What is it about?

Voltage and current harmonic distortion responsibilities of a network and customer are determined by an improved harmonic current vector method. In order to determine the current and voltage contributions to the PCC, Norton and Thevenin equivalent circuits of the network and customer have been used with an algorithm. The proposed algorithm is verified in MATLAB by processing of the measurements. After the processing of the data collected from the PCC for a long-time period, the responsibility of the customer and the network at the PCC and current and voltage THD values have been obtained.

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Why is it important?

According to the analysis results of test system, it is determined that overall responsibilities in the current and voltage waveform distortion at the PCC only belong to the customer. Therefore, penalty sanctions should be imposed to the customer in the amount of it exceeds allowable limits. To be able to reduce to impact of the harmonics to the minimum and determine the harmonic contribution rates accurately and also determine the share of responsibility, some of the arrangements can be made as follows: ● The necessary arrangements about the harmonic contribution of the network and the customer should be performed and determined financial penalties should be applied when related limits given in the standards were exceeded. ● To take into account the average values instead of instantaneous values will be satisfy in terms of feasibility and justice while calculating the effect of the network’s and the customer’s harmonic distortion. ● Variable load condition should be taken into account in order to obtain more accurate results. Constantly changing load and also switching positions of the harmonic filters and compensator capacitors have been already taken into account because of the calculated load impedance by using the voltage and current data updated constantly during the measurement period.

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This page is a summary of: Harmonic Contributions of Utility and Customer Based on Load Model Using Field Measurements, Journal of Power and Energy Engineering, January 2015, Scientific Research Publishing, Inc,,
DOI: 10.4236/jpee.2015.35002.
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