Optimal allocation of TCSCs by adaptive DE algorithm

• Published in: IET generation, transmission & distribution Vol. 10; no. 15; pp. 3844 - 3854
• Main Authors: Sakr, Walla S, El-Sehiemy, Ragab A, Azmy, Ahmed M
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 17.11.2016
• Subjects: Adaptive algorithms; adaptive DE algorithm; adaptive differential evolution algorithm; Algorithms; Allocations; emergency operating conditions; evolutionary computation; flexible AC transmission systems; flexible alternating current transmission systems units; generating units; IEEE 30‐bus test systems; IEEE 9‐bus test systems; multiobjective DE algorithm; Multiple objective; Networks; optimal siting; optimal sizing; Optimization; penalty factors; Performance enhancement; power system management; power transformers; power transmission lines; Reactive power; reactive power losses reduction; reactive power management problem; static VAr compensators; TCSC cost reduction; TCSC optimal allocation; thyristor applications; thyristor‐controlled series compensator allocation; transformers; transmission lines; voltage profile; Western delta network; power transmission lines; power system management; flexible AC transmission systems; reactive power management problem; adaptive differential evolution algorithm; voltage profile; optimal siting; optimal sizing; transformers; static VAr compensators; power transformers; TCSC cost reduction; multiobjective DE algorithm; adaptive DE algorithm; IEEE 30-bus test systems; Western delta network; penalty factors; flexible alternating current transmission systems units; transmission lines; reactive power losses reduction; IEEE 9-bus test systems; evolutionary computation; TCSC optimal allocation; emergency operating conditions; reactive power; thyristor applications; thyristor-controlled series compensator allocation; generating units
• ISSN: 1751-8687; 1751-8695
• DOI: 10.1049/iet-gtd.2016.0362

This study presents an adaptive differential evolution (DE) algorithm to allocate the thyristor-controlled series compensator (TCSC) incorporated with the reactive power management problem. In addition, a dynamic updating is applied for scaling and penalty factors to enhance the performance of the multi-objective DE algorithm. During the selection of the best candidate lines for efficient allocation of TCSC devices, three situations are considered for excluded transmission lines. These situations are the lines connected between two generating units; lines connected through transformers and the lines of low losses. The considered multi-objective function compromises between reducing power losses, improving voltage profile, reducing reactive power losses, reducing TCSC cost and reducing number of flexible alternating current transmission systems units. The optimal siting and sizing of TCSC is defined for normal and emergency operating conditions. The proposed procedure is employed for IEEE 9-bus and IEEE 30-bus test systems in addition to western delta network as a real part of the Egyptian network. Four case studies are considered for each test system to represent normal and abnormal operating conditions. Results clearly indicate the effectiveness of the adaptive DE algorithm to allocate perfectly the TCSC to enhance the system performance.