CN204496034U - A kind of ultra-high-tension power transmission line rainfall measurement mechanism - Google Patents
A kind of ultra-high-tension power transmission line rainfall measurement mechanism Download PDFInfo
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- CN204496034U CN204496034U CN201520058206.XU CN201520058206U CN204496034U CN 204496034 U CN204496034 U CN 204496034U CN 201520058206 U CN201520058206 U CN 201520058206U CN 204496034 U CN204496034 U CN 204496034U
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Abstract
A kind of ultra-high-tension power transmission line rainfall monitoring device: comprise rainwater device (1), testing circuit (2) and single-chip microcomputer (4); Rainwater device comprises induction electrode (5) and ground electrode (6), ground electrode is nozzle metallic cylinder upward, the cylinder end, has leaking hole (14), barrel has side opening, induction electrode is metal cylinder, in metallic cylinder and and leave gap between metallic cylinder, the side of induction electrode is provided with lead-in wire (7), its insulation ground is drawn through metallic cylinder barrel side opening and is connected with described testing circuit signal input part (9), and ground electrode is provided with lead-in wire (8) and is connected with described testing circuit signal ground.The utility model accurately, reliably can monitor the whether rainfall of ultra-high-tension power transmission line environment, be convenient in ultra-high-tension power transmission line dynamic compatibilization process, the situation of accurate measurements transmission pressure surrounding environment rainfall, improve dynamic compatibilization system precision, guarantee to increase transmission line of electricity transmission capacity process safe, carry out smoothly.
Description
Technical field
The utility model relates to a kind of rainfall measurement mechanism, especially relates to a kind of rainfall measurement mechanism for monitoring the whether rainfall of ultra-high-tension power transmission line environment.
Background technology
Along with the growth stable continuously and healthily of Chinese national economy, especially recent years, along with the continuous increase of power consumption, transmitting capacity of the electric wire netting bottleneck problem becomes increasingly conspicuous, especially in the area of Economic contrast prosperity, as all the more so in Shanghai of East China, the coastland such as southern Jiangsu and Zhejiang.How effective, safe the transport capacity of raising transmission line of electricity be the problem that power department must think better of and solve.At present, more to the research of the transport capacity how improving transmission line of electricity both at home and abroad, electric pressure, increase transmission line of electricity as improved transmission line of electricity return number, adopt the measures such as heat resistance wire.By contrast, the transmission capacity and the dynamic compatibilization that suitably improve existing wire are modes the most economic, and it is emergent to be specially adapted under the peak regulation in peak of power consumption period in summer and overhaul of the equipments state.So-called dynamic compatibilization is exactly according to Practical Meteorological Requirements condition, excavates the potentiality of wire, thus suitably improves the transmission power of wire.
When conductor allowable temperature one timing, the current-carrying capacity of wire is subject to the impact of the factors such as intensity of sunshine, wind speed size and wind speed direction, the characteristic of wire itself and the environment temperature at wire place place.At present, no matter ieee standard, China Electrical Engineer handbook or Morgen formula, the maximum current-carrying capacity computing method of transmission line of electricity all rely on the thermal balance equation of wire.Utilize this equation to calculate the maximum current-carrying capacity of wire and need the environment weather parameters such as known environment temperature, sunshine, wind speed and direction.Owing to not considering conductive line surfaces moisture evaporative heat loss project in this thermal balance equation, the conductor temperature under causing this formula cannot calculate rain, greasy weather gas, has inadequate natural endowment.In actual applications, when there is rainfall, conductive line surfaces temperature may, lower than environment temperature, cause thermal balance equation without solution, thus can not determine the maximum current-carrying capacity of rainy weather condition lower wire.
The field of at present both at home and abroad relevant research high voltage electricity transmission conductive wire on-line measurement mainly concentrate on monitor ultra-high-tension power transmission line temperature, environment temperature, sunshine, wind speed and direction aspect, do not consider the impact of environment rain fall on transmission line of electricity transmission capacity, but the impact of rainy weather on circuit transmission capacity is huge.
Utility model content
Technical problem to be solved in the utility model, just be to provide a kind of rainfall measurement mechanism accurately, reliably monitoring the whether rainfall of ultra-high-tension power transmission line environment, be convenient in ultra-high-tension power transmission line dynamic compatibilization process, the situation of accurate measurements transmission pressure surrounding environment rainfall, improve dynamic compatibilization system precision, guarantee to increase transmission line of electricity transmission capacity process safe, carry out smoothly.
The utility model solves the technical scheme that its technical matters adopts:
A kind of ultra-high-tension power transmission line rainfall monitoring device, is characterized in that: comprise rainwater device (1), testing circuit (2) and single-chip microcomputer (4);
Described rainwater device (1) comprises induction electrode (5) and ground electrode (6), ground electrode (6) is nozzle metallic cylinder upward, the cylinder end, has leaking hole 14, barrel has side opening, induction electrode (5) is metal cylinder, in metallic cylinder and and leave gap between metallic cylinder, the side of induction electrode (5) is provided with lead-in wire 7, its insulation ground is drawn through metallic cylinder barrel side opening and is connected with described testing circuit (2) signal input part (9), ground electrode (6) is provided with lead-in wire (8) and is connected with described testing circuit (2) signal ground,
Described testing circuit (2) comprises 3.6V power supply, the resistance of two 500k Ω and a normal operation amplifier AD8031, the signal input part (9) of the positive pole of operational amplifier A D8031 and testing circuit (2), signal input part (9) connects 3.6V power supply and signal ground through a 500k Ω resistance simultaneously respectively, and the signal output part (10) of testing circuit (2) is connected with the analog to digital conversion input end (17) of described single-chip microcomputer (4); Threshold voltage U in described single-chip microcomputer (4) is set to 1.8V.
Gap between described induction electrode (5) and metallic cylinder is 2mm.
Described metallic cylinder barrel side opening is threaded hole, is embedded with duralumin metal circular tube (15) in threaded hole, is provided with insulated nylon pipe (13) in duralumin metal circular tube (15).
Described induction electrode (5) side is provided with duralumin round metal bars (16), and lead-in wire 7 is by duralumin round metal bars (16) end electrical connection induction electrode (5).
Described single-chip microcomputer (4) is any one common single-chip microcomputer with analog-digital conversion function and diagnostic function, when the voltage that single-chip microcomputer monitors analog to digital conversion input end (17) is less than threshold voltage U, be diagnosed as rainfall, otherwise be diagnosed as without rainfall.
Hinge structure, the utility model has following beneficial effect:
1) induction electrode (5) of rainwater device (1) and ground electrode (6) are made respectively cylinder and the cylinder being with bottom surface, increase effectively the area in space between induction electrode and ground electrode, when there is rainfall, more rainwater can be collected in this space, resistance between induction electrode (5) and ground electrode (6) is reduced more, and then it is more obvious that testing circuit (2) output signal voltage is changed.
2) bottom surface of ground electrode (6) is porose, is convenient to rainwater and flows out.After rainfall stops, rainwater between induction electrode (5) and ground electrode (6) in space flows out from this hole under gravity, and the resistance between induction electrode (5) and ground electrode (6) is restored to the numerical value before rainfall.
3) induction electrode (5) of rainwater device (1) is placed among ground electrode (6), make ground electrode (6) produce shielding action to induction electrode (5), and then make induction electrode (5) not by the impact of transmission line of electricity high-voltage conducting wires electric field.
4) utilize single-chip microcomputer (4) that simulating signal is converted into digital signal, and diagnose, the data processing function of single-chip microcomputer can be played, digital filtering and complicated algorithm process are carried out to signal, thus improve the accuracy of diagnosis.
Accompanying drawing explanation
Fig. 1 is composition schematic diagram of the present utility model;
Fig. 2 is rainwater device structure cross-sectional schematic of the present utility model;
Fig. 3 is rainwater device structure schematic top plan view of the present utility model.
In figure: 1-rainwater device, 2-testing circuit, 4-single-chip microcomputer, 5-induction electrode, 6-ground electrode, 7-induction electrode goes between, and 8-ground electrode goes between, 9-signal input part, 10-testing circuit output terminal 13-insulated nylon pipe, 14-leaking hole, 16-duralumin round metal bars, the analog to digital conversion input end of 17-single-chip microcomputer.
Embodiment
As depicted in figs. 1 and 2, rainfall monitoring device of the present utility model, comprises rainwater device (1), testing circuit (2) and single-chip microcomputer (4).
Rainwater device (1) comprises induction electrode (5) and ground electrode (6), ground electrode (6) is nozzle metallic cylinder upward, the cylinder end, has leaking hole 14, barrel has side threaded hole, be embedded with duralumin metal circular tube (15) in the threaded hole of side, in duralumin metal circular tube (15), be provided with insulated nylon pipe (13); Induction electrode (5) is metal cylinder, in metallic cylinder and and leave 2mm gap between metallic cylinder, the side of induction electrode (5) is provided with duralumin round metal bars (16), lead-in wire 7 is by duralumin round metal bars (16) end electrical connection induction electrode (5), its insulation ground is drawn through metallic cylinder barrel side opening and is connected with described testing circuit (2) signal input part (9), and ground electrode (6) is provided with lead-in wire (8) and is connected with described testing circuit (2) signal ground.
Testing circuit (2) comprises 3.6V power supply, the resistance of two 500k Ω and a normal operation amplifier AD8031, the signal input part (9) of the positive pole of operational amplifier A D8031 and testing circuit (2), signal input part (9) connects 3.6V power supply and signal ground through a 500k Ω resistance simultaneously respectively, and the signal output part (10) of testing circuit (2) is connected with the analog to digital conversion input end (17) of described single-chip microcomputer (4); Threshold voltage U in described single-chip microcomputer (4) is set to 1.8V.
Described single-chip microcomputer (4) is any one common single-chip microcomputer with analog-digital conversion function and diagnostic function,
See Fig. 2, ground electrode (6) outside diameter 40mm, interior circular diameter 30mm, the high 45mm of cylinder, barrel and base thickness 5mm; Induction electrode (5) diameter 26mm, height 36mm.
Round metal bars (16) on induction electrode (5) is fixed on by insulated nylon pipe (13) in the cylinder (15) on ground electrode (6), thus makes induction electrode (5) relative fixing with ground electrode (6).
Principle of work:
When without rainfall, between induction electrode 5 and ground electrode 6, resistance is the resistance of clearance, and much larger than 500k Ω, testing circuit (2) exports the voltage signal of 1.8V; When there being rainfall, the resistance between induction electrode 5 and ground electrode 6 is the resistance of rainwater, and the voltage signal that testing circuit (2) exports is less than 1.8V.
As shown in Figure 1, common single-chip microcomputer C8051F005 selected by single-chip microcomputer (4), has analog-digital conversion function and diagnostic function, and testing circuit (2) output voltage signal accesses its analog to digital conversion input interface.Threshold voltage U in single-chip microcomputer (4) is set to 1.8V, and when there being rainfall, the voltage of the input end (13) of single-chip microcomputer (4) is less than 1.8V, has been diagnosed as rainfall; During when rainfall stopping or without rainfall, the voltage of input end (13) equals 1.8V, is diagnosed as without rainfall.
Claims (5)
1. a ultra-high-tension power transmission line rainfall monitoring device, is characterized in that: comprise rainwater device (1), testing circuit (2) and single-chip microcomputer (4);
Described rainwater device (1) comprises induction electrode (5) and ground electrode (6), described ground electrode (6) is nozzle metallic cylinder upward, the cylinder end, has leaking hole (14), barrel has side opening, and ground electrode (6) is provided with lead-in wire (8) and is connected with described testing circuit (2) signal ground; Described induction electrode (5) is metal cylinder, be arranged in round metal tubular ground electrode (6) and and leave gap between metallic cylinder, the side of induction electrode (5) is provided with lead-in wire (7), and its insulation ground is drawn through metallic cylinder barrel side opening and is connected with described testing circuit (2) signal input part (9);
Described testing circuit (2) comprises 3.6V power supply, the resistance of two 500k Ω and a normal operation amplifier AD8031, the signal input part (9) of the positive pole of operational amplifier A D8031 and testing circuit (2), signal input part (9) connects 3.6V power supply and signal ground through a 500k Ω resistance respectively; The signal output part (10) of testing circuit (2) is connected with the analog to digital conversion input end (17) of described single-chip microcomputer (4); Threshold voltage U in described single-chip microcomputer (4) is set to 1.8V.
2. ultra-high-tension power transmission line rainfall monitoring device according to claim 1, is characterized in that: the gap between described induction electrode (5) and metallic cylinder is 2mm.
3. ultra-high-tension power transmission line rainfall monitoring device according to claim 2, it is characterized in that: be embedded with duralumin metal circular tube (15) in described metallic cylinder barrel side opening, in duralumin metal circular tube (15), be provided with insulated nylon pipe (13).
4. ultra-high-tension power transmission line rainfall monitoring device according to claim 3, it is characterized in that: described induction electrode (5) side is provided with duralumin round metal bars (16), lead-in wire (7) is by duralumin round metal bars (16) end electrical connection induction electrode (5).
5. ultra-high-tension power transmission line rainfall monitoring device according to claim 4, it is characterized in that: described single-chip microcomputer (4) is for having the single-chip microcomputer of analog-digital conversion function and diagnostic function, when the voltage that single-chip microcomputer monitors analog to digital conversion input end (17) is less than threshold voltage U, be diagnosed as rainfall, otherwise be diagnosed as without rainfall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520058206.XU CN204496034U (en) | 2015-01-27 | 2015-01-27 | A kind of ultra-high-tension power transmission line rainfall measurement mechanism |
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| CN201520058206.XU CN204496034U (en) | 2015-01-27 | 2015-01-27 | A kind of ultra-high-tension power transmission line rainfall measurement mechanism |
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| CN204496034U true CN204496034U (en) | 2015-07-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006847A (en) * | 2019-12-27 | 2020-04-14 | 广东电网有限责任公司电力科学研究院 | Rainfall device, parameter calibration method of rainfall device and related device |
| CN114035245A (en) * | 2021-10-20 | 2022-02-11 | 深圳市欧赛特电子有限公司 | Rainfall detection device and method |
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2015
- 2015-01-27 CN CN201520058206.XU patent/CN204496034U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006847A (en) * | 2019-12-27 | 2020-04-14 | 广东电网有限责任公司电力科学研究院 | Rainfall device, parameter calibration method of rainfall device and related device |
| CN111006847B (en) * | 2019-12-27 | 2022-01-25 | 广东电网有限责任公司电力科学研究院 | Rainfall device, parameter calibration method of rainfall device and related device |
| CN114035245A (en) * | 2021-10-20 | 2022-02-11 | 深圳市欧赛特电子有限公司 | Rainfall detection device and method |
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