Algorithm for estimating the mode and electricity losses in distribution electric networks 6-110 kV conditions of incomplete information

Madiyar Erejepov,A N Novikov,Bayram Seytmuratov,B M Khusanov,Ziynatdin Sayimbetov,F.-J Lin,A.M Foley,A Kler,C.-I Chen,Y Sun,D Sidorov,N Voropai,P Lombardi,K Suslov

doi:10.1051/e3sconf/202128907018

Abstract

The article provides an analysis of methods for calculating electricity losses. The conditions for the application of methods for calculating electricity losses are determined, and structural separated losses in electrical networks are shown. An algorithm for calculating electricity losses is presented, which makes it possible to obtain acceptable results with a minimum of initial information, which has a limited degree of reliability.

Highlights

When performing calculations of the steady state and energy losses in distribution networks of 6-110 kV, we are faced with a lack of circuit and mode information
To perform calculations, it is possible to use methods that allow taking into account the features of the information support of networks of this class [1-7]. This approach is implemented in the DelPROD program, which makes it possible to calculate the mode and energy losses in open distribution networks of 6-10 kV and 35-110 kV, taking into account the incompleteness of information
The program provides: -input, creation and correction of the base of initial data on the schemes of distribution networks; -input and correction of initial data on feeder loads; -import of data from text files into databases; -determination of the total characteristics of the substation; -calculation and formation of the feeder equivalent circuit; -evaluation of the state of the feeder mode; -calculation of steady-state modes of distribution networks; -calculation of electricity losses; -drawing up a balance of electricity for feeders; -display of calculation results

Summary

Introduction

When performing calculations of the steady state and energy losses in distribution networks of 6-110 kV, we are faced with a lack of circuit and mode information. To perform calculations, it is possible to use methods that allow taking into account the features of the information support of networks of this class [1-7]. This approach is implemented in the DelPROD program, which makes it possible to calculate the mode and energy losses in open distribution networks of 6-10 kV and 35-110 kV, taking into account the incompleteness of information. Where РRGU(i), QRGU(i) - PG powers, calculated in the iterative process and corresponding to the calculated values of loads and voltages at the nodes of the circuit; εR, εq - a priori weights that characterize the degree of confidence in the measurements, which are determined from the results of measuring the error variance σ2.

Where power losses are approximately

Generation Allocation in Distribution Systems for Loss