Strategic capacitor placement for reducing voltage collapse probability in power systems

A. Sufizadeh, B. Tousi, V. Talavat, S. Rezaeian-Marjani

Journal of Energy Engineering and Management Vol. 12, nº. 2, pp. 56 - 63

Summary:

Bus voltage stability is very important factor in power system reliability.Voltage instability and protection system malfunction can lead to voltage collapse. If power systems cannot meet reactive power demands on a bus, voltage starts to drop. Thus, reactive power compensation can reduce the risk of voltage collapse. In this paper, two new indices are introduced for weak bus identification; also, a method is proposed for reducing the collapse probability of placing capacitors. To this end, the networks of 30 IEEE standard buses were studied; buses were ranked according to the weakest bus identification indices. Network probabilities of being in normal, under-voltage, and risk-and-collapse zones were calculated. By the strategic placement of capacitors with PSO (Particle swarm optimization), the algorithm probability of networks in the collapse zone reduced significantly; also, the performance of proposed indices over other methods was illustrated.

Keywords: Voltage collapse; Reliability; Reactive power; Capacitor; PSO

DOI reference: https://doi.org/10.22052/12.2.56

Published on paper: August 2022.

Citation:
A. Sufizadeh, B. Tousi, V. Talavat, S. Rezaeian-Marjani, Strategic capacitor placement for reducing voltage collapse probability in power systems. Journal of Energy Engineering and Management. Vol. 12, nº. 2, pp. 56 - 63, August 2022.