Method for Theoretical Line Loss Calculation of 10kV Distribution District based on Actual Electric Energy of Distribution Transformer Secondary Side

Abstract

The 10kV distribution district serves the electricity customer, and its theoretical loss can reflect the real situation of the technical line loss. Adopting the equivalent resistance method based on average current, on the basis of the remotely read active and reactive electricity at the head of the 10kV line, as well as the actual copying electricity on the secondary side of distribution transformer, this paper establishes mathematical models for calculating the electricity loss in both forward and backward directions. The case analysis shows that the results of the backward mathematical model accurately reflect the actual value of the theoretical line loss, and by comparing the theoretical line loss rate calculated by the two mathematical models, the unknown loss of the line can be identified.