CN2326963Y - Electric-power load monitor - Google Patents
Electric-power load monitor Download PDFInfo
- Publication number
- CN2326963Y CN2326963Y CN 98225926 CN98225926U CN2326963Y CN 2326963 Y CN2326963 Y CN 2326963Y CN 98225926 CN98225926 CN 98225926 CN 98225926 U CN98225926 U CN 98225926U CN 2326963 Y CN2326963 Y CN 2326963Y
- Authority
- CN
- China
- Prior art keywords
- housing
- load monitor
- control assembly
- electric load
- chip microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a device for monitoring power load of a power system. The utility model which is composed of a panel, a control unit, a casing, etc. is characterized in that an inner cavity of the casing is fixedly provided with the control unit which adopts a PIC16C74 single-chip microcomputer to detect and control. The control unit is provided with an RS 232 interface which can implement both-way communication with an external computer to automatically store the variation values of the current and the voltage of each phase and to implement data communication with the computer. The utility model can provide scientific data to electric power management departments for decision.
Description
The utility model relates to a kind of device of electric system to the electric load monitoring.
Relevant by retrieval patent documentation does not retrieve the electric load monitoring device identical with the utility model structure at present as yet.Existing substation transformer secondary is surveyed the load monitoring device, because its function and structural reason, it is few that ubiquity function singleness, poor reliability, memory contents, can only store the time of A, B, C three-phase current maximal value and generation thereof, and situation about changing for transformer load is difficult to obtain definite data.Thereby can not manage the balance and the overload self-shield of threephase load effectively, make the transformer long-term work under overload and non-equilibrium state, cause transformer often to burn.
The purpose of this utility model is that a kind of employing computing machine single-chip microcomputer will be provided is that system and RS232 interface combine, and reaches automatic detection, stores the electric load monitor of each circuitry phase load and overload self-shield.
Technical characterictic of the present utility model is: consider that memory space is big, reflect intuitively be designed on the basis by: the electric load monitor that panel, control assembly, power supply unit, housing are formed is characterized in that: the intracavity bottom at housing is provided with power supply unit; In the inner chamber of housing, be fixed with control assembly; On housing, be fixed with panel; Adopt the PIC16C74 single-chip microcomputer to detect control in the described control assembly; Select the real-time timepiece chip of DS1302 band RAM in the described control assembly for use; Be provided with the RS232 interface in the described control assembly and can carry out both-way communication with the external portable computing machine; Be respectively equipped with ellipse garden shape transom window on the described housing two sides, and on transom window mouth inwall, be provided with screen pack; During work, the substation transformer secondary side current is through electric current, voltage sensor conversion output 0～5V voltage, send the single-chip microcomputer of band A/D sampling to handle, thereby draw relevant information on load, link to each other with the external portable computing machine through the RS232 interface, so that each road transformer data aggregation is carried out unified management in computing machine, this load monitoring instrument can receive the instruction of the various modifications of outer computer on the other hand.
The utility model has the advantages that: owing to adopt the PIC16C74 system in the control assembly, thus can store each phase maximum current every day, minimum current, maximum voltage, minimum voltage and time of origin thereof automatically; Every day is each phase average electric current, average voltage and accumulative total power off time per hour, can make that the entire circuit design element is minimum, reliability is high; Because control assembly adopts RS-232 interface, carries out data communication thereby can link to each other with outer computer; Owing to be respectively equipped with ellipse garden shape transom window on the housing two sides, and on transom window mouth inwall, be provided with screen pack, thereby guaranteed the heat radiation requirement of parts, reduced dust and entered the fault of bringing to parts; Because multiple functional, memory space is big, data acquisition is convenient and reliable, thereby for administrative authority decision-making provides science data, so very big practical and popularizing value is arranged.
Below with reference to description of drawings embodiment of the present utility model.
Accompanying drawing 1 is the structural representation of the utility model electric load monitor.
Accompanying drawing 2 is electric load monitor system theory diagrams.
Accompanying drawing 4 is electrical schematic diagrams of computer main board control circuit in the electric load monitor control assembly.
With reference to accompanying drawing 1, be fixed with power supply unit [3] with screw at the intracavity bottom of housing [4]; In the inner chamber of housing [4], be fixed with control assembly [2] with screw; Upward be fixed with panel [1] at housing [4] with screw; On housing [4] two sides, be processed with ellipse garden shape transom window respectively, and on transom window mouth inwall, be fixed with screen pack.
With reference to accompanying drawing 2, [5] are that 13 input buttons link to each other with 13 I/O interfaces of single-chip microcomputer; [6] be three road current transducers; [7] be that three road voltage transmitters link to each other with 8 road A/D converter interface of single-chip microcomputer; [8] link to each other with 5 road I/O interfaces of single-chip microcomputer for the switch warning; [9] be the RS232 interface of single-chip microcomputer; [10] be pocket computer; [11] 8 figure place sign indicating numbers show and link to each other with the serial port of single-chip microcomputer; [12] 8KRAM for expanding; [13] be the clock expanded circuit.
With reference to accompanying drawing 3, the substation transformer secondary side current becomes 0～5 peace electric current through current transformer, and this current signal is delivered to the PI power pack, through power pack 0～5A electric current is become 0～5VDC voltage signal and delivers to Chip Microcomputer A
1, AD
2, AD
3Thereby, finish the collection of three-phase current.Three 220V voltages relatively become the 10V alternating voltage through the PV voltage transformer (VT) and deliver to Chip Microcomputer A behind rectifier filers
4, AD
5, AD
6, finish the collection of three-phase voltage.
With reference to accompanying drawing 4, the three-phase current of collection and voltage signal are delivered to the AD of PIC16C74 single-chip microcomputer
1～AD
6Interface becomes simulating signal into digital signal through the inner A/D converter of single-chip microcomputer; Through single-chip microcomputer data being delivered to the 24LC65 storer stores.U
3-DS1302 clock circuit, its performance are the real-time timepiece chip of low-power consumption band RAM and power down protection, can provide second, branch, the time, day, month signal; U
7-MAX232 chip is that RS-232 drives receiver, is used for both-way communication, the transmission data of single-chip microcomputer and computing machine or receives instruction.Single-chip microcomputer output overloading guard signal is to U
2-75452 driving circuits make relay U
9Work is by interface J2-7, the output of 8 pin.U
4The SV-DIP4 address switch is used for the selection of current range.U
5, U
6-24LC65 storer is used to store the data that need protection; U
8The little processing supervisory circuit of-MAX706, output resets under the situation that powers up power down and step-down.
With reference to accompanying drawing 5, deliver to U through the digital signal that single-chip microcomputer is handled
2-MAX7219 serial port 8 bit digital LEK display driver video datas; U
1Be the LED nixie display; U
8The-7406th, luminotron driving circuit, display working condition.
Claims (5)
1, a kind of electric load monitor, it is made up of panel [1], control assembly [2], power supply unit [3], housing [4], it is characterized in that: the intracavity bottom at housing [4] is provided with power supply unit [3]; In the inner chamber of housing [4], be fixed with control assembly [2]; On housing [4], be fixed with panel [1].
2, electric load monitor according to claim 1 is characterized in that: adopt the PIC16C74 single-chip microcomputer to detect control in the described control assembly [2].
3, electric load monitor according to claim 1 is characterized in that: the real-time timepiece chip of selecting DS1302 band RAM in the described control assembly [2] for use.
4, electric load monitor according to claim 1 is characterized in that: described control assembly is provided with the RS232 interface in [2], can carry out both-way communication with the external portable machine.
5, electric load monitor according to claim 1 is characterized in that: be respectively equipped with ellipse garden shape transom window on described housing [4] two sides, and be provided with screen pack on transom window mouth inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225926 CN2326963Y (en) | 1998-01-26 | 1998-01-26 | Electric-power load monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225926 CN2326963Y (en) | 1998-01-26 | 1998-01-26 | Electric-power load monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2326963Y true CN2326963Y (en) | 1999-06-30 |
Family
ID=33976522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98225926 Expired - Fee Related CN2326963Y (en) | 1998-01-26 | 1998-01-26 | Electric-power load monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2326963Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594041A (en) * | 2018-04-23 | 2018-09-28 | 中国计量大学 | A kind of detection platform for non-intrusion type household electric load monitoring device |
-
1998
- 1998-01-26 CN CN 98225926 patent/CN2326963Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594041A (en) * | 2018-04-23 | 2018-09-28 | 中国计量大学 | A kind of detection platform for non-intrusion type household electric load monitoring device |
| CN108594041B (en) * | 2018-04-23 | 2020-06-16 | 中国计量大学 | Detection platform for non-invasive household power load monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203394644U (en) | Diesel generator set controlling device | |
| CN202075599U (en) | Household solar energy monitoring system | |
| CN201518049U (en) | Distribution transformer monitoring metering terminal | |
| CN105955116B (en) | Photovoltaic air conditioner frequency converter electric energy controller and control system | |
| CN211627772U (en) | Small-size aluminium air battery monitored control system | |
| CN211375394U (en) | Be used for alternating-current charging stake to patrol and examine with portable detector major control system | |
| CN201607484U (en) | Household electricity consumption monitoring apparatus | |
| CN104578400A (en) | Intelligent protection device and method for power distribution circuit breaker | |
| CN110797973A (en) | Microcomputer controlled modularized direct current power supply panel | |
| CN201038820Y (en) | An integrated machine for reverse conversion control | |
| CN2326963Y (en) | Electric-power load monitor | |
| CN202502236U (en) | Lightning arrester on-line monitor calibration apparatus | |
| CN214667077U (en) | Explosion-proof low-power consumption data collection station | |
| CN213122110U (en) | Single-machine multi-user intelligent electric energy meter capable of data acquisition and communication | |
| CN210894499U (en) | Intelligent metering terminal with large-screen display function | |
| CN201117086Y (en) | Intelligent meter data concentrator | |
| CN210629116U (en) | Energy storage control system based on retired power battery pack | |
| CN102402204A (en) | Multipurpose data acquisition system | |
| CN201523255U (en) | Intelligent control device of generator | |
| CN201392474Y (en) | Integrated processing terminal of electrical bicycle | |
| CN209784440U (en) | Wireless electric energy display | |
| CN2716844Y (en) | Multifunctional electric larceny proof electric power monitor | |
| CN210224967U (en) | Low-voltage capacitor device | |
| CN214912969U (en) | Addressable conversion device of fire-fighting equipment | |
| CN203054151U (en) | Small current grounding fault line selection device based on DSP |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |