Dual-power rapid switching control device and method

A fast switching and control device technology, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve problems such as production disaster losses, and achieve the effect of improving switching speed and shortening busbar residual voltage decay time.

Active Publication Date: 2010-05-19
CHINA UNIV OF PETROLEUM (BEIJING) +2
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Problems solved by technology

However, due to the complexity of the system, the success rate of the main switching has a certain randomness. When the main switching cannot be realized, the protection switch of the motor will trip because the protection time of the motor exceeds 500

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  • Dual-power rapid switching control device and method
  • Dual-power rapid switching control device and method
  • Dual-power rapid switching control device and method

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Embodiment Construction

[0027] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0028] figure 1 It is a schematic structural diagram of the dual power supply fast switching control device of the present invention. Such as figure 1 As shown, the main structure of the dual power supply fast switching control device of the present invention includes a controller and a controllable braking resistor assembly, and the controller is used to control the bus tie circuit breaker CB when a bus is de-energized. 33 Connect the first bus bar to the second bus bar so that the other bus bar supplies power to the load carried by the de-energized bus bar, and the controllable braking resistor component is connected to the controller to quickly attenuate the residual voltage of the de-energized bus bar according to the controller's instructions. Specifically, the first bus B1 connected to the first load M1 and the...

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Abstract

The invention relates to a dual-power rapid switching control device and a method. The dual-power rapid switching control device is composed of a controller which is used for controlling a bus coupler to be connected with a first bus and a second bus and is connected with a controllable brake resistor component for attenuating residual voltage of a non-voltage bus rapidly, wherein the controllable brake resistor component comprises a first bus rapid switch, a second bus rapid switch and a resistor, one end of the first bus rapid switch is connected with the first bus, and the other end thereof is connected with the resistor, and a control end thereof is connected with the controller; and one end of the second bus rapid switch is connected with the second bus, and the other end is connected with the resistor, and a control end thereof is connected with the controller. When master switch can not be realized, the invention uses the controllable brake resistor component to adjust the residual voltage attenuation characteristic of the bus on line to shorten the attenuation time of the bus residual voltage so as to realize the mode of double rapidness and improve the switching speed of the dual-power power supply system.

Description

technical field [0001] The invention relates to a power switching device and method, in particular to a dual power fast switching control device and method. Background technique [0002] Continuous and reliable power supply is the basic condition for the safe operation of electrical equipment. Therefore, occasions that require high power supply reliability are generally equipped with two power supplies, and the successful and fast switching between the two power supplies is the key to continuous and uninterrupted power supply. Due to external or internal reasons such as lightning strikes, short circuits, low-frequency oscillations, and load circuit failures, large and medium-sized industrial enterprises such as petrochemical, metallurgical, and power plants often experience abnormal power outages, large voltage fluctuations, or short-term power outages (commonly known as "shock power") , Due to the particularity of the technological process of metallurgical and petrochemical...

Claims

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Application Information

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IPC IPC(8): H02J9/06
CPCY02A30/14
Inventor 梁志珊凌玲宋安阳
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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