CN203149066U - Distributed on-line insulation monitoring device for electrical network operation equipment - Google Patents
Distributed on-line insulation monitoring device for electrical network operation equipment Download PDFInfo
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- CN203149066U CN203149066U CN 201320198733 CN201320198733U CN203149066U CN 203149066 U CN203149066 U CN 203149066U CN 201320198733 CN201320198733 CN 201320198733 CN 201320198733 U CN201320198733 U CN 201320198733U CN 203149066 U CN203149066 U CN 203149066U
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Abstract
The utility model discloses a distributed on-line insulation monitoring device for electrical network operation equipment, which comprises the following components: a master control unit, a communication bus, a signal acquisition unit, micro-current sensors, an audio and video alarm, a display device and a keyboard. The master control unit comprises a microcontroller and a bus communication card. The signal acquisition unit comprises a plurality of data acquisition devices. Each data acquisition device is connected with a micro-current sensor. The signal acquisition unit is connected with the master control unit through a communication bus. The audio and video alarm, the display device and the keyboard are respectively connected with the microcontroller. The distributed on-line insulation monitoring device for the electrical network operation equipment has the following advantages: capability of performing insulation monitoring on a plurality of electrical parts simultaneously, no effect by the number of monitored electric parts, simple system structure, low cost, reliable performance, capability of operating in various of complicated states, higher interference resistance, etc.
Description
Technical field
The utility model relates to the apparatus insulated on-Line Monitor Device of a kind of collecting and distributing type operation of power networks, and is especially a kind of for monitoring the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks whether line insulation equipment leaks electricity.
Background technology
In the network system, usually comprise power equipment/elements such as vacuum contactor, cable, voltage transformer (VT), current transformer, insulated terminal, these equipment have certain insulation characterisitic.After equipment was through long-term the use, the phenomenon that insulation characterisitic reduces usually can take place.In case the insulating property of these equipment reduce, and leakage of current just takes place, and produce more circuit loss, also can make apparatus insulated destruction simultaneously, equipment in service punctures under operating voltage or superpotential, causes to have a power failure or damage of facilities
The apparatus insulated on-Line Monitor Device major part of existing operation of power networks is single device, can only carry out the insulating monitoring of one to two kind of force device.Jian Ce equipment/element is too much if desired, then needs to install many monitoring equipments, makes that the structure of monitoring system is too complicated, and whole cost is too high.
The utility model content
The utility model is the weak point that exists in the above-mentioned prior art for avoiding, and provides a kind of collecting and distributing type operation of power networks apparatus insulated on-Line Monitor Device, with monitoring system structure, the reduction system cost of simplifying insulator arrangement.
The utility model be the technical solution problem by the following technical solutions.
The apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks, its design feature are to comprise main control unit, communication bus, signal gathering unit, low current sensor, audible-visual annunciator, display and keyboard; Described main control unit comprises microcontroller and bus communication interface card; Described signal gathering unit comprises a plurality of data acquisition units, and each data acquisition unit connects a low current sensor; Be connected by communication bus between described data acquisition unit and the described main control unit; Described audible-visual annunciator, display and keyboard all are connected with described microcontroller.
The design feature of the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks of the present utility model also is:
Described display is LCD display.
Described low current sensor is Luo-coil type current sensor.
Described communication bus is the CAN bus, and described bus communication interface card is CAN bus communication interface card DAM-C3110 USB-CAN.
Compared with the prior art, the utility model beneficial effect is embodied in:
The apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks of the present utility model, by utilizing CAN bus group network technology that each force device in the operation of power networks equipment is carried out insulating monitoring, arrangement convenience, can carry out insulating monitoring to a plurality of electric power original papers simultaneously, system architecture is simple, not only be not subjected to the influence of the force device quantity of need monitoring, and the sensitivity of monitoring has also obtained effective assurance.Low, the dependable performance of system cost can be moved under various complicated occasions, has higher antijamming capability.For the quality of diagnosing cable early defect and accident potential, the sudden insulation fault of control, monitoring insulation of electrical installation performance provides effective information, can guarantee the safe and reliable operation of equipment.
Description of drawings
Fig. 1 is the structured flowchart of the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks of the present utility model.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1, the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks comprises main control unit, communication bus, signal gathering unit, low current sensor, audible-visual annunciator, display and keyboard; Described main control unit comprises microcontroller and bus communication interface card; Described signal gathering unit comprises a plurality of data acquisition units, and each data acquisition unit connects a low current sensor; Be connected by communication bus between described data acquisition unit and the described main control unit; Described audible-visual annunciator, display and keyboard all are connected with described microcontroller.
Described display is LCD display.LCD display has that volume is little, power saving, do not produce that high temperature, low radiation, benefit are healthy, the soft advantage such as eye of not hindering of picture.
Described low current sensor is Luo-coil type current sensor.Luo Shi (Rogowski, Rogovski) the coil form current sensor has advantages such as the linearity is good, measuring accuracy is high, measurement range is wide, it is measured between loop and the equipment under test does not have direct electrical link, measurement safe reliability height, can suppress noise well, can realize the on-line monitoring of little electric current, so select Luo-coil type current sensor to measure the Leakage Current of insulator arrangement.
Described communication bus is the CAN bus, and described bus communication interface card is CAN bus communication interface card DAM-C3110 USB-CAN.
DAM-C3110 USB-CAN card is a kind of high-performance CAN bus communication interface card of USB interface, has the compatible USB1.1 of 1 tunnel independence CAN interface and 1 road USB2.0() intelligent CAN bus interface adapter, can carry out two-way transmission.This card meets the CAN2.0A/B standard, support any baud rate between 5Kbps～1Mbps, the maximum transmitted flow was 2500 frame/seconds, support transmitted in both directions, volume is little, supports hot plug, and the CAN bus circuit adopts electric isolation fully, strong interference immunity meets technical grade temperature range (25 ℃～+ 85 ℃).
The apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks of the present utility model adopts CAN bus group network technology, comprises the main control unit and the signal gathering unit that connect by the CAN bus.Main control unit shows the data message of gathering by the control command of keyboard input service personnel input by LCD display.
Described signal gathering unit is made of the data acquisition unit that several are used for each electric power original paper leakage of current signal of monitoring, described main control unit comprises microcontroller, and described microcontroller is handled the leakage of current signal that RS485 receives the signal gathering unit transmission.The leakage of current signal of each force device that data acquisition unit will collect from sensor is handled, and converting the Leakage Current signal to digital signal by the A/D conversion, sends to the microcontroller of main control unit by the CAN bus.The utility model carries out insulating monitoring by utilizing CAN bus group network technology to each force device in the operation of power networks equipment, arrangement convenience, can carry out insulating monitoring to a plurality of electric power original papers simultaneously, not only be not subjected to the influence of the electric power original paper quantity of need monitoring, and the sensitivity of monitoring has also obtained effective assurance.Low, the dependable performance of system cost can be moved under various complicated occasions, has higher antijamming capability.
A plurality of low current sensors are respectively applied to monitor the Leakage Current signal of force devices such as vacuum contactor, cable, voltage transformer (VT), current transformer, insulated terminal.Data acquisition unit is handled the signal of low current sensor collection, and the signal after will handling then improves the CAN bus transfer and gives microcontroller.Microcontroller judges whether the needs warning according to collection leakage current values and default alarming value, and the staff can pass through keyboard input information, shows output information by the LCD display screen, makes it easy to operating personnel's operation control; After the leakage of current signal of each force device that signal gathering unit will collect from sensor is handled, convert the leakage of current signal to digital signal by the A/D conversion, send to main control unit by the CAN bus again.
Claims (4)
1. the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks is characterized in that, comprises main control unit, communication bus, signal gathering unit, low current sensor, audible-visual annunciator, display and keyboard; Described main control unit comprises microcontroller and bus communication interface card; Described signal gathering unit comprises a plurality of data acquisition units, and each data acquisition unit connects a low current sensor; Be connected by communication bus between described data acquisition unit and the described main control unit; Described audible-visual annunciator, display and keyboard all are connected with described microcontroller.
2. the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks according to claim 1 is characterized in that, described display is LCD display.
3. the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks according to claim 1 is characterized in that, described low current sensor is Luo-coil type current sensor.
4. according to claim 1, the apparatus insulated on-Line Monitor Device of 2 or 3 described collecting and distributing type operations of power networks, it is characterized in that described communication bus is the CAN bus, described bus communication interface card is CAN bus communication interface card DAM-C3110 USB-CAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198733 CN203149066U (en) | 2013-04-18 | 2013-04-18 | Distributed on-line insulation monitoring device for electrical network operation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198733 CN203149066U (en) | 2013-04-18 | 2013-04-18 | Distributed on-line insulation monitoring device for electrical network operation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN203149066U true CN203149066U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320198733 Expired - Fee Related CN203149066U (en) | 2013-04-18 | 2013-04-18 | Distributed on-line insulation monitoring device for electrical network operation equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441470A (en) * | 2013-08-23 | 2013-12-11 | 桂林电子科技大学 | Electric leakage protection system based on DSP |
| CN104793173A (en) * | 2015-05-06 | 2015-07-22 | 郑州瑞能电气有限公司 | Electric power measurement monitoring device adopting digital bus multipoint distribution acquisition technology |
| CN105988044A (en) * | 2015-02-04 | 2016-10-05 | 国网河南省电力公司郑州供电公司 | Anti-interference type power equipment insulation online monitoring system |
| CN108627738A (en) * | 2017-03-16 | 2018-10-09 | 宝钢特钢有限公司 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
-
2013
- 2013-04-18 CN CN 201320198733 patent/CN203149066U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441470A (en) * | 2013-08-23 | 2013-12-11 | 桂林电子科技大学 | Electric leakage protection system based on DSP |
| CN103441470B (en) * | 2013-08-23 | 2015-03-25 | 桂林电子科技大学 | Electric leakage protection system based on DSP |
| CN105988044A (en) * | 2015-02-04 | 2016-10-05 | 国网河南省电力公司郑州供电公司 | Anti-interference type power equipment insulation online monitoring system |
| CN104793173A (en) * | 2015-05-06 | 2015-07-22 | 郑州瑞能电气有限公司 | Electric power measurement monitoring device adopting digital bus multipoint distribution acquisition technology |
| CN108627738A (en) * | 2017-03-16 | 2018-10-09 | 宝钢特钢有限公司 | A kind of on-Line Monitor Device and monitoring method for monitoring electroslag furnace water-cooled cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160418 |