Intelligent high-frequency switching power supply system overview
The original use of lead-acid batteries or cadmium-nickel batteries, both need to set up a special battery workers for maintenance, maintenance, but also need to be equipped with maintenance of the battery with the relevant containers, instruments, raw materials, distillation pots, distilled water and so on. After the transformation of the United States "Riches" maintenance-free batteries, usually do not need to carry out a series of maintenance work, reducing the manpower and material resources.
The original phase-controlled power supply power factor is low, generally below 0.7, the efficiency of about 60%, and after the transformation of the intelligent high-frequency switching power supply power factor of 0.9 or more, the efficiency of 94% or more.
The original phase-controlled power supply often fails, sometimes due to the inability to operate the power supply and crude oil production losses, such as a 110kV substation on 23 September 1997 due to a DC system failure caused by the overrun tripped, the station lost power, burned 3km of 35kV line, its economic losses up to more than 4 million yuan; in recent years the DC system is often a variety of failures to the oil and gas production has caused great losses, and at the same time also In recent years, the DC system often fails to cause great losses to oil and gas production, and at the same time, it also brings inconvenience to the life of residential users and great economic losses to industrial users. After transforming into intelligent high-frequency switching power supply, the DC system has not had any accident so far, and the power supply is more reliable.
The transformed intelligent high-frequency switching power supply has 48V power supply outlet, which provides power supply for the communication network of the substation without the need to purchase a special 48V power supply, reducing the investment and space occupied by the equipment.
The modified control bus has the following three ways of power supply to ensure that the control bus power supply ** is reliable and foolproof.
When the AC power is normal, the control bus can be directly supplied by the rectifier module; -- When the AC power is normal, the control bus can be directly supplied by the rectifier module.
--In the event of an AC power failure, the control bus can be supplied by the buck module.
--Powered from the battery at 90% voltage through diodes to the control bus.
Due to the stable performance, high precision, safety and reliability of the transformed intelligent high-frequency switching power supply system, it has received good results, achieved obvious social and economic benefits, and provided reliable power protection for oil and gas production and other loads in Zhongyuan Oilfield. At the same time, it also lays the foundation for the substation to realise automation.
