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A comparative study among UPQC models with and without real power injection to improve energy efficiency of radial distribution networks

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ARTICLE DOWNLOAD

A comparative study among UPQC models with and without real power injection to improve energy efficiency of radial distribution networks

10$

Shubh Lakshmi & Sanjib Ganguly 

Abstract

This paper presents a comparative study among different models of unified power quality conditioner (UPQC) designed to improve the energy efficiency of the radial distribution networks. An UPQC consists of two voltage-sourced inverters, i.e., series and shunt inverters. In connected UPQC topology, these two are connected with a DC link. In open UPQC (UPQC-O), these two are not physically connected. But, they share a common communication link. Four models are formulated. They are: (1) UPQC without real power injection, (2) UPQC with real power injection, (3) UPQC-O without real power injection, and (4) UPQC-O with real power injection. A planning optimization model is formulated to determine the optimal locations for the series and shunt inverters for these four models. The objective function consists of the investment and maintenance cost of the inverters and battery, and the cost of energy loss. The energy loss comprises of line losses, inverter losses, and transformer loss. The planning optimization is constrained to ensure a desired power quality level of the network. Particle swarm optimization is chosen as the solution tool. The results show that the placement of UPQC-O provides higher energy efficiency as compared to the connected UPQC topology.

Only units of this product remain
Year 2020
Language English
Format PDF
DOI 10.1007/s12667-018-0310-z