The power factor in electrical systems is of paramount importance because the influence on economic cost energy consumption as well quality requested by grid. Low affects both consumers and suppliers due to an increase current requirements for installation, bigger sizing industrial equipment, conductor wiring that can sustain higher currents, additional voltage regulators equipment. In this wor...

In this paper, a novel control method for photovoltaic converter connection to the national gridis presented, so in addition to the injection control by solar arrays to the grid, this method cancompensate reactive power and harmonics in the load current. The system will be connected inparallel between the grid and load. The proposed system supplies all load power consumption(including active po...

The system of automatic control the reactive power factor enterprise's supply is considered, in which one part transformer substations equipped with adjustable capacitor units, and second not. Its advantage comparison shown, firstly, lower requirements for its error and, secondly, calculation consumer supplier electricity made taking into account ratio energy to active energy. An estimate regul...

The objective of this study is to analyse the most appropriate power factor billing methods for large power consumers. It compares average power factor (AVPF) vizá – viz coincidental power factor (CPF), which is currently being used for billing large power consumers. The study involved downloading data from large power energy meters for both energy and demand registers recorded for the past six...

We analyze investments in gas fired power plants under stochastic electricity and gas prices. A simple but realistic two-factor model is used for price processes, enabling analysis of the value of operating flexibility, the opportunity to abandon the capital equipment, as well as finding thresholds for energy prices for which it is optimal to enter into the investment. Our case study, using rea...

Industries having poor power factor face the problem of reduced power quality and increased electricity charges. To improve the power factor, capacitor banks of appropriate KVAR ratings are to be placed. In this paper the inductive loads in a sugar mill are investigated and suitable power factor improvement capacitors are recommended. The effect of low power factor on distribution losses and KV...