CN105891688A - Insulator detection device - Google Patents
Insulator detection device Download PDFInfo
- Publication number
- CN105891688A CN105891688A CN201610225392.0A CN201610225392A CN105891688A CN 105891688 A CN105891688 A CN 105891688A CN 201610225392 A CN201610225392 A CN 201610225392A CN 105891688 A CN105891688 A CN 105891688A
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- China
- Prior art keywords
- module
- pass filtering
- filtering precision
- mcu
- peak value
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Classifications
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses an insulator detection device belonging to the detection technology field, especially relates to improvement of an insulator detection device. The invention provides the insulator detection device having high accuracy. The insulator detection device comprises a high voltage divider, a current sampling circuit, a multipath simulation switch, a low pass filtering precision rectification module, a high pass filtering precision rectification peak value sampling module, a voltage amplification module, a MCU, a wireless communication module, and a power supply module. The high voltage divider and the current sampling circuit are respectively connected with the multipath simulation switch by voltage following modules. The multipath simulation switch is connected with the low pass filtering precision rectification module and the high pass filtering precision rectification peak value sampling module. The low pass filtering precision rectification module and the high pass filtering precision rectification peak value sampling module are connected with the MCU signal input end, and the MCU signal output port is connected with the wireless communication module. The power supply module is used for supplying the voltage following module, the multipath simulation switch, the low pass filtering precision rectification module, the high pass filtering precision rectification peak value sampling module, the MCU, and the wireless communication module with the power.
Description
Technical field
The invention belongs to detection technique field, especially relate to the improvement of a kind of insulator detector.
Background technology
High-voltage transmission line insulator be in power system range extensively, the important primary equipment of substantial amounts, During Process of Long-term Operation is affected mouth by factors such as electric field, mechanical force and site environments, insulator will necessarily deteriorate and produce faulty insulator.Porcelain insulator, as traditional insulation component, runs the time long, so insulator deterioration rate is the highest in transmission line of electricity.Inferior insulator, particularly faulty insulator will bring hidden danger to the safe and reliable operation of electrical network as not being detected in time, once cause the faults such as transmission line of electricity is short-circuit, go offline, the properly functioning of electrical network will be had a strong impact on, bring huge economic loss and social influence.Therefore detect that the faulty insulator in hanging net operation insulator chain is the most necessary in time.At present, domestic commonly use short-circuit fork or spark gap detection method detection faulty insulator, because of its can not the spread voltage of detection by quantitative insulator and cause the situation of a lot of missing inspection, flase drop.
Summary of the invention
The present invention is aiming at the problems referred to above, it is provided that the insulator detector that a kind of accuracy rate is high.
For realizing the above-mentioned purpose of the present invention, the present invention adopts the following technical scheme that, insulator detector, including high-voltage bleeder, current sampling circuit, multiway analog switch, low-pass filtering precision rectifying module, high-pass filtering precision rectifying peak value sampling module, voltage amplification module, MCU, wireless communication module and power module, it is characterized in that: high-voltage bleeder and current sampling circuit connect multiway analog switch by voltage follow module respectively, multiway analog switch connects low-pass filtering precision rectifying module and high-pass filtering precision rectifying peak value sampling module；Low-pass filtering precision rectifying module and high-pass filtering precision rectifying peak value sampling module connect MCU signal input part, MCU signal output port connects wireless communication module, and power module is voltage follow module, multiway analog switch, low-pass filtering precision rectifying module, high-pass filtering precision rectifying peak value sampling module MCU and wireless communication module power supply.
As a kind of preferred version, connect MCU signal input part in low-pass filtering precision rectifying module by voltage amplifier circuit.
As another kind of preferred version, described MCU uses C8051F330 low-power consumption MCU.
Beneficial effects of the present invention.
Detector of the present invention can solve seal member and break away from the inconvenience of traditional detection method, can realize the online batch detection of industry spot seal member, has the advantage that automatic alarm, self diagnosis and measuring accuracy are high, test period is short.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram.
Detailed description of the invention
As shown in Figure 1, insulator detector, including high-voltage bleeder, current sampling circuit, multiway analog switch, low-pass filtering precision rectifying module, high-pass filtering precision rectifying peak value sampling module, voltage amplification module, MCU, wireless communication module and power module, it is characterized in that: high-voltage bleeder and current sampling circuit connect multiway analog switch by voltage follow module respectively, multiway analog switch connects low-pass filtering precision rectifying module and high-pass filtering precision rectifying peak value sampling module；Low-pass filtering precision rectifying module and high-pass filtering precision rectifying peak value sampling module connect MCU signal input part, MCU signal output port connects wireless communication module, and power module is voltage follow module, multiway analog switch, low-pass filtering precision rectifying module, high-pass filtering precision rectifying peak value sampling module MCU and wireless communication module power supply.
As a kind of preferred version, connect MCU signal input part in low-pass filtering precision rectifying module by voltage amplifier circuit.
As another kind of preferred version, described MCU uses C8051F330 low-power consumption MCU.
Voltage and current signal is after sensor samples, the A/D converter of MCU is sent into after signal condition, the final signal measured is insulator power frequency spread voltage, power frequency leakage current and corona pulse electric current, so modulate circuit is divided into low channel and hf channel.Voltage signal and leakage current signal share low channel, and it includes voltage follow, low-pass filtering and precise rectification circuit.Voltage follow is to improve input resistance, reducing output resistance, plays isolation and improves the effect of carrying load ability；Precise rectification circuit is to be overturn by the signal of negative half period as just, it is ensured that A/D converter normal sample.Hf channel filters off power frequency component first by High frequency filter, and Partial discharge signal is much smaller relative to corona pulse electric current, can naturally be filtered off by sample magnitude threshold.So filtered signal catches peak value of pulse with peak holding circuit after precision rectifying, then power frequency period being divided into 100 time periods, segmentation measures the maximum impulse amplitude in each time period and analyzes the regularity of distribution of corona pulse with these data.The sampling of high and low messenger, is automatically controlled analog switch and the realization of modulate circuit power supply as desired by measuring command by MCU.And transmitted to master controller by wireless communication module.
The foregoing is only the preferred embodiments of the present invention mode, it is impossible to limit the scope of protection of the invention with this, change and the replacement of any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to scope of the present invention.
Claims (3)
1. insulator detector, including high-voltage bleeder, current sampling circuit, multiway analog switch, low-pass filtering precision rectifying module, high-pass filtering precision rectifying peak value sampling module, voltage amplification module, MCU, wireless communication module and power module, it is characterized in that: high-voltage bleeder and current sampling circuit connect multiway analog switch by voltage follow module respectively, multiway analog switch connects low-pass filtering precision rectifying module and high-pass filtering precision rectifying peak value sampling module；Low-pass filtering precision rectifying module and high-pass filtering precision rectifying peak value sampling module connect MCU signal input part, MCU signal output port connects wireless communication module, and power module is voltage follow module, multiway analog switch, low-pass filtering precision rectifying module, high-pass filtering precision rectifying peak value sampling module MCU and wireless communication module power supply.
Insulator detector the most according to claim 1, it is characterised in that: connect MCU signal input part in low-pass filtering precision rectifying module by voltage amplifier circuit.
Insulator detector the most according to claim 1, it is characterised in that: described MCU uses C8051F330 low-power consumption MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610225392.0A CN105891688A (en) | 2016-04-12 | 2016-04-12 | Insulator detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610225392.0A CN105891688A (en) | 2016-04-12 | 2016-04-12 | Insulator detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105891688A true CN105891688A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610225392.0A Pending CN105891688A (en) | 2016-04-12 | 2016-04-12 | Insulator detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105891688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004869A (en) * | 2017-12-25 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | A kind of no belt current operational amplifier FOC electric machine control system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202720299U (en) * | 2012-05-29 | 2013-02-06 | 北京交通大学 | Insulator leakage current on-line monitoring system |
| CN202794410U (en) * | 2012-07-11 | 2013-03-13 | 成都措普科技有限公司 | Monitoring system for leakage current of insulator |
| US20130179099A1 (en) * | 2012-01-08 | 2013-07-11 | Metrycom Communications Ltd. | System and method for assessing faulty power-line insulator strings |
| CN103823165A (en) * | 2014-02-26 | 2014-05-28 | 国家电网公司 | Insulator pollution flashover pre-warning method and system based on leakage currents |
| CN205539339U (en) * | 2016-04-12 | 2016-08-31 | 苏州寅泽缕弦电子技术有限公司 | Insulator detector |
-
2016
- 2016-04-12 CN CN201610225392.0A patent/CN105891688A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130179099A1 (en) * | 2012-01-08 | 2013-07-11 | Metrycom Communications Ltd. | System and method for assessing faulty power-line insulator strings |
| CN202720299U (en) * | 2012-05-29 | 2013-02-06 | 北京交通大学 | Insulator leakage current on-line monitoring system |
| CN202794410U (en) * | 2012-07-11 | 2013-03-13 | 成都措普科技有限公司 | Monitoring system for leakage current of insulator |
| CN103823165A (en) * | 2014-02-26 | 2014-05-28 | 国家电网公司 | Insulator pollution flashover pre-warning method and system based on leakage currents |
| CN205539339U (en) * | 2016-04-12 | 2016-08-31 | 苏州寅泽缕弦电子技术有限公司 | Insulator detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004869A (en) * | 2017-12-25 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | A kind of no belt current operational amplifier FOC electric machine control system and method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |