CN105334437A - Portable insulator zero-value overhead testing device - Google Patents
Portable insulator zero-value overhead testing device Download PDFInfo
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- CN105334437A CN105334437A CN201510796207.9A CN201510796207A CN105334437A CN 105334437 A CN105334437 A CN 105334437A CN 201510796207 A CN201510796207 A CN 201510796207A CN 105334437 A CN105334437 A CN 105334437A
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- type triode
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Abstract
The invention discloses a portable insulator zero-value overhead testing device, and belongs to the field of electrical equipment measurement. The device comprises an insulation shell, as well as a master control chip, a high frequency transformation circuit, a sampling resistance circuit, an A/D converter, a liquid crystal display module and a voice broadcasting module which are arranged in the insulation shell, wherein the control signal output end of the master control chip is connected into the input end of a detected insulator via the high frequency transformation circuit, and the output end of the detected insulator is connected into the input end of the sampling resistance circuit; the output end of the sampling resistance circuit is connected into the input end of the master control chip; the video-audio signal output end of the master control chip is connected into the liquid crystal display module and the voice broadcasting module via the A/D converter; and a tightness-adjustable fixing band is arranged on one side of the insulation shell. The device can be used for testing while moving, and is convenient and safe to operate.
Description
Technical field
The invention belongs to electrical equipment fields of measurement, be specifically related to a kind of Portable insulation null value high-altitude proving installation.
Background technology
Substation Insulator zero value detection is the major way of test insulator dielectric performance, is one of the project that must do of routine inspection.The insulator zero value detection instrument of existing widespread use, the insulation resistance meter comprising insulator null detection bar and be electrically connected with it, test apparatus entirety is complicated and volume is relatively huge, one holding rod on the other hand operating instrument increases the operation easier of testing inspection personnel especially, particularly in the process of work high above the ground, badly influence the security of test surveying work.Operating personnel need to hold tester handle in the measurements and prevent instrument from dropping, and it is very inconvenient to carry, and need point and pull " trigger " during test, can not realize moving limit test in insulator chain top, cause the problem that labor intensity of operating staff is large, security risk is large.
Summary of the invention
The Portable insulation null value high-altitude proving installation that technical matters to be solved by this invention there is provided a kind of handling safety, easy to carry, measuring accuracy is high, measurement range is wide.
The present invention adopts following technical scheme:
A kind of Portable insulation null value high-altitude proving installation, 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 control signal output terminal of described main control chip accesses the input end of tested insulator through high frequency transforming circuit, 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.
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 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 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 4.
Further, described main control chip is PIC16F series monolithic.
Further, the model of described LCD MODULE is JLX2402A.
Further, the model of described voice broadcast module is WT588D.
The invention has the beneficial effects as follows: the present invention adopts LCD MODULE to show test results, can be accurate to 0.01kV, and impedance is high, the impact for measured system is little, stable performance, and data redundancy is good; Measurement range is wide, and range can reach 0 ~ 40kV; 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.The present invention is provided with the fixed band of tightness adjustable, and operating personnel are enclosed within hand and after tightening up, hand-free, reaches and moves while the object of testing, make operation more convenient, safer.
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.
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 control signal output terminal of described main control chip 1 accesses the input end of tested insulator 7 through high frequency transforming circuit 2, 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.
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, described in.Between the negative pole that 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, described main control chip 1 is PIC16F series monolithic.
Further, the model of described LCD MODULE 5 is JLX2402A.
Further, the model of described voice broadcast module 6 is WT588D.
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, 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, 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.
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 (6)
1. a Portable insulation null value high-altitude proving installation, 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 control signal output terminal of described main control chip (1) accesses the input end of tested insulator (7) through high frequency transforming circuit (2), 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); The side of described insulation crust is provided with the fixed band of tightness adjustable.
2. the sub-null value high-altitude of a kind of Portable insulation according to claim 1 proving installation, 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 Portable insulation null value high-altitude proving installation 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. the sub-null value high-altitude of a kind of Portable insulation according to claim 1 proving installation, is characterized in that: described main control chip (1) is PIC16F series monolithic.
5. the sub-null value high-altitude of a kind of Portable insulation according to claim 1 proving installation, is characterized in that: the model of described LCD MODULE (5) is JLX2402A.
6. the sub-null value high-altitude of a kind of Portable insulation according to claim 1 proving installation, is characterized in that: the model of described voice broadcast module (6) is WT588D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796207.9A CN105334437A (en) | 2015-11-18 | 2015-11-18 | Portable insulator zero-value overhead testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796207.9A CN105334437A (en) | 2015-11-18 | 2015-11-18 | Portable insulator zero-value overhead testing device |
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| CN105334437A true CN105334437A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510796207.9A Pending CN105334437A (en) | 2015-11-18 | 2015-11-18 | Portable insulator zero-value overhead testing 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 |
| CN204758767U (en) * | 2015-08-07 | 2015-11-11 | 国家电网公司 | Suspension insulator's ac voltage withstand test testing system |
| CN205280882U (en) * | 2015-11-18 | 2016-06-01 | 国家电网公司 | Portable insulator null value high altitude testing arrangement |
-
2015
- 2015-11-18 CN CN201510796207.9A patent/CN105334437A/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 |
| CN204758767U (en) * | 2015-08-07 | 2015-11-11 | 国家电网公司 | Suspension insulator's ac voltage withstand test testing system |
| CN205280882U (en) * | 2015-11-18 | 2016-06-01 | 国家电网公司 | Portable insulator null value high altitude testing arrangement |
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Application publication date: 20160217 |
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