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Power switching circuit and automatic disconnection and connection intelligent circuit breaker

A smart circuit breaker and power switching technology, which is applied to circuit devices, emergency power arrangements, electrical components, etc., can solve problems such as potential safety hazards and waste of electric energy

Inactive Publication Date: 2017-01-04
ZHEJIANG ZHONGFU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the automatic opening and closing intelligent circuit breaker in the prior art takes power directly from the customer's ammeter. When the circuit breaker is closed and there is no load, the customer's ammeter and the circuit breaker end are easy to form a parallel circuit. , so that the phase sequence leakage current exceeds 0.2mA, which causes a waste of electric energy and also has potential safety hazards

Method used

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  • Power switching circuit and automatic disconnection and connection intelligent circuit breaker
  • Power switching circuit and automatic disconnection and connection intelligent circuit breaker
  • Power switching circuit and automatic disconnection and connection intelligent circuit breaker

Examples

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Embodiment 1

[0036] Such as figure 1 Shown: this embodiment provides a power switching circuit 1, which is applied to an automatic opening and closing intelligent circuit breaker; the power switching circuit 1 includes a control unit 11 and a switching unit 12; the automatic opening and closing intelligent circuit breaker completes closing After the operation, the control unit 11 sends a first control signal to the switching unit 12, so that the switching unit 12 switches the power supply of the automatic opening and closing smart circuit breaker from the first power supply to the second power supply; when the automatic opening and closing smart circuit breaker During the opening and closing operation or after the opening operation is completed, the control unit 11 sends a second control signal to the switching unit 12 so that the switching unit 12 switches the power supply of the automatic opening and closing smart circuit breaker from the second power supply to The first power supply.

[00...

Embodiment 2

[0046] This embodiment provides an automatic opening and closing intelligent circuit breaker, such as image 3 Shown: Including power switching circuit 1 and automatic opening and closing actuator 2. The automatic opening and closing actuator 2 executes the opening operation when it receives the opening control signal sent by the power switching circuit 1, and executes the closing operation when it receives the closing control signal sent by the power switching circuit 1.

[0047] The above technology belongs to the prior art. The power supply network controls the closing and opening operations through remote signals. When the user owes the fee, the opening can be controlled remotely; when the user owes the fee, the closing can be controlled remotely.

[0048] Specifically, for the automatic opening and closing smart circuit breaker in this embodiment, the power switching circuit sends the first control signal to the switching unit 12 after the automatic opening and closing smart c...

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Abstract

The invention discloses a power switching circuit and an automatic disconnection and connection intelligent circuit breaker. When the automatic disconnection and connection intelligent circuit breaker completes the operation of connection, the power switching circuit sends a first control signal to a switching unit so that the switching unit switches the power supply of the automatic disconnection and connection intelligent circuit breaker from a client's power supply to a power grid power supply. Therefore, all electrically controlled parts of the automatic disconnection and connection intelligent circuit breaker can be provided with power grid power supply after the operation of connection, from which stable power can be supplied. During the disconnection and connection process or after the disconnection operation of the automatic disconnection and connection intelligent circuit breaker, a second control signal is sent to the switching unit so that the switching unit switches the power supply of the automatic disconnection and connection intelligent circuit breaker from a power grid power supply to a client's power supply. When the automatic disconnection and connection intelligent breaker is in a connection state and does not have load, the phase sequence leakage current is less than 0.2mA, which means less power consumption and increased circuit security.

Description

Technical field [0001] The invention relates to the technical field of smart circuit breakers, in particular to a power switching circuit and an automatic opening and closing smart circuit breaker. Background technique [0002] According to the needs of my country's power supply network intelligence, the State Grid Corporation of China requires the power supply network to be intelligent. Therefore, the terminal actuator of the power supply network, the circuit breaker, is required to execute the upper-end signal combined with the smart meter to realize the functions of automatic tripping and power failure for arrears, and automatic closing and power transmission for charging. [0003] However, the circuit breakers with automatic opening and closing functions currently used in the market mainly take power from the customer's meter (customer power supply), whether it is after closing or opening. However, the customer's electric meter and the circuit breaker end easily form a paralle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H01H71/10
CPCH01H71/10H02J9/061H02J9/068
Inventor 潘永强倪向宇倪向勇
Owner ZHEJIANG ZHONGFU ELECTRIC