Abstract— Construction of High Voltage substations in the heart of cities is becoming more and more difficult. The small size of available land, the difficulties associated with the entrance and exit of high voltage overhead lines, the increasing protest of neighbors, high priority of projects and short schedule to energize these substations are some of the common problems for those who work in...

There are no accepted procedures that quantify the apparent charge of partial discharge (PD) in gas-insulated substations (GIS). This paper proposes a calibration method for PD estimation using unconventional electromagnetic sensors: magnetic loop antenna (inductive coupler) and an electric (capacitive coupler.) The procedure is intended voltage double integral method, which reviewed antennas e...

The following six books are reviewed: Gas Insulated Substations, 2nd Edition (Koch, H.J; 2022; Digital Twin Driven Service (Tao, F., et al; 2022); Space Micropropulsion for Nanosatellites—Progress, Challenges and Future (Cheah, K.H.; Bismuth-Based Materials Environmental Remediation (Nayak, A.K.;2022); Technologies Integrated Energy Systems Networks (Graditi, G. Di Somma, M.;2022); Essentials o...

Switching of disconnectors (DS) and various faults in Gas Insulated Substation (GIS) causes number of pre-strikes and re-strikes happens. The short duration voltage collapse, traveling surges in busbar causes Very Fast Transient Over voltages (VFTO) and Very fast Transient Currents (VFTC) in the GIS substation. The main challenge is to reduce VFTO and VFTC amplitudes. Several methods have been ...

Due to the opening or closing of circuit breakers and disconnect switches in Gas Insulated Substations (GIS), especially in the pumped storage power stations, Very Fast Transient Over-voltages (VFTO) are generated. This paper describes the 500 kV and 750 kV GIS. The variations of VFTO magnitudes at different points in 500 kV and 750 kV GIS during different switching operations have been calcula...

Abstract The simulation models of the 500kV gas-insulated transmission lines (GIL) and substation (GIS) systems in a realistic nuclear plant are presented paper. Very Fast Transient Overvoltage (VFTO) which is generated during switching operations, analyzed. Some affecting factors on level VFTO investigated. These location power source, entrance capacitance potential transformer (PT), capacitiv...

Worldwide many electrical equipment insulation failures have been reported caused by switching operations, while those equipments had previously passed all the standard tests and complied with all quality requirements. The problem is mostly associated with high-frequency overvoltages generated during opening or closing of a switching device. The transients generated during switching operations ...

The Transmission part of the power sector is very much important as it deals with huge losses complete sector. substations play a key role in transmission process since generation at plants to final stage consumer end utilization. utmost care should be taken protect these same reduce losses. substation needs protected from blackouts which big problem substations. For this, high voltage equipmen...