Article: Optimal power flow-based congestion management in restructured power systems Journal: International Journal of Power and Energy Conversion (IJPEC) 2016 Vol.7 No.1 pp.84 - 96 Abstract: This paper deals with an important issue of transmission network congestion in deregulated power systems, where relieving transmission network congestion without disturbing the existing transactions. The thyristor controlled series capacitor (TCSC) is one of the alternatives to reduce the flow in heavily loaded lines, result in an increased loadability and fulfilled contractual requirement by controlling the power flow in the network. The distribution generation (DG) units are another alternative to compensate deficit power at load bus so that reduce power flow heavily loaded lines. Considerable cost of TCSC and maximum benefits with DG unit at load buses, it is necessary to find their optimal location in the system, a method to determine the optimal placement of these devices has been suggested real power flow and transmission line relief sensitivity index methods. The OPF-based congestion management (CM) strategy has been implemented to minimise production cost and alleviates transmission network congestion with TCSC/DG unit. The OPF-based CM problem is implemented on 26 bus power system network and solutions are obtained by three conventional methods. The experimental results prove that the interior point (IP) method is gives an optimum economical solution. Inderscience Publishers - linking academia, business and industry through research

Title: Optimal power flow-based congestion management in restructured power systems

Authors: Guguloth Ramesh; T.K. Sunil Kumar

Addresses: Department of Electrical Engineering, National Institute of Technology Calicut, Kerala-673601, India ' Department of Electrical Engineering, National Institute of Technology Calicut, Kerala-673601, India

Abstract: This paper deals with an important issue of transmission network congestion in deregulated power systems, where relieving transmission network congestion without disturbing the existing transactions. The thyristor controlled series capacitor (TCSC) is one of the alternatives to reduce the flow in heavily loaded lines, result in an increased loadability and fulfilled contractual requirement by controlling the power flow in the network. The distribution generation (DG) units are another alternative to compensate deficit power at load bus so that reduce power flow heavily loaded lines. Considerable cost of TCSC and maximum benefits with DG unit at load buses, it is necessary to find their optimal location in the system, a method to determine the optimal placement of these devices has been suggested real power flow and transmission line relief sensitivity index methods. The OPF-based congestion management (CM) strategy has been implemented to minimise production cost and alleviates transmission network congestion with TCSC/DG unit. The OPF-based CM problem is implemented on 26 bus power system network and solutions are obtained by three conventional methods. The experimental results prove that the interior point (IP) method is gives an optimum economical solution.

Keywords: restructured power systems; congestion management; thyristor controlled series capacitors; TCSC; distribution generation; DG units; sensitivity methods; optimisation; optimal power flow; transmission network congestion; optimal placement.

DOI: 10.1504/IJPEC.2016.075067

International Journal of Power and Energy Conversion, 2016 Vol.7 No.1, pp.84 - 96

Received: 05 Jan 2015
Accepted: 03 Apr 2015
Published online: 02 Mar 2016 *

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Title: Optimal power flow-based congestion management in restructured power systems

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