A new method of harmonic power detection based on the instantaneous active power in three-phase circuits

Tanaka, Toshihiko; Akagi, Hirofumi

doi:10.1109/61.473386

Cited by 102 publications

(40 citation statements)

References 2 publications

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“…Given the harmonic voltage and current at a given frequency, in accordance with [4], the harmonic power flow approach based on the individual values of ܲ establishes that • The fundamental harmonic power, once calculated, will have either a positive or a negative sign. In the absence of consumer internal generation, this power is always taken as being positive.…”

Section: The Harmonic Power Flow Method: Definition and Analysismentioning

confidence: 99%

“…However, it does not provide the means to share the responsibility between the supplier and the consumer. Therefore, this strategy can be considered as only a first step toward the identification of the total harmonic distortion responsibility, and its fundamentals have been fully described by many publications [4,5,6]. Based on these assumptions, several commercially-available power quality meters have the ability to measure individual voltage and current distortions and provide total values for these variables, and, in addition to these features, the majority of these devices provide the required harmonic power for each specific harmonic order.…”

Section: Introductionmentioning

confidence: 99%

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Critical analysis of the harmonic power flow method to determine the dominant distortion source

Santos

Oliveira

Silva

2011

XI Brazilian Power Electronics Conference

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Concerning harmonic distortions, in addition to traditional matters such as limits, measurements, effects, and others, the importance of establishing ways to determine the responsibility for possible violations of given limits emerges an important challenge. This subject has been considered by researchers and amongst some proposals, one of the most known methodologies for identification of the major source of harmonics consists in determining the direction of harmonic power flow by comparing the fundamental and harmonic power signals. This attempt has been supported by the fact that commercial power quality measurement equipment has the ability to quantify fundamental and individual harmonic powers. Focusing this approach, this paper is aimed at describing the theoretical fundamentals to the method, as well as to present and discuss computational and experimental studies performed for a hypothetical electrical arrangement. The final results are then used to demonstrate the method weakness to fulfill the established needs.Keywords -Harmonic distortion, harmonic power approach, harmonic source detection, power quality and sharing harmonic responsibilities.

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Section: The Harmonic Power Flow Method: Definition and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Critical analysis of the harmonic power flow method to determine the dominant distortion source

Santos

Oliveira

Silva

2011

XI Brazilian Power Electronics Conference

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“…Several methodologies for detecting harmonic sources have been applied to calculate the harmonic contributions at the point of common coupling. The most common tool to solve this problem is the harmonic power direction-based method [36][37][38] in which the symmetrical balanced or unbalanced and symmetrical three-phase harmonic power flows are detected. Another group of practical methods for harmonic source detection is to measure the utility and customer harmonic impedances and then calculate the harmonic sources behind the impedances.…”

Section: Harmonic Sources and Its Identificationmentioning

confidence: 99%

Power system harmonics research: a survey

Singh

2007

Int Trans Elec Energy Syst

152

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SUMMARYThe increased use of power electronic controlled equipment, such as variable speed drives, automated production lines, personal computers and non-linear electronic devices in power systems has given rise to a type of voltage and current waveform distortion called as 'harmonics'. Harmonic can be defined as the undesirable components of a distorted periodic waveform whose frequencies are the integer multiples (non-integer multiples in case of inter-harmonics, and the frequency less than fundamental frequency in case of sub-harmonics) of the fundamental frequency. Presence of these harmonics results in increased losses, equipment heating and loss-of-life, and interference with protection, control and communication circuits as well as customer loads. The research has been underway since very beginning for control of power system harmonics and to supply consumers with reliable and 'clean' fundamental-frequency sinusoidal electric power that does not represent a damaging threat to their equipment. This paper, therefore, reviews the progress made in power system harmonics research and development since its inception. Attempts are also made to highlight the current and future issues involved in the development of quality and reliable electric power technology for future applications. A list of 145 research publications on the subject is also appended for a quick reference.

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“…Then many algorithms are available to detect harmonic currents and generate the reference signal for the APF. Conventional detecting methods for harmonic currents include the digital low-pass or high-pass filters, the Fast Fourier Transform (FFT) [2] and the method based on instantaneous reactive power theory [3]. However they all have some limitations.…”

Section: Harmonic Currents For Active Power Filtermentioning

confidence: 99%

A Fuzzy Adaptive Detecting Approach of Harmonic Currents for Active Power Filter

Tan

Yang

2007

2007 7th International Conference on Power Electronics and Drive Systems

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Successful control of active power filter requires an accurate current reference. Base on adaptive interference canceling theory, this paper presents an adaptive least mean squares (LMS) algorithm employing fuzzy step size for the fast estimation of harmonic current signals in power networks. The learning parameter of the proposed algorithm is constrained by two variable parameters. By using a fuzzy logic based step size update method which causes an automatic suitable adjustment of the step size, the present method can provide fast convergence and noise rejection for the tracking of fundamental and harmonic components from distorted signals. The results of computer simulations and physical experiments have proved the proposed algorithm is practicable.Index Terms--Active power filter, harmonic current detection, adaptive filter, fuzzy rule based

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A new method of harmonic power detection based on the instantaneous active power in three-phase circuits

Cited by 102 publications

References 2 publications

Critical analysis of the harmonic power flow method to determine the dominant distortion source

Critical analysis of the harmonic power flow method to determine the dominant distortion source

Power system harmonics research: a survey

A Fuzzy Adaptive Detecting Approach of Harmonic Currents for Active Power Filter

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