Switching Transient Analysis Of Capacitor Coupled Substation

Capacitor Coupled Substation is one of the low-cost technology for rural electrification (RE). However, the basic component of CCS is a capacitor and switching on the CCS during energisation process can result in an unwanted, high-frequency inrush current and transient overvoltage. These transients can lower the lifetime of CCS and can damage the electromagnetic switches such as circuit breakers. This paper, therefore, presents switching transient analysis of capacitor-coupled substation (CCS). Firstly, a CCS is modelled and simulated using MATLAB/Simulink. Transient response of the CCS with and without Ferro-resonance circuit is investigated. Secondly, a prototype of CCS was constructed, and the same investigation was done. Among many observations, it was generally observed through simulation and practical results that the tapping voltage oscillates when Ferro-resonance circuit is not incorporated