CN105467280A - Insulator zero value comprehensive test device - Google Patents
Insulator zero value comprehensive test device Download PDFInfo
- Publication number
- CN105467280A CN105467280A CN201510799399.9A CN201510799399A CN105467280A CN 105467280 A CN105467280 A CN 105467280A CN 201510799399 A CN201510799399 A CN 201510799399A CN 105467280 A CN105467280 A CN 105467280A
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- China
- Prior art keywords
- insulator
- main control
- output terminal
- test device
- control chip
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses an insulator zero value comprehensive test device and belongs to the measuring instrument field. The insulator zero value comprehensive test device comprises an insulation casing, a main control chip arranged in the insulation casing, a high frequency transformation circuit, a sampling resistor circuit, an A/D converter, a liquid crystal display module and a voice broadcast module, wherein an output end of the high frequency transformation circuit is provided with a telescopic contact, a control signal output end of the main control chip is connected with the high frequency transformation circuit, the telescopic contact of the high frequency transformation circuit is connected with an input end of a detected insulator, an output end of the detected insulator is connected with an input end of the main control chip through the sampling resistor circuit, a video audio signal output end of the main control chip is connected with the liquid crystal display module and the voice broadcast module through the A/D converter, and the telescopic contact comprises a telescopic insulation rod and a conductive probe tip connected with an end portion of the telescopic insulation rod. The insulator zero value comprehensive test device is applicable to insulators with various disk diameters, is convenient to use and improves safety and work efficiency in the test process.
Description
Technical field
The invention belongs to surveying instrument field, be specifically related to a kind of insulator null value full test device, be applicable to various dish footpaths insulator.
Background technology
At present, for using pistol type tester, there is following problem in the method for transmission line of electricity porcelain insulator zero, low value test: (1) test result is hand of dial display, numerical result display out of true, can not accurate response insulator resistance; (2) test time to the satisfactory insulator of insulation resistance value without any prompting, when contact and insulator steel cap loose contact, do not record result time, equally without any prompting, easily there is test leakage in instrument; (3) operating personnel need hold tester handle and prevent instrument from dropping, carry inconvenience, need point during test and pull " trigger ", need in insulator chain up conversion position when testing, but existing equipment is unfavorable for realizing limit mobile limit test on insulator chain, there is larger security risk, and for the insulator chain at distance just diverse location place, labor intensity of operating staff is large, wastes time and energy during measurement.
Summary of the invention
Technical matters to be solved by this invention there is provided a kind of applicable difference dish footpath insulator, convenience and high-efficiency, precise and stable insulator null value full test device.
The present invention adopts following technical scheme:
A kind of insulator null value full test device, it comprises insulation crust, the main control chip be arranged in insulation crust, high frequency transforming circuit, sample resistance circuit, A/D converter, LCD MODULE and voice broadcast module; The output terminal of described high-pressure frequency-conversion circuit is provided with telescopic contact; The control signal output terminal access high frequency transforming circuit of described main control chip, described high frequency transforming circuit is connected on the input end of tested insulator through telescopic contact, the input end of the output terminal access sample resistance circuit of described tested insulator, the input end of the output terminal access main control chip of described sample resistance circuit, the video/audio signal output terminal of described main control chip accesses described LCD MODULE and voice broadcast module through A/D converter; The side of described insulation crust is provided with the fixed band of tightness adjustable; Described telescopic contact is made up of telescopic insulating bar and the conductive tips being connected to described telescopic insulating bar end.
Further, described high frequency transforming circuit comprises NPN type triode Q1 ~ Q2, diode D1 ~ D2, electric capacity C1 and high-frequency transformer T1; The control signal output terminal of described main control chip accesses the base stage of NPN type triode Q1 ~ Q2 respectively; The positive pole of described diode D1 connects the emitter of NPN type triode Q1, and its negative pole connects the collector of NPN type triode Q1; The positive pole of described diode D2 connects the emitter of NPN type triode Q2, and its negative pole connects the collector of NPN type triode Q2; The emitter of described NPN type triode Q1 connects the collector of NPN type triode Q2; The primary side of described high-frequency transformer T1 is connected on the two ends of diode D2 through electric capacity C1, the input end of the described tested insulator of secondary side access of described high-frequency transformer T1.
Further, described sample resistance circuit comprises resistance R1 ~ R3 and dual operational amplifier LM358; The output terminal of described tested insulator accesses negative pole and the positive pole of described dual operational amplifier LM358 respectively through resistance R1 and R2, between the negative pole that described resistance R3 is connected in parallel on described dual operational amplifier LM358 and output terminal, the output terminal of described dual operational amplifier LM358 accesses the input end of described A/D converter.
Further, the model of described LCD MODULE is JLX2402A.
Further, the model of described voice broadcast module is WT588D.
Further, described main control chip is PIC16F series monolithic.
The invention has the beneficial effects as follows: the present invention adopts LCD MODULE to show test results, compare pointer display more accurate, stable performance, data redundancy is good; Have prompting to the satisfactory insulator of insulation resistance value during test, namely when contact and insulator steel cap loose contact, do not record result time, the voice broadcast module in the present invention can send alarm, makes it not easily test leakage to occur; Contact in the present invention adopts telescopic design, be applicable to various dish footpaths insulator, not only easy to use without the need to changing contact, and improve testing efficiency, improve the security of test process, promote the work efficiency of insulator zero value detection, further increase the scope of application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the circuit theory diagrams of sample resistance circuit in the present invention
Wherein, 1 main control chip, 2 high frequency transforming circuits, 3 sample resistance circuit, 4A/D converter, 5 LCD MODULE, 6 voice broadcast modules, 7 tested insulators, 8 telescopic contacts.
Embodiment
Below in conjunction with accompanying drawing 1 ~ 2, the invention will be further described.
With reference to Fig. 1 ~ 2: embodiment comprises insulation crust, the main control chip 1 be arranged in insulation crust, high frequency transforming circuit 2, sample resistance circuit 3, A/D converter 4, LCD MODULE 5 and voice broadcast module 6; The output terminal of described high-pressure frequency-conversion circuit 2 is provided with telescopic contact 8; The control signal output terminal access high frequency transforming circuit 2 of described main control chip 1, described high frequency transforming circuit 2 is connected on the input end of tested insulator 7 through telescopic contact 8, the input end of the output terminal access sample resistance circuit 3 of described tested insulator 7, the input end of the output terminal access main control chip 1 of described sample resistance circuit 3, the video/audio signal output terminal of described main control chip 1 accesses described LCD MODULE 5 and voice broadcast module 6 through A/D converter 4; The side of described insulation crust is provided with the fixed band of tightness adjustable; Described telescopic contact 8 is made up of telescopic insulating bar and the conductive tips being connected to described telescopic insulating bar end.
Further, described high frequency transforming circuit 2 comprises NPN type triode Q1 ~ Q2, diode D1 ~ D2, electric capacity C1 and high-frequency transformer T1; The control signal output terminal of described main control chip 1 accesses the base stage of NPN type triode Q1 ~ Q2 respectively; The positive pole of described diode D1 connects the emitter of NPN type triode Q1, and its negative pole connects the collector of NPN type triode Q1; The positive pole of described diode D2 connects the emitter of NPN type triode Q2, and its negative pole connects the collector of NPN type triode Q2; The emitter of described NPN type triode Q1 connects the collector of NPN type triode Q2; The primary side of described high-frequency transformer T1 is connected on the two ends of diode D2 through electric capacity C1, the input end of the described tested insulator 7 of secondary side access of described high-frequency transformer T1.
Further, described sample resistance circuit 3 comprises resistance R1 ~ R3 and dual operational amplifier LM358; The output terminal of described tested insulator 7 accesses negative pole and the positive pole of described dual operational amplifier LM358 respectively through resistance R1 and R2, between the negative pole that described resistance R3 is connected in parallel on described dual operational amplifier LM358 and output terminal, the output terminal of described dual operational amplifier LM358 accesses the input end of described A/D converter 4.
Further, the model of described LCD MODULE 5 is JLX2402A.
Further, the model of described voice broadcast module 6 is WT588D.
Further, described main control chip 1 is PIC16F series monolithic.
The course of work of the present embodiment is as follows:
This voice digital display insulator null detection instrument adopts MS PIC16F series monolithic as main control chip 1, produce pwm pulse signal, control high frequency transforming circuit 2 produces 5000V high pressure and is loaded on the tested insulator 7 of test block by telescopic contact 8, voltage, current sampling is realized by sample resistance circuit 3, test block resistance is calculated through main control chip 1, by outputting to LCD MODULE 5 and voice broadcast module 6 after A/D converter 4, carry out numerical value display and voice broadcast.The appearance design of voice numerical value insulator null detection instrument is exquisite, easy and simple to handle, and when using this device, operating personnel only need to move less position and need not lean out whole health and just can realize insulator zero value detection, improve the security of test process.During use, the fixed band of the tightness adjustable of the side of insulation crust need be enclosed within hand by operating personnel, only need to open tester switch, button press triggering tester state to be tested can start test job, and this telescopic contact has the on-deformable feature of thing of boldly confronting a powerful opponent, and has the feature being generally applicable to different electric pressure, different model insulator by mistake.
When using voice digital display insulator null detection instrument to test, insulator resistance can show in LCDs in real time, when resistance reaches the 500M Ω of regulatory requirements, and voice broadcast " good ", when resistance is lower than 500M Ω, voice broadcast numerical value.
The above embodiment is only the preferred embodiments of the present invention, and and the feasible enforcement of non-invention exhaustive.For persons skilled in the art, to any apparent change done by it under the prerequisite not deviating from the principle of the invention and spirit, all should be contemplated as falling with within claims of the present invention.
Claims (7)
1. an insulator null value full test device, is characterized in that: it comprises insulation crust, the main control chip (1) be arranged in insulation crust, high frequency transforming circuit (2), sample resistance circuit (3), A/D converter (4), LCD MODULE (5) and voice broadcast module (6); The output terminal of described high-pressure frequency-conversion circuit (2) is provided with telescopic contact (8); Control signal output terminal access high frequency transforming circuit (2) of described main control chip (1), described high frequency transforming circuit (2) is connected on the input end of tested insulator (7) through telescopic contact (8), the input end of output terminal access sample resistance circuit (3) of described tested insulator (7), the input end of output terminal access main control chip (1) of described sample resistance circuit (3), the video/audio signal output terminal of described main control chip (1) accesses described LCD MODULE (5) and voice broadcast module (6) through A/D converter (4); Described telescopic contact (8) is made up of telescopic insulating bar and the conductive tips being connected to described telescopic insulating bar end.
2. a kind of insulator null value full test device according to claim 1, is characterized in that: described high frequency transforming circuit (2) comprises NPN type triode Q1 ~ Q2, diode D1 ~ D2, electric capacity C1 and high-frequency transformer T1; The control signal output terminal of described main control chip (1) accesses the base stage of NPN type triode Q1 ~ Q2 respectively; The positive pole of described diode D1 connects the emitter of NPN type triode Q1, and its negative pole connects the collector of NPN type triode Q1; The positive pole of described diode D2 connects the emitter of NPN type triode Q2, and its negative pole connects the collector of NPN type triode Q2; The emitter of described NPN type triode Q1 connects the collector of NPN type triode Q2; The primary side of described high-frequency transformer T1 is connected on the two ends of diode D2 through electric capacity C1, the input end of the described tested insulator (7) of secondary side access of described high-frequency transformer T1.
3. a kind of insulator null value full test device according to any one of claim 1 or 2, is characterized in that: described sample resistance circuit (3) comprises resistance R1 ~ R3 and dual operational amplifier LM358; The output terminal of described tested insulator (7) accesses negative pole and the positive pole of described dual operational amplifier LM358 respectively through resistance R1 and R2, between the negative pole that described resistance R3 is connected in parallel on described dual operational amplifier LM358 and output terminal, the output terminal of described dual operational amplifier LM358 accesses the input end of described A/D converter (4).
4. a kind of insulator null value full test device according to claim 1, is characterized in that: the model of described LCD MODULE (5) is JLX2402A.
5. a kind of insulator null value full test device according to claim 1, is characterized in that: the model of described voice broadcast module (6) is WT588D.
6. a kind of insulator null value full test device according to claim 1, is characterized in that: described main control chip (1) is PIC16F series monolithic.
7. a kind of insulator null value full test device according to claim 1, is characterized in that: the side of described insulation crust is provided with the fixed band of tightness adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799399.9A CN105467280A (en) | 2015-11-18 | 2015-11-18 | Insulator zero value comprehensive test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799399.9A CN105467280A (en) | 2015-11-18 | 2015-11-18 | Insulator zero value comprehensive test device |
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| Publication Number | Publication Date |
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| CN105467280A true CN105467280A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510799399.9A Pending CN105467280A (en) | 2015-11-18 | 2015-11-18 | Insulator zero value comprehensive test device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936612A (en) * | 2006-10-19 | 2007-03-28 | 何速 | Method for remote measuring high-voltage insulator zero-value by laser |
| CN101706531A (en) * | 2009-11-10 | 2010-05-12 | 李景禄 | Method for testing insulation performance of insulator and device thereof |
| CN201628747U (en) * | 2010-03-26 | 2010-11-10 | 福建省电力有限公司厦门电业局 | On-line detection device for insulation resistance of suspension insulator |
| CN202018491U (en) * | 2010-12-23 | 2011-10-26 | 保定供电公司 | Tool for testing zero value of insulator chain |
| CN205427117U (en) * | 2015-11-18 | 2016-08-03 | 国家电网公司 | Comprehensive testing arrangement of insulator null value |
-
2015
- 2015-11-18 CN CN201510799399.9A patent/CN105467280A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936612A (en) * | 2006-10-19 | 2007-03-28 | 何速 | Method for remote measuring high-voltage insulator zero-value by laser |
| CN101706531A (en) * | 2009-11-10 | 2010-05-12 | 李景禄 | Method for testing insulation performance of insulator and device thereof |
| CN201628747U (en) * | 2010-03-26 | 2010-11-10 | 福建省电力有限公司厦门电业局 | On-line detection device for insulation resistance of suspension insulator |
| CN202018491U (en) * | 2010-12-23 | 2011-10-26 | 保定供电公司 | Tool for testing zero value of insulator chain |
| CN205427117U (en) * | 2015-11-18 | 2016-08-03 | 国家电网公司 | Comprehensive testing arrangement of insulator null value |
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Application publication date: 20160406 |
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