CN105353257A - High voltage device fault early warning device and control method - Google Patents
High voltage device fault early warning device and control method Download PDFInfo
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- CN105353257A CN105353257A CN201510869358.2A CN201510869358A CN105353257A CN 105353257 A CN105353257 A CN 105353257A CN 201510869358 A CN201510869358 A CN 201510869358A CN 105353257 A CN105353257 A CN 105353257A
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Abstract
The invention discloses a high voltage device fault early warning device and a control method. The high voltage device comprises a main control module, a micro current sensor, an amplification filtering circuit, an indication circuit, an under-voltage monitoring circuit and a power supply module; the micro current sensor is used for detecting the magnitude of leakage current on a ground down lead; a signal output terminal of the micro current sensor is connected to the input terminal of a main control module through the amplification filtering circuit; the signal output terminal of the main control module is connected to an indication circuit; the under-voltage monitoring circuit is connected to the power supply module and the main control unit for monitoring voltage of the power supply module and emitting the under-voltage signal through the main control module; and the power supply module supplies power to all circuits. The leakage early warning device and the control method can promptly reflect the working state of the high voltage device (outage,electrification and faulted), and can various prompts like sound, light, air node, etc.
Description
Technical field
The present invention relates to a kind of high-tension apparatus fault pre-alarming device and control method thereof, belong to electrical equipment online monitoring, electronic technology and lightning protection relevant art.
Background technology
Along with the maturation of capacitive apparatus on-line monitoring technique is with stable, its periphery function obtains sufficient excavation, primary equipment is (as sleeve of main transformer, master iron core, lightning arrester etc.) downlead leakage current values can reflect the operation conditions of this high-tension apparatus itself: comprise normal operating conditions and " in spite of illness " duty, normal operating conditions has power down mode and live line work state, high-tension apparatus downlead leakage current values has certain term of reference, when departing from this scope and reach certain ratio, often imply that this device interior may have hidden danger must cause our concern, need out of service if desired.
In view of this, the present inventor studies this, and develop a kind of high-tension apparatus fault pre-alarming device and control method thereof specially, this case produces thus.
Summary of the invention
The object of this invention is to provide a kind of high-tension apparatus fault pre-alarming device and control method thereof, the duty of high-tension apparatus can be reflected in time, and export the multiple promptings such as sound, light, empty node.
To achieve these goals, solution of the present invention is:
A kind of high-tension apparatus fault pre-alarming device, comprise main control module, low current sensor, filtering and amplifying circuit, indicating circuit, under-voltage observation circuit and power module, wherein, described low current sensor is arranged on high-tension apparatus leakage current down conductor, for detecting the leakage current on down conductor, the signal output part of low current sensor is connected with main control module signal input part by filtering and amplifying circuit, the signal output part of described main control module is connected with indicating circuit, under-voltage observation circuit respectively with power module, main control unit is connected, for monitoring power module voltage, and send under-voltage signal by main control module, described power module is respectively each circuit and powers.
As preferably, described main control unit adopts Microprocessor S3C44B0X, specifically adopts model to be the microprocessor of STM32F103R8.
As preferably, described low current sensor adopts XL-1 series based on the low current sensor of ultracrystallite.
As preferably, described filtering and amplifying circuit comprises interconnective operational amplifier and amplification chip, for sending to main control unit by after the output signal amplification filtering of low current sensor.
As preferably, described operational amplifier adopts model to be the operational amplifier of AD8657, and described amplification chip adopts model to be the Micro Energy Lose instrument amplifier of AD627.
As preferably, described indicating circuit comprises hummer and LED light.
As preferably, described under-voltage observation circuit comprises the resistance that operational amplifier is connected with operational amplifier, for detecting the voltage of power module.
As preferably, described power module adopts powered battery, for each circuit in high-tension apparatus fault pre-alarming device provides corresponding voltage.
The control method of above-mentioned high-tension apparatus fault pre-alarming device, comprises the steps:
1) fault pre-alarming device switches on power, the every program of main control module initialization, and whether self-checking unit is working properly, if self-inspection is normal, then performs lower sequence step, if self-inspection is abnormal, then reinitializes;
2) low current sensor detects the leakage current on high-tension apparatus leakage current down conductor in real time, and the leakage current signal detected is sent to filtering and amplifying circuit;
3) filtering and amplifying circuit passes through leakage current signal and amplifies, main control module is input to after filtering process, main control module is analyzed leakage current signal, judge, when detecting that circuit or high-tension apparatus are without electricity, " power failure " state LED light that then indicating circuit is corresponding lights, when detecting that circuit or high-tension apparatus have electricity, " charged " state LED light that then indicating circuit is corresponding lights, when detecting that leakage current value is greater than setting threshold values, alerting signal is sent by indicating circuit hummer, open corresponding " in spite of illness " state LED light simultaneously, prompting staff carries out respective handling,
4) under-voltage observation circuit detects the cell voltage of power module in real time, and when lower than setting value, main control module starts corresponding under-voltage pilot lamp.
By leakage pre-alarm device of the present invention and control method thereof, the duty (" power failure ", " charged ", " in spite of illness " running status) of high-tension apparatus can be reflected in time, and export the multiple promptings such as sound, light, empty node, check, register to various error-proof device interface and on-the-spot tour personnel, note abnormalities and notify that related personnel processes in time, avoid jeopardizing substation equipment security of operation, whole apparatus structure is succinct, easy to operate and cost is low.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the high-tension apparatus fault pre-alarming principle of device block diagram of the present embodiment;
Fig. 2 is the main control module microcontroller circuit schematic diagram of the present embodiment;
Fig. 3 is the filtering and amplifying circuit schematic diagram of the present embodiment;
Fig. 4 is the indicating circuit partial circuit schematic diagram of the present embodiment.
Embodiment
As shown in Figure 1, a kind of high-tension apparatus fault pre-alarming device, comprise main control module 1, low current sensor 2, filtering and amplifying circuit 3, indicating circuit 5, under-voltage observation circuit 6, and the power module 4 of to power for each circuit, wherein, described low current sensor 2 is arranged on high-tension apparatus 7 leakage current down conductor, for detecting the leakage current on down conductor, the signal output part of low current sensor 2 is connected with main control module 1 signal input part by filtering and amplifying circuit 3, the signal output part of described main control module 1 is connected with indicating circuit 5, under-voltage observation circuit 6 respectively with power module 4, main control unit 1 is connected, for monitoring power module 4 voltage, and send under-voltage signal by main control module 1.
In the present embodiment, described main control unit 1 adopts Microprocessor S3C44B0X, and as shown in Figure 2, concrete employing model is the microprocessor of STM32F103R8.Described low current sensor 2 specifically can adopt XL-1 series based on the low current sensor of ultracrystallite.
As shown in Figure 3, described filtering and amplifying circuit 3 comprises interconnective operational amplifier, amplification chip, resistance and electric capacity etc., for sending to microprocessor by after the output signal amplification filtering of low current sensor 2.Described operational amplifier adopts model to be the operational amplifier of AD8657, and described amplification chip employing model is the Micro Energy Lose instrument amplifier of AD627.
As shown in Figure 4, described indicating circuit 5 comprises hummer and LED light, and in the present embodiment, indicating circuit comprises 9 LED light, represents different duties respectively.
Described power module 4 adopts powered battery, for each circuit in high-tension apparatus fault pre-alarming device provides corresponding voltage.Described under-voltage observation circuit 6 adopts conventional line under-voltage detection module, comprises the resistance etc. that operational amplifier is connected with operational amplifier, for detecting the voltage of power module.
The control method of above-mentioned high-tension apparatus fault pre-alarming device, comprises the steps:
1) fault pre-alarming device switches on power, the every program of main control module 1 initialization, and whether self-checking unit is working properly, if self-inspection is normal, then performs lower sequence step, if self-inspection is abnormal, then reinitializes;
2) low current sensor 2 detects the leakage current on high-tension apparatus 7 leakage current down conductor in real time, and the leakage current signal detected is sent to filtering and amplifying circuit 3;
3) filtering and amplifying circuit 3 pairs of leakage current signals are through amplifying, main control module 1 is input to after filtering process, main control module 1 pair of leakage current signal is analyzed, judge, when detecting that circuit or high-tension apparatus 7 are without electricity, then " power failure " state LED light of indicating circuit 5 correspondence lights, when detecting that circuit or high-tension apparatus 7 have electricity, then " charged " state LED light of indicating circuit 5 correspondence lights, when detecting that leakage current value is greater than setting threshold values, alerting signal is sent by indicating circuit hummer, open corresponding " in spite of illness " state LED light simultaneously, prompting staff carries out respective handling,
4) under-voltage observation circuit 6 detects the cell voltage of power module 4 in real time, when lower than setting value, starts corresponding under-voltage pilot lamp.
By the leakage pre-alarm device described in the present embodiment and control method thereof, the duty (" power failure ", " charged ", " in spite of illness " running status) of high-tension apparatus can be reflected in time, and export the multiple promptings such as sound, light, empty node, check, register to various error-proof device interface and on-the-spot tour personnel, note abnormalities and notify that related personnel processes in time, avoid jeopardizing substation equipment security of operation, whole apparatus structure is succinct, easy to operate and cost is low.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (9)
1. a high-tension apparatus fault pre-alarming device, it is characterized in that: comprise main control module, low current sensor, filtering and amplifying circuit, indicating circuit, under-voltage observation circuit and power module, wherein, described low current sensor is arranged on high-tension apparatus leakage current down conductor, for detecting the leakage current on down conductor, the signal output part of low current sensor is connected with main control module signal input part by filtering and amplifying circuit, the signal output part of described main control module is connected with indicating circuit, under-voltage observation circuit respectively with power module, main control unit is connected, for monitoring power module voltage, and send under-voltage signal by main control module, described power module is respectively each circuit and powers.
2. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 1, is characterized in that: described main control unit adopts Microprocessor S3C44B0X.
3. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 2, is characterized in that: described microprocessor adopts model to be the microprocessor of STM32F103R8.
4. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 1, it is characterized in that: described filtering and amplifying circuit comprises interconnective operational amplifier, amplification chip, resistance and electric capacity, for sending to main control unit by after the output signal amplification filtering of low current sensor.
5. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 4, is characterized in that: described operational amplifier adopts model to be the operational amplifier of AD8657, and described amplification chip employing model is the Micro Energy Lose instrument amplifier of AD627.
6. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 1, is characterized in that: described indicating circuit comprises hummer and LED light.
7. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 1, is characterized in that: described under-voltage observation circuit comprises the resistance that operational amplifier is connected with operational amplifier, for detecting the voltage of power module.
8. a kind of high-tension apparatus fault pre-alarming device as claimed in claim 1, is characterized in that: described power module adopts powered battery, for each circuit in high-tension apparatus fault pre-alarming device provides corresponding voltage.
9. a control method for high-tension apparatus fault pre-alarming device, is characterized in that comprising the steps:
Step 1), fault pre-alarming device switch on power, the every program of main control module initialization, and whether self-checking unit is working properly, if self-inspection is normal, then performs lower sequence step, if self-inspection is abnormal, then reinitialize;
Step 2), low current sensor detects leakage current on high-tension apparatus leakage current down conductor in real time, and the leakage current signal detected sent to filtering and amplifying circuit;
Step 3), filtering and amplifying circuit passes through leakage current signal and amplifies, main control module is input to after filtering process, main control module is analyzed leakage current signal, judge, when detecting that circuit or high-tension apparatus are without electricity, " power failure " state LED light that then indicating circuit is corresponding lights, when detecting that circuit or high-tension apparatus have electricity, " charged " state LED light that then indicating circuit is corresponding lights, when detecting that leakage current value is greater than setting threshold values, alerting signal is sent by indicating circuit hummer, open corresponding " in spite of illness " state LED light simultaneously, prompting staff carries out respective handling,
Step 4), under-voltage observation circuit detect the cell voltage of power module in real time, and when lower than setting value, main control module starts corresponding under-voltage pilot lamp.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510869358.2A CN105353257A (en) | 2015-12-02 | 2015-12-02 | High voltage device fault early warning device and control method |
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| CN201510869358.2A CN105353257A (en) | 2015-12-02 | 2015-12-02 | High voltage device fault early warning device and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459198A (en) * | 2017-11-29 | 2018-08-28 | 国网浙江省电力公司绍兴供电公司 | A kind of portable earth strap telegram alarm device |
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| JPS60147657A (en) * | 1984-01-12 | 1985-08-03 | Toshiba Corp | Method for measuring leak current of arrester |
| CN2594803Y (en) * | 2002-12-11 | 2003-12-24 | 武汉恒安电气有限责任公司 | Extending board tray for testing electric circuit boards |
| CN101178838A (en) * | 2006-11-07 | 2008-05-14 | 西安神电电器有限公司 | Lightning arrestor on-line monitoring methods thereof system |
| CN101408594A (en) * | 2008-09-04 | 2009-04-15 | 温州市科星电子有限公司 | Device suitable for monitoring direct-current power supply ripple coefficient |
| CN201622316U (en) * | 2010-03-26 | 2010-11-03 | 哈尔滨国力电气有限公司 | Capacitive equipment current-leaking measuring device |
| CN102375129A (en) * | 2010-08-17 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Power supply testing circuit |
| CN203551650U (en) * | 2013-10-26 | 2014-04-16 | 云南电网公司楚雄供电局 | Circuit porcelain insulator string leakage current state indicating device |
| CN205229337U (en) * | 2015-12-02 | 2016-05-11 | 国网浙江省电力公司绍兴供电公司 | High -tension apparatus trouble early warning device |
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2015
- 2015-12-02 CN CN201510869358.2A patent/CN105353257A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147657A (en) * | 1984-01-12 | 1985-08-03 | Toshiba Corp | Method for measuring leak current of arrester |
| CN2594803Y (en) * | 2002-12-11 | 2003-12-24 | 武汉恒安电气有限责任公司 | Extending board tray for testing electric circuit boards |
| CN101178838A (en) * | 2006-11-07 | 2008-05-14 | 西安神电电器有限公司 | Lightning arrestor on-line monitoring methods thereof system |
| CN101408594A (en) * | 2008-09-04 | 2009-04-15 | 温州市科星电子有限公司 | Device suitable for monitoring direct-current power supply ripple coefficient |
| CN201622316U (en) * | 2010-03-26 | 2010-11-03 | 哈尔滨国力电气有限公司 | Capacitive equipment current-leaking measuring device |
| CN102375129A (en) * | 2010-08-17 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Power supply testing circuit |
| CN203551650U (en) * | 2013-10-26 | 2014-04-16 | 云南电网公司楚雄供电局 | Circuit porcelain insulator string leakage current state indicating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108459198A (en) * | 2017-11-29 | 2018-08-28 | 国网浙江省电力公司绍兴供电公司 | A kind of portable earth strap telegram alarm device |
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Application publication date: 20160224 |