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Intelligent dual-power switching device

A switching switch and dual power supply technology, which is applied in the field of intelligent dual power supply switching devices, can solve problems such as unreliable locking, poor working reliability, and power accidents, so as to improve working reliability and safety performance, and facilitate transportation and installation , The effect of improving the integrated performance

Inactive Publication Date: 2009-03-11
HONGXIU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional dual power switching mechanism uses two high-voltage switch cabinets plus a set of extremely complicated electrical interlocking devices to prevent parallel operation of the two circuits
This kind of dual power supply device has the following three major defects: (1) Unreliable locking: At present, the reliability of electrical interlocking is too low, and it is strictly forbidden to use it. There is no unified design specification standard for mechanical interlocking devices, and it can only be designed and modified by each locality.
(2) The operation is complicated, and it is easy to jam, causing electric accidents; (3) The investment is large, and two switch cabinets need to be purchased, and then the locking device is designed, and then refitted to the switch cabinet
The disadvantage of this dual power switching mechanism is poor reliability and may lead to serious accidents; for example, when the main power supply circuit is powered off for routine maintenance, the coil in the circuit breaker connected to the main power may be burned out, However, the circuit in the circuit breaker remains on, at this time, the other circuit breaker in the dual power switching mechanism will immediately connect to the backup power supply to continue power supply, which will cause the main power supply circuit that should have been powered off. It is also live, which can easily lead to electric shock accidents for maintenance personnel who overhaul the main power circuit
In addition, due to the need to purchase two circuit breakers, the investment is relatively large

Method used

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Examples

Experimental program
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Embodiment 1

[0022] Figure 1 to Figure 4 A specific embodiment of the invention is shown in which figure 1 It is a structural schematic diagram of the present invention; figure 2 Yes figure 1 The schematic diagram of the structure of the intelligent dual power switching device shown in the state of being connected to the main power supply; image 3 Yes figure 1 The schematic diagram of the structure of the intelligent dual power switching device shown in the state of being connected to the main power supply; Figure 4 Yes figure 1 The working principle diagram of the intelligent dual power switching device shown.

[0023] This embodiment is an intelligent dual power supply switch device, see figure 1 , including an isolating switch 1, a main circuit breaker 2 for electrical connection with the main power supply, and a secondary circuit breaker 3 for electrically connecting with the backup power supply; the isolating switch 1 includes a main terminal 11, an auxiliary terminal 12, an...

Embodiment 2

[0031] Figure 5 It is a schematic diagram of the second structure of the present invention, showing the second specific embodiment of the present invention.

[0032] This embodiment is basically the same as Embodiment 1, except that the device also includes a metal casing 4; the incoming line column 22 of the main vacuum circuit breaker 2, the incoming line column 32 of the auxiliary vacuum circuit breaker 3 and the disconnector 1 The outlet post 13 of the housing is exposed, and the isolating switch main body 10 , the main vacuum circuit breaker main body 20 and the auxiliary vacuum circuit breaker main body 30 are all arranged in the housing 4 . The left and right sides of the housing 4 are respectively provided with a metal door 41, the bottom of the housing 4 is provided with slide rails 42 along the left and right directions, and the lower parts of the main vacuum circuit breaker 2 and the auxiliary vacuum circuit breaker 3 are provided with slide rails 42 Matching pull...

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Abstract

The invention discloses an intelligent double-power-supply switching switch device which comprises an isolating switch, a main breaker which is used for electrically connecting a main power supply, and an auxiliary breaker which is used for electrically connecting a spare power supply, wherein the isolating switch comprises a main binding post, an auxiliary binding post, an outgoing line post, and an isolating knife which is electrically connected with the outgoing line post, the outgoing line post of the main breaker is electrically connected with the main binding post of the isolating switch, and the outgoing line post of the auxiliary breaker is electrically connected with the auxiliary binding post of the isolating switch. The invention has the advantages of high operation reliability and good safety.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical switches, and in particular relates to an intelligent dual-power switching device. Background technique [0002] In the power network, there are many users who have high requirements on the reliability of power supply, such as coal mines, textile mills and oil refineries. Once a power outage occurs in these units, it will bring significant economic losses or even casualties to the unit. Therefore, in these In the power supply system of the unit, it is necessary to have the main power supply and the backup power supply. When the main power supply fails, the backup power supply must be put into power immediately to restore the power supply. Switch manually or automatically. [0003] The traditional dual power switching mechanism uses two high-voltage switch cabinets plus a set of extremely complex electrical interlocking devices to prevent parallel operation of the two circuits. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/30H01H33/66H01H33/662H01H33/666H01H33/52H02J9/06
CPCY02B70/30Y04S20/20
Inventor 郑文秀
Owner HONGXIU ELECTRIC
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