Emergency Power Supply System Design Based On Photovoltaic Diesel Hybrids Power Generation

In many facilities generally poor economic underdeveloped regions in power grid, power grid is weak, the user power supply reliability is difficult to meet, particularly prominent in 0.38 kV voltage class problem. So the emergency repair of the power supply company and electric task is very outstanding, especially some important meeting or important situations and to meet the requirements of modern special load to the power supply is extremely high, thus promoting the development of the emergency power supply. Emergency Power Supply (EPS, Emergency Power Supply) belongs to exchange back-up Power, usually as a mobile Power Supply is widely used all kinds of primary and special important load, is the common ways to solve the Power Supply reliability of Power Supply company. Diesel generators of power car as backup power supply of electric power company is popular in response slow disadvantages existing in the practical engineering application, in particular, common diesel generators due to their own characteristics is not suitable for run idle for a long time to choose cold standby mode, when the line suddenly loses power, emergency power supply car human start diesel generator, wait until reach the requirements to use the power frequency and voltage amplitude, and the actual use is not immediately sending status, cannot do uninterrupted power supply, if power car is hot standby mode, affect the service life of power car itself, switching process also needs more than 10 seconds, so ordinary power car is difficult to meet the major events and political guarantee task for rapid response requirements of the emergency power supply. Later came another emergency power supply, on-line UPS power supply, rectifier and inverter output power supply first, when mains is normal mains interruption when battery inverter output power, namely the mains is normal or not, the load output by the inverter output, only in inverter fault bypass output, the actual exposed the mains normal and fault condition, inverter itself has the problem of reliability. Therefore, on the basis of the traditional emergency power supply system design of a more advanced and more reliable, faster response of the emergency power supply system is of great significance.This paper designs a set of diesel generators and an off-line UPS power supply emergency power supply system, bypass output to the load power supply when mains is normal, mains interruption instant on an off-line UPS to ensure continuity of power supply, and then start the diesel generators to ensure power supply for a long time. Innovation using photovoltaic an off-line UPS to batteries, diesel generators and photovoltaic power generation system with satisfy the abundance degree of the power supply reliability and security at the same time build clean and intelligent energy storage type emergency power supply system, uninterrupted power supply of the basic in order to meet user needs. Papers on above each link specific, strict design, guarantee the reliability of the system and the advancement and practicability.Based on emergency light diesel hybrid power generation system, and finally verified by the experiment of uninterrupted power supply, the load of the system has the high practicability. The emergency power supply can help power supply company improve power supply reliability to meet all kinds of electricity to the task, to help reduce accidents, maintain social stability.