CN102331309A - On-line monitoring system for high voltage handcart switch cabinet - Google Patents
On-line monitoring system for high voltage handcart switch cabinet Download PDFInfo
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- CN102331309A CN102331309A CN201110223318A CN201110223318A CN102331309A CN 102331309 A CN102331309 A CN 102331309A CN 201110223318 A CN201110223318 A CN 201110223318A CN 201110223318 A CN201110223318 A CN 201110223318A CN 102331309 A CN102331309 A CN 102331309A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Abstract
The invention relates to an on-line monitoring system for a high voltage handcart switch cabinet. The on-line monitoring system comprises a temperature acquisition terminal, a display instrument terminal, and working power supplies, wherein the working power supplies are respectively corresponded to the temperature acquisition terminal and the display instrument terminal. The temperature acquisition terminal is mainly composed of temperature sensors, a one-ship microcomputer and a transmit-receive unit. The six temperature sensors are uniformly distributed and arranged at moving contacts or static contacts of a high voltage handcart switch cabinet and one environmental temperature sensor is arranged in a circuit breaker room of the high voltage handcart switch cabinet. Besides, the display instrument terminal is mainly composed of a reception unit, a display instrument terminal one-ship microcomputer and a display. High potential terminals of the sensors and a ground potential terminal of the display are connected in an isolated transmission mode. Therefore, the on-line monitoring system has characteristics of accurate measurement and interference resistance.
Description
Technical field
The present invention relates to the switch cubicle temperature monitoring system, particularly the automatic temperature monitoring device of high pressure wheelbarrow switch cabinet.
Background technology
High pressure wheelbarrow switch cabinet is a very important electrical equipment in the electric system.Along with the development of society, to the quality of power supply require increasingly highly, correspondingly the reliability of high-tension switch cabinet is also had higher requirement.And the over-heat inside phenomenon of switch cubicle has become the FAQs of switch cubicle in using, because the leakproofness of switch cabinet, in the heavier area of some loads, has the temperature rise of the switch cubicle problem that exceeds standard.The temperature rise of switch cubicle exceeds standard, and directly influences the safe and stable operation of equipment, and problems of excessive heat is a constantly process of development, if do not control, degree of superheat is aggravation constantly, and to the performance of insulating part and produce very big influence equipment life.Be necessary to develop wheelbarrow switch cabinet temperature online monitoring system for this reason, realize the on-line monitoring of wheelbarrow switch cabinet contact temperature.
Summary of the invention
The purpose of this invention is to provide a kind of thermometric accurately, adopt the temperature online monitoring system of the high pressure wheelbarrow switch cabinet of isolation transmission mode between sensor hot end and the display cold end.
The objective of the invention is to realize like this: a kind of high pressure wheelbarrow switch cabinet temperature online monitoring system, to form by temperature acquisition terminal and Displaying Meter end and the two corresponding work power supply, said temperature acquisition terminal is formed as follows:
Temperature sensor: form by six temperature sensors and an environment temperature sensor; Six temperature sensors are uniformly distributed with on the moving contact or static contact that is arranged on high pressure wheelbarrow switch cabinet, and an environment temperature sensor is arranged in the breaker chamber of high pressure wheelbarrow switch cabinet;
Single-chip microcomputer: the signal output part of above-mentioned seven temperature sensors is connected with single-chip microcomputer;
Transmit-Receive Unit: the signal output part of single-chip microcomputer is connected with the signal input part of Transmit-Receive Unit;
Said Displaying Meter end is formed as follows:
Receiving element: with the Transmit-Receive Unit wireless connections of said temperature acquisition terminal;
Displaying Meter end single-chip microcomputer: its input end is connected with the output terminal of receiving element;
Display: be connected with Displaying Meter end single-chip microcomputer.
The said temperature sensor is the digital temperature sensor of American Dallas Semiconductor company; Said Transmit-Receive Unit and receiving element all adopt the radio transmitting and receiving chip of Freescale company to form; Said display adopts LCD.
The working power of said temperature acquisition terminal is: as the current transformer of introducing alternating current output 3.3V direct current behind cascade rectifier and the voltage stabilizer in order.
The present invention has following characteristics and advantage:
1) temperature survey is accurate
Adopt the high-precision digital temperature sensor of import.Temperature sensor both can also can be installed on static contact in installation on the moving contact.Convenient like this and present stage variation isolating switch kind matches, thereby has guaranteed the work that isolating switch is more stable.Temperature probe is apart from very near of point for measuring temperature, induction contact temperature variation rapidly and accurately, and it is accurate to measure temperature.
2) insulation isolation
The temperature sensor acquired signal transfers to display through wireless mode.Sensor and monitoring display instrument solve the isolation transmission between sensor hot end and the instrument cold end through the wireless data transmission mode.
3) need not powered battery.
The data processing of Sensor section and radiating circuit adopt coil-induced power supply; The problem of having avoided the easy dead electricity of battery and can't long-term work.
4) adopt international advanced Radio Transmission Technology.Solved the problem that interferes with each other of wireless signal.
Description of drawings
Fig. 1, Fig. 2 are respectively the scheme of installation of temperature acquisition terminal on moving contact and static contact.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is a temperature acquisition terminal hardware structured flowchart.
Fig. 5 is the hardware block diagram of Displaying Meter end (being monitor terminal).
Embodiment
Fig. 4, Fig. 5 illustrate, and this high pressure wheelbarrow switch cabinet temperature online monitoring system is made up of temperature acquisition terminal and Displaying Meter end and the two corresponding work power supply, and said temperature acquisition terminal is formed as follows:
Temperature sensor: form by six temperature sensors and an environment temperature sensor; Six temperature sensors are uniformly distributed with on the moving contact or static contact that is arranged on high pressure wheelbarrow switch cabinet, and an environment temperature sensor is arranged in the breaker chamber of high pressure wheelbarrow switch cabinet;
Single-chip microcomputer: the signal output part of above-mentioned seven temperature sensors is connected with single-chip microcomputer;
Transmit-Receive Unit: the signal output part of single-chip microcomputer is connected with the signal input part of Transmit-Receive Unit;
Said Displaying Meter end is formed as follows:
Receiving element: with the Transmit-Receive Unit wireless connections of said temperature acquisition terminal;
Displaying Meter end single-chip microcomputer: its input end is connected with the output terminal of receiving element;
Display: be connected with Displaying Meter end single-chip microcomputer.
Fig. 1 illustrates, and is fixed with plum blossom grappling fixture 5 on the moving contact 1, and insulating sleeve 2 is enclosed within on the moving contact, and current mutual inductor coil 6 is on moving contact, and single-chip microcomputer and Transmit-Receive Unit 3 are installed on the moving contact, and (6) temperature sensor 4 is fixed on the moving contact.
Fig. 2, Fig. 3 illustrate, and static contact 7 is positioned at static contact box 8, and temperature acquisition terminal 9 is arranged on the static contact.For avoiding bringing influence to high voltage equipment insulation, adopt Radio Transmission Technology as data transmission medium, the CT inductive power supply is adopted in the power supply at temperature acquisition terminal.The working power at temperature acquisition terminal is: as the current transformer of introducing alternating current output 3.3V direct current behind cascade rectifier and the voltage stabilizer in order.For making temperature survey more accurate, temperature sensor adopts the high-accuracy digital temperature sensor of import.Total system hardware is made up of temperature acquisition terminal, reception Displaying Meter etc.
Every wheelbarrow switch cabinet disposes 6 sleeving temperature acquisition terminals, to 6 contact temperature measurements of switch cubicle; Every switch cubicle is installed a cover and is received Displaying Meter.The temperature acquisition terminal sends the temperature data that collects to the Displaying Meter end through wireless mode, and the Displaying Meter termination is received data after treatment, shows in this locality and reaches background manage software through the RS-485 bus; Background manage software is with the mode query facility temperature of poll; Background manage software supports that web monitors in real time; And received temperature data analyzed, the temperature that surpasses alarming line is produced sound and SMS alarm (SMS alarm needs the MODEM hardware supports).
Embodiment: temperature sensor is the digital temperature sensor of American Dallas Semiconductor company; Transmit-Receive Unit and receiving element all adopt the radio transmitting and receiving chip of Freescale company to form; Display adopts LCD.
Claims (3)
1. high pressure wheelbarrow switch cabinet temperature online monitoring system is made up of temperature acquisition terminal and Displaying Meter end and the two corresponding work power supply, it is characterized in that said temperature acquisition terminal is formed as follows:
Temperature sensor: form by six temperature sensors and an environment temperature sensor; Six temperature sensors are uniformly distributed with on the moving contact or static contact that is arranged on high pressure wheelbarrow switch cabinet, and an environment temperature sensor is arranged in the breaker chamber of high pressure wheelbarrow switch cabinet;
Single-chip microcomputer: the signal output part of above-mentioned seven temperature sensors is connected with single-chip microcomputer;
Transmit-Receive Unit: the signal output part of single-chip microcomputer is connected with the signal input part of Transmit-Receive Unit;
Said Displaying Meter end is formed as follows:
Receiving element: with the Transmit-Receive Unit wireless connections of said temperature acquisition terminal;
Displaying Meter end single-chip microcomputer: its input end is connected with the output terminal of receiving element;
Display: be connected with Displaying Meter end single-chip microcomputer.
2. high pressure wheelbarrow switch cabinet temperature online monitoring system according to claim 1 is characterized in that said temperature sensor is the digital temperature sensor of American Dallas Semiconductor company; Said Transmit-Receive Unit and receiving element all adopt the radio transmitting and receiving chip of Freescale company to form; Said display adopts LCD.
3. high pressure wheelbarrow switch cabinet temperature online monitoring system according to claim 2 is characterized in that the working power at said temperature acquisition terminal is: as the current transformer of introducing alternating current output 3.3V direct current behind cascade rectifier and the voltage stabilizer in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223318A CN102331309A (en) | 2011-08-05 | 2011-08-05 | On-line monitoring system for high voltage handcart switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223318A CN102331309A (en) | 2011-08-05 | 2011-08-05 | On-line monitoring system for high voltage handcart switch cabinet |
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| Publication Number | Publication Date |
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| CN102331309A true CN102331309A (en) | 2012-01-25 |
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| CN201110223318A Pending CN102331309A (en) | 2011-08-05 | 2011-08-05 | On-line monitoring system for high voltage handcart switch cabinet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768075A (en) * | 2012-07-10 | 2012-11-07 | 鞍山市融庭科技开发有限公司 | Temperature early-warning centralized display system |
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN108287288A (en) * | 2018-02-06 | 2018-07-17 | 李宏仁 | A kind of switchgear thermal defect monitoring system and analysis method and comprehensive control device |
| CN110380380A (en) * | 2019-07-24 | 2019-10-25 | 河北宝凯电气股份有限公司 | A kind of intelligent load protection system of breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0815053A (en) * | 1994-06-29 | 1996-01-19 | Nissin Electric Co Ltd | Overheat detector for low voltage conductor |
| CN201212840Y (en) * | 2008-04-18 | 2009-03-25 | 杭州凯源电子有限公司 | On-line monitoring system for switch cabinet contact temperature boost |
| CN201532262U (en) * | 2009-11-09 | 2010-07-21 | 厦门立林高压电气有限公司 | High-voltage switch contact and bus on-line temperature measuring device |
| CN202188919U (en) * | 2011-08-05 | 2012-04-11 | 四川省电力公司自贡电业局 | High-voltage handcart switch cabinet temperature on-line monitoring system |
-
2011
- 2011-08-05 CN CN201110223318A patent/CN102331309A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0815053A (en) * | 1994-06-29 | 1996-01-19 | Nissin Electric Co Ltd | Overheat detector for low voltage conductor |
| CN201212840Y (en) * | 2008-04-18 | 2009-03-25 | 杭州凯源电子有限公司 | On-line monitoring system for switch cabinet contact temperature boost |
| CN201532262U (en) * | 2009-11-09 | 2010-07-21 | 厦门立林高压电气有限公司 | High-voltage switch contact and bus on-line temperature measuring device |
| CN202188919U (en) * | 2011-08-05 | 2012-04-11 | 四川省电力公司自贡电业局 | High-voltage handcart switch cabinet temperature on-line monitoring system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768075A (en) * | 2012-07-10 | 2012-11-07 | 鞍山市融庭科技开发有限公司 | Temperature early-warning centralized display system |
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN108287288A (en) * | 2018-02-06 | 2018-07-17 | 李宏仁 | A kind of switchgear thermal defect monitoring system and analysis method and comprehensive control device |
| CN108287288B (en) * | 2018-02-06 | 2020-09-22 | 李宏仁 | Switch cabinet thermal defect monitoring system, analysis method and comprehensive measurement and control device |
| CN110380380A (en) * | 2019-07-24 | 2019-10-25 | 河北宝凯电气股份有限公司 | A kind of intelligent load protection system of breaker |
| CN110380380B (en) * | 2019-07-24 | 2024-07-05 | 河北宝凯电气股份有限公司 | Intelligent load protection system of circuit breaker |
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Application publication date: 20120125 |