CN2508253Y - High-voltage transmission line insulator live line testing device - Google Patents
High-voltage transmission line insulator live line testing device Download PDFInfo
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- CN2508253Y CN2508253Y CN 01270277 CN01270277U CN2508253Y CN 2508253 Y CN2508253 Y CN 2508253Y CN 01270277 CN01270277 CN 01270277 CN 01270277 U CN01270277 U CN 01270277U CN 2508253 Y CN2508253 Y CN 2508253Y
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Abstract
The utility model relates to a high-voltage transmission line insulator live line testing device which comprises an insulator detecting unit which is connected with a checked insulator and outputs detection signals to a detecting controlling unit connected with the insulator detecting unit and a detecting controlling unit which processes and outputs the detection signals of the insulator detecting unit. The utility model applies detection signals to the detected insulator through the detecting device, can measure leakage current of each insulator one by one and quantitatively under charged conditions, and can further quantitatively and exactly calculate electrical resistance value of the detected insulator and quantitatively detect insulation resistance of the insulator by simply making use of Ohm. The utility model thoroughly solves a problem of live line testing of the high voltage transmission line and overcomes the defects that the traditional detecting method of the insulator can not be quantized.
Description
Technical field:
The utility model relates to the device that a kind of high-voltage transmission line insulator live detects, and is meant a kind of being used under electriferous state especially, the device of detection by quantitative high-voltage transmission line insulator resistance value.
Background technology:
The size of high-voltage transmission line insulator resistance value, directly affect the safe operation of transmission line of electricity, in a single day this insulator goes wrong, and just must change immediately, otherwise will influence the operation of ultra-high-tension power transmission line, serious also can cause heavy losses to the operation and the people's lives and properties of national economy.
Though the backroom boys has made many-sided unremitting effort, for now, the common method that detects for high-voltage transmission line insulator has:
Voltage distribution: promptly the voltage distribution of insulator is measured, then corresponding measured value is calculated, judge by the result of calculation that obtains whether tested insulator is normal; The calculating of this method is very complicated, trouble;
The bead electric discharge: whether the voltage that the distance when its bead that is connected to the insulator two ends by measurement produces electric discharge phenomena is judged the insulator two ends, obtain the dividing potential drop situation of tested insulator indirectly, thereby it is normal to detect corresponding tested insulator;
The far infrared detection method: its principle is by the far infrared that tested insulator sent being surveyed, being judged by its ultrared distribution situation of sending whether corresponding insulation is normal then; But the use of this method needs good and stable meteorological condition, otherwise extraneous thermal source can't overcome measuring the interference that is caused.
Above detection method respectively has short long, but they all have a common defective: these detect and all belong to qualitative detection; Therefore and the greatest problem of qualitative detection is: can't measure the insulating resistance value of each sheet insulator accurately, quantitatively, more can't discern and leak electricity but puncture as yet, and be in the insulator of critical damage state.
Summary of the invention:
The purpose of this utility model is to provide a kind of device of high-voltage transmission line insulator live detection, and this device can be measured the insulating resistance value of each sheet insulator quantitatively under electriferous state.
The purpose of this utility model is achieved in that
The device that a kind of high-voltage transmission line insulator live detects which comprises at least: connect detected insulator, and detection signal is outputed to the insulator probe unit of connected detection control module; The detection control module that the detection signal of insulator probe unit is handled and exported.
This insulator probe unit comprises at least: be used to connect the test rod of insulator more than one and be installed between the test rod, one or more pressure-equalizing device; The two ends of this pressure-equalizing device are connected with test rod respectively, and the two ends mutually insulated of pressure-equalizing device.
Aforesaid pressure-equalizing device is provided with voltage equalizing ball, voltage equalizing ball web member and insulating sleeve at least; This voltage equalizing ball is fixed on the insulating sleeve by the voltage equalizing ball web member.
This detection control module comprises at least: protection housing, testing circuit, sampling and change-over circuit, communication interface circuit; This testing circuit, sampling and change-over circuit, communication interface circuit are installed in the protection enclosure interior; and the output terminal of this testing circuit is connected to the input end of sampling and change-over circuit; sampling and change-over circuit are connected with the communication interface circuit, and external unit detects the control module communication by this communication interface circuit and this.
Aforesaid protection housing is made of metal material.
Aforesaid testing circuit comprises at least: input/output signal interface, high-frequency step-up transformer, rectification circuit, current detection circuit, voltage detecting circuit and two test rod splicing ears; Wherein,
The high-frequency signal input end that is passed through the input/output signal interface by the high-frequency detection signal of sampling and change-over circuit is exported is connected to the elementary of high-frequency step-up transformer;
The secondary input end that is connected to rectification circuit of this high-frequency step-up transformer;
One output terminal of this rectification circuit is connected to a test rod splicing ear, and another output terminal of this rectification circuit is connected respectively to the current detection signal output terminal of another test rod splicing ear and input/output signal interface through the current detection circuit of series connection with it;
The two ends of voltage detecting circuit are connected respectively to two test rod splicing ears; It detects the voltage detection signal output terminal that output terminal is connected to the input/output signal interface.
Aforesaid sampling and change-over circuit comprise at least: detect interface, I/O change-over circuit, data processing and memory circuit, output interface; Wherein,
Data processing is connected with the I/O change-over circuit with memory circuit, and this data processing and memory circuit output high frequency sampling control signal, sampling select control signal to this I/O change-over circuit; I/O change-over circuit output current detects digital signal, voltage detecting digital signal to data processing and memory circuit;
The I/O change-over circuit is connected with the detection interface, and the high frequency sampled signal of this I/O change-over circuit outputs to this detection interface; The current detection signal, the voltage detection signal that detect interface output to this I/O change-over circuit;
Data processing also is connected with output interface with memory circuit, and its output testing result signal is to this output interface.
Aforesaid data processing and memory circuit comprise CPU and storer at least, and this CPU is connected with read-write control line by data line with storer.
Aforesaid I/O change-over circuit is provided with more than one sampling amplifier, one or more analog/digital converter, output conversion circuit at least and comprises one or more high-frequency detection signal drive unit;
The input end of this sampling amplifier is connected with current detection signal, voltage detection signal, and the output terminal of this sampling amplifier is connected to the analog input end of corresponding analog/digital converter;
The output terminal of this analog/digital converter is current detecting digital signal, the voltage detecting digital signal output end of this I/O change-over circuit.
The input end of this high-frequency detection signal drive unit is connected with the high frequency sampling control signal, its output terminal output high frequency sampled signal.
Aforesaid testing circuit test rod splicing ear place also is provided with ac short circuit electric capacity or DC-isolation electric capacity.
The utility model applies detection signal by aforesaid pick-up unit to tested insulator, can be under electriferous state, measure one by one, the leakage current of each sheet insulator quantitatively, and then can utilize ohm theorem accurately to calculate the resistance value of tested insulator simply, detect the insulation resistance of insulator quantitatively, thoroughly solve the difficult problem of the charged detection of ultra-high-tension power transmission line, overcome the deficiency that the conventional insulators detection method can not quantize.
Description of drawings:
Fig. 1 is the utility model theory diagram.
Fig. 2 is the circuit theory diagrams of testing circuit in the utility model one preferred embodiment.
Fig. 3 is the sampling and the circuit theory diagrams of change-over circuit in the utility model one preferred embodiment.
Fig. 4 is the utility model insulator probe unit and the synoptic diagram that is connected with tested insulator thereof.
The synoptic diagram that Fig. 5 is detected insulator by mechanical carrier carrying for the utility model.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
Referring to Fig. 1, Fig. 4, the utility model is provided with and connects detected insulator Z, and detection signal is outputed to the insulator probe unit L of connected detection control module K; The detection control module K that the detection signal of insulator probe unit L is handled and exported.
This insulator probe unit L comprises at least: be used to connect the test rod G of insulator Z more than one and be installed between the test rod G, one or more pressure-equalizing device L0; The two ends of this pressure-equalizing device L0 are connected with test rod G respectively, and the two ends mutually insulated of pressure-equalizing device L0.
Aforesaid pressure-equalizing device L0 is provided with voltage equalizing ball L1, voltage equalizing ball web member L2 and insulating sleeve L3 at least; This voltage equalizing ball L1 is fixed on the insulating sleeve L3 by voltage equalizing ball web member L2.
When pressure-equalizing device L0 is one when above, each voltage equalizing ball L1 interconnects with equipotential lead L4.
This detection control module K comprises at least: testing circuit, sampling and change-over circuit, communication interface circuit; The output terminal of this testing circuit is connected to the input end of sampling and change-over circuit, and sampling and change-over circuit are connected with the communication interface circuit, and external unit detects the control module communication by this communication interface circuit and this.Sampling and change-over circuit also are provided with output interface, detect control module and can testing result be outputed to outside demonstration or data sending apparatus by this output interface.
Above-mentioned detection control module K is provided with the protection housing, and this protection housing is made of metal material; Testing circuit of the present utility model, sampling and change-over circuit, communication interface circuit are installed in the protection housing; This containment vessel body and function low carbon steel plate is made, and shielding electromagnetic wave is to detecting the interference of control module effectively.
Referring to Fig. 2, testing circuit one input/output signal interface J1, a high-frequency step-up transformer T1 of the utility model one preferred embodiment, the rectification circuit that is constituted by commutation diode D1, D2, D3, D4, the current detection circuit that constitutes by resistance R 3, voltage detecting circuit and two test rod splicing ears of forming by resistance R 1, R2; Between these two test rod splicing ears, be provided with an ac short circuit capacitor C 3; Wherein,
The high-frequency signal input end (pin 1,5) that is passed through input/output signal interface J1 by the high-frequency detection signal of sampling and change-over circuit is exported is connected to the elementary of high-frequency step-up transformer T1; The secondary input end that is connected to the rectification circuit that is constituted by commutation diode D1, D2, D3, D4 of this high-frequency step-up transformer T1;
One output terminal of this rectification circuit is connected to a test rod splicing ear, another output terminal of this rectification circuit is connected to another test rod splicing ear through the resistance R 3 of series connection with it, and the two ends of this resistance R 3 are connected to the current detection signal output terminal (pin 2,4) of input/output signal interface J1;
The two ends of the voltage detecting circuit of being made up of resistance R 1, R2 are connected respectively to two test rod splicing ears; Tapping between resistance R 1, R2 is the detection output terminal of this voltage detecting circuit, and this detection output terminal is connected to the voltage detection signal output terminal (pin 3) of input/output signal interface.
Just can obtain the voltage and the leakage current signal thereof at insulator two ends between two test rods by above-mentioned circuit, this signal is handled among can being sent to the sampling that is connected with this testing circuit and change-over circuit by input/output signal interface J1, computing, storage and output.
Referring to Fig. 3, sampling and change-over circuit in the utility model one preferred embodiment are provided with a CPU, this CPU is connected with an analog/digital converter U2 with a storer U6 respectively by its data, address wire P00-P07, A8-A15 and read-write control line (pin 17,18), this CPU receives the digital signal by analog/digital converter U2 output, and with the data storage handled among storer U6.
The input end Vin+ of this analog/digital converter U2 is connected with the output terminal of sampling switch U4A, U4B, U4C and U4D simultaneously, and this sampling switch U4A, U4B, U4C and U4D accept to select the control of control signal P1.2, P1.6, P1.7, P1.5 respectively the signal of its input end to be sent to the input end Vin+ of analog/digital converter U2 from the sampling of CPU; The output terminal of sampling amplifier U7, U8 is connected respectively to sampling switch U4D and U4B, and the input end of sampling amplifier U7, U8 is connected respectively with from the voltage detecting input signal, the current detecting input signal (pin 3, pin 4) that detect interface J5; This detection interface J5 is connected with the input/output signal interface J1 of testing circuit and just the signal of this testing circuit detection output can be received among sampling and the change-over circuit.
CPU in sampling and the change-over circuit exports a high-frequency detection control signal TIME, this high-frequency detection control signal TIME is connected to the control input end of the high-frequency detection signal drive circuit of being made up of switching tube Q3 and field effect transistor Q2, the output terminal of this high-frequency detection signal drive circuit is connected with detection interface J5, sends the high-frequency detection signal.
CPU output testing result signal P1.0, P1.1, P1.3 and P1.4 in sampling and the change-over circuit; This testing result signal P1.0, P1.1 are connected with output interface J7, and external wireless emitter that is connected with this output interface J7 or display device are obtained the detection data of sampling and change-over circuit output by this output interface J7; This testing result signal P1.3 is connected to the control end of a switching tube Q1, and the output of this switching tube Q1 meets a sound circuit LS1, and this sound circuit LS1 sends voice signal by this testing result signal P1.3 control; One light emitting diode D1 is connected between testing result signal P1.4 and the power supply, and this light emitting diode D1 is luminous by testing result signal P1.4 control.
Communication signal RXD and the TXD of CPU are connected to a communication interface circuit U 3 in sampling and the change-over circuit, the communication input signal end R1IN of this communication interface circuit U 3 and R2IN, output signal end T1OUT and T2OUT are connected to external unit communication interface J2, and external unit is by this interface and the utility model communication.
Referring to Fig. 5, the utility model can also be fixed on the mechanical carrier M, this mechanical carrier M can move on insulator Z voluntarily, the insulator probe unit L that is fixed on this mechanical carrier M connects the two ends of tested insulator Z by its test rod G, and voltage and leakage data that will this tested insulator Z under the control that detects control module K collect; Along with moving of this mechanical carrier M, the utility model that is fixed on this mechanical carrier M just can carry out quantitative detection to all insulator Z, and these detection data can be launched by the wireless launcher that is connected with detection control module K output interface, or by showing with the display device that is connected with detection control module output interface; Simultaneously, the data that detected can also be stored among the interior storer of this detection control module.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1, a kind of device of high-voltage transmission line insulator live detection is characterized in that, which comprises at least:
Connect detected insulator, and detection signal is outputed to the insulator probe unit of connected detection control module;
The detection control module that the detection signal of insulator probe unit is handled and exported.
2, the device that detects of high-voltage transmission line insulator live according to claim 1, it is characterized in that: this insulator probe unit comprises at least: be used to connect the test rod of insulator more than one and be installed between the test rod, one or more pressure-equalizing device; The two ends of this pressure-equalizing device are connected with test rod respectively, and the two ends mutually insulated of pressure-equalizing device.
3, the device of high-voltage transmission line insulator live detection according to claim 2, it is characterized in that: described pressure-equalizing device is provided with voltage equalizing ball, voltage equalizing ball web member and insulating sleeve at least; This voltage equalizing ball is fixed on the insulating sleeve by the voltage equalizing ball web member.
4, the device of high-voltage transmission line insulator live detection according to claim 1, it is characterized in that: this detection control module comprises at least: protection housing, testing circuit, sampling and change-over circuit, communication interface circuit; This testing circuit, sampling and change-over circuit, communication interface circuit are installed in the protection enclosure interior; and the output terminal of this testing circuit is connected to the input end of sampling and change-over circuit; sampling and change-over circuit are connected with the communication interface circuit, and external unit detects the control module communication by this communication interface circuit and this.
5, the device of high-voltage transmission line insulator live detection according to claim 4, it is characterized in that: described protection housing is made of metal material.
6, the device of high-voltage transmission line insulator live detection according to claim 4, it is characterized in that: described testing circuit comprises at least: input/output signal interface, high-frequency step-up transformer, rectification circuit, current detection circuit, voltage detecting circuit and two test rod splicing ears; Wherein,
The high-frequency signal input end that is passed through the input/output signal interface by the high-frequency detection signal of sampling and change-over circuit is exported is connected to the elementary of high-frequency step-up transformer;
The secondary input end that is connected to rectification circuit of this high-frequency step-up transformer;
One output terminal of this rectification circuit is connected to a test rod splicing ear, and another output terminal of this rectification circuit is connected respectively to the current detection signal output terminal of another test rod splicing ear and input/output signal interface through the current detection circuit of series connection with it;
The two ends of voltage detecting circuit are connected respectively to two test rod splicing ears; It detects the voltage detection signal output terminal that output terminal is connected to the input/output signal interface.
7, the device of high-voltage transmission line insulator live detection according to claim 4, it is characterized in that: described sampling and change-over circuit comprise at least: detect interface, I/O change-over circuit, data processing and memory circuit, output interface; Wherein,
Data processing is connected with the I/O change-over circuit with memory circuit, and this data processing and memory circuit output high frequency sampling control signal, sampling select control signal to this I/O change-over circuit; I/O change-over circuit output current detects digital signal, voltage detecting digital signal to data processing and memory circuit;
The I/O change-over circuit is connected with the detection interface, and the high frequency sampled signal of this I/O change-over circuit outputs to this detection interface; The current detection signal, the voltage detection signal that detect interface output to this I/O change-over circuit;
Data processing also is connected with output interface with memory circuit, and its output testing result signal is to this output interface.
8, the device of high-voltage transmission line insulator live detection according to claim 7, it is characterized in that: described data processing and memory circuit comprise CPU and storer at least, this CPU is connected with read-write control line by data line with storer.
9, the device that detects of high-voltage transmission line insulator live according to claim 7 is characterized in that: described I/O change-over circuit is provided with more than one sampling amplifier, one or more analog/digital converter, output conversion circuit at least and comprises one or more high-frequency detection signal drive unit;
The input end of this sampling amplifier is connected with current detection signal, voltage detection signal, and the output terminal of this sampling amplifier is connected to the analog input end of corresponding analog/digital converter;
The output terminal of this analog/digital converter is current detecting digital signal, the voltage detecting digital signal output end of this I/O change-over circuit.
The input end of this high-frequency detection signal drive unit is connected with the high frequency sampling control signal, its output terminal output high frequency sampled signal.
10, according to the device of claim 4 or 6 described high-voltage transmission line insulator lives detections, it is characterized in that: described testing circuit test rod splicing ear place also is provided with ac short circuit electric capacity or DC-isolation electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01270277 CN2508253Y (en) | 2001-11-06 | 2001-11-06 | High-voltage transmission line insulator live line testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01270277 CN2508253Y (en) | 2001-11-06 | 2001-11-06 | High-voltage transmission line insulator live line testing device |
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| CN2508253Y true CN2508253Y (en) | 2002-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01270277 Expired - Fee Related CN2508253Y (en) | 2001-11-06 | 2001-11-06 | High-voltage transmission line insulator live line testing device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320366C (en) * | 2001-11-05 | 2007-06-06 | 北京深浪电子技术有限公司 | Detection method and device for live insulator in high-voltage transmission line |
| CN103454560A (en) * | 2013-09-03 | 2013-12-18 | 辽宁工程技术大学 | Pollution flashover monitoring device |
| CN103487731A (en) * | 2013-09-18 | 2014-01-01 | 国家电网公司 | Insulator chain testing device |
| CN103630731A (en) * | 2013-12-09 | 2014-03-12 | 广东电网公司电力科学研究院 | Leakage current sampling device and leakage current sampling method |
| CN103743954A (en) * | 2013-12-27 | 2014-04-23 | 北京天诚同创电气有限公司 | Insulation performance detecting device |
| CN103869165A (en) * | 2012-12-17 | 2014-06-18 | 北京华电蜂鸟科技有限责任公司 | Live line measuring method of high-voltage transmission line suspended ceramic insulator insulating resistor |
| CN105223483A (en) * | 2015-11-02 | 2016-01-06 | 国网山东省电力公司电力科学研究院 | A kind of DC transmission engineering insulator chain defect online detection method and device |
| CN105676090A (en) * | 2016-03-01 | 2016-06-15 | 国网辽宁省电力有限公司丹东供电公司 | Live-line detection zero-value tester for porcelain insulator |
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2001
- 2001-11-06 CN CN 01270277 patent/CN2508253Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320366C (en) * | 2001-11-05 | 2007-06-06 | 北京深浪电子技术有限公司 | Detection method and device for live insulator in high-voltage transmission line |
| CN103869165A (en) * | 2012-12-17 | 2014-06-18 | 北京华电蜂鸟科技有限责任公司 | Live line measuring method of high-voltage transmission line suspended ceramic insulator insulating resistor |
| CN103454560A (en) * | 2013-09-03 | 2013-12-18 | 辽宁工程技术大学 | Pollution flashover monitoring device |
| CN103454560B (en) * | 2013-09-03 | 2017-06-23 | 辽宁工程技术大学 | Pollution flashover monitoring device |
| CN103487731A (en) * | 2013-09-18 | 2014-01-01 | 国家电网公司 | Insulator chain testing device |
| CN103487731B (en) * | 2013-09-18 | 2016-04-20 | 国家电网公司 | A kind of insulator chain test unit |
| CN103630731A (en) * | 2013-12-09 | 2014-03-12 | 广东电网公司电力科学研究院 | Leakage current sampling device and leakage current sampling method |
| CN103743954A (en) * | 2013-12-27 | 2014-04-23 | 北京天诚同创电气有限公司 | Insulation performance detecting device |
| CN105223483A (en) * | 2015-11-02 | 2016-01-06 | 国网山东省电力公司电力科学研究院 | A kind of DC transmission engineering insulator chain defect online detection method and device |
| CN105223483B (en) * | 2015-11-02 | 2017-12-12 | 国网山东省电力公司电力科学研究院 | A kind of DC transmission engineering insulator chain defect online detection method and device |
| CN105676090A (en) * | 2016-03-01 | 2016-06-15 | 国网辽宁省电力有限公司丹东供电公司 | Live-line detection zero-value tester for porcelain insulator |
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Granted publication date: 20020828 Termination date: 20101106 |