches have been compared in a comparative analysis.

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Models of synchronous generators with excitation system, for transient power system studies

Cited by 5 publications

References 3 publications

Energy Transfer from an Electrical Network-Connected Synchronous Machine

Energy Transfer from an Electrical Network-Connected Synchronous Machine

Enhanced Power Capability of Generator Units for Increased Operational Security Using NMPC

Control of Automatic Voltage Regulator Using Hybrid Optimization Techniques

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