Methods for electric power measurements

Munday, Max; Hart, D.G.

doi:10.1109/pess.2002.1043677

Cited by 9 publications

(7 citation statements)

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“…As stated by IEEE standard [14], in the electrical circuit with the linear load, a sinusoidal voltage source is the angular frequency, T is the cycling period of v , θ is the phase angle between the voltage v and the current i waveforms. An instantaneous power in such electrical circuit is given by [5], [6], [14] [ ] Time representation of the right side terms of (1), which comprises both the constant and the cycling portions of instantaneous power, is shown in Fig.1.…”

Section: A Instantaneous Power In the Linear Electrical Circuits Witmentioning

confidence: 99%

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A New Signal Processing based Method for Reactive Power Measurements

Abiyev¹

2009

JCP

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A new modified Walsh function (WF) based method for the measurement of reactive power (RP) under both sinusoidal and non-sinusoidal conditions is proposed and investigated. Proposed method simplifies the multiplication procedure to evaluate the reactive components from instantaneous power signal using peculiar properties of the WF. One of the advantages of proposed measurement approach is that in contrast to the known existing methods which involve phase shift operation of the input signal, the proposed technique does not require the time delay of the current signal to the 2 / π with respect to the voltage signal. Another advantage is related to the computational saving properties of the proposed approach coming from use of the Walsh Transform (WT) based signal processing method. Proposed method eliminates an influence of the prevalent third order current harmonic to and reduces the effect of the highest order current harmonics on the RP measurement results. The examples are used to illustrate validity and effectiveness of the suggested method for evaluation of the RP. A new method has been tested by use of a simulation tools developed on the base of “Matlab”.

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Section: A Instantaneous Power In the Linear Electrical Circuits Witmentioning

confidence: 99%

“…In [6] different RP measurement methods are described. The common drawback of the described methods is related to the necessity of measuring of the RMS values of the voltage and current.…”

Section: Introductionmentioning

confidence: 99%

A New Signal Processing based Method for Reactive Power Measurements

Abiyev¹

2009

JCP

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“…If the source voltage ) (t u and the current ) (t i flowing through the load are the pure sinusoidal signals, the instantaneous power ) (t p is given by [5], [6] [ ]…”

Section: Voltage and Current Signals Are Pure Sinusoidalmentioning

confidence: 99%

A new signal processing technique for evaluation of the reactive power in the power transmission and distribution systems

Abiyev

2008

IEEE SoutheastCon 2008

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This paper presents a new modified Walsh function (WF) based method for the measurement of reactive power (RP) in sinusoidal as well as in noise conditions. Proposed method simplifies the multiplication procedure to evaluate the reactive components from instantaneous power signal using peculiar properties of the WF. One of the advantages of proposed measurement approach is that in contrast to the known existing methods which involve phase shift operation of the input signal, the proposed technique does not require the time delay of the current signal to the 2 / π with respect to the voltage signal. Another advantage is related to the computational saving properties of the proposed approach coming from use of the Walsh Transform (WT) based signal processing method. Proposed method eliminates an influence of the prevalent third order current harmonic to and reduces the effect of the highest order current harmonics on the RP measurement results. Validity and effectiveness of the suggested method for evaluation of the RP components of the electrical power have been tested by use of a simulation tools developed on the base of "Matlab".

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“…A new application of the least error squares estimation algorithm for identifying the reactive power from available samples of voltage and current waveforms in the time domain for sinusoidal and non sinusoidal signals is proposed in [8]. In [9] different RP measurement methods are described. The common drawback of the described methods is related to the necessity of measuring of the RMS values of the voltage and current.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Reactive Power in Three-Phase Electric Power Systems by Use of Walsh Functions

Abiyev¹

2010

JCP

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Methods for electric power measurements

Cited by 9 publications

References 0 publications

A New Signal Processing based Method for Reactive Power Measurements

A New Signal Processing based Method for Reactive Power Measurements

A new signal processing technique for evaluation of the reactive power in the power transmission and distribution systems

Measurement of Reactive Power in Three-Phase Electric Power Systems by Use of Walsh Functions

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