A novel control scheme for simultaneous elimination of imbalance, disturbance and voltage harmonic in power systems
来源期刊：中南大学学报(英文版)2014年第4期
论文作者：Javad Olamaei Farnoosh NarjabadiFam Amid Nazeri
文章页码：1368 - 1375
Key words：power quality; series active filter; voltage imbalance; voltage harmonic; symmetrical components
Abstract: In recent years, the increasing application of nonlinear and unbalanced electronic equipment and large single phase loads have made voltage imbalance a serious problem in power distribution systems. A novel approach has been proposed to eliminate voltage imbalance and disturbances. The main strategy of this scheme is based on series active filter. By improving control circuit toward existing schemes and proposing a new strategy to control the voltage amplitude, simultaneous elimination of voltage imbalance, faults, voltage harmonics and also compensation of voltage drop in transmission lines become possible. Eventually, the voltage on the load side is a perfectly balanced three phase voltage with specific proper amplitude. The proposed scheme has been simulated in a test network and the results show high capability of this scheme for the complete elimination of imbalance without phase shift.
Javad Olamaei, Farnoosh NarjabadiFam, Amid Nazeri
(Department of Electrical Engineering, College of Technology and Engineering,
South Tehran Branch, Islamic Azad University, Tehran, Iran)
Abstract:In recent years, the increasing application of nonlinear and unbalanced electronic equipment and large single phase loads have made voltage imbalance a serious problem in power distribution systems. A novel approach has been proposed to eliminate voltage imbalance and disturbances. The main strategy of this scheme is based on series active filter. By improving control circuit toward existing schemes and proposing a new strategy to control the voltage amplitude, simultaneous elimination of voltage imbalance, faults, voltage harmonics and also compensation of voltage drop in transmission lines become possible. Eventually, the voltage on the load side is a perfectly balanced three phase voltage with specific proper amplitude. The proposed scheme has been simulated in a test network and the results show high capability of this scheme for the complete elimination of imbalance without phase shift.
Key words:power quality; series active filter; voltage imbalance; voltage harmonic; symmetrical components
