Distribution switching apparatus

A switching device and relay technology, applied in circuits, electrical switches, electrical components, etc., can solve the problem of insurmountable contradiction between control delay and correct control logic, achieve reliable and efficient control, ensure accuracy, and have wide application prospects Effect

Active Publication Date: 2016-01-13
长沙高升电子电器科技有限公司
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Problems solved by technology

[0005] The invention provides a power distribution switching device to solve the technical problem that the contradiction between the control delay and the correctness of the control logic is difficult to overcome in the power distribution switching process to control the unbalanced three-phase load

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0040] The preferred embodiment of the present invention provides a power distribution switching device for balanced control of three-phase load imbalance in power distribution circuits. This embodiment solves the traditional problem of using a mechanical interlock mechanism in the power distribution switching device The electronic detection logic control method leads to the insurmountable problem of the contradiction between the control delay and the confirmation of the correct control logic during the power supply switching process of the unbalanced three-phase load. refer to figure 1 , the power distribution switching device in this embodiment includes:

[0041] The base 10 is provided wit...

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Abstract

The invention discloses a distribution switching apparatus comprising a pedestal. An accommodation cavity, a support pad, a slide plate, followers of control handles, and three relays corresponding to all phase lines of a three-phase power supply circuit are arranged in the pedestal. First terminals of controlled ports of the three relays are connected with all phase lines of the three-phase power supply circuit; second terminals of the controlled ports of the three relays are connected to a power supply single-phase circuit jointly; and control coils of the three relays are connected with a distribution controller to realize automatic distribution state conversion. Besides, a mechanical anti-short-circuit mechanism for carrying out interlocking on motions of the three relays is arranged inside the pedestal. A phenomenon that the distribution controller needs determination from electronic control logic and thus control is delayed can be avoided, so that conflict between delayed control and control logic correctness determination during the power supply switching process of three-phase load unbalanced can be eliminated. Therefore, correctness of the control logic can be guaranteed and control delay caused by electronic detection during the distribution switching process can be prevented; and the control can be realized reliably and efficiently.

Description

technical field [0001] The invention relates to the field of power supply control, in particular to a power distribution switching device for unbalanced and balanced power distribution of three-phase loads. Background technique [0002] With the continuous improvement of people's living standards, a large number of high-power single-phase household appliances, such as: air conditioners, electric water heaters, rice cookers, microwave ovens, ovens, etc., have entered ordinary households. These household appliances bring people comfort, convenience and fast life. , It also has a certain impact on the safety and economic operation of the low-voltage power supply system of the power supply department. Especially in rural areas, due to failure to pay attention to the balanced distribution of single-phase loads to three-phase power supply lines, resulting in excessive loads on a certain phase or two phases, thus aggravating the unbalanced three-phase load. [0003] Due to the unb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26H01H9/26
CPCY02E40/50
Inventor 孙万红姚攀欧阳杰
Owner 长沙高升电子电器科技有限公司
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