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Reactive Power Dispatching for Power System Voltage Security
IEEE Transactions on Power Apparatus and Systems, 1983An optimization-based method is presented for determining the scheduling of reactive equipment (capacitors for example) on an hourly basis for maximum steady-state power system security during normal and post-contingency conditions. The method simultaneously deals with the effects of a number of contingencies, and includes all bus voltages as ...
R. E. Palmer +3 more
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A Preventive Strategy Method for Voltage and Reactive Power Dispatch
IEEE Power Engineering Review, 1985A preventive control program for voltage and reactive power dispatch is developed to enhance a system's capability to cope with outages. In this program, not only the base case but also associated contingency cases have been considered. Therefore, it is referred to as the Global VAR Dispatch Method.
David Sun, Raymond Shoults
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Dispatch of reactive power compensators in transmission grids
Electric Power Systems Research, 2020Abstract The phase-out of conventional power plants reduces the reactive power reserve from synchronous generators in transmission grids. Operational concepts need to be adapted to integrate reactive power compensators such as STATCOMs into voltage control schemes.
Markus Knittel +3 more
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Differential evolution approach for optimal reactive power dispatch
Applied Soft Computing, 2008Differential evolution based optimal reactive power dispatch for real power loss minimization in power system is presented in this paper. The proposed methodology determines control variable settings such as generator terminal voltages, tap positions and the number of shunts to be switched, for real power loss minimization in the transmission system ...
M. Varadarajan, K. S. Swarup 0001
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Application of evolutionary programming to optimal reactive power dispatch
Proceedings of the First IEEE Conference on Evolutionary Computation. IEEE World Congress on Computational Intelligence, 2002This paper is concerned with application of evolutionary programming to optimal reactive power dispatch and voltage control of power systems. Several techniques have been developed to make the EP suitable to the practical optimal problems of large scale systems.
J. T. Ma, Q. H. Wu
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OPF computer program for reactive power dispatch
2012 10th International Power & Energy Conference (IPEC), 2012In this paper the problem of reactive power dispatching in electrical power systems is studied. The problem is treated through optimal power flows (OPF) using an objective function that minimizes real power losses in transmission lines. A computer program that solves OPF was written in Matlab/Octave using the Newton-Raphson method (NR) and quadratic ...
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Genetic algorithm for optimal reactive power dispatch
Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137), 2002Scheduling of reactive power in an optimum manner reduces circulating VAr promoting flatter voltage profile which lead to appreciable MW saving on account of reduced power system losses. Hence, the optimal reactive power dispatch assumes extremely important functioning both in the planning stage as well as in day to day operation of the power system ...
W.N.W. Abdullah +3 more
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Chance Constrained Optimal Reactive Power Dispatch
2018 IEEE Power & Energy Society General Meeting (PESGM), 2018The uncertainties from deepening penetration of renewable energy resources have already shown to impact not only the market operations, but also the physical operations in large power systems. It is demonstrated that deterministic modeling of wind would lead to voltage insecurity in the reality where wind fluctuates.
Xinbo Geng, Le Xie, Diran Obadina
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Implications of reactive power on nodal pricing and dispatch
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), 2002This paper investigates the effect of reactive power constraints on the nodal prices and dispatch in a deregulated pool market. If the market rules are such that the real power is bundled with the reactive power, the nodal prices will have components due to reactive power constraints.
R.A.S.K. Ranatunga +2 more
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Security constrained optimal reactive power dispatch
Electric Power Systems Research, 1989Abstract This paper presents a systematic methodology to allocate reactive power devices in a power system. This is achieved through the application of an active set analysis based linear programming technique. The procedure takes into consideration outages which cause voltage problems and also existing reactive power controllers are fully utilized ...
Venkataramana Ajjarapu +2 more
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