Protection unit of prepayment device

A protection unit and prepaid technology, which is applied in the direction of measuring devices, circuit devices, emergency protection circuit devices, etc., can solve the problems that the installation is far away from the user's substation and the user cannot know in time, so as to realize the protection function and improve the reliability of power supply Effect

Inactive Publication Date: 2012-03-28
张敬敏 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the prepaid device is installed far away from the user's substation, the protection unit and prepaid meter's over-current protection action, short-circuit protection...

Method used

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  • Protection unit of prepayment device
  • Protection unit of prepayment device
  • Protection unit of prepayment device

Examples

Experimental program
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Embodiment Construction

[0023] The prepaid device protection unit of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] as attached figure 1 As shown, the prepaid device protection unit of the present invention has a structure including an input module 1, a display module 2, a voltage transformer 3, a voltage acquisition module 4, a current transformer 5, a current acquisition module 6, a zero sequence transformer 7, a zero Sequence current acquisition module 8, prepayment meter 9, memory 10, CPU11, switching power supply 12, UPS13, prepayment device vacuum switch 14, wireless signal transmitting module 15, wireless receiving module 16 and signal driving circuit 17, the above-mentioned voltage transformer 3 The voltage acquisition module 4 is connected with the CPU 11, the current transformer 5 is connected with the CPU 11 through the current acquisition module 6, and the zero sequence transformer 7 is connected with the CPU 11 through the ...

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PUM

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Abstract

The invention provides a protection unit of a prepayment device. The structure of the protection unit comprises a voltage transformer, a voltage collection module, a current transformer, a current collection module, a prepayment ammeter, a memory, a CPU (central processing unit), a switching power supply, a prepayment device vacuum switch and a signal drive circuit, wherein the voltage transformer is connected with the CPU through the voltage collection module; and the current transformer is connected with the CPU through the current collection module; and the prepayment ammeter, the memory, the switching power supply, the prepayment device vacuum switch and the signal drive circuit are respectively connected with the CPU. According to the invention, the integrated protection unit of the prepayment device is designed by using elements of the prepayment device, comprising the transformers and a circuit breaker and the like, and has the functions of short-circuit protection, overcurrent protection, zero sequence overcurrent protection, wireless communications and the like, so that the prepayment device has protection function. In addition, by using the protection unit of the prepayment device provided by the invention, while the investment of prepayment clients is reduced, the function of protecting the equipment of the clients can be realized, and the reliability of power supply is also improved at the same time.

Description

(1) Technical field [0001] The invention relates to a prepaid device, in particular to a prepaid device protection unit. (2) Background technology [0002] In order to meet the needs of power consumption management, the power supply department promotes the installation of 10kV high-voltage prepaid metering devices for users. The prepaid metering device is suitable for outdoor installation on poles. The main body is a high-voltage vacuum circuit breaker, and a high-voltage metering transformer is embedded inside, with holes on the side , lead the secondary line of the transformer and the secondary control signal line of the circuit breaker into the side control box, the side hole is waterproof and sealed and connected with the side control box, and the prepaid energy meter is placed in the side control box . When the user's pre-purchased electricity charge reaches the set value, the prepayment meter node acts, and the circuit breaker of the prepayment device trips to cut off...

Claims

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Application Information

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IPC IPC(8): H02H3/32G01R11/02
Inventor 张敬敏陈鹏程钟海峰巍玮刘炼
Owner 张敬敏
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