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Countryside low-voltage electric distribution network automatization controlling device and its method

A low-voltage distribution network, automatic monitoring technology, applied in the direction of circuit devices, electrical components, information technology support systems, etc., can solve the problems of distribution transformer overload temperature rise, power facilities being stolen, damaged, burned, etc., to achieve The effect of reducing labor intensity

Inactive Publication Date: 2006-01-18
肖冬冰
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Problems solved by technology

[0002] In the rural low-voltage power grid, the phenomenon of theft and damage of power facilities is very serious, and the current voltage and three-phase current of the distribution transformer must be measured manually on site. In this way, the operation status of the distribution transformer cannot be remotely monitored and cannot Know in time whether the three-phase load of the line is balanced and whether the voltage is qualified. The phenomenon that the distribution transformer is overloaded and the temperature rises too high to cause burning occurs from time to time, and even the distribution transformer is stolen in some places. In addition, if the residual current action protector trips After that, the manager will not be able to know in time, so that the power transmission cannot be resumed in time

Method used

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  • Countryside low-voltage electric distribution network automatization controlling device and its method
  • Countryside low-voltage electric distribution network automatization controlling device and its method
  • Countryside low-voltage electric distribution network automatization controlling device and its method

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Embodiment Construction

[0030] figure 1 The circuit structure of the rural low-voltage distribution network automation monitoring device shown in the present invention is mainly divided into (Part A) distribution transformer state detection unit, (B part) three-phase current-voltage sampling unit, (C part) data acquisition unit , (Part D) MCU program control unit, (Part E) GSM communication unit, (Part F) relay unit and (Part G) power supply circuit.

[0031] The distribution transformer state detection unit is mainly composed of 8 photocouplers (model P521), these photocouplers can detect the abnormal operation status of 1-8 distribution transformer equipment according to the needs, so that the first part of the microprocessor AT89S51 P1.0-P1.7 pins become low level, so that the microprocessor executes the relevant program, when the residual current action protector trips or any one or several phases of the three-phase input voltage of the distribution equipment A, B, C When the line is dropped, or...

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Abstract

This invention relates to a automatic device for controlling the low-voltage power distribution net in country, which comprises upper supervisor and inferior machine, its circuit structure mainly includes GSM communication unit, single sheet machine process controlling unit, data-collecting unit, three-phase current-voltage sample collecting unit, relay unit, collating unit and power source circuit. Adopting this device not only can remote control the operation state of low-voltage power distribution net in country, but be suitable for checking and controlling the power load for consumer.

Description

technical field [0001] The invention relates to an automatic monitoring device and method for a rural low-voltage distribution network. Background technique [0002] In the rural low-voltage power grid, the phenomenon of theft and damage of power facilities is very serious, and the current voltage and three-phase current of the distribution transformer must be measured manually on site. In this way, the operation status of the distribution transformer cannot be remotely monitored and cannot Know in time whether the three-phase load of the line is balanced and whether the voltage is qualified. The phenomenon that the distribution transformer is overloaded and the temperature rises too high to cause burning occurs from time to time, and even the distribution transformer is stolen in some places. In addition, if the residual current action protector trips After that, the manager cannot know in time, so that the power transmission cannot be resumed in time. Contents of the inv...

Claims

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Application Information

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IPC IPC(8): H02J13/00
CPCY02B90/2661Y04S40/127Y02E60/7861Y02B90/20Y02E60/00Y04S40/126
Inventor 肖冬冰
Owner 肖冬冰
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