Double-power-supply centralized control device

Abstract

The invention belongs to the technical field of controllers, and relates to a double-power-supply centralized control device. A central controller is electrically connected with double-power-supply controllers 1-64 through industrial 485 buses. According to each double-power-supply controller, a central processing unit is electrically connected with a perpetual calendar clock circuit, a liquid crystal display, a conversion switching circuit, a voltage frequency and phase sequence detection circuit of a common power supply, a voltage frequency and phase sequence detection circuit of a standby power supply, a power supply circuit, an emergency tripping circuit, a position detection circuit, and an RS485 communication circuit; the central processing unit receives detection signals and controls switching between the command and standby power supplies, tripping, oil engine start-stop, and unloading output; and the RS485 communication circuit can complete remote setting of internal record or control parameters of the central processing unit and carry out emergency tripping and switching between manual and automatic control modes quickly. The double-power-supply centralized control device of the invention has the advantages of accurate detection, flexible control, reliable electricity utilization and real-time recording, and is used in airports, high-speed rails, chemical industry, metallurgy, shopping malls, hospitals, post and telecommunications, fire fighting and other important places in need of electricity.

Description

technical field [0001] The invention belongs to the technical field of controllers, in particular to a dual power supply centralized control device. Background technique [0002] At present, dual power supply controllers are used in some important occasions that require uninterrupted power, such as the primary load required in building electrical. The continuity of power supply is extremely important for some special user departments, such as hospitals, airports, etc., and has been widely used in high-rise buildings, post and telecommunications, coal mines, military facilities, large industrial assembly lines and firefighting and other places that require uninterrupted power supply. In order to ensure the reliability and continuity of power supply, two power sources are generally used. One power supply is the common power supply for normal power supply, and the other is the backup power supply. Once the common power supply fails to work, the backup power supply is required t...

AI Technical Summary

Problems solved by technology

However, the current dual-power controllers generally have few detection indicators, poor control accuracy, high user costs, few functions, and no control parameter records in the control process, which makes it difficult to analyze the cause of the fault according to the fault parameters, so as to improve the replacement of control equipment or use equipment, and the dual power controller is only used for the control of a single power device

Images