Power supply and distribution method for important load in first-order loads of control chamber

Abstract

The invention provides a power supply and distribution method for an important load in first-order loads of a control chamber. The basic load factor of the design capacity of an on-line uninterrupted power source power supply system, namely UPS, is set below 40%, power is supplied to the UPS via double commercial power supplies, the UPS is capable of automatic switching, unimportant loads are separated from important nodes, and power supply of the unimportant nodes is rejected from the UPS, and changed into direct power supply by a segment I or II power source. The power supply and distribution method is easy to enforce and expand, the reliability of a power supply system is improved greatly, it is ensured that commercial power is supplied to the UPS normally, the internal automatic switching function of the UPS is obviously better than a spare power automatic switching device between external bus segments, severe accidents that equipment is damaged seriously due to power failure of a control system can be avoided, power supply to the important load id ensured, the accident rate is reduced effectively, and cost of spare parts is reduced.

Description

technical field [0001] The invention belongs to the field of energy supply and distribution systems, in particular to a power supply and distribution method in which a control system in a control room belongs to an important load in a primary load. Background technique [0002] At present, the control systems in the control rooms of major production units in domestic metallurgical factories are all important loads in the first-level loads, and their power supply methods mostly use UPS (online uninterruptible power supply system) power supply mode. However, after long-term production practice, it was found that due to the unreasonable phenomenon of most of the original design capacity of UPS, coupled with the violation of power supply mode and load adjustment, it seriously affected the stability of power supply and distribution, resulting in frequent failures of the UPS power supply system. The control system loses power, and once the UPS is damaged, it will directly cause th...

AI Technical Summary

Problems solved by technology

However, after long-term production practice, it was found that due to the unreasonable phenomenon of most of the original design capacity of UPS, coupled with the violation of power supply mode and load adjustment, it seriously affected the stability of power supply and distribution, resulting in frequent failures of the UPS power supply system. The control system loses power, and once the UPS is damaged, it will directly cause the DCS (distributed control system of the power station) and other important equipment to be powered off, the unit will trip, causing multiple vicious accidents that seriously damage the equipment, and the UPS will restore power until the unit resumes normal operation Need more than 8 hours