CN203773007U - Overhead fault indicator for double current transformers - Google Patents
Overhead fault indicator for double current transformers Download PDFInfo
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- CN203773007U CN203773007U CN201420184340.XU CN201420184340U CN203773007U CN 203773007 U CN203773007 U CN 203773007U CN 201420184340 U CN201420184340 U CN 201420184340U CN 203773007 U CN203773007 U CN 203773007U
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- mutual inductor
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- transformer
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- 238000005070 sampling Methods 0.000 claims abstract description 35
- 241000272165 Charadriidae Species 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000005674 electromagnetic induction Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 3
- 230000009466 transformation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model discloses an overhead fault indicator for double current transformers, comprising a shell, an integrated dual-coil current transformer, a power supply module, an acquisition module, a main control module, an indicating module and a battery. The dual-coil current transformer comprises an electricity taking transformer and a sampling transformer, which are independent of each other and are easy to install. When alternating current flows through a closed loop, the electricity taking transformer generates electromagnetic induction and can power the indicator, and the sampling transformer senses current change and converts the current change into a small current signal through ratio transformation for the indicator to carry out sampling, AD conversion, calculation and logic judgment. By adopting the overhead fault indicator for double current transformers, alternating current transmission by the independent sampling transformer is realized, the problem of sampling precision of the indicator is solved, the accuracy of fault judging is improved, power supply by the independent electricity taking transformer is realized, the electromagnetic conversion efficiency is high, stable power is output, and the running reliability of the indicator is improved.
Description
Technical field
The utility model relates to a kind of fault detector of overhead transmission line, particularly a kind of built on stilts fault detector of double-current mutual inductor.
Background technology
Along with the growth of social economy's level, electric load rapid growth, power distribution network develop rapidly.But the feature of power distribution network is ground field width, area is wide, and circuit branch is many; Be subject to the reasons such as environment, weather, ageing equipment and engineering construction, having there is fault in distribution line, causes power failure, and affects social production and life, and therefore fast finding trouble spot becomes more and more important.The application of fault indicator for overhead lines brings great convenience to troubleshooting, is widely used.Its principle of work is in the time that circuit breaks down, and pointer detection changes to the electric current on circuit, and then whether analysis meter calculate and break down, to reach the object of indicator circuit fault.But due to line load situation complexity, line fault situation is varied, the success ratio of fault detector detection failure still has much room for improvement, and main cause is to cause not judgement to make mistakes to the sampling precision of line load.
The particularly application of two distant (being remote signalling, remote measurement) fault detector in recent years, using the acquisition precision of line current also as an important technical indicator.Current fault detector is to adopt single current transformer design substantially, is realized the function of power supply and sampling by a current transformer, does not generally reach requirement.
Utility model content
The problem existing for prior art, the utility model aim to provide a kind of can either high-precision collection electric current, the power supply that can continue ensures the double-current mutual inductor of the normal operation of fault detector again built on stilts fault detector.
The utility model provides a kind of built on stilts fault detector of double-current mutual inductor, comprise shell, integrated twin coil current transformer, power module, acquisition module, main control module and indicating module, described power module, acquisition module, main control module and indicating module are all located at the inside of described shell.
Described twin coil current transformer comprises electricity-getting mutual inductor and sampling mutual inductor, the iron core of described twin coil current transformer is made up of the derby of two and half arcs and is placed in described housing exterior, described in each, derby comprises power taking part and sampling section, when two derbies are closed, described twin coil current transformer is socketed on power circuit.
Described electricity-getting mutual inductor is connected with the port on described power module.
Described sampling mutual inductor is connected with the port on described acquisition module.
Described power module, acquisition module, indicating module are all connected with described main control module.
Further, the built on stilts fault detector of described double-current mutual inductor also comprises battery, and described battery is located at the inside of described shell, and is connected with described power module.
Further, described electricity-getting mutual inductor and described sampling mutual inductor are separate.
Further, described shell is transparent hemispherical.
Further, the bottom of described shell is provided with multiple pilot lamp.
Its electricity-getting mutual inductor coil of the built on stilts fault detector of the described double-current mutual inductor that the utility model provides is connected with power module, in the time having alternating current to pass through in closed loop, produces electromagnetic induction, can power to indicator; Sampling mutual inductor is connected with acquisition module, and in the time having alternating current to pass through in closed loop, induction current changes, and converts Weak current signal to by no-load voltage ratio, for indicator sampling, AD conversion, calculating and logic judgement; Described twin coil current transformer adopts the pincerlike closed loop configuration of side-by-side, is made up of two parts, by the effect tight closure of spring, can break into two with one's hands under external force under normal circumstances, is convenient to install; The core material of electricity-getting mutual inductor is high permeability magnetic material, is conducive to improve the power stage under starting current state, to obtain the higher electric flux that supplies; The built on stilts fault detector of described double-current mutual inductor has not only been realized and has been utilized the mutual inductor of independently sampling to carry out alternating current rheology and send, solve the problem of indicator sampling precision, improve the accuracy of failure judgement, also realize and utilized independently electricity-getting mutual inductor power supply, electromagnetic conversion efficiency is high, the power supply of stable output, improves indicator operational reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the built on stilts fault detector of a kind of double-current mutual inductor that the utility model proposes;
Fig. 2 is the principle schematic of the built on stilts fault detector of a kind of double-current mutual inductor that the utility model proposes.
Drawing reference numeral explanation
1-twin coil current transformer, 11-electricity-getting mutual inductor, the 12-mutual inductor of sampling, 2-power module, 3-acquisition module, 4-main control module, 5-indicating module, 6-shell, 7-battery, 8-power circuit.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment:
Please refer to Fig. 1 and Fig. 2, the utility model provides a kind of built on stilts fault detector of double-current mutual inductor, comprise shell 6, integrated twin coil current transformer 1, power module 2, acquisition module 3, main control module 4, indicating module 5 and battery 7, described power module 2, acquisition module 3, main control module 4, battery 7 and indicating module 5 are all located at the inside of described shell 6, and the bottom that described shell 6 is transparent hemispherical and described shell 6 is provided with multiple pilot lamp; Described battery 7 is connected with power module 2.
Please refer to Fig. 1 and Fig. 2, described twin coil current transformer 1 comprises electricity-getting mutual inductor 11 and sampling mutual inductor 12, the iron core of described twin coil current transformer 1 is made up of the derby of two and half arcs and is placed in described shell 6 outsides, described in each, derby comprises power taking part and sampling section, when two derbies are closed, described twin coil current transformer 1 is socketed on power circuit 8.
Please refer to Fig. 1 and Fig. 2, described electricity-getting mutual inductor 11 is connected with the port on described power module 2.
Please refer to Fig. 1, described sampling mutual inductor 12 is connected with the port on described acquisition module 3.
Described power module 2, acquisition module 3, indicating module 5 are all connected with described main control module 4.
Described electricity-getting mutual inductor 11 is separate with described sampling mutual inductor 12.
When work; incorporated by reference to Fig. 1 and Fig. 2; electricity-getting mutual inductor 11 forms closed loop around power circuit 8 under closure state; in the time that power circuit 8 has alternating current to pass through, electricity-getting mutual inductor 11 induction output supply currents, as the input of power module 2; after power module 2 carries out rectification, protection and voltage stabilizing to supply current; the direct supply of output 5V, for whole system power supply, has realized energy conversion and conveying on power circuit 8.
Except the electric current input of electricity-getting mutual inductor 11, power module 2 is also connected with battery 7, when on power circuit 8, do not have electric current by or when the little power supply that is not enough to provide enough of electric current, by battery 7, whole system is powered.When the current ratio on power circuit 8 is larger, when enough power supply can be provided, automatically switch, battery 7 is not powered, and with save power, ensures that indicator has enough operation life.
Sampling mutual inductor 12 is separate with electricity-getting mutual inductor 11, sampling mutual inductor 12 forms closed loop around power circuit 8 under closure state, in the time that power circuit 8 has alternating current to pass through, through the effect of twin coil current transformer 1 no-load voltage ratio, the little electric current that the large current conversion that line flows is crossed is zone of reasonableness, as the input of sampling module 3, sampling module 3 carries out rectification and converts to the DC voltage of 0~5V to little electric current, and keep, export main control module 4 to, realize AD conversion by main control module 4, be converted to digital signal, carry out the calculating of load current and the judgement of the logic of line fault for the computing unit of main control module 4.
As shown in Figure 2, easy for installation for making, electricity-getting mutual inductor 11 and sampling mutual inductor 12 are integrally combined.Electricity-getting mutual inductor 11, the integrated design side by side of sampling mutual inductor 12 are opened or closure simultaneously.When installation, twin coil current transformer 1 is broken into two with one's hands, first indicator is arranged on insulating bar, on power circuit 8, push up, then twin coil current transformer 1 closure, power circuit 8 forms closed loop with electricity-getting mutual inductor 11, sampling mutual inductor 12, has completed installation.
Its electricity-getting mutual inductor coil of the built on stilts fault detector of the described double-current mutual inductor that the utility model provides is connected with power module, in the time having alternating current to pass through in closed loop, produces electromagnetic induction, can power to indicator; Sampling mutual inductor is connected with acquisition module, and in the time having alternating current to pass through in closed loop, induction current changes, and converts Weak current signal to by no-load voltage ratio, for indicator sampling, AD conversion, calculating and logic judgement; Described twin coil current transformer adopts the pincerlike closed loop configuration of side-by-side, is made up of two parts, by the effect tight closure of spring, can break into two with one's hands under external force under normal circumstances, is convenient to install; The core material of electricity-getting mutual inductor is high permeability magnetic material, is conducive to improve the power stage under starting current state, to obtain the higher electric flux that supplies.
To sum up, the built on stilts fault detector of described double-current mutual inductor has not only been realized and has been utilized the mutual inductor of independently sampling to carry out alternating current rheology and send, solve the problem of indicator sampling precision, improve the accuracy of failure judgement, also realize and utilized independently electricity-getting mutual inductor power supply, electromagnetic conversion efficiency is high, and the power supply of stable output improves indicator operational reliability.
By reference to the accompanying drawings the utility model is carried out to exemplary description above; the technical solution of the utility model is not subject to the restriction of needle tubing body external form; as long as the various improvement that adopted technical solutions of the utility model to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all in protection domain of the present utility model.
Claims (5)
1. the built on stilts fault detector of a double-current mutual inductor, it is characterized in that, comprise shell, integrated twin coil current transformer, power module, acquisition module, main control module and indicating module, described power module, acquisition module, main control module and indicating module are all located at the inside of described shell, wherein:
Twin coil current transformer, comprise electricity-getting mutual inductor and sampling mutual inductor, the iron core of described twin coil current transformer is made up of the derby of two and half arcs and is placed in described housing exterior, described in each, derby comprises power taking part and sampling section, when two derbies are closed, described twin coil current transformer is socketed on power circuit;
Described electricity-getting mutual inductor is connected with the port on described power module;
Described sampling mutual inductor is connected with the port on described acquisition module;
Described power module, acquisition module, indicating module are all connected with described main control module.
2. the built on stilts fault detector of a kind of double-current mutual inductor according to claim 1, is characterized in that, also comprises battery, and described battery is located at the inside of described shell, and is connected with described power module.
3. the built on stilts fault detector of a kind of double-current mutual inductor according to claim 1, is characterized in that, described electricity-getting mutual inductor and described sampling mutual inductor are separate.
4. the built on stilts fault detector of a kind of double-current mutual inductor according to claim 1, is characterized in that, it is transparent hemispherical that described shell is.
5. the built on stilts fault detector of a kind of double-current mutual inductor according to claim 1, is characterized in that, the bottom of described shell is provided with multiple pilot lamp.
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CN201420184340.XU CN203773007U (en) | 2014-04-16 | 2014-04-16 | Overhead fault indicator for double current transformers |
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CN201420184340.XU CN203773007U (en) | 2014-04-16 | 2014-04-16 | Overhead fault indicator for double current transformers |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108776257A (en) * | 2018-08-10 | 2018-11-09 | 珠海优特电力科技股份有限公司 | High-voltage electriferous display locking device |
CN114594346A (en) * | 2022-05-09 | 2022-06-07 | 宁波天安智能电网科技股份有限公司 | Near-end measuring device and cubical switchboard of live line |
CN116599238A (en) * | 2023-07-18 | 2023-08-15 | 青岛鼎信通讯股份有限公司 | Modular fault indicator energy taking module and using method thereof |
CN117373807A (en) * | 2023-09-01 | 2024-01-09 | 国网信息通信产业集团有限公司 | Integrated current transformer and fault detection method |
-
2014
- 2014-04-16 CN CN201420184340.XU patent/CN203773007U/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108776257A (en) * | 2018-08-10 | 2018-11-09 | 珠海优特电力科技股份有限公司 | High-voltage electriferous display locking device |
CN108776257B (en) * | 2018-08-10 | 2024-04-09 | 珠海优特电力科技股份有限公司 | High-voltage electrified display locking device |
CN114594346A (en) * | 2022-05-09 | 2022-06-07 | 宁波天安智能电网科技股份有限公司 | Near-end measuring device and cubical switchboard of live line |
CN116599238A (en) * | 2023-07-18 | 2023-08-15 | 青岛鼎信通讯股份有限公司 | Modular fault indicator energy taking module and using method thereof |
CN116599238B (en) * | 2023-07-18 | 2023-10-31 | 青岛鼎信通讯股份有限公司 | Modular fault indicator energy taking module and using method thereof |
CN117373807A (en) * | 2023-09-01 | 2024-01-09 | 国网信息通信产业集团有限公司 | Integrated current transformer and fault detection method |
CN117373807B (en) * | 2023-09-01 | 2024-05-10 | 国网信息通信产业集团有限公司 | Integrated current transformer and fault detection method |
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Granted publication date: 20140813 |