Ensuring an Uninterrupted Power Supply to Modern Autonomous Facilities

Abstract

Ensuring continuity and reliability in the power supply systems of autonomous special-purpose facilities is an urgent task. A promising solution is the use of the latest types of batteries in the power supply systems of such facilities based on static uninterruptible power supplies. The requirements for the power supply systems of such facilities have a number of specific conditions due to the characteristics of these facilities. The aim is to develop power supply systems using static uninterruptible power supplies (UPS) based on fully controlled current inverters. Analysis of the existing power supply systems showed the imperfection of such schemes and does not provide complete independence of the facilities from external power supply. Comparative characteristics of isolated power supply systems built on the basis of diesel generator sets (DGS) and UPS are given. Both types of sources are currently used in power supply circuits for remote objects. The importance of the task is to ensure the reliability of power supply, which is ensured when using modern types of batteries and diesel generator sets can be completely excluded from the power supply scheme. A technical solution has been proposed - the use of a UPS made according to the «online» technology with the conversion of the number of phases of the supply voltage «three in one». A feature of the considered power supply system using a UPS is its complete independence from the number of parallel operating UPSs, since synchronization with the network is performed at constant voltage.