CN205539339U - Insulator detector - Google Patents
Insulator detector Download PDFInfo
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- CN205539339U CN205539339U CN201620302948.7U CN201620302948U CN205539339U CN 205539339 U CN205539339 U CN 205539339U CN 201620302948 U CN201620302948 U CN 201620302948U CN 205539339 U CN205539339 U CN 205539339U
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Abstract
Insulator detector belongs to detection technical field, especially relates to a insulator detector's improvement. The utility model provides an insulator detector that the rate of accuracy is high. Insulator detector, including high -voltage bleeder, current sampling circuit, multichannel analog switch, the accurate rectifier module of low pass filter, the accurate rectification peak value sampling module of high -pass filtering, voltage amplification module, MCU, wireless communication module and power module, high -voltage bleeder and current sampling circuit follow the module through voltage respectively and connect multichannel analog switch, and multichannel analog switch connects accurate rectifier module of low pass filter and the accurate rectification peak value sampling module of high -pass filtering, MCU signal input part is connected to the accurate rectification peak value sampling module of accurate rectifier module of low pass filter and high -pass filtering, and wireless communication module is connected to the MCU signal output part mouth, and power module follows module, multichannel analog switch, the accurate rectifier module of low pass filter, the accurate rectification peak value sampling module MCU of high -pass filtering and wireless communication module power supply for voltage.
Description
Technical field
This utility model belongs to detection technique field, especially relates 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
This utility model 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 above-mentioned purpose of the present utility model, this utility model 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.
The beneficial effects of the utility model.
This utility model detector 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 this utility model theory 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 preferred embodiment mode of the present utility model; the scope that can not limit this utility model protection with this, the change of any unsubstantiality that those skilled in the art is done on the basis of this utility model and replacement belong to this utility model scope required for protection.
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 |
|---|---|---|---|
| CN201620302948.7U CN205539339U (en) | 2016-04-12 | 2016-04-12 | Insulator detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620302948.7U CN205539339U (en) | 2016-04-12 | 2016-04-12 | Insulator detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205539339U true CN205539339U (en) | 2016-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620302948.7U Expired - Fee Related CN205539339U (en) | 2016-04-12 | 2016-04-12 | Insulator detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205539339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891688A (en) * | 2016-04-12 | 2016-08-24 | 苏州寅泽缕弦电子技术有限公司 | Insulator detection device |
-
2016
- 2016-04-12 CN CN201620302948.7U patent/CN205539339U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891688A (en) * | 2016-04-12 | 2016-08-24 | 苏州寅泽缕弦电子技术有限公司 | Insulator detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170412 |