An Multi-Objective Approach for Power Quality Improvement: UPQC

This paper presents a multi-objective control strategy for power quality issues. With increasing applications of nonlinear and semi-conductor devices in distribution systems and industries, power-quality (PQ) problems, such as harmonics, neutral current elimination, voltage sag, voltage swell reactive power has become an unavoidable issue. Due to the changing trends and restructuring of power systems, the consumers are looking forward to the quality and reliability of power supply at the load centers. The aim therefore, in this work, is to identify the prominent concerns in the area and thereby to recommend measures that can enhance the quality of the power, keeping in mind their economic reliability and technical consequences. The Unified power quality conditioner (UPQC) is an effective custom power device for the enhancement of power quality due to its quick response, high reliability and nominal cost.