Network resonance detection using harmonic active power

Bottenberg, Agknaton; Debruyne, Colin; Peterson, Brandon; Rens, Johan; Knockaert, Jos; Desmet, Jan

doi:10.1109/ichqp.2018.8378871

Cited by 8 publications

(6 citation statements)

References 6 publications

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“…From a harmonic power flow point of view this is equivalent to a cancellation of the harmonic reactive power term Q h at the said resonance frequency, maximizing the harmonic active power fraction. Remember that the term "harmonic reactive power" results from the direct multiplication of voltage and current phasors at the same frequency, neglecting distortion power terms resulting from mixed multiplication of voltage and current phasors at different frequencies [35,36]. It is not meant by this that the active power term P h is maximum overall, but its fraction taken with respect to the total harmonic apparent power A h = √ (P h 2 +Q h 2 ) (namely the harmonic displacement factor d h = P h /A h ) is.…”

Section: Resonance Conditionsmentioning

confidence: 99%

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Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities

Mariscotti

Sandrolini

2021

Energies

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Harmonic resonances are part of the power quality (PQ) problems of electrified railways and have serious consequences for the continuity of service and integrity of components in terms of overvoltage stress. The interaction between traction power stations (TPSs) and trains that causes line resonances is briefly reviewed, showing the dependence on infrastructure conditions. The objective is monitoring of resonance conditions at the onboard pantograph interface, which is new with respect to the approaches proposed in the literature and is equally applicable to TPS terminals. Voltage and current spectra, and derived impedance and power spectra, are analyzed, proposing a compact and efficient method based on short-time Fourier transform that is suitable for real-time implementation, possibly with the hardware available onboard for energy metering and harmonic interference monitoring. The methods are tested by sweeping long recordings taken at some European railways, covering cases of longer and shorter supply sections, with a range of resonance frequencies of about one decade. They give insight into the spectral behavior of resonances, their dependency on position and change over time, and the criteria needed to recognize genuine infrastructure resonances from rolling stock emissions.

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Section: Resonance Conditionsmentioning

confidence: 99%

“…At resonance, inductive and capacitive terms compensate, leaving a line impedance with resistive behavior [35,36]. The resistive term should then be determined quite accurately, and the skin effect should be taken into account for a correct estimate of damping and height of the impedance peaks.…”

mentioning

confidence: 99%

Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities

Mariscotti

Sandrolini

2021

Energies

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“…From a harmonic power flow point of view this is equivalent to a cancellation of the harmonic reactive power term Qh at the said resonance frequency, maximizing the harmonic active power fraction. It is just remembered that the term "harmonic reactive power" results from the direct multiplication of voltage and current phasors at the same frequency, neglecting distortion power terms resulting from mixed multiplication of voltage and current phasors at different frequencies [35,36]. Then it is not meant that the active power term Ph is maximum overall, but its fraction taken with respect to the total harmonic apparent power Ah = (Ph 2 +Qh 2 ) (namely the harmonic displacement factor dh = Ph/Ah) is.…”

Section: Resonance Conditionsmentioning

confidence: 99%

“…nance inductive and capacitive terms compensate, leaving a line impedance with resistive behavior [35,36]. The resistive term should be then determined quite accurately, and skin effect should be taken into account for a correct estimate of damping and height of the impedance peaks.…”

mentioning

confidence: 99%

Detection of Harmonic Overvoltage and Resonance in AC Railways using Measured Pantograph Electrical Quantities

Mariscotti¹,

Sandrolini²

2021

Preprint

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Harmonic resonances are part of the Power Quality (PQ) problems of electrified railways and have serious consequences for the continuity of service and integrity of components in terms of overvoltage stress. The interaction between Traction Power Stations (TPSs) and trains that causes line resonances is briefly reviewed showing the dependence on infrastructure conditions. The objective is real-time monitoring of resonance conditions seen first of all from the onboard panto-graph interface, but it is equally applicable at TPS terminals. Voltage and current spectra, and de-rived impedance and power spectra, are analyzed proposing compact and efficient methods based on Short-Time Fourier Transform, suitable for real-time implementation with the hardware avail-able for energy metering and harmonic interference monitoring. The methods are tested by sweeping long recordings taken at some European railways, covering cases of longer and shorter supply sections, with a range of resonance frequencies of about one decade. They give insight into the spectral behavior of resonances, their dependency on position and change over time, and criteria to recognize genuine infrastructure resonances from rolling stock emissions.

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“…Resonance modes at harmonics frequencies in power grids have been [1][2][3][4][5] and remain a big challenge [6][7][8][9][10]. They occur due to availability of equipment with capacitance and reactive elements [11,12].…”

Section: Introductionmentioning

confidence: 99%

Resonance Modes at Harmonics Frequencies in Electrical Networks

Коверникова¹

2020

E3S Web Conf.

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Resonance modes at harmonic frequencies in electrical networks are a serious problem. They arise due to the availability of electrical equipment with capacitive and inductive elements. The values of the harmonics of currents and voltages increase at resonances. The voltage quality indices in resonant modes exceed the limit values. Harmonics cause energy losses in electrical equipment, reduce its service life, create economic damage. Capacitor banks are often damaged by resonances. Network nodes with resonant circuits and resonant harmonics can be determined using the frequency characteristics of the nodal reactance (susceptance). The paper presents an algorithm and HARMONICS software for the analysis and forecasting of resonance modes, the results of studies of resonance modes in the high-voltage networks of Eastern Siberia.

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Network resonance detection using harmonic active power

Cited by 8 publications

References 6 publications

Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities

Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities

Detection of Harmonic Overvoltage and Resonance in AC Railways using Measured Pantograph Electrical Quantities

Resonance Modes at Harmonics Frequencies in Electrical Networks

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