Energy efficiency improvement of 0.4 kV power supply systems in the far North districts

The article considers the method of energy efficiency improvement of 0.4 kV power supply systems for the enterprise located in the North of the Krasnoyarsk territory. The theoretical substantiation of the necessity of reactive power compensation is presented. The method for reducing reactive power in power supply networks through the use of devices compensating reactive power is proposed. The use of this method allowed reducing energy costs, as well as decreasing the level of reactive power in the network by 48.5% and 45% for the 1^st and the 2^nd inputs, respectively. Also, while using reactive power compensation devices for power supply networks, the following indicators can be achieved: the increase in the throughput capacity of electric networks, the reduction in active power losses and the rational electric energy use.