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Reliability Evaluation of a Radial Feeder Configurations by Replacing the Distribution Transformer with the Solid-State Transformer
G Kirankumar1, E Vidya Sagar2
1G. Kiran Kumar, Department of Electrical Engineering, University College of Engineering, Osmania University, Hyderabad, (Telangana), India.
2Dr. E. Vidya Sagar, Department of Electrical Engineering, University College of Engineering, Osmania University, Hyderabad, (Telangana), India.
Manuscript received on 21 October 2023 | Revised Manuscript received on 28 October 2023 | Manuscript Accepted on 15 November 2023 | Manuscript published on 30 November 2023 | PP: 1-5 | Volume-12 Issue-4, November 2023 | Retrieval Number: 100.1/ijrte.D79521112423 | DOI: 10.35940/ijrte.D7952.1112423
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The radial feeder is the most typical power distribution system configuration for distributing power to the consumer through the distribution transformer. Distribution transformers are a key component of power distribution systems. They enable voltage transformation, improve safety, reduce energy losses, enhance network reliability, and facilitate the efficient distribution of electricity to consumers. Due to their limited role in balancing loads and integrating renewable energy sources, they must be replaced with an alternative solution to modernise and optimise distribution grids. A solid-state transformer (SST) is a power electronic device that, in many ways, may replace a typical distribution transformer (DTR). It also improves controllability and provides a direct current link, making it simple to integrate distributed energy sources on either side of medium- and lowvoltage networks. However, reliability is the most critical parameter in restricting its applications. Modularity is one way to improve reliability and availability by directly rerouting power within the modular system. This work investigates the failure rate of a modular solar thermal system (SST) by determining the number of module units required in SST design based on the available Insulated Gate Bipolar Transistor (IGBT) ratings. Further, the reliability of a radial feeder is evaluated by considering the configuration of a) without AS and with DTRs, b) without AS and replacement of DTRs with SST, c) with AS and DTRs, and d) with AS and replacement of DTRs with SST.
Keywords: Reliability, DTR, SST, and Radial Feeder.
Scope of the Article: Reliability