Management of Disaster in Distribution Line using Flexible Capacitors Placement

摘要

This papers proposes scheme of using flexible capacitor placing to mitigate the occurrence of disaster distribution system. The configuration of a distribution network is different from a transmission network. Disasters, man-made or natural leads to the malfunctioning of distribution network. Sometimes the total collapse of the distribution network. Distribution systems are typically radial: the loop power flow does not exist. Distribution systems include the inductive loads along with transformers and lines, which account for quite significant power loss due to lagging current. The voltage profile of the distribution line is adversely affected by the reactive power demand .When the reactive power demand by the load is not met by the distribution system the voltage fluctuates and with the result the transients are developed in the transformer windings. The cumulative effect of the poor voltage profile within no time leads to the disaster .In order to mitigate the disaster the reactive power compensation is the ultimate tool that can be used economically and efficiently to manage the reactive power so that the distribution system gets a smooth and flat voltage profile . The introduction of strategically sized and placed shunt capacitors within the distribution system help to counteract the losses created due to an inductive system by, increasing the system capacity, reducing system losses and improving the voltage profile. The problem of capacitor allocation includes the location, type (fixed or switched), and size of capacitor. The sizing of capacitor is determined by a simple capacitor-sizing algorithm developed in MATLAB.