Calculation and allocation of load losses in distribution system using load research data and load factor method

Abstract

This work employs load research data and load factor method to calculate load losses in distribution system. The datasets during 2008–2012 are obtained from The Provincial Electricity Authority of Thailand. It is found that the loss factor is proportional to the load factor. But, at a given load factor, the loss constant coefficient may vary depending on daily load pattern. Thus, the load losses vary significantly with location and load class. It is proposed to allocate load losses for each service area and each tariff schedule based on either peak load or energy consumption.