Designing Coordinated Power System Stabilizers: A Reference Model Based Controller Design

Yaghooti, Abdolazim; Buygi, Majid Oloomi; Shanechi, Mohamad Hassan Modir

doi:10.1109/tpwrs.2015.2466677

Cited by 28 publications

(18 citation statements)

References 23 publications

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“…The power system industry prefers the PSS in the form of a conventional lead‐lag compensator . A PSS with a single block of lead‐lag compensator as shown in Figure is considered here as

C_{PSS} = K_{PSS} ([], \frac{1 + s T_{1}}{1 + s T_{2}}) ([], \frac{s T_{w}}{1 + s T_{w}}) .

…”

Section: The Design Methodologymentioning

confidence: 99%

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A frequency domain model-based design of PSS and TCSC controller for damping the small signal oscillations in the power system

Salgotra

Pan

2018

Int Trans Electr Energ Syst

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Summary For improvement of the operation and control of the power system, the flexible AC transmission system devices are significantly used. This paper proposes a model‐based frequency response matching technique for designing a lead‐lag power system stabilizer and a thyristor controlled series capacitor controller to improve the small signal stability. The method relies on development of an appropriate reference model, based on the desired specifications that can be attainable by the system dynamics. The unknown controller parameters are obtained by the frequency response matching between the closed‐loop control system and the reference model. The efficacy of the proposed controllers is examined on an unstable test power system taken from the literature. Improvement of the damping factor and the other performance indices shows robustness and effectiveness of the proposed controllers for stabilizing the power system oscillations in comparison with some design methods prevalent in the literature. It is illustrated through rigorous simulation that the proposed controller works successfully for stabilizing the power system over a wide unstable operating conditions and perturbed system models.

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“…The power system industry prefers the PSS in the form of a conventional lead‐lag compensator . A PSS with a single block of lead‐lag compensator as shown in Figure is considered here as

C_{PSS} = K_{PSS} ([], \frac{1 + s T_{1}}{1 + s T_{2}}) ([], \frac{s T_{w}}{1 + s T_{w}}) .

…”

Section: The Design Methodologymentioning

confidence: 99%

“…Furthermore, many classical methods prevalent in the literature require reduction of the system model before designing the controllers. Recently, in the frequency domain, model matching techniques are adopted for the realization of proportional integral derivative (PID) controller and for the design of PSS in power system applications.…”

Section: Introductionmentioning

confidence: 99%

A frequency domain model-based design of PSS and TCSC controller for damping the small signal oscillations in the power system

Salgotra

Pan

2018

Int Trans Electr Energ Syst

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“…It is mainly because the amplitude-frequency characteristic will be affected little by the parameter variation but mostly influenced by the model structures (the practical PSS has a certain model structure) [7,10]. Limited by the unit security request and the calculation complexity constraint, no matter in the theory study [11,12] or the practical application [5,6,8,15], most optimization methods primarily focus on the parameter improvement of the phase shifters, while specific attention has been rarely paid to the DC blockers.…”

Section: Double Input Pssmentioning

confidence: 99%

“…Although scholars have also developed a new improved PSS model with the double-signal input to optimize the low-frequency and high-frequency features [7,10], the new model is still in the theory demonstration period and relatively lacks implement basis. To make an improvement, researchers presented parameter optimization methods for PSS4B and have verified the effectiveness by simulations and experiments [11][12][13]. However, since PSS4B is based on a parallel connected mode and is much more complex [7,13], it has not yet been widely used in the practical engineering.…”

Section: Introductionmentioning

confidence: 99%

A New Hybrid PSS Optimization Method Based on Improved Active Set Algorithm

Liu

Yao³

2018

Mathematical Problems in Engineering

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This paper proposes a new hybrid optimization method for the phase-frequency characteristics of the double input power system stabilizer (PSS) based on the improved active set algorithm. This method takes the effect of the filtering section optimization on the parameter improvement into account, and the optimized model focuses on the minimum residual sum of squares between the actual and the target phase-frequency characteristics. The result shows that the improved parameters obtained from the proposed method provide much better phase-frequency characteristics than the widely used engineering parameters. The comparison between the proposed method and the typical commercial software indicates the universal superiority of the proposed method. And the studies on the impact of considering the filter section optimization on the phase-frequency improvement show that taking the filter section optimization into account will be beneficial for the phase-frequency improvement, though in application to the PSS2A model and the PSS2B model there are some differences. The achievements obtained in this paper provide a significant reference for the practical PSS parameter modification and improvement.

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“…However, it is difficult for the PSS2B to meet the requirement of low-frequency gain because of its structure, which is limited by the critical gain of the high-frequency band. Although the latest proposed PSS4B introduces two variable inputs and multi-parallel branches to compensate for the drawback of the PSS2B, its phase relationships and parameter tuning are difficult to calculate [8][9][10], which leads to difficulties in engineering applications. Fortunately, the oscillation frequency of the local power system ranges from 0.2 Hz to 2 Hz with no ultra-low frequency, so the low-frequency oscillation of the full range can be effectively damped by PSS2B [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Model of Power System Stabilizer Adapting to Multi-Operating Conditions of Local Power Grid and Parameter Tuning

Hu¹,

Ji²,

Jin

et al. 2018

Sustainability

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Abstract:The rapid development of the modern power grid has resulted in significant changes to the dynamic characteristics of regional power grids. Moreover, the operating conditions of power grids are increasingly complex, and uncertainty factors are on the rise, which makes it difficult for a conventional power system stabilizer (PSS) to provide enough damping for the power system. To solve the problem where the conventional model and parameter-tuning method of a PSS cannot adapt to the multi-operating conditions of the modern power system, a new emergency control model of PSS (E-PSS) that can adapt to the multi-operating conditions of the local power grid and a method of parameter tuning based on probabilistic eigenvalue are proposed in this paper. An emergency control channel is also installed on the PSS2B. The conventional channel is used to control the system under normal operating conditions, which ensures that the system meets the conditions of dynamic stability in 99% of operating conditions, and the emergency control is adopted immediately in extreme conditions. Through the process of parameter tuning, the adaptability of the PSS to multi-operating conditions and damping coupling are both considered. Finally, it is verified that the emergency control model of the PSS and the parameter tuning method are effective and robust by a series of simulations based on MATLAB and its Power system analysis toolbox (PSAT). The rapidity of the emergency control can guarantee its effectiveness.

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Designing Coordinated Power System Stabilizers: A Reference Model Based Controller Design

Cited by 28 publications

References 23 publications

A frequency domain model-based design of PSS and TCSC controller for damping the small signal oscillations in the power system

A frequency domain model-based design of PSS and TCSC controller for damping the small signal oscillations in the power system

A New Hybrid PSS Optimization Method Based on Improved Active Set Algorithm

Model of Power System Stabilizer Adapting to Multi-Operating Conditions of Local Power Grid and Parameter Tuning

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