CN204391901U

CN204391901U - A kind of low-voltage circuit breaker intelligent controller based on CAN

Info

Publication number: CN204391901U
Application number: CN201520094269.0U
Authority: CN
Inventors: 邵鹤帅; 赵建洋; 庄军
Original assignee: HUAI'AN FUN SOFTWARE Co Ltd; Huaiyin Institute of Technology
Current assignee: HUAI'AN FUN SOFTWARE Co Ltd; Huaiyin Institute of Technology
Priority date: 2015-02-11
Filing date: 2015-02-11
Publication date: 2015-06-10
Anticipated expiration: 2025-02-11

Abstract

A kind of low-voltage circuit breaker intelligent controller based on CAN of the utility model, mainly comprises master control processing module, electric energy metering module, CAN, data acquisition module.Intelligent controller gathers current parameters information by acquisition module, the data of collection are sent to electric energy metering module, each parameter is measured, metric results is transmitted main control module through spi bus, carry out storing and resolving to acquisition data, send control command and alarm signal, main control module realizes communicating by CAN and host computer, send data to Surveillance center, facilitate administrative staff carry out data processing, analysis in Surveillance center and directly observe.A kind of low-voltage circuit breaker intelligent controller based on CAN of the utility model has the advantages such as low cost, high accuracy, intellectuality.

Description

A kind of low-voltage circuit breaker intelligent controller based on CAN

Technical field

The utility model belongs to quality of power supply Real-time Monitor Technique field, particularly relates to the Real-Time Monitoring in power supply and distribution system and monitoring technique.

Background technology

Low-voltage circuit breaker is the device for switching equipment that in electric power system, Application comparison is extensive and important, and it mainly undertakes power transmission and distribution control, disengagement failure electric current, protects the responsibility of the safe operation of electrical network and power consumption equipment in power supply and distribution system.The functions such as the protection of circuit breaker and control are carried out the operation of splitting or integrating lock by its core cell one controller to circuit breaker and are realized.The controller of what traditional low-voltage circuit breaker adopted is electromagnetic type or electronic type, function is very single, can only control circuit breaker trip, and time limit curve is very simple.Because their power consumptions are high; responsiveness is slow; its reliability, sensitivity are all difficult to be protected, and are therefore necessary to greatly develop intelligent low-voltage circuit breaker, realize digitlization, selectively dropout protection and meet the requirement of different user and complicated power supply-distribution system.Replace electromagnetic type in the past and semiconductor-type protective device by digitlization monitoring and protection mode, there is very real meaning.Along with the fast development of sensor technology and the communication technology, for realizing automation, the intellectuality of electric energy quality monitoring, provide new approaches.

Summary of the invention

Goal of the invention: for above-mentioned Problems existing and defect; a kind of low-voltage circuit breaker intelligent controller based on CAN of the utility model exploitation; Based Intelligent Control advantage is utilized to realize circuit breaker defencive function in low-voltage distribution system; protection electrical power distribution network and industrial equipment, from the destruction of short circuit, overload, under voltage and earth fault current, realize the low-power consumption of power distribution automation, low cost, networking, intellectuality.

Technical scheme: to achieve the above object of the invention, the utility model is by the following technical solutions: a kind of low-voltage circuit breaker intelligent controller based on CAN comprises master control processing module, electric energy metering module, CAN, data acquisition module, wherein: described data acquisition module, current signal is gathered, by collection terminal port transmission to ADE7758 by current transformer; Described electric energy metering module, realizes various parameter measurement, by the transmission of SPI Interface realization measuring parameter to main control module; Described main control module, processes reception data, be pre-stored in various error protection in FLASH current value and operate time threshold values carry out contrast and judge, export various control command and alarm signal, if determine circuit malfunctions, then send trip signal, come by executive circuit; Described CAN, will gather parameter information data through CAN and be sent to ipc monitor center, and Surveillance center carries out storing and analyzing according to Monitoring Data, thus improve intelligent controller stability and reliability.

Described main control chip adopts STM32F107VCT6; Described electric energy metering module adopts chip ADE7758; Described CAN adopts chip TJA1040; Described data acquisition module adopts chip ZMCT102.

Beneficial effect: a kind of low-voltage circuit breaker intelligent controller based on CAN is a kind of intelligent controlling device having merged the field state-of-the-art technologies such as sensor technology, electronic technology, instrument and meter, spi bus, the CAN communication technology; the utility model adopts CAN communication mode; circuit breaker is realized and central control computer two-way communication; form intelligentized monitoring, protection, information network system, make circuit breaker develop into the defencive function of intellectuality, networking from basic defencive function.Controller has a significant effect for lifting automatic management level, saving manpower and dropout early warning, has higher engineer applied and is worth and market popularization value, have very wide application prospect.

Accompanying drawing explanation

Fig. 1 is the utility model theory diagram.

Fig. 2 is the utility model master control processing module schematic diagram.

Fig. 3 is the utility model CAN schematic diagram.

Fig. 4 is the utility model electric energy metering module schematic diagram.

Fig. 5 is the utility model data acquisition module schematic diagram.

Wherein master control processing module 1, electric energy metering module 2, CAN 3, data acquisition module 4.

Embodiment

Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.

A kind of low-voltage circuit breaker intelligent controller based on CAN of the utility model, relate to a kind of by current transformer collection current parameters information, convert curtage signal to, data processing is realized through electric energy metering module, carry out parameter measurement, main control module is sent data to by spi bus communication, com-parison and analysis is carried out to image data parameter, according to result sending controling instruction and output alarm signal, and by communicating with host computer with CAN, there is good human-computer interaction function.

The utility model theory diagram is represented with reference to Fig. 1, Fig. 1.Data collecting module collected is to current signal, be sent to electric energy metering module, measure parameter, transfer to main control module by SPI interface, main control module carries out data processing, make various control command and alarm signal, obtain communication through CAN and host computer, parameter and content of operation are sent to Surveillance center, Surveillance center obtains the laggard row of data and stores, and be further processed, and by CAN to main control module transfer instruction.

The utility model master control processing module schematic diagram is represented with reference to Fig. 2, Fig. 2.Acp chip is ARM7 chip STM32F107VCT6, the resources such as it includes CAN, I2C, SPI, USART interface, and CPU obtains the continuous data from electric energy metering module by spi bus, and CAN communication realizes the wire transmission of data.The exterior storage of master control processing module comprises the AT24C16 memory cell of iic bus.

The utility model terminal CAN schematic diagram is represented with reference to Fig. 3, Fig. 3.Acp chip is TJA1040, and it meets ISO 11898 standard completely, and speed, up to 1Mbaud, at least can connect 110 nodes, and differential receiver has wider common mode range can electromagnetism interference EMI.CAN realizes main control module and host computer two-way communication, realizes parameter transmission and instruction issuing.

The utility model terminal electric energy metering module schematic diagram is represented with reference to Fig. 4, Fig. 4.Acp chip is ADE7758, and it is the three-phase electrical energy computation chip of a high accuracy, with two-way pulse output function and a serial line interface.ADE7758 is integrated with second order es-D analog to digital converter, digital integrator, reference circuit, temperature sensor, and allly gains merit, the Signal Processing Element that idle and apparent electric energy metrical and the effective value First Astronautic Research Institute for Measurement and Test need.There is provided system calibration function mutually for each, include valid value offset calibration, phase alignment, the calibration of power, APCF logic exports and provides meritorious power information, and VARCF logic exports and provides instantaneous reactive rate or apparent power information.This module provides a SPI interface, carries out the transmission of measuring parameter between convenience and main control module.

The utility model terminal data acquisition module schematic diagram is represented with reference to Fig. 5, Fig. 5.Acp chip is current transformer ZMCT102, and current transformer is according to electromagnetic induction principle, and primary current larger for numerical value is converted to the less secondary current of numerical value by certain no-load voltage ratio, is used for carrying out protecting, the purposes such as measurement.The current parameters signal collected is sent to electric energy metering module acquisition interface by data acquisition module, carries out each parameter measurement by electric energy metering module.

Claims

1. based on a low-voltage circuit breaker intelligent controller for CAN, it is characterized in that: comprise master control processing module, electric energy metering module, CAN, data acquisition module, wherein:

Described data acquisition module, adopts chip ZMCT102 to realize current signal collection;

Described electric energy metering module, obtains data acquisition module collection signal by electric energy computation chip ADC interface, and line parameter of going forward side by side is measured;

Described CAN, is connected with main control chip by CAN communication mode;

Described master control processing module, obtains the measuring parameter after electric energy metering module process by spi bus, and realizes remote wire transmission by CAN and control centre, send data to Surveillance center, realize the Based Intelligent Control of low-voltage circuit breaker.

2. a kind of low-voltage circuit breaker intelligent controller based on CAN according to claim 1, is characterized in that: described main control chip adopts STM32F107VCT6; Described electric energy metering module adopts chip ADE7758; Described CAN adopts chip TJA1040; Described data acquisition module adopts chip ZMCT102.