Title: Estimation of dynamic available transfer capability including Hopf bifurcation limit using step by step algorithm
Authors: V. Agnes Idhaya Selvi; R. Narmatha Banu; D. Devaraj; M. Karuppasamypandiyan
Addresses: Electrical and Electronics Department, Kalasalingam University, TN, India ' Electrical and Electronics Department, Velammal College of Engineering and Tech., TN, India ' Electrical and Electronics Department, Kalasalingam University, TN, India ' Electrical and Electronics Department, Kalasalingam University, TN, India
Abstract: The electric power industries, all over the world, are changing to a new deregulated environment. In a deregulated environment, calculation of available transfer capability (ATC) of transmission system is an important issue. ATC calculated with dynamic stability limit is referred as dynamic ATC (DATC). The Hopf bifurcation limit, associated with dynamic voltage instability is considered in this paper as limit for ATC calculation. A new step by step algorithm for finding Hopf bifurcation point in DATC problem has been developed. Dynamic ATC is calculated for bilateral and multilateral transaction using proposed approach. The proposed approach is tested on WSCC 3 machine 9-bus system and New England 10 machine 39-bus system. This is implemented for two load scenarios namely as static and dynamic (induction machine model) load. The results are compared with existing sequential quadratic programming method. Test results show the accuracy and effectiveness of the proposed method in estimating ATC value.
Keywords: dynamic available transfer capability; DATC; Hopf bifurcation limit; step by step algorithm; deregulation; power industry; electricity generation; static load; dynamic load.
International Journal of Power and Energy Conversion, 2017 Vol.8 No.2, pp.113 - 131
Received: 10 Jan 2015
Accepted: 20 Jul 2015
Published online: 22 Mar 2017 *