CN204989277U - Take temperature monitoring's dc voltage divider - Google Patents
Take temperature monitoring's dc voltage divider Download PDFInfo
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- CN204989277U CN204989277U CN201520626815.0U CN201520626815U CN204989277U CN 204989277 U CN204989277 U CN 204989277U CN 201520626815 U CN201520626815 U CN 201520626815U CN 204989277 U CN204989277 U CN 204989277U
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Abstract
The utility model provides a take temperature monitoring's dc voltage divider, the device includes: divider resistance, voltage -sharing electric capacity, outer tube, interior epoxy bucket and heat exchanger, interior epoxy bucket is outer air chamber with the region that the overcoat circumference of cannon bone becomes, and the region that interior epoxy bucket encloses is interior air chamber, the device still includes temperature measurement optical fiber and temperature measurement system host computer, temperature measurement optical fiber installs in dc voltage divider on the epoxy bucket outer wall, and temperature measurement optical fiber is with real -time supervision's data transmission to temperature measurement system host computer. Improve single resistor or single capacitor element and open a way the trouble to the judgement of trouble when taking place, improve dc voltage divider's reliability. Personnel know system temperature sum of distribution analysis failure cause even be convenient for.
Description
Technical field
The utility model relates to divider technical field, is specifically related to a kind of divider with temperature monitoring.
Background technology
DC engineering quantity gets more and more, and ± 500kV and ± 800kV DC converter station, repeatedly divider accident occurs.DC transmission engineering divider adopts electric resistance partial pressure principle, and its high-voltage arm adopts multilevel resistance device cascaded structure.For ensureing the electric fields uniform of voltage divider in transient state process, at every one-level resistor in parallel equalizing capacitor, falling equal with the transient voltage maintained on every one-level resistor, ensureing the operational reliability of divider.In actual motion, there is the inefficacy because of single Resistor-Capacitor Unit in this structure, causes the possibility of divider output abnormality or complete failure.When single equalizing capacitor open circuit, then corresponding resistor will lose voltage equalizing protection, and under transient state surge voltage, this grade of resistor will bear superpotential and may cause damage; When short circuit appears in single equalizing capacitor, then corresponding resistor will by short circuit, and divider high-voltage arm resistance value reduces, and cause intrinsic standoff ratio to drift about, secondary voltage is overproof; When open circuit appears in single voltage grading resistor, then voltage divider secondary exports and lost efficacy, or at open circuit incision position Discharge Phenomena, causes the significantly high frequency overshoot and falling of secondary output voltage.
Utility model content
For overcoming above-mentioned defect, the utility model provides a kind of divider with temperature monitoring, the working temperature distribution of single divider resistance is monitored, improve the accuracy of monitoring and the reliability of high divider, be beneficial to collection temperature data, be conducive to analysis and research and grasp the distribution of divider running temperature.
For achieving the above object, the technical solution of the utility model is as follows:
With a divider for temperature monitoring, described divider comprises: divider resistance, equalizing capacitance, outer tube, interior epoxy bucket and heat interchanger; The outer wall of described interior epoxy bucket is provided with temperature-measuring optical fiber; The data of Real-Time Monitoring are transferred to temp measuring system main frame by described temperature-measuring optical fiber.
Described temp measuring system main frame comprises: signal processing unit, DSP processing unit, conventional memory, fault memorizer, fault threshold and fault alarm;
Described signal processing unit is connected with DSP processing unit, and described DSP processing unit is connected with fault alarm respectively at conventional memory, fault memorizer, fault threshold;
Temperature signal data is converted to digital signal by signal processing unit;
The temperature data that DSP processing unit monitor signal processing unit sends;
If temperature data is less than fault threshold, then temperature data is stored in conventional memory unit;
If temperature data is greater than fault threshold, then temperature data is stored in fault memory cell, and sends alarm command to fault alarm;
The type of alarm of fault alarm comprises: wireless network sends failure alarm signal and sends alerting signal to mobile terminal to the network platform and wireless module.
Be provided with interior epoxy bucket in described outer tube, the interior epoxy bucket of described outer tube and its inside is coaxially arranged, and described interior epoxy bucket is sealed gas chamber;
Described interior epoxy bucket is made up of interior epoxy bucket unit, and arrange interior air channel between adjacent interior epoxy bucket unit, the insulating gas that described epoxy leads in interior insulating gas and outer tube is circulated mutually by upper radiator air passage and base air channel.
Interior epoxy bucket unit is connected by inter-stage grading ring.
The inwall of described interior epoxy bucket unit is provided with voltage grading resistor and equalizing capacitor, and the voltage grading resistor that interior epoxy bucket unit inwall is installed is in parallel with equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
Described outer tube is extra-high voltage organic silicon rubber hollow bushing, and sleeve pipe is outside equipped with insulation full skirt.
Described insulating gas is SF
6gas, SF
6the pressure of gas is 0.2 ~ 0.5MPa.
The outer wall of described interior epoxy bucket unit is provided with voltage grading resistor and equalizing capacitor, and the voltage grading resistor that interior epoxy bucket unit inwall is installed is in parallel with equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
The outer wall of described interior epoxy bucket unit is provided with voltage grading resistor, and the inwall of described interior epoxy bucket unit is provided with equalizing capacitor, and described voltage grading resistor is in parallel with described equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
The inwall of described interior epoxy bucket unit is provided with voltage grading resistor, and the outer wall of described interior epoxy bucket unit is equipped with equalizing capacitor, and described voltage grading resistor is in parallel with described equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
With immediate prior art ratio, the beneficial effects of the utility model are as follows:
1. adopt redundancy structure, utilize the structure of divider high-voltage arm plural serial stage, design at the inner pre-buried optical fiber of every one-level, improve the judgement to fault when single resistor or single capacitor element open fault occur, improve the reliability of divider.
2. adopt the method for multiple spot monitor temperature, the working temperature distribution of single divider resistance is monitored, improves the accuracy of monitoring, be beneficial to collection temperature data, be conducive to analysis and grind the distribution of high grasp divider running temperature.
3. adopt temp measuring system main frame analyze fault and record ripple, wave recording when going wrong also carries out long-distance transmissions, even if be convenient to personnel to understand system temperature distribution and analyzing failure cause.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of divider in the utility model.
Fig. 2 is the utility model diagnostic system structure composition frame chart.
Wherein: 1-divider resistance; 2-outer tube; 3-insulating gas; 4-temperature-measuring optical fiber; Epoxy bucket in 5-; 6-optical fiber.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details:
As shown in Figure 1, a kind of divider Temperature Distribution monitoring device, device comprises: divider resistance, equalizing capacitance, outer tube, interior epoxy bucket, heat interchanger.The region that interior epoxy bucket and outer tube surround is outer air chamber, and the region that interior epoxy bucket surrounds is interior air chamber.
Outer tube and interior epoxy bucket coaxially arranged, interior epoxy bucket is by inside and outside two air chambers of being divided into of outer tube inside, and inside and outside two its top and bottom of air chamber are communicated with, and forms inside and outside two air chambers be communicated with.Two plenum interior fill SF
6; The top flange place that air chamber is communicated with inside and outside divider is provided with heat interchanger.Whole voltage grading resistor is arranged on the inner side of interior epoxy bucket from top to bottom uniformly, and when divider normally runs, insulating gas rises by the heat that its voltage grading resistor produces, and depression is formed at interior air chamber bottom.Rising insulating gas is by carry heat to top heat exchanger place, and the heat entrained by insulating gas conducts to divider outside through heat interchanger and distributes.Voltage grading resistor generates heat, there is temperature difference in inside and outside air chamber, draught head can be formed at the position up and down of interior air chamber and outer air chamber, insulating gas gets back to the depression bottom divider through outer air chamber, the heat again carrying voltage grading resistor generation rises to divider top, cause insulating gas to produce to circulate up and down, the temperature difference in the vertical direction of divider can be made to reduce, and the inner upper end of reduction outer tube and lower temperature gradient reach the object of balanced divider internal temperature gradient distribution.Equalizing capacitor can be considered lossless element, according to outer tube inner space and structure, can be arranged on inner side or the outside of interior epoxy bucket.
In divider, the symmetrical pre-buried some temperature-sensitive grating fibers of epoxy bucket outer wall, can play two kinds of monitoring effects to divider.One is that grating fibers can carry out omnibearing Real-Time Monitoring to the temperature of divider inside; Two is that the everywhere grating of pre-buried grating fibers all corresponds at a divider resistance, can according to the temperature variation of optical fiber measurement, monitor the working temperature distribution of each divider resistance accurately, judge that divider resistance is short circuit by the temperature variation at this place, open circuit or contact deteriorated and can carry out prefabricated in real time.
As shown in Figure 2, be temp measuring system main frame, system comprises: signal processing unit, DSP processing unit, conventional memory, fault memorizer and alarm unit;
Adopt analysis expert diagnostic system, analyze fault and record ripple, wave recording when going wrong also carries out long-distance transmissions, even if be convenient to personnel to understand working state of system and analyzing failure cause.
1.: signal processing unit is the signal processing unit based on FPGA, temperature detecting unit data are carried out arranging and being converted to digital signal;
2.: DSP processing unit foundation fault threshold and fault type, the temperature data that monitor signal processing unit sends;
If data are less than fault threshold, then temperature data timing is stored in the conventional memory unit of storer; If data are greater than fault threshold, then temperature data timing are stored in the fault memory cell of storer, and send alarm command to alarm unit; Timing memory gap is 10-360 minute.
Conventional memory unit is the storer storing temperature signal when divider normally works, and relative fault memory cell is the storer of independent resistance temperature when storing divider fault.
3.: the type of alarm of alarm unit comprises with wireless network transmission failure alarm signal and sends alarming short message with wireless module.
It is to be understood that content of the present invention and embodiment are intended to the practical application proving technical scheme provided by the present invention, should not be construed as limiting the scope of the present invention.Those skilled in the art inspired by the spirit and principles of the present invention, can do various amendment, equivalent replacement or improve.But these changes or amendment are all in the protection domain that application is awaited the reply.
Claims (10)
1. the divider with temperature monitoring, described divider comprises: divider resistance, equalizing capacitance, outer tube, interior epoxy bucket and heat interchanger; It is characterized in that: the outer wall of described interior epoxy bucket is provided with temperature-measuring optical fiber; The data of Real-Time Monitoring are transferred to temp measuring system main frame by described temperature-measuring optical fiber.
2. divider according to claim 1, is characterized in that: described temp measuring system main frame comprises: signal processing unit, DSP processing unit, conventional memory, fault memorizer, fault threshold and fault alarm;
Described signal processing unit is connected with DSP processing unit, and described DSP processing unit is connected with fault alarm respectively at conventional memory, fault memorizer, fault threshold;
Temperature signal data is converted to digital signal by signal processing unit;
The temperature data that DSP processing unit monitor signal processing unit sends;
If temperature data is less than fault threshold, then temperature data is stored in conventional memory unit;
If temperature data is greater than fault threshold, then temperature data is stored in fault memory cell, and sends alarm command to fault alarm;
The type of alarm of fault alarm comprises: wireless network sends failure alarm signal and sends alerting signal to mobile terminal to the network platform and wireless module.
3. divider according to claim 1, is characterized in that: be provided with interior epoxy bucket in described outer tube, and the interior epoxy bucket of described outer tube and its inside is coaxially arranged, and described interior epoxy bucket is sealed gas chamber;
Described interior epoxy bucket is made up of interior epoxy bucket unit, and arrange interior air channel between adjacent interior epoxy bucket unit, the insulating gas that described epoxy leads in interior insulating gas and outer tube is circulated mutually by upper radiator air passage and base air channel.
4. divider according to claim 3, is characterized in that: interior epoxy bucket unit is connected by inter-stage grading ring.
5. divider according to claim 3, it is characterized in that: the inwall of described interior epoxy bucket unit is provided with voltage grading resistor and equalizing capacitor, the voltage grading resistor that interior epoxy bucket unit inwall is installed is in parallel with equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
6. divider according to claim 1, is characterized in that: described outer tube is extra-high voltage organic silicon rubber hollow bushing, and sleeve pipe is outside equipped with insulation full skirt.
7. divider according to claim 3, is characterized in that: described insulating gas is SF
6gas, SF
6the pressure of gas is 0.2 ~ 0.5MPa.
8. the divider according to claim 3 or 5, it is characterized in that: the outer wall of described interior epoxy bucket unit is provided with voltage grading resistor and equalizing capacitor, the voltage grading resistor that interior epoxy bucket unit inwall is installed is in parallel with equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
9. the divider according to claim 3 or 5, it is characterized in that: the outer wall of described interior epoxy bucket unit is provided with voltage grading resistor, the inwall of described interior epoxy bucket unit is provided with equalizing capacitor, described voltage grading resistor is in parallel with described equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
10. the divider according to claim 3 or 5, it is characterized in that: the inwall of described interior epoxy bucket unit is provided with voltage grading resistor, the outer wall of described interior epoxy bucket unit is equipped with equalizing capacitor, described voltage grading resistor is in parallel with described equalizing capacitor, the voltage grading resistor series connection between interior epoxy bucket unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520626815.0U CN204989277U (en) | 2015-08-20 | 2015-08-20 | Take temperature monitoring's dc voltage divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520626815.0U CN204989277U (en) | 2015-08-20 | 2015-08-20 | Take temperature monitoring's dc voltage divider |
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| CN204989277U true CN204989277U (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546019A (en) * | 2016-06-27 | 2018-01-05 | 南京南瑞继保电气有限公司 | A kind of direct current resistive voltage transformer |
| CN108627683A (en) * | 2017-03-23 | 2018-10-09 | 国家电网公司 | One kind ± 1100kV dividers |
-
2015
- 2015-08-20 CN CN201520626815.0U patent/CN204989277U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546019A (en) * | 2016-06-27 | 2018-01-05 | 南京南瑞继保电气有限公司 | A kind of direct current resistive voltage transformer |
| CN107546019B (en) * | 2016-06-27 | 2020-07-28 | 南京南瑞继保电气有限公司 | Direct current resistance type voltage transformer |
| CN108627683A (en) * | 2017-03-23 | 2018-10-09 | 国家电网公司 | One kind ± 1100kV dividers |
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