Analysis of the mode of operation of the electrical network with the development of measures to compensate for reactive power.

Abstract

The article identifies the main measures for energy saving, among which the need to develop and implement methods and devices for reactive power compensation. It was noted that the sign of energy systems of industrial enterprises is irrational management of reactive power flows, the presence of a wide range of harmonic oscillations in the network, violation of temperature modes of individual components of electrical equipment, which leads to reduced equipment life, increased costs. The main reasons for the low value of the power factor in energyintensive industries are the presence and use in technological processes of a large number of induction motors, the power factor of which according to passport data is 0.8 under nominal operating conditions. It is noted that in practice there are often cases when the engines run in modes other than nominal - they are underloaded or overloaded, there are frequent starts of engines under load and their long operation at idle. These modes of operation of induction motors are characterized by an increased level of reactive power. The low value of the power factor leads to increased losses in the conductors, which are directly proportional to the "square" of reactive power, which requires the use of conductors of increased cross-sectional area. The paper proposed design solutions for energy saving in existing technological schemes of power supply: by analyzing the existing situation and calculating the real value of the power factor were calculated and selected reactive power compensation units.