Parallel changeover control system with closed-loop switch-off protection

A technology of conversion control and selection, which is applied in the direction of emergency protection circuit devices, protection that responds to overcurrent, emergency protection devices that automatically disconnect, etc., and can solve problems such as multiple fault points, rewiring required for function upgrades, and complicated wiring. problems, to achieve the effect of protecting lines and loads

Active Publication Date: 2014-04-02
SCHNEIDER WINGOAL TIANJIN ELECTRIC EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the power conversion system where the PLC and the relay are overlapped has disadvantages such as complicated wiring, many fault points, and rewiring required for function upgrades.

Method used

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  • Parallel changeover control system with closed-loop switch-off protection
  • Parallel changeover control system with closed-loop switch-off protection
  • Parallel changeover control system with closed-loop switch-off protection

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Embodiment Construction

[0034] The parallel conversion control system provided by the present invention with closed loop selection protection will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Take the form of two incoming lines and one female connecting line as an example, figure 1 The circuit block diagram of the parallel conversion control system of the band closed ring selection protection provided for the present invention, as figure 1 As shown, the parallel conversion control system with ring closing protection provided by the present invention includes: a first executive switch 1, a first adapter 10, a second executive switch 2, a second adapter 20, a third executive switch 3, a third The adapter 30, the controller 4, and the first transformer H1, the second transformer H2 and the third transformer H3; wherein:

[0036] The input end of the first executive switch 1 is connected with the first power supply incoming line, the outpu...

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Abstract

A parallel changeover control system with closed-loop switch-off protection comprises a first executing switch, a first adapter, a second executing switch, a second adapter, a third executing switch, a third adapter, a controller, a first transformer H1, a second transformer H2 and a third transformer H3. The parallel changeover control system with closed-loop switch-off protection, which is provided by the invention, has the functions of automatic switching and automatic recovery, automatic switching and non-automatic recovery, manual, local and remote node control, remote control and the like as well as a parallel changeover function with closed-loop switch-off protection. Parallel changeover can ensure that two routes of power supplies can be switched without power interruption, the closed-loop switch-off function can ensure that a circuit breaker can be instantly switched off when current is overhigh in the process of parallel changeover, and thereby a circuit and loads can be protected.

Description

technical field [0001] The invention belongs to the technical field of automatic transfer switch control, and in particular relates to a parallel transfer control system with closing ring selection protection. Background technique [0002] Due to different application occasions, the functions and logic of the power conversion system are also different. The traditional control system uses PLC and relays to overlap, such a system can generally realize the functions of automatic switching and automatic recovery, and automatic switching without automatic recovery. However, in some industries that require high continuity of power supply, such as petrochemical, metallurgy, telecommunications, hospitals, etc., once the power is cut off, it will cause great losses. Therefore, such occasions require a power conversion system with uninterrupted switching. In addition, the power conversion system where the PLC and the relay are overlapped has disadvantages such as complicated wiring,...

Claims

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Application Information

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IPC IPC(8): H02J9/06H02H3/08H02H3/04
Inventor 张凌华包慧杰梁亚娜孔令辉沈飞飞肖平
Owner SCHNEIDER WINGOAL TIANJIN ELECTRIC EQUIP
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