Naslov
Temperature Rise Prediction in Three-Phase Busbar Systems - A Step in Preparation for Medium-voltage Switchgear Type Testing

Autori
Kaštelan, Nediljko ; Zubčić, Marko ; Krčum, Maja ; Bacalja, Bruna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts - 1st Kotor International Maritime Conference / Špiro, Ivošević ; Milena, Dževerdanović Pejović ; Zorica, Đurović - Kotor : Faculty of Maritime Studies Kotor, University of Montenegro, 2021, 5-5

Skup
1st Kotor International Maritime Conference (KIMC 2021)

Mjesto i datum
Kotor, Crna Gora, 26.11.2021. - 27.11.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Medium voltage switchgear, Energy efficiency, Temperature rise, Busbars, Ship electrical system

Sažetak
Optimization of a ship's high voltage (HV) switchboard at the individual switchgear level with the aim of improving the overall energy efficiency is achieved by reducing various influencing factors. The optimized switchgear design still has to meet the conditions regarding thermal, electrical and mechanical stress. Therefore, new designs of AirInsulated Switchgear (AIS) are subjected to various type tests to verify their compliance with the relevant standards before they can be used in an electrical system. In preparation for type testing, various computer- based simulations must be performed to predict the behaviour of the proposed design. These predictions help to keep the overall production cost to a minimum, as various problems that lead to type test failure can be identified in advance. One of the type tests to be fulfilled is the temperature rise test, where the thermal stress of the busbars at rated current is analysed, with rise limits defined according to IEC 62271-1. In this paper, the temperature rise analysis of several selected three-phase busbar systems for use in a newly proposed AIS design using FEM and CFD is presented. In order to save computational time, simplified models are used for the first selection, where the electromagnetic losses of the busbars are used as the source of heating and natural air convection is also considered. The objective of the simulation is to select a busbar configuration that has the lowest temperature rise and electromagnetic losses, which ultimately contributes to the overall energy efficiency of a ship's electrical distribution system.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Tehnologija prometa i transport

POVEZANOST RADA