CN202204893U - On-line leakage current monitoring system - Google Patents
On-line leakage current monitoring system Download PDFInfo
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- CN202204893U CN202204893U CN2011202666428U CN201120266642U CN202204893U CN 202204893 U CN202204893 U CN 202204893U CN 2011202666428 U CN2011202666428 U CN 2011202666428U CN 201120266642 U CN201120266642 U CN 201120266642U CN 202204893 U CN202204893 U CN 202204893U
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- circuit
- leakage current
- limiting device
- monitoring
- high precision
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Abstract
The utility model relates to an on-line leakage current monitoring system which comprises a signal collection circuit, a high voltage isolation circuit, a signal processing circuit, a high precision processing chip, a microcomputer processing system, a display output circuit, a power supply monitoring and power failure protection circuit, a communication circuit, and a keyboard input circuit. The high voltage isolation circuit is connected with the signal collection circuit. The signal processing circuit is connected with the high voltage isolation circuit. The high precision processing chip is connected with the signal processing circuit. The microcomputer processing system is connected with the high precision processing chip. The display output circuit, the power supply monitoring and power failure protection circuit, the communication circuit, and the keyboard input circuit are respectively connected with the microcomputer processing system. According to the on-line leakage current monitoring system, the operation condition of a compound monitoring type voltage limiting device can be monitored in real time, the motion frequencies of the compound monitoring type voltage limiting device are recorded, adverse conditions such as aging, affection with damp and mechanical damage during the operation of the compound monitoring type voltage limiting device are reflected in real time, and each motion frequency of the compound monitoring type voltage limiting device is recorded. Therefore, the on-line leakage current monitoring system helps to prevent accidents, allows abnormal situations before accidents to be predicated, and enables the operational reliability of an electric power system to be improved.
Description
Technical field
The utility model relates to a kind of on-line monitoring system, relates in particular to a kind of On-line Monitoring of Leakage Current system.
Background technology
Compound monitor-type pressure limiting device overvoltage protection device is a kind of novel overvoltage protection device, and its structure and traditional overvoltage protection device are very different.Also there is not a kind of instrument can be used for monitoring in real time this compound monitor-type pressure limiting device ruuning situation and this compound monitor-type pressure limiting device action frequency of record at present; In real time this compound monitor-type pressure limiting device of reflection in service such as wear out, make moist, undesirable condition such as physical damage; Write down the every phase action frequency of this compound monitor-type pressure limiting device; Reach the generation of preventing accident, abnormal conditions before the prevision accident, the effect that improves the Operation of Electric Systems reliability.
The utility model content
In view of this; Be necessary to provide a kind of On-line Monitoring of Leakage Current system; Be intended to be used for monitor in real time this compound monitor-type pressure limiting device ruuning situation and this compound monitor-type pressure limiting device action frequency of record; In real time this compound monitor-type pressure limiting device of reflection in service such as wear out, make moist, undesirable condition such as physical damage, write down the every phase action frequency of this compound monitor-type pressure limiting device, reach the generation of preventing accident; Abnormal conditions before the prevision accident, the effect that improves the Operation of Electric Systems reliability.
The utility model is to realize like this; A kind of On-line Monitoring of Leakage Current system, it comprises signal acquisition circuit, the high pressure buffer circuit that is connected with this signal acquisition circuit, the signal processing circuit that is connected with this high pressure buffer circuit, the high Precision Processing chip that is connected with this signal processing circuit, the microprocessor system that is connected with this high Precision Processing chip and the display output circuit that is connected with this microprocessor system respectively, Power Supply Monitoring and power down protection circuit, communicating circuit and keyboard input circuit.
Further, this communicating circuit comprises the RS485 communication interface.
Further, this keyboard input circuit comprises keyboard.
Further, this display output circuit comprises display screen.
The beneficial effect of the On-line Monitoring of Leakage Current system that the utility model provides is: can monitor this compound monitor-type pressure limiting device ruuning situation and this compound monitor-type pressure limiting device action frequency of record in real time; In real time this compound monitor-type pressure limiting device of reflection in service such as wear out, make moist, undesirable condition such as physical damage; Write down the every phase action frequency of this compound monitor-type pressure limiting device; Reach the generation of preventing accident; Abnormal conditions before the prevision accident, the effect that improves the Operation of Electric Systems reliability.
Description of drawings
The modular structure synoptic diagram of the On-line Monitoring of Leakage Current system that Fig. 1 provides for the utility model preferred embodiments.
Symbol description
On-line Monitoring of Leakage Current system 100
High pressure buffer circuit 20
High Precision Processing chip 40
Power Supply Monitoring and power down protection circuit 70
Communicating circuit 80
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1; Its module for the On-line Monitoring of Leakage Current system 100 that the utility model preferred embodiments provides is formed synoptic diagram, and On-line Monitoring of Leakage Current system 100 comprises signal acquisition circuit 10, high pressure buffer circuit 20, signal processing circuit 30, high Precision Processing chip 40, microprocessor system 50, display output circuit 60, Power Supply Monitoring and power down protection circuit 70, communicating circuit 80 and keyboard input circuit 90.
In this embodiment, communicating circuit 80 comprises the RS485 communication interface, and keyboard input circuit 90 comprises keyboard, and display output circuit 60 comprises display screen.
During normal operation, zinc oxide resistance sheet is high-impedance state, and the Leakage Current that flows through itself is very little, and when undesirable conditions such as protector occurs wearing out, makes moist, physical damage, it is many that Leakage Current will increase, and the time has been grown and possibly cause protector to have an accident.When system had superpotential to be added on the pressure limiting device, pressure limiting device was through increasing self electric current superpotential protecting energy consumer of releasing.On-line Monitoring of Leakage Current system 100 reflected the operation conditions of pressure limiting device and write down the pressure limiting device action frequency through the electric current of real-time detection, analysis stream pressure limiting device.
Flow through the pressure limiting device electric current and input to On-line Monitoring of Leakage Current system 100 through the high-precision signal sensor; This input signal inputs to microprocessing systems 50 through voltage stabilizing, isolation, filtering, signal shaping, A/D conversion; After microprocessing systems 50 receives this signal; At once this input signal is analyzed, judged that this current signal is aging Leakage Current or action current.If aging Leakage Current then passes through high Precision Processing chip 40, on man-machine interface, show, On-line Monitoring of Leakage Current system 100 aging clearing lamps are glittering simultaneously, and the maintenance personal can be through inquire button inquiry pressure limiting device damaged condition; If action current, On-line Monitoring of Leakage Current system 100 action clearing lamps are glittering, simultaneously this phase action frequency and time are noted down, and can be through the result of inquire button query note.Whether On-line Monitoring of Leakage Current system 100 goes back detectability pressure device release unit simultaneously and moves, if release unit action, and On-line Monitoring of Leakage Current system 100 warning of will sounding a buzzer.
The leakage current on-line monitoring system that the utility model provides; Can monitor this compound monitor-type pressure limiting device (being above-mentioned pressure limiting device) ruuning situation and this compound monitor-type pressure limiting device action frequency of record in real time; In real time this compound monitor-type pressure limiting device of reflection in service such as wear out, make moist, undesirable condition such as physical damage; Write down the every phase action frequency of this compound monitor-type pressure limiting device; Reach the generation of preventing accident, abnormal conditions before the prevision accident, the effect that improves the Operation of Electric Systems reliability.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. On-line Monitoring of Leakage Current system; It is characterized in that it comprises signal acquisition circuit, the high pressure buffer circuit that is connected with this signal acquisition circuit, the signal processing circuit that is connected with this high pressure buffer circuit, the high Precision Processing chip that is connected with this signal processing circuit, the microprocessor system that is connected with this high Precision Processing chip and the display output circuit that is connected with this microprocessor system respectively, Power Supply Monitoring and power down protection circuit, communicating circuit and keyboard input circuit.
2. On-line Monitoring of Leakage Current as claimed in claim 1 system is characterized in that this communicating circuit comprises the RS485 communication interface.
3. On-line Monitoring of Leakage Current as claimed in claim 1 system is characterized in that this keyboard input circuit comprises keyboard.
4. On-line Monitoring of Leakage Current as claimed in claim 1 system is characterized in that this display output circuit comprises display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202666428U CN202204893U (en) | 2011-07-26 | 2011-07-26 | On-line leakage current monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202666428U CN202204893U (en) | 2011-07-26 | 2011-07-26 | On-line leakage current monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202204893U true CN202204893U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202666428U Expired - Fee Related CN202204893U (en) | 2011-07-26 | 2011-07-26 | On-line leakage current monitoring system |
Country Status (1)
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| CN (1) | CN202204893U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050956A (en) * | 2012-12-24 | 2013-04-17 | 安徽三和电力技术有限公司 | Composite monitoring voltage limiting device |
| CN103472284A (en) * | 2013-09-30 | 2013-12-25 | 常熟市明阳电器安装工程有限公司 | Electrical appliance abnormal voltage detector |
| CN103809075A (en) * | 2014-03-10 | 2014-05-21 | 国网浙江奉化市供电公司 | High voltage leakage meter |
| CN104076255A (en) * | 2014-06-12 | 2014-10-01 | 安徽三和电力技术有限公司 | On-line monitoring device used for insulation of power grid operation equipment |
| CN108802551A (en) * | 2018-05-31 | 2018-11-13 | 国家电网公司 | Low-voltage meter box electric leakage positioning sending device |
-
2011
- 2011-07-26 CN CN2011202666428U patent/CN202204893U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050956A (en) * | 2012-12-24 | 2013-04-17 | 安徽三和电力技术有限公司 | Composite monitoring voltage limiting device |
| CN103472284A (en) * | 2013-09-30 | 2013-12-25 | 常熟市明阳电器安装工程有限公司 | Electrical appliance abnormal voltage detector |
| CN103809075A (en) * | 2014-03-10 | 2014-05-21 | 国网浙江奉化市供电公司 | High voltage leakage meter |
| CN104076255A (en) * | 2014-06-12 | 2014-10-01 | 安徽三和电力技术有限公司 | On-line monitoring device used for insulation of power grid operation equipment |
| CN108802551A (en) * | 2018-05-31 | 2018-11-13 | 国家电网公司 | Low-voltage meter box electric leakage positioning sending device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20130726 |