Harmonic resonance in power systems - a documented case

Eghtedarpour, Navid; Karimi, Mazaher; Tavakoli, Mohamad Reza

doi:10.1109/ichqp.2014.6842806

Cited by 18 publications

(7 citation statements)

References 10 publications

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“…Harmonic pollution often challenges the system operations by way of device maloperation, equipment overheating, resonance etc. Resonance investigation has been the commonest study relating to harmonic pollution in the literature [6], [7]. Such analysis is usually done using frequency or impedance scan in determining the resonant frequency.…”

Section: Nomenclature V Dcmentioning

confidence: 99%

Harmonic Domain Modeling of PV System for the Assessment of Grid Integration Impact

Nduka

Pal

2017

IEEE Trans. Sustain. Energy

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In this paper, a comprehensive harmonic domain reference frame (HDRF) model of a voltage source converter (VSC) grid interactive photovoltaic (PV) system is presented. The model is useful for assessing the harmonic coupling between the PV system and the network. Different components of the PV system such as inverter, LCL filter and interconnecting transformer have been incorporated in the model. Using this model, harmonic currents from PV system connected to both distorted and undistorted networks have been quantified. Also, the model has been deployed in investigating resonance occurrence in a medium-voltage distribution network (MVDN) where the results provide interesting technical insight and understanding.

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Section: Nomenclature V Dcmentioning

confidence: 99%

Harmonic Domain Modeling of PV System for the Assessment of Grid Integration Impact

Nduka

Pal

2017

IEEE Trans. Sustain. Energy

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“…Capacitor banks can be used to correct poor input power factor. As a results, power system inductances and capacitances may produce resonance with each other at certain frequencies, which is called resonance frequency [5]. Also, power cables add shunt capacitance to the grid which may increase the happening resonance probability [6].…”

Section: Introductionmentioning

confidence: 99%

Harmonics resonance elimination technique using active static compensation circuit

2021

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The existence of nonlinear loads produces high distortion and low power factor in the power system that leads to get poor power quality. Resonance problem is occurred due to the power system inductances and the compensation capacitors which increases the harmonic distortion. Therefore, it is necessary to prevent the action of resonance even if conventional or modern methods are built to improve the power system quality. In this paper, active static compensation circuit is proposed and designed to have the features of improving power factor, reducing THD, and eliminating the harmonics resonance effect at the same time with different linear and nonlinear load conditions. These features have been performed based on a modified pulse width modulation technique to drive and control the proposed circuit. The originality designed point of this technique is to have ability to operate the active static compensation circuit as harmonics injector, power factor corrector and resonance eliminator at the same time. Simulation model results illustrate that the proposed circuit is effective for both steady-state and transient operations conditions. The THD of the supply voltage and current at firing angle (α=300) is reduced by 99% and 98.8% respectively. While the power factor is improved to stay around unity.

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“…Harmonic resonance, which is always accompanied with heavy current and high voltage [1], is a main power quality issue in power grids. It may cause abnormal operation or even damage of power facilities [2][3][4][5][6], and further threatens normal and safe operation of power systems. Therefore, intense research to prevent and suppress harmonic resonance is needed.…”

Section: Introductionmentioning

confidence: 99%

Extended Gersgorin Theorem-Based Parameter Feasible Domain to Prevent Harmonic Resonance in Power Grid

Lin

Chen

et al. 2017

Energies

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Harmonic resonance may cause abnormal operation and even damage of power facilities, further threatening normal and safe operation of power systems. For renewable energy generations, controlled loads and parallel reactive power compensating equipment, their operating statuses can vary frequently. Therefore, the parameters of equivalent fundamental and harmonic admittance/impedance of these components exist in uncertainty, which will change the elements and eigenvalues of harmonic network admittance matrix. Consequently, harmonic resonance in power grid is becoming increasingly more complex. Hence, intense research about prevention and suppression of harmonic resonance, particularly the parameter feasible domain (PFD) which can keep away from harmonic resonance, are needed. For rapid online evaluation of PFD, a novel method without time-consuming pointwise precise eigenvalue computations is proposed. By analyzing the singularity of harmonic network admittance matrix, the explicit sufficient condition that the matrix elements should meet to prevent harmonic resonance is derived by the extended Gersgorin theorem. Further, via the non-uniqueness of similar transformation matrix (STM), a strategy to determine the appropriate STM is proposed to minimize the conservation of the obtained PFD. Eventually, the availability and advantages in computation efficiency and conservation of the method, are demonstrated through four different scale benchmarks.

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Harmonic resonance in power systems - a documented case

Cited by 18 publications

References 10 publications

Harmonic Domain Modeling of PV System for the Assessment of Grid Integration Impact

Harmonic Domain Modeling of PV System for the Assessment of Grid Integration Impact

Harmonics resonance elimination technique using active static compensation circuit

Extended Gersgorin Theorem-Based Parameter Feasible Domain to Prevent Harmonic Resonance in Power Grid

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