Method and system for powering on and off multiple electrical units

Abstract

An embodiment of the invention discloses a method for powering on and off multiple electrical units. The method comprises steps as follows: the switching state of a main switch is detected; each subordinate control unit controls a contained delay assembly according to the switching state of the main switch to perform delay processing according to preset delay time; each electrical unit is powered on or off after the preset delay time is up according to the delay processing result of each subordinate control unit connected with the electrical unit. An embodiment of the invention further discloses a system for powering on and off the multiple electrical units. With the adoption of the method and the system, the impact force on a power grid during powering on and off of the multiple electrical units can be reduced or avoided, the operation is convenient, and the efficiency is improved.

Description

technical field [0001] The invention relates to the field of electronics and the field of re-inspection assembly line, in particular to a method and system for powering on and off multiple electrical units. Background technique [0002] The traditional power supply and disconnection network is an electronic or electrical system composed of multiple relatively independent electrical units. In this network, all power-consuming units absorb or release energy from the AC network, and the AC input terminals of each unit are connected to the same grid. There are generally two ways to realize the power-on or power-off of the AC voltage switch of this system: one is to realize the power-on or power-off operation of the entire system through a general switch; the other is to manually close or disconnect each The switch of the electrical unit realizes power-on or power-off of the system. [0003] However, there are deficiencies in the two existing systems. In the first method, all d...

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Problems solved by technology

[0003] However, there are deficiencies in the two existing systems. In the first method, all devices are powered on and off at the same time, which has a very large impact on the power grid. Especially when there are a large number of devices, the circuit may be caused by the large impact current. The circuit breaker trips, or causes serious grid voltage distortion, causing pollution to the grid; the second method adopts the method of powering on the subsequent electrical units one by one, although it can disperse and reduce the inrush current, but it is very inconvenient to operate. It is necessary to operate multiple units at any time, which increases the workload of the operator and causes the problem of low work efficiency. Similarly, the method of powering off the electrical units of the subsequent stage also makes the operation very inconvenient and increases the operator's workload. Workload, low work efficiency

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