Transient switching analysis of a nonconventional rural generation system

• Published in: Electric power systems research 2021-07, Vol.196, p.107245, Article 107245
• Main Authors: Chaves, J.S., Tavares, M.C.
• Format: Article
• Language: English
• Subjects: Capacitive coupling; Resonant circuit; Rural electrification; Transmission lines
• ISSN: 0378-7796; 1873-2046
• DOI: 10.1016/j.epsr.2021.107245

•A nonconventional coupling generation system that is composed of a collector line and an innovative distribution substation is proposed.•The generation system can provide firm energy in the range of 100 kW.•Rural system protection was based on three spark gaps (SGs) installed at the collector line.•Typical switches such as load trips and faults along both host transmission lines, and rural systems were presented.•The switchings were adequate to properly mitigate the over voltages. This paper introduces a nonconventional rural generation system that extracts energy from high-voltage transmission line surroundings. The system was designed for a 230-kV transmission line and consists of a special 20-km collector line and an innovative substation. The energy is coupled to the collector line and supplied through a resonant circuit. There is no physical contact with the transmission line. A detailed electromagnetic study is described, assuring there is no disturbance at the transmission line and that the rural system delivers high-quality energy. Spark gaps were used to avoid overvoltage along the rural feeder. Transmission line reliability is not compromised.