A Comparative Study of Compensation Capacities of using Railway Power Conditioner and Steinmetz Compensator in Traction Substation with V/V Transformer

Authors

  • Kritsada Mongkoldee Institute of Engineering, Suranaree University of Technology.
  • Thanatchai Kulworawanichpong Institute of Engineering, Suranaree University of Technology

Keywords:

railway power conditioner, steinmetz theory, optimal compensation capacity, V/V transformer

Abstract

This paper presents the comparative study of using two different compensators in a railway traction substation with a V/V transformer to alleviate voltage unbalance and low power factor in a railway power supply system: railway power conditioner (RPC) and Steinmetz compensator. The paper also introduces mathematical models and a calculation method for searching optimal rating of both compensators. One computer simulation study case under the worst case of loading condition was used to validate the proposed models and method. The simulation results showed that the Steinmetz compensator had approximately 30 percent less optimal capacity than that of RPC and had better capability of substation voltage regulation under the same compensation target, voltage unbalance factor of less than 2%, and power factor of greater or equal to 0.95. Consequently, the installation of Steinmetz compensator could result in less compensator cost, with a capacity solely taken into consideration.

Author Biographies

Kritsada Mongkoldee, Institute of Engineering, Suranaree University of Technology.

School of Electrical Engineering, Institute of Engineering, Suranaree University of Technology, 111, University Avenue Road, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.

Thanatchai Kulworawanichpong, Institute of Engineering, Suranaree University of Technology

School of Electrical Engineering, Institute of Engineering, Suranaree University of Technology, 111, University Avenue Road, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.

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Published

2021-07-27

How to Cite

Mongkoldee, K., & Kulworawanichpong, T. (2021). A Comparative Study of Compensation Capacities of using Railway Power Conditioner and Steinmetz Compensator in Traction Substation with V/V Transformer. Recent Science and Technology, 13(2), 302–314. Retrieved from https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/240261

Issue

Section

Research Article