Investigation of faulty capacitor in symmetrical shunt capacitor bank via unbalanced current

Azli, Muhammad Amirul Syafiq (2021) Investigation of faulty capacitor in symmetrical shunt capacitor bank via unbalanced current. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Shunt capacitor banks (SCB) are situated closer to the main substation to compensate for capacitive reactivation of electricity. A higher power factor is achieved, power losses are minimized, and a higher voltage profile is achieved. With this contemporary technology and the rising use of electrical equipment with motors nowadays, the power factor at the transmission site will constantly be in a trailing condition, and this must be corrected to ensure that the electricity's utilization efficiency is always close to the ideal power factor. However, the increased use of capacitor banks has resulted in an increase in the number of capacitor bank failures at the transmission site. As a result, observing the current output from the capacitor bank is the quickest and most straightforward means of identifying a failing capacitor bank. An innovative approach for identifying the failed phase and section in capacitor banks are presented in this study paper. The approach is based on the unbalance current approach.

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