Journal of
Electrical and Electronics Engineering Research

  • Abbreviation: J. Electrical Electron. Eng. Res.
  • Language: English
  • ISSN: 2141-2367
  • DOI: 10.5897/JEEER
  • Start Year: 2009
  • Published Articles: 59

Full Length Research Paper

Congestion management in high voltage transmission line using thyrister controlled series capacitors (TCSC)

Anwar S. Siddiqui1*, Rashmi Jain2, Majid Jamil1 and Gupta C. P.3
  Electrical Engineering Department, Faculty of Engineering and Technology, JMI, New Delhi, India. 2YMCA University of Science and Technology, Faridabad, India. 3Electrical Engineering Department, IIT Roorkee,Uttarakhand, India
Email: [email protected]

  •  Accepted: 21 August 2011
  •  Published: 31 October 2011



Congestion management is one of the technical challenges in power system deregulation. In deregulated electricity market transmission congestion occurs when there is insufficient transmission capacity to simultaneously accommodate all constraints for transmission of a line. Flexible alternative current transmission system (FACTS) devices can be an alternative to reduce the flows in heavily loaded lines, resulting in an increased loadability, low system loss, improved stability of the network, reduced cost of production and fulfilled contractual requirement by controlling the power flow in the network. Proper location of a FACTS controller is key to maximize its benefits. This paper also demonstrates the ability of FACTS devices to reduce the overall operating cost and their impact on transmission pricing. A sensitivity factor based approach is used for the optimal placement of the thyrister controlled series capacitors (TCSC) to minimize the congestion cost. The sensitivity of the congested line flow with respect to flow in other lines has been used for the placement of the TCSC. The effectiveness of the proposed method has been demonstrated on IEEE 14-bus system.


Key words: Congestion management, flexible alternative current transmission system (FACTS), thyrister controlled series capacitors (TCSC), sensitivity analysis, matpower