Load Balancing on TJSB Transformer Distribution using Two-Points Time Method

Authors

  • Jimmy Trio Putra Universitas Gadjah Mada
  • Mohammad Arsyad Universitas Gadjah Mada

DOI:

https://doi.org/10.26555/jiteki.v4i2.11809

Keywords:

neutral current, load unbalances, load losses

Abstract

The load unbalances is caused by single phase loads on low voltage network consumers. In the design of three-phase transformer loads are generally designed in a balanced way, but in reality that occurs, the distribution of transformer load in the network is not balanced. This unbalance can lead the current to flow in a neutral conductor if not observed accordingly. The flowing current in the transformer's neutral conductor can cause losses. This paper discusses load balancing using the two-point time method as a recommendation for moving the consumer's load from one phase to another phase. This study used real data by performing direct measurements on the loading of TJSB transformer Pabuaran feeder of PT (PLN) Persero Sukabumi Region both before and after the load balancing. The results obtained after the load balancing include the percentage of unbalance during the day that is 5% which was previously 16% and at night become 5.6% from 25.6%. The initial neutral current was 44 A and decreased to be 16 A during the day, while at night decreased from 68 A to 24 A. Power losses due to neutral currents flowing in the neutral conductor obtained at noon i.e. 0.19 kW from previously 1.32 kW and at night 0.39 kW from the previous 2.3 kW.

References

Abdelhay A. S. and O. P. Malik, “Electric Distribution Systemsâ€, 2011, published by John Wiley & Sons.

Gonen, T. “Electric Power Distribution System Engineeringâ€, 2008. New York: CRC Press Taylor and Francis.

Chen J, Y. Y. Yajuan, S. Jian, and L. Bin. “Research and Application of Load Balance Approach for Distribution Based on Big Dataâ€. International Conference on Electricity Distribution. Xi’an. 2016: 1-6.

Atabak N., I. Iskender, N. Gene. “Evaluating and De-rating of three-phase distribution transformer under unbalanced voltage and unbalance load using finite methodâ€. IEEE 8th International Power Engineering and Optimization Conference. Langkawi. 2014: 160-165.

Basit A., I Siddique. “Distribution System Loss Reduction by Automatic Transformer Load Balancingâ€. 20th International Multi-topic Conference. 2017: 1-5.

Kartik P. B. and M. George. “Maintaining balanced three-phase load voltage during single-phase auto-reclosing in medium voltage distribution linesâ€. IET Generation, Transmission & Distribution. 2013. Vol. 8, ISS. 5, pp. 798-802.

Chun, L.S., Yu-Chi P., Hai-Ming C., Chao-Lin K., “Design of transformer load monitoring systems by utilizing smart meter dataâ€. IEEE Conference. 2017: 88-92.

P. Houman, W. J. Peter. “Impact of High Penetration on Distribution Transformer Insulation Lifeâ€. IEEE Transaction on Power Delivery. 2014. Vol. 29, No.3. pp. 1212-1220.

Tzu Hung, Chang, T.E., Lee,C., and H. Lin. “Distribution network reconfiguration for load balancing with a colored petri net algorithm. IEEE International Conference on Applied System Innovation. Me-en. 2017: 1040-1043.

H, Tianqi, F. Leon. “Controlling non-synchronous micro-grids for load balancing of radial distribution systemsâ€. IEEE Transaction on Smart Grid. 2017. Vol. 8., No.6, pp: 2608-2616.

Z, Jianqiao, W. Jiacheng. “Multi-bus flexible interconnection scheme for balancing power transformers in low voltage distribution systemsâ€. IEEE Conference. 2017: 6401-6406.

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Published

2019-01-23

Issue

Vol. 4 No. 2 (2018)

Section

Articles

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