Improving power quality by calculating voltage losses

M Borodin,T Kudinova,R Mukhametzhanov,A Psarev,E.V Shamsutdinov,V.V Sergeev,Yu.V Vankov

doi:10.1051/e3sconf/201912401041

Abstract

The problem of improving power quality (PQ) in the integrated power grid of Russia is an urgent task. The article analyzes the number of power consumers’ calls to Kromskiye District Power Networks “Orelenergo”, a branch of the PJSC “IDGC of the Center” for the issue that power quality indices go beyond the standards established in the regulations. The most common complaints of power consumers are low voltage, high voltage, voltage fluctuations. This is primarily due to physical and obsolete depreciation of the main power grid equipment of the power supply organization, disinterest of consumers and the power supply organization in maintaining power quality at the level of regulations, as well as the lack of power supply or-ganization’s software products that allow real-time voltage loss calculations and offer measures to improve the power quality. The presented algorithm, based on calculations of voltage losses, suggests measures to improve the power quality. The application of the proposed algorithm of the program will allow to increase PQ by means of timely determination of voltage losses.

Highlights

According to the Civil Code of the Russian Federation, the electric power supplied to consumers must meet the requirements of state standards and power supply contracts
In order to prevent consumers’ complaints about the power quality distortion, the power supply company can determine the likely section with a power quality distortion; it isn’t necessary to perform "global" analyzes, but enough to calculate electric power losses of existing transmission lines
It is important to calculate the power loss, which is necessary for the feasibility study of future activities aimed at improving power quality

Summary

Introduction

According to the Civil Code of the Russian Federation, the electric power supplied to consumers must meet the requirements of state standards and power supply contracts. The responsibility of the power supply organization to consumers for the reliability of providing them with electric power and its quality, in accordance with technical regulations and other mandatory requirements, is defined in the “Federal Law on Electric Power Industry”. According to [1-5], consumers need to be supplied with electric power of appropriate quality. Power quality (PQ) is one of the factors affecting the work of electrical receivers, switching devices, etc. The authors in [6-14] indicate that Russia has created a large number of regulations that establish requirements for PQ, but in practice they are not always effective. Distortion of power quality indices (PQI) leads to undersupply of products, changes in its parameters, reduction in the number of produced products, equipment downtime due to breakdowns, failure of switching equipment of power supply companies [1523], etc. Improving of PQ in power grids of power supply organizations is an urgent task

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Conclusion