Effect of TCVR Controlled Voltage on Short-Circuit Calculations in Case of Ground Fault in the Algerian Network

Abstract

Flexible AC Transmission Systems (FACTS) technology has been developed to control voltage and reactive power in power systems by incorporating high speed power electronic devices. The FACTS device presented in this research work is Thyristor Controlled Voltage Regulator (TCVR) which is a novel FACTS device that aims to control system voltage and hence improves voltage regulation. This paper studies the effect of voltages injected by TCVR, whether positive or negative, on short-circuit calculations. The type of fault considered is a ground fault that occurs at the end of a high voltage line compensated at its mid point by TCVR while maintaining a fixed fault resistance. A case study is selected for a high voltage power line in the Algerian transmission network. In this research work, the illustrated simulation results show perfect agreement with the presented theoretical analysis which is based on the method of symmetrical components.

Voltage regulation and power loss reduction by integration of SVC in distribution networks via PSSE

“…In the current market, SVC is still viable and being implemented within the transmission and distribution network as compared to the other FACTS devices. This is because the costing, maintenance and performance of the SVC technology is more feasible and matured to be applied whereby it requires smaller energy storage to perform any reactive compensations [7,8]. The drawback of the current SVC technology is due to its slow response time which leads to a slower compensation time compared to its successor [15][16][17][18][19][20][21].…”

A Comparative Study of Ground Fault Analysis for a Practical Case of a Transmission Line Equipped with Different Series FACTS Devices

“…The case study used in this paper is for a high voltage transmission line in the Algerian power network which is similar to that used in [38] where the authors investigated the effect of the controlled voltage injected by Thyristor Controlled Voltage Regulator (TCVR) in the case of a phase to ground fault.…”