On Harmonic State Estimation of Power System With Uncertain Network Parameters

Rakpenthai, Chawasak; Uatrongjit, Sermsak; Watson, N.R.; Premrudeepreechacharn, S.

doi:10.1109/tpwrs.2013.2273943

Cited by 51 publications

(24 citation statements)

References 36 publications

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“…Nonlinear electric appliances, which rely on power electronic switches, are widely used in the domestic and industrial utilization of every utility throughout the world [1,2]. The presence of nonlinear loads, such as personal computers, variable frequency drives (VFDs) and arc furnaces, gives rise to power quality problems, e.g., harmonic distortion, voltage fluctuation and noise [3][4][5]. Harmonic distortion in low-voltage distribution systems is responsible for power losses, electric devices heating, insulation failures, interference issues in communication systems and in the worst cases, electric power system failure [6,7].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of a PI Controlled Shunt Active Power Filter for Power Quality Enhancement Based on P-Q Theory

2020

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The design of reliable power filters that mitigate current and voltage harmonics to meet the power quality requirements of the utility grid is a major requirement of present-day power systems. In this paper, a detailed systematic approach to design a shunt active power filter (SAPF) for power quality enhancement is discussed. A proportional–integral (PI) controller is adopted to regulate the DC-link voltage. The instantaneous reactive power theory is employed for the reference current’s extraction. Hysteresis current control is used to obtain the gate pulses that control the voltage source inverter (VSI) switches. The detailed SAPF is developed and simulated for balanced nonlinear loads and unbalanced nonlinear loads using MATLAB/Simulink. The simulation results indicate that the proposed filter can minimize the harmonic distortion to a level below that deployed by the Institute of Electrical and Electronics Engineers (IEEE) standards.

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Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of a PI Controlled Shunt Active Power Filter for Power Quality Enhancement Based on P-Q Theory

2020

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“…In this context, several papers presented in the literature have been focused on the evaluation of the harmonic pollution through the grid, applying Harmonic State Estimation methodologies (see for example [7]- [9]). These techniques, mostly derived from classic State Estimation methods originally designed for transmission systems, require a significant quantity of information, such as measured data, network topology and network parameters, to obtain an accurate evaluation of the quantities of interest.…”

Section: Introductionmentioning

confidence: 99%

Identification and Estimation of Harmonic Sources Based on Compressive Sensing

Carta

Muscas

Sulis

2019

IEEE Trans. Instrum. Meas.

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Nodes in electric distribution networks are greatly differentiated and are very often nonlinear and/or unbalanced. They can create significant harmonic pollution, with harmonics that inevitably spread along the grid. Monitoring harmonic propagation and correlated power quality phenomena requires specific measurement devices and methodologies. Nevertheless, because of the unavailability of a rapid diffusion of synchronized and dedicated devices (due to technical and economic reasons) on every node and branch of the network, estimating the harmonic status of the entire grid by means of a complete or even redundant monitoring system can be practically unfeasible. A more feasible, though always meaningful, goal can thus be pursued, that is estimating the main harmonic sources in the network, rather than its complete harmonic status. This approach, of course, can be based on a simpler and cheaper upgrade of the distributed monitoring system. Even more, by considering the common scenario where the number of significant harmonic sources is lower than the number of loads connected to the grid, specific estimation procedures can be defined to further reduce the complexity of the monitoring system. In this scenario, this paper presents an efficient Compressive Sensing Harmonics Detector (CSHD) for the identification and the estimation of the principal pollution sources. The proposed CSHD method is validated by means of appropriate tests performed on an example of distribution grid.

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“…Nowadays, with the utilization and popularization of renewable energy, including wind power, solar photovoltaic power, and electric vehicles, new harmonic sources have emerged in modern grids. Therefore, a great many harmonics are generated and injected into the power grid, deteriorating the power quality and bringing great harm to the equipment and grid [1,2]. Therefore, he harmonic elimination has been of extensive concern and investigated.…”

Section: Introductionmentioning

confidence: 99%

A Simplified Minimum DC-Link Voltage Control Strategy for Shunt Active Power Filters

Wang

Chen

et al. 2018

Energies

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The active power filter (APF) is a popular electrical device to eliminate harmonics in power systems. The rational design and effective control of DC-link capacitor voltage are important for implementing APF functions. In this study, the influences from the DC-link voltage on the APF compensating current characteristic and compensation performance are analyzed, and the reason to maintain DC-link voltage at a minimum value is investigated. On this basis, a simplified minimum DC-link voltage control strategy for APF is proposed. Compared with the existing DC-link voltage control strategies, the minimum DC-link voltage value in proposed strategy is only determined by the grid voltage and modulation ratio, reducing the calculation burden and the implementation difficulty in application, avoiding the interference from external parameters on the compensation effect. Additionally, the reference DC-link voltage varies at different values according to the grid voltage and modulation ratio. A shunt APF prototype is established and the experimental results verify the correctness and effectiveness of the analysis and proposed strategy.

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On Harmonic State Estimation of Power System With Uncertain Network Parameters

Cited by 51 publications

References 36 publications

Modeling and Simulation of a PI Controlled Shunt Active Power Filter for Power Quality Enhancement Based on P-Q Theory

Modeling and Simulation of a PI Controlled Shunt Active Power Filter for Power Quality Enhancement Based on P-Q Theory

Identification and Estimation of Harmonic Sources Based on Compressive Sensing

A Simplified Minimum DC-Link Voltage Control Strategy for Shunt Active Power Filters

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