Analysis of Loss Measurements on Distribution Networks Using Relaying Equipment

Abstract

The objective of this work is to study the uncertainty associated with the measurement of energy losses in a distribution network. It is done by means of differences between input and output energies of each region. For this, the energy measurement system uses the only equipment available, intended for the protection system. It comprises protection secondary outputs of current and voltage transformers and energy measurement using protection relays. As the rated accuracy of these devices are low for energy measurement, tests were done to determine if their actual errors fulfils the project requirements.