CN2876930Y - Temp. tester for high voltage switch cabinet - Google Patents
Temp. tester for high voltage switch cabinet Download PDFInfo
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- CN2876930Y CN2876930Y CN 200420150813 CN200420150813U CN2876930Y CN 2876930 Y CN2876930 Y CN 2876930Y CN 200420150813 CN200420150813 CN 200420150813 CN 200420150813 U CN200420150813 U CN 200420150813U CN 2876930 Y CN2876930 Y CN 2876930Y
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Abstract
The utility model provides a temp. tester for high voltage switch cabinet, which comprises a plurality of high-pressure contact temperature detectors, a display connecting mainframe and mainframe, an alarm. The utility model is characterized in that all the high voltage switchboard thermometers have the same structure, which are composed of a temperature sensor, a microprocessor, a power module and an optical signal module modulation, wherein the power module is connected with the temperature sensor, the microprocessor and the optical signal modulation module respectively, providing work power. The input terminal of the microprocessor is connected with the output terminal of the temperature sensor; the output terminal of the microprocessor is connected with the optical signal modulation; the output terminal of the optical signal modulation with correspondence with an optical fiber is connected with optical signal demodulating modules; the output terminal of the optical signal demodulating module is connected with the I / O interface of the mainframe. The equipment continuously monitors the operating temperature of the contact inside the high voltage switchboard by the temperature sensor; temperature signals are transmitted by an optical fiber. Once the contact temperature is overheating, the apparatus will issue alarming instruction. It is realized that the contact temperature inside the high voltage switchboard is always monitored on-line and the work performance is excellent.
Description
Affiliated technical field
The utility model provides a kind of high-tension switch cabinet temperature measurer, belongs to power equipment temperature online surveying instrument technical field.
Background technology
High-tension switch cabinet is the important electric equipment of generating plant, transformer station.High-tension switch cabinet because positions such as contact in the switch cubicle or bus row junction cause the contact resistance change to be generated heat greatly because of aging, causes contact or bus row junction temperature to raise in the long-time running process.Contact or bus row junction temperature raise, and can make its contact resistance further become big, further become big thereby produce more heat, contact resistance, form vicious cycle, finally cause fire failure, cause fault.In recent years, a lot of switch cubicle overheat accidents have taken place in power plant, transformer station, cause major accidents such as fire and large-area power failure, predict in advance switch cubicle running status, confirm the switch cubicle temperature rise in allowed limits, be to stop the key that this type of accident takes place.
But the contact running temperature in the high-tension switch cabinet is difficult to detect, and this mainly is that high pressure, space are narrow and small mostly to be sealing again because have in the cabinet, and common thermometry can not be used.As common temperature monitoring method, mainly adopt thermopair, thermal resistance, semiconductor temperature sensor equitemperature sensing element to realize.These temperature sensors all need the plain conductor transmission signals, owing to can't guarantee insulating property, thus the contact temperature that can't be applied in the high-tension switch cabinet is monitored; Infrared measurement of temperature position non-contact temperature measuring for another example is subject to the interference of environment and peripheral electromagnetic field, needs manually-operated, realizes the with high costs of on-line monitoring, and is difficult to realize.And high voltage has and has high voltage or strong electromagnetic in fatal danger, the high-tension switch cabinet, so all the time, the on-line monitoring of high-tension switch cabinet inner contact temperature can't be realized always.
The utility model content
The purpose of this utility model provides a kind of on-line monitoring that can overcome above-mentioned defective, realize high-tension switch cabinet inner contact temperature, the high-tension switch cabinet temperature measurer of excellent working performance.Its technology contents is:
Comprise a plurality of high-voltage contact heat detectors, main frame and the display that is connected with main frame, alarm, it is characterized in that: the structure of each high-voltage contact heat detector is identical, include temperature sensor, microprocessor, power module and light signal modulation module, wherein power module is distinguished the jointing temp sensor, microprocessor and light signal modulation module, for it provides working power, the output terminal of the input end jointing temp sensor of microprocessor, its output termination light signal modulation module, the output terminal correspondence of light signal modulation module connects the light signal demodulation module through optical fiber, and the output terminal correspondence of light signal demodulation module connects the I/O mouth of main frame.
Described high-tension switch cabinet temperature measurer is characterized in that: power module adopts the 3.6V battery; Perhaps power module comprises current transformer L, resistance R 1, resistance R 5, rectifier bridge T, capacitor C and voltage stabilizer Z, wherein current transformer L is directly from high-tension cable X power taking, its output terminal and resistance R 1 and connect after connect the input end of rectifier bridge T, rectifier bridge T is attempted by the output terminal of output terminal as the 3.6V power supply, and capacitor C and voltage stabilizer Z are attempted by between the output terminal of rectifier bridge T.
Described high-tension switch cabinet temperature measurer, temperature sensor adopts the DS18B20 chip, microprocessor adopts the PIC12C508/509 chip, wherein 1 pin of microprocessor connects the 3.6V power supply, 2 pin, 3 pin connect crystal oscillating circuit, and 4 pin connect reset circuit, the signal I/O end of 5 pin jointing temp sensors, the power end of 6 pin jointing temp sensors, 7 pin connect the input end of light signal modulation module through resistance R 3.
Described high-tension switch cabinet temperature measurer, the light signal modulation module adopts the HFBR-1414 chip, the light signal demodulation module adopts the HFBR-2412 chip, optical fiber interface 9 pin of light signal modulation module connect optical fiber interface 9 pin of light signal demodulation module through optical fiber GX, and the output terminal 6 pin correspondences of light signal demodulation module connect the I/O mouth of main frame.
Described high-tension switch cabinet temperature measurer, main frame adopts the 89C52 chip, and its I/O mouth P1 mouth correspondence connects the output terminal of light signal demodulation module, its I/O mouth 16 pin circuit taking alarm, its PO mouth connects display and control knob, and its P2 mouth connects storer, and its RXD mouth, TXD mouth are connected communication interface.
Its principle of work is: the high-voltage contact heat detector adopts little power consumption technology, be installed on the hot-line connector of high-tension switch cabinet, provide power supply with battery or special power supply (utilizing special current transformer) directly from high pressure busbar or cable splice power taking, gather the temperature signal of high-tension switch cabinet interior contacts, and a temperature value that collects converts light signal to, optical fiber has the good insulation performance performance, in high-tension switch cabinet, bend to difformity according to its inner structure, it is under the situation that does not influence existing equipment work, light signal is spread out of, light signal is separated dim signal in the low-pressure side of this instrument and is restored temperature value, thereby realize the on-line measurement of high-tension switch cabinet inner contact temperature, and on display, show, also temperature value can be passed to host computer by communication interface, realize the concentrated monitoring of high-tension switch cabinet inner contact temperature.In case instrument can also send warning by warning circuit when temperature surpassed preset value.
The utility model compared with prior art, a plurality of high-voltage contact heat detectors can be directly installed on the contact position in the high-tension switch cabinet, the running temperature of continuous monitoring high-voltage electrical equipment interior contacts is spread out of temperature signal by optical fiber.Because optical fiber has the good insulation performance performance, and is not subjected to the interference of environment and peripheral electromagnetic field, so this instrument has high reliability and security, excellent working performance, cheap.This instrument can realize that also high-tension switch cabinet contact, hv cable termination head, high voltage bus etc. need the temperature online of isolated high voltage to detect.
Description of drawings
Fig. 1 is a principle of work block diagram of the present utility model;
Fig. 2 is the partial circuit figure that the utility model adopts 6 passage high-voltage contact heat detector embodiment.
Embodiment
Adopt 6 passage high-voltage contact heat detectors, each high-voltage contact heat detector includes the temperature sensor A1 that adopts the DS18B20 chip, adopt the microprocessor U1 of PIC12C508/509 chip, adopt the light signal modulation module A2 and the power module of HFBR-1414 chip, wherein power module comprises current transformer L, resistance R 1, resistance R 5, rectifier bridge T, capacitor C 1 and voltage stabilizer Z, wherein current transformer L is directly from high-tension cable X power taking, its output terminal and resistance R 1 and connect after connect the input end of rectifier bridge T, the output terminal of rectifier bridge T is as the output terminal of 3.6V power supply, and capacitor C 1 and voltage stabilizer Z are attempted by between the output terminal and ground of rectifier bridge T.The 3.6V power supply of power module output is jointing temp sensors A 1, microprocessor U1 and light signal modulation module A2 respectively, for it provides working power.1 pin of microprocessor U1 connects the 3.6V power supply, 2 pin, 3 pin connect crystal oscillating circuit, 4 pin connect reset circuit, the signal I/O end of 5 pin jointing temp sensors A 1, the power end of 6 pin jointing temp sensors A 1,7 pin connect the input end of light signal modulation module A2 through resistance R 3, optical fiber interface 9 pin of light signal modulation module A2 connect optical fiber interface 9 pin of light signal demodulation module H1 through optical fiber GX, by optical fiber GX temperature signal is spread out of like this with good insulation performance performance, the light signal demodulation module H1 that separates dim signal by low-pressure side restores temperature value again, the output terminal 6 pin correspondences of 6 light signal demodulation module H1 meet I/O mouth P10 ~ P15 of main frame U2, I/O mouth 16 pin of main frame U2 connect the base stage of triode Q2 through resistance R 4, the grounded emitter of triode Q2, its collector meets hummer B1, and the other end of hummer B1 connects+the 5V power supply through resistance R 6, and the PO mouth of main frame U2 connects display and control knob, its P2 mouth connects storer, its RXD mouth, the TXD mouth is connected communication interface.In case main frame judges that recording signal surpasses the temperature signal of setting, and just controls hummer B1 and reports to the police.
Claims (6)
1. high-tension switch cabinet temperature measurer, comprise a plurality of high-voltage contact heat detectors, main frame and the display that is connected with main frame, alarm, it is characterized in that: the structure of each high-voltage contact heat detector is identical, include temperature sensor, microprocessor, power module and light signal modulation module, wherein power module is distinguished the jointing temp sensor, microprocessor and light signal modulation module, the output terminal of the input end jointing temp sensor of microprocessor, its output termination light signal modulation module, the output terminal correspondence of light signal modulation module connects the light signal demodulation module through optical fiber, and the output terminal correspondence of light signal demodulation module connects the I/O mouth of main frame.
2. high-tension switch cabinet temperature measurer as claimed in claim 1 is characterized in that: power module adopts the 3.6V battery.
3. high-tension switch cabinet temperature measurer as claimed in claim 1, it is characterized in that: power module comprises current transformer L, resistance R 1, resistance R 5, rectifier bridge T, capacitor C 1 and voltage stabilizer Z, wherein current transformer L is directly from high-tension cable X power taking, its output terminal and resistance R 1 and connect after connect the input end of rectifier bridge T, the output terminal of rectifier bridge T is as the output terminal of 3.6V power supply, and capacitor C 1 and voltage stabilizer Z are attempted by between the output terminal of rectifier bridge T.
4. high-tension switch cabinet temperature measurer as claimed in claim 1, it is characterized in that: temperature sensor adopts the DS18B20 chip, microprocessor adopts the PIC12C508/509 chip, wherein 1 pin of microprocessor connects the 3.6V power supply, 2 pin, 3 pin connect crystal oscillating circuit, and 4 pin connect reset circuit, the signal I/O end of 5 pin jointing temp sensors, the power end of 6 pin jointing temp sensors, 7 pin connect the input end of light signal modulation module through resistance R 3.
5. high-tension switch cabinet temperature measurer as claimed in claim 1, it is characterized in that: the light signal modulation module adopts the HFBR-1414 chip, the light signal demodulation module adopts the HFBR-2412 chip, optical fiber interface 9 pin of light signal modulation module connect optical fiber interface 9 pin of light signal demodulation module through optical fiber GX, and the output terminal 6 pin correspondences of light signal demodulation module connect the I/O mouth of main frame.
6. high-tension switch cabinet temperature measurer as claimed in claim 1, it is characterized in that: main frame adopts the 89C52 chip, its I/O mouth P1 mouth correspondence connects the output terminal of light signal demodulation module, its I/O mouth 16 pin circuit taking alarm, its PO mouth connects display and control knob, its P2 mouth connects storer, and its RXD mouth, TXD mouth are connected communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150813 CN2876930Y (en) | 2004-11-23 | 2004-11-23 | Temp. tester for high voltage switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150813 CN2876930Y (en) | 2004-11-23 | 2004-11-23 | Temp. tester for high voltage switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876930Y true CN2876930Y (en) | 2007-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150813 Expired - Fee Related CN2876930Y (en) | 2004-11-23 | 2004-11-23 | Temp. tester for high voltage switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876930Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2454766C2 (en) * | 2010-05-24 | 2012-06-27 | Закрытое акционерное общество "Межрегиональное Производственное Объединение Технического Комплектования "Технокомплект" | Cabinet of cubicle switchboard |
| CN102636273A (en) * | 2012-03-25 | 2012-08-15 | 河南省电力公司安阳供电公司 | Switch node temperature monitoring system of distribution room |
-
2004
- 2004-11-23 CN CN 200420150813 patent/CN2876930Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2454766C2 (en) * | 2010-05-24 | 2012-06-27 | Закрытое акционерное общество "Межрегиональное Производственное Объединение Технического Комплектования "Технокомплект" | Cabinet of cubicle switchboard |
| CN102636273A (en) * | 2012-03-25 | 2012-08-15 | 河南省电力公司安阳供电公司 | Switch node temperature monitoring system of distribution room |
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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 |