Analysis of TCSC Controller of Transmission System Using PSCAD Software

• Published in: CEAT 2016 : 4th IET Clean Energy and Technology Conference : 14-15 November 2016, Kuala Lumpur, Malaysia
• Main Authors: Jumaat, S A, Zulkifli, S A, Rahim, N A
• Format: Conference Proceeding
• Language: English
• Published: Stevenage The Institution of Engineering & Technology 14-11-2016
• Subjects: Alternating current; Circuits; Closed loops; Compensation; Control stability; Controllers; Electric potential; Firing angle; Flexible AC power transmission systems; Power transfer; Reactance; Reactive power; Software; Thyristors; Transmission lines; Voltage
• ISBN: 1785612387; 9781785612381
• DOI: 10.1049/cp.2016.1291

Power system engineer are currently facing Flexible AC Transmission System (FACTS) technology comes into effect challenges to enhance the power transfer capabilities of existing transmission system. Thyristor Controlled Series Capacitor (TCSC) is one of the FACTS device is an impedance compensation which is used in series reactance on an AC transmission system to provide smooth control of series reactance by controlling thyristor firing angle (α) and increase the capability of the reactive power compensation of the transmission line. The voltage of the system must always in the permissible range to ensure stability, and this can be done by control the voltage. There are two types of circuits used are uncompensated circuit and compensated circuit. Two types controller used to control the voltage in compensated circuit, there are open loop control and closed loop control. These circuits are simulated by PSCAD software. The results from two type of circuit are compared and discussed. From the result, the voltage is increased in compensated circuit close loop control circuit. The range of receiving end voltage in open loop control is 10.94kV to 11.36kV. The value of receiving and voltage in close loop control is 11.39kV. The increase of voltage in compensated circuit close loop control shows the TCSC give effect in the control the voltage of transmission line.