Breaker controller with dual-power-source switching function, switching system and switching method
A dual-power switching and dual-power conversion technology, which is applied in the integration of power network operating systems, circuit devices, emergency power supply arrangements, etc., can solve the problems of inconvenient installation and maintenance, troublesome wiring, complex structure, etc., and achieve cost savings, structure Simple, Reliable Effects
Active Publication Date: 2014-12-17
ZHEJIANG CHINT ELECTRIC CO LTD
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Problems solved by technology
In addition to the independent dual power supply controller, there are many types of components, the structure is complex, the wiring is troublesome, and it is very inconvenient to install and maintain
Method used
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[0047] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments. refer to figure 2 , 3 as shown,
[0048] The present invention discloses a dual power switching system comprising two intelligent circuit breakers 1, figure 2 Each circuit breaker 1 includes a circuit breaker controller (also known as an intelligent release) with a microprocessor or a single-chip microcomputer such as an MCU as the core. The controller includes a control module 9 composed of an MCU. The current information of the main circuit collected by the current transformer on the outgoing line side of the circuit breaker is analyzed and processed. The controller also includes a switch monitoring module 11 coupled with the outgoing line of the circuit breaker for monitoring the operating parameters of the circuit breaker. The power acquisition module coupled with the secondary side of the current transformer on the line or outlet side,...
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The invention discloses a system and a control method which utilize a controller of an intelligent breaker to realize switching between dual power sources. The controller comprises a switch monitoring module, an electric quantity acquisition module, a signal processing unit and a bus interface module, wherein the switch monitoring module is coupled to an outlet circuit of the breaker, the electric quantity acquisition module is coupled to an inlet circuit of the breaker or a secondary side of a current mutual inductor on the outlet side of the breaker, the signal processing unit is coupled to the electric quantity acquisition module and transmits the processed main circuit voltage and current data to an MCU (microprogrammed control unit), and the bus interface module is communicated with external equipment. The MCU is respectively coupled to the switch monitoring module, the electric quantity acquisition module and the bus interface module, and commands and controls the operation states of the breaker by analyzing and calculating the electric quantity acquisition information or the communication information from the bus interface module to realize the break or make operation of the breaker or troubleshooting. The breaker controller with the dual power-sources-switching function needs no additional dual power source control device, accordingly is simpler in structure and convenient to assemble and maintain.
Description
technical field [0001] The present invention relates to the field of low-voltage electrical appliances in power distribution systems, more specifically, to a circuit breaker controller with dual power supply conversion function, a dual power supply switching system coupled by two such circuit breaker controllers through communication lines, and its control method. Background technique [0002] The dual-power automatic conversion device is an important electrical appliance in the power distribution system. Generally, the automatic conversion device is connected to the normal power supply and the backup power supply of the power supply system, and can automatically switch between the two power sources to ensure the continuity of power supply to the load. and reliability. figure 1 Shown is an existing CB-level dual power conversion device composed of a universal circuit breaker, which is mainly composed of the following parts: [0003] Two universal circuit breakers 1; [00...
Claims
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IPC IPC(8): H02J13/00H02J9/06
CPCY04S20/248Y02B90/222Y02B70/3291Y04S20/12Y02B70/30Y02B90/20
Inventor 陈建余肖磊刘敏马世刚
Owner ZHEJIANG CHINT ELECTRIC CO LTD