Measurement of power effects caused by the deterioration of the neutral conductor in three-phase distribution networks

López, Elisa Peñalvo; Vinet, Amparo León; Martínez, Vicente León; Montañana-Romeu, Joaquín; Salazar, Iván Valencia

doi:10.1016/j.epsr.2022.109014

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Ketidakseimbangan pembebanan yang terjadi mengakibatkan munculnya arus di konduktor penghantar netral [13]. Besaran nilai dari arus netral dapat mengukur dampak yang terjadi pada jaringan distribusi [14]. Ketidakseimbangan beban ini menyebabkan serangkaian kerugian salah satunya rugirugi daya, sehingga perlunya penanganan terhadap ketidakseimbangan beban pada transformator distribusi [15].…”

Section: Pendahuluanunclassified

Evaluasi Ketidakseimbangan Beban pada GTT 20kV terhadap Arus Netral dan Rugi Daya

Wicaksono,

Wrahatnolo

2023

JJEEE

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Batas ketidakseimbangan pembebanan pada Sistem Distribusi Tenaga Listrik ditetapkan yakni antara 5 – 20 % terhadap beban per fasa. Hal ini terjadi akibat pertumbuhan beban yang tidak merata sehingga menyebabkan ketimpangan antara masing – masing fasa. Persentase ketidakseimbangan beban ini berpengaruh terhadap besarnya nilai arus yang mengalir pada penghantar netral. Sehingga netral tersebut dapat menyebabkan rugi - rugi daya pada transformator distribusi. Penelitian ini yang dilakukan pada penyulang plumbungan diantaranya transformator distribusi RB877 memiliki persentase 64,1% dan RB876 memiliki persentase 21% terhadap ketidakseimbangan beban. Sehingga persentase tersebut diluar batas yang telah ditetapkan oleh standar. Dalam hal ini, penelitian dilakukan dalam rangka meperbaiki rugi – rugi daya yang timbul pada transformator distribusi RB877 sebesar 0,214 kW dan RB876 sebesar 0,025 kW dengan melakukan penyeimbangan beban terhadap masing – masing fasa. Simulasi Aliran Daya Tak Seimbang pada ETAP 19.0 digunakan dalam menyelesaikan masalah dalam penelitian ini. Berdasarkan hasil simulasi, persentase ketidakseimbangan beban transfomator distribusi RB877 menjadi 1,16% dan RB 876 menjadi 4,2%. Penyeimbangan yang dilakukan dengan membagi ketimpangan yang terjadi pada fasa yang memiliki kapasitas lebih besar ke yang lebih kecil mengakibatkan penurunan pada arus netral yang semula pada transformator distribusi RB877 sebesar 25,05 A menjadi 1,8 A dan pada RB876 yang semula 8,77 A menjadi 0,8 A. Dengan begitu, rugi daya yang timbul pada akan menurun yaitu transformator distribusi RB877 sebesar 0,00021 kW dan RB876 sebesar 0,0011 kW.The limit of load imbalance in the Electric Power Distribution System is set between 5%-20% of the load per phase. This occurs due to uneven load growth that causes inequality between each phase. The percentage of load imbalance affects the value of the current flowing in the neutral conductor. So that the neutral will cause power loss in the distribution transformer. This research was conducted on the plumbungan extension, including the RB877 distribution transformer which has a percentage of 64.1% and RB876 has a percentage of 21% of the load imbalance. So that the percentage is outside the limit set by the standard. In this case, research was conducted in order to improve the power losses arising in the RB877 distribution transformer of 0.214 kW and RB876 of 0.025 kW by balancing theload on each phase. Unbalanced Load Flow Simulation in ETAP 19.0 is used in solving the problems in this study. Based on the simulation results, the percentage of load imbalance of distribution transfomator RB877 becomes 1.16% and RB 876 becomes 4.2%. Balancing carried out by dividing the imbalance that occurs in the phase that has a larger capacity to the smaller one results in a decrease in the neutral current which was originally in the RB877 distribution transformer of 25.05 A to 1.8 A and in RB876 which was originally 8.77 A to 0.8 A. Thus, the power losses arising will decrease, namely the RB877 distribution transformer of 0.00021 kW and RB876 of 0.0011 kW.

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Section: Pendahuluanunclassified

Evaluasi Ketidakseimbangan Beban pada GTT 20kV terhadap Arus Netral dan Rugi Daya

Wicaksono,

Wrahatnolo

2023

JJEEE

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Electrical Safety Improvement in Ngaliyan Public Health Facility on Semarang City

Sesotyo,

Sulistyo,

Cahyono

2023

2023 International Conference on Technology, Engineering, and Computing Applications (ICTECA)

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An Indirect Procedure for Real-Time Monitoring the Neutral Conductor Deterioration in Three-Phase Distribution Networks

et al. 2023

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An indirect procedure for real-time monitoring the neutral conductor condition in three-phase distribution networks, based on watching over the growth of a novel parameter (∆τ), has been described in this paper. The parameter ∆τ has been defined as the relationship between the neutral-displacement power and Buchholz’s apparent power measured at the fundamental frequency in the loads of the distribution networks for any condition of the neutral conductor and in its nominal conditions. The effectiveness of this procedure has been compared with other traditional indirect procedures, such as the surveillance of the RMS values of the line-to-neutral load voltages or their zero-sequence component. The practical application on a real distribution network reveals that the growth of the parameter ∆τ in the early stages of the breaking process of the neutral conductor follows a straight line whose equation is known for each length and section of that conductor, regardless of the loads and the voltage regulation of the transformer of the distribution network. This characteristic of the ∆τ parameter shows that the proposed procedure is suitable for monitoring neutral conductor deterioration and can be used for preventive maintenance of distribution networks.

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Measurement of power effects caused by the deterioration of the neutral conductor in three-phase distribution networks

Cited by 3 publications

References 7 publications

Evaluasi Ketidakseimbangan Beban pada GTT 20kV terhadap Arus Netral dan Rugi Daya

Evaluasi Ketidakseimbangan Beban pada GTT 20kV terhadap Arus Netral dan Rugi Daya

Electrical Safety Improvement in Ngaliyan Public Health Facility on Semarang City

An Indirect Procedure for Real-Time Monitoring the Neutral Conductor Deterioration in Three-Phase Distribution Networks

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