CN207964966U - A kind of arrester on-line monitoring system - Google Patents
A kind of arrester on-line monitoring system Download PDFInfo
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- CN207964966U CN207964966U CN201820013063.4U CN201820013063U CN207964966U CN 207964966 U CN207964966 U CN 207964966U CN 201820013063 U CN201820013063 U CN 201820013063U CN 207964966 U CN207964966 U CN 207964966U
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- arrester
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- high pressure
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Abstract
A kind of arrester on-line monitoring system, including high pressure generator, Zinc-Oxide Arrester, arrester detecting device, current transformer, RS485 network element, radio network unit, central processing unit and display unit, wherein：The current transformer is installed on the ground terminal of the Zinc-Oxide Arrester；Described arrester detecting device one end is connected with the current transformer, and the other end is connect with RS485 network element；The ungrounded end of the Zinc-Oxide Arrester is connect with the output end of the high pressure generator；The RS485 network element is also connect with the central processing unit；The central processing unit is provided with bluetooth wireless interface and radio network interface；The central processing unit connect with the high pressure generator and controls the action of the high pressure generator.The utility model, which is used to monitor arrester on-line, carries out simulation test, by being monitored to arrester in laboratory environment, greatly improves power grid security performance, has ensured that people's lives are orderly, safe.
Description
Technical field
The utility model is related to a kind of on-line monitoring systems, and relate more specifically to a kind of simulated in laboratory environment and keep away
The system of thunder device on-line monitoring.
Background technology
Arrester（Metal Oxide Surge Arrester）Hereinafter referred to as MOA is the important protection electricity of electric system
Device, it can very effectively limit power network overvoltage amplitude, to protect electrical equipment from overvoltage injury.Arrester performance
Quality has significant impact to the safe operation of electrical equipment.But due to MOA gaplesss, bear to transport in the process of running for a long time
The effect of row voltage, valve block will gradually degrade, while dysplasia causes poorly sealed, makes valve block be easy to make moist, leakage current
It can aggravate to deteriorate again, increase to further result in leakage current, cause arrester to damage, or even explode, and be protected
Equipment then loses protection.In addition the resistive composition in leakage current will generate active loss, and valve block is made to heat up, may shape when serious
Cause MOA to damage or explosion at thermal runaway, and then cause large-area power-cuts failure, power equipment is from periodic inspection to repair based on condition of component
It is future direction that direction, which is developed, in order to understand the operation conditions of arrester in real time, finds failure in time and takes steps to
The generation for preventing failure, to arrester on-line monitoring simulation test with regard to necessary.
Utility model content
For above-mentioned background technology, the utility model discloses a kind of arrester on-line monitoring systems, can realize to keeping away
The simulation test of thunder device in laboratory environments can realize the operation to arrester by carrying out simulation test to arrester
State makes accurate judgement, avoids unnecessary accident and danger, substantially increases power grid security, has ensured people's lives peace
Entirely, orderly.
The utility model uses following technical scheme：
A kind of arrester on-line monitoring system, including：High pressure generator, Zinc-Oxide Arrester, arrester detecting device, electricity
Current transformer, RS485 network element, radio network unit, central processing unit and display unit, wherein：The current transformer
It is installed on the ground terminal of the Zinc-Oxide Arrester；Described arrester detecting device one end is connected with the current transformer, separately
One end is connect with RS485 network element；The ungrounded end of the Zinc-Oxide Arrester connects with the output end of the high pressure generator
It connects；The RS485 network element is also connect with the central processing unit；The central processing unit be provided with bluetooth wireless interface and
Radio network interface；The central processing unit connect with the high pressure generator and controls the action of the high pressure generator, institute
It states high pressure generator and is also associated with power supply, and the power supply is to above-mentioned each unit module for power supply.
Preferably, the central processing unit is provided with radio network interface, and the central processing unit is also associated with report
Alert unit, print unit and display unit.
Preferably, the display unit includes being integrated in the small screen display unit of the central processing unit and being arranged in reality
The large screen display unit on the wall of room is tested, and the large screen display unit is provided with blue tooth interface and wireless network connects
Mouthful.
Preferably, the radio network unit is at least one of bluetooth, LAN and wireless network.
Preferably, the central processing unit is logical by the radio network unit and large screen display unit, PDA and mobile phone
News.
Preferably, the arrester detecting device includes current acquisition unit and voltage acquisition unit, the current acquisition
There is unit a pair of of binary channels current transformer input circuit for being connected in parallel, the current acquisition unit to include：Input terminal with
The output end of the first connected amplifier A1, the first amplifier A1 of the current transformer be sequentially connected in series first resistor R1,
The output end of first analog to digital conversion circuit ADC1 and the first controller MCU1, the first controller MCU1 connect RS485 nets
Network unit passes through the first capacitance C1 ground connection between the first resistor R1 and the first analog to digital conversion circuit ADC1；The voltage is adopted
Collecting unit includes：Voltage transformer, the second amplifier A2, second resistance R2, the second analog to digital conversion circuit ADC2 being sequentially connected in series
And the output end of second controller MCU2, the second controller MCU2 connect RS485 network element, the second resistance R2
Pass through the second capacitance C2 ground connection.
Preferably, the high pressure generator is high voltage direct current generator, and the output voltage of the high pressure generator is
300KV, output current 5mA.
Preferably, the output voltage range of the power supply is 0-220V.
Preferably, being additionally provided with outside the arrester detecting device prevents the decoupling module of electromagnetic interference.
Positive beneficial effect：
（1）The utility model generates high pressure in laboratory environments using high pressure generator, generates experiment and needs signal,
Output voltage 300KV, output current 5mA；
（2）The utility model simulates the unmanned on-line monitoring of Zinc-Oxide Arrester, by monitoring current in resistance property or total current,
More acurrate, the effective operational safety state for judging arrester；
（3）The utility model realizes that Zinc-Oxide Arrester operation data is wirelessly uploaded and received anywhere or anytime, Yong Hutong
The data that central processing unit is sent out can be received immediately using PDA or mobile phone by crossing, and greatly reduce running quickly back and forth for operating personnel
Wave meter reading, greatly improves working efficiency；
（4）The utility model is by acquiring and analyzing to voltage signal acquisition, current signal, to the operating status of arrester
Make accurate judgement, avoid unnecessary accident and danger, substantially increase power grid security, ensured people's lives safety,
Orderly；
（5）The utility model uses RS485 network element, sharing data resources, and can realize that arrester state is supervised online
The management functions such as real time print, the analysis of measured data；
（6）The utility model is provided with the decoupling module for preventing electromagnetic interference, Neng Gouping outside arrester detecting device
The electromagnetic interference during experiment is covered, accuracy of detection is improved.
Description of the drawings
Fig. 1 is the utility model principle block diagram；
Fig. 2 is the current acquisition cellular construction schematic diagram of the utility model；
Fig. 3 is the voltage acquisition unit structural schematic diagram of the utility model.
Specific implementation mode
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that reality described herein
It applies example to be only used for describing and explaining the present invention, is not used to limit the utility model.
As shown in Figure 1, a kind of arrester on-line monitoring system, including：High pressure generator, Zinc-Oxide Arrester, arrester
Detection device, current transformer, RS485 network element, radio network unit, central processing unit and display unit, wherein：It is described
Current transformer is installed on the ground terminal of the Zinc-Oxide Arrester；Described arrester detecting device one end and the Current Mutual Inductance
Device is connected, and the other end is connect with RS485 network element；The ungrounded end of the Zinc-Oxide Arrester and the high pressure generator
Output end connects；The RS485 network element is also connect with the central processing unit；The central processing unit be provided with bluetooth without
Line interface and radio network interface；The central processing unit connect with the high pressure generator and controls the high pressure generator
Action, the high pressure generator are also associated with power supply, and the power supply is to above-mentioned each unit module for power supply.This technical side
Case is designed in experiment room environmental Imitating Zinc-Oxide Arrester monitoring test.
In the present invention, the central processing unit is provided with radio network interface, and the central processing unit is also
It is connected with alarm unit, print unit and display unit.
Further, the display unit includes being integrated in the small screen display unit of the central processing unit and being arranged to exist
Large screen display unit on the wall of laboratory, and the large screen display unit is provided with blue tooth interface and wireless network connects
Mouthful.The small screen display unit can realize the instant playback of data, if need to demonstrate a large amount of data at the trial,
Analysis and research, can be shown the data in central processing unit by large screen display unit.
In the present invention, the radio network unit is at least one of bluetooth, LAN and wireless network.
In the present invention, the central processing unit passes through radio network unit and the large screen display unit, PDA
And mobile communication.This technical solution can make user more easily receive data, and data is made to be transmitted in user hand immediately.
The total current and current in resistance property of Leakage Current during specific embodiment, the main monitoring test of arrester, thus
Its voltage, electric current must be sampled.Voltage signal is obtained by busbar PT through voltage sensor, and current signal is lightning-arrest by being mounted in
Core-theaded type sensor on device ground wire obtains.
As shown in Figures 2 and 3, the arrester detecting device further includes current acquisition unit and voltage acquisition unit, institute
Stating current acquisition unit has a pair of of the binary channels current transformer input circuit being connected in parallel, the current acquisition unit packet
It includes：The first amplifier A1 that input terminal is connected with the current transformer, the output end of the first amplifier A1 are sequentially connected in series
First resistor R1, the first analog to digital conversion circuit ADC1 and the first controller MCU1, the output end of the first controller MCU1
RS485 network element is connected, passes through the first capacitance C1 ground connection between the first resistor R1 and the first analog to digital conversion circuit ADC1；
The voltage acquisition unit includes：Voltage transformer, the second amplifier A2, second resistance R2, the second modulus being sequentially connected in series turn
The output end connection RS485 network element of circuit ADC2 and second controller MCU2, the second controller MCU2 are changed, it is described
Second resistance R2 passes through the second capacitance C2 ground connection.
Current acquisition unit is by high-precision IV converters, programmable amplifier, frequency overlapped-resistable filter, high-speed synchronous ADC, FPGA
It is constituted with CPU.Program is switched to automatically according to current sampled value on most suitable range, and dynamic promotes the number of significant digit of ADC.
Using adaptive drift algorithm, the influence of temperature is effectively filtered out.Current acquisition unit acquires leakage current values, is passed by RS485
It is defeated to arrive central processing unit.Voltage acquisition unit by voltage transformer, high-precision IV converters, frequency overlapped-resistable filter,
High-speed synchronous ADC, FPGA and CPU are constituted.Program is switched to automatically according to current sampled value on most suitable range, is dynamically carried
Rise the number of significant digit of ADC.Using adaptive drift algorithm, the influence of temperature is effectively filtered out.Voltage acquisition unit acquires busbar electricity
Pressure and frequency, central processing unit is transferred to by RS485.Central processing unit is adopted by RS485 and current acquisition unit and voltage
Collect unit and realizes data communication.Central processing unit calculates leakage current, busbar voltage and frequency by analysis, calculates zinc oxide
Current in resistance property and the capacitance-resistance ratio of arrester, then other control units or display unit are transferred to by radio network unit, than
It is such as transferred to large screen display unit, PDA or mobile phone, so that user inquires the online monitoring data of Zinc-Oxide Arrester.
In the present invention, the high pressure generator is high voltage direct current generator, and the high pressure generator is defeated
Go out voltage 300KV, output current 5mA.High voltage direct current generator is to provide the instrument in high voltage direct current source, before using the instrument
Must be first instrument reliable ground, high-frequency direct-current high pressure generator is also known as Portable DC high pressure and occurs in a particular embodiment
Device is to be suitable for power department, industrial enterprise's power department, R＆D institution, railway, chemical industry, power plant etc. to take shelter from the thunder to zinc oxide
The equipment such as device, magnetic blowout arrester, power cable, generator, transformer, switch carry out DC high potential test.In the present embodiment,
Its technical indicator is：
Output rated voltage electric current is：60kV/2mA、60kV/10mA、120kV/2mA、120kV/5mA、200kV/2mA、
200kV/5mA、300kV/2mA、300kv/5mA。
Working power：50Hz；220V±10%
Measurement error：Digital voltmeter：1%（Full scale）± 1 word；
Digital electronic ammeter：1%（Full scale）± 1 word
Stability random fluctuation, when power source change ± 10% ,≤0.5%
Ripple factor≤0.5%（Full scale）
Working method：Interruption uses, nominal load 60min
Working environment：Environment temperature：- 15 DEG C~50 DEG C；
Relative humidity：＜ 90%（Without condensation）；
Height above sea level：＜ 2500m
In the present embodiment, the output voltage range of the power supply is 0-220V, and power supply meets above-mentioned each unit module
The needs of normal work.Usually by commercial power supply 220V voltages, small voltage is met by alternating current transformation（Compare 48V）Needs.
In a particular embodiment, being additionally provided with outside the arrester detecting device prevents the decoupling module of electromagnetic interference.
Since in laboratory environment, there are the possibility of various electromagnetic interferences, decoupling module can be effectively prevented electromagnetic interference, improve
Accuracy of detection during experiment.Decoupling module is generally arranged on arrester detecting device shell.
The utility model grasps the working condition of Zinc-Oxide Arrester convenient for user in laboratory environments.System does not have to disconnected
The ground lead for opening tested arrester does not cause security risk to running transformer, has anti-external electromagnetic, electric field dry
It disturbs, high certainty of measurement, numerical value is accurate, small, light-weight, is easily installed.Current transformer obtains the earth current of arrester,
Current signal is converted to digital signal by current acquisition unit, is sent to central processing unit by RS485 network element, voltage is adopted
Voltage signal is converted to digital signal by collection unit, central processing unit is sent to by RS485 network element, finally by wireless
Network element is convenient for user's timely processing by the small screen display unit instant playback, in large size demonstration, analysis, experiment activity,
It can be by the way that radio network unit will treated that data are shown by large screen display unit, convenient under the more environment of number
It uses, can also directly be received by PDA or mobile phone, so that data is transmitted in user hand immediately, directly inquired convenient for user
Data are very convenient.
In conclusion the utility model has following positive beneficial effect：
1, the utility model generates high pressure in laboratory environments using high pressure generator, generates experiment and needs signal,
Output voltage 300KV, output current 5mA；
2, the unmanned on-line monitoring of the utility model simulation Zinc-Oxide Arrester, by monitoring current in resistance property or total current,
More acurrate, the effective operational safety state for judging arrester；
3, the utility model realizes that Zinc-Oxide Arrester operation data is wirelessly uploaded and received anywhere or anytime, and user passes through
The data that central processing unit is sent out can be received immediately using PDA or mobile phone, greatly reduce hurrying back and forth back and forth for operating personnel
Meter reading greatly improves working efficiency；
4, the utility model is by acquiring and analyzing to voltage signal acquisition, current signal, to the operating status of arrester
Make accurate judgement, avoid unnecessary accident and danger, substantially increase power grid security, ensured people's lives safety,
Orderly；
5, the utility model uses RS485 network element, sharing data resources, and can realize arrester state on_line monitoring
The management functions such as real time print, the analysis of data.
6, the utility model is provided with the decoupling module for preventing electromagnetic interference outside arrester detecting device, can shield
Electromagnetic interference during experiment improves accuracy of detection.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These specific implementation modes are merely illustrative of, and those skilled in the art is not departing from the principles of the present invention and essence
In the case of, various omissions, substitutions and changes can be carried out to the details of the above method and system.For example, merging above method step
Suddenly, to execute substantially identical function according to substantially identical method to realize that it is new that substantially identical result then belongs to this practicality
The range of type.Therefore, the scope of the utility model is only limited by the claims that follow.
Claims (9)
1. a kind of arrester on-line monitoring system, which is characterized in that including：High pressure generator, Zinc-Oxide Arrester, arrester inspection
Device, current transformer, RS485 network element, radio network unit, central processing unit and display unit are surveyed, wherein：The electricity
Current transformer is installed on the ground terminal of the Zinc-Oxide Arrester；Described arrester detecting device one end and the current transformer
It is connected, the other end is connect with the RS485 network element；The ungrounded end of the Zinc-Oxide Arrester and the high pressure generator
Output end connection；The RS485 network element is also connect with the central processing unit；The central processing unit is provided with bluetooth
Wireless interface and radio network interface；The central processing unit connect with the high pressure generator and controls the high pressure generator
Action, the high pressure generator is also associated with power supply, and the power supply is to above-mentioned each unit module for power supply.
2. a kind of arrester on-line monitoring system according to claim 1, which is characterized in that the central processing unit setting
There is radio network interface, and the central processing unit is also associated with alarm unit, print unit and display unit.
3. a kind of arrester on-line monitoring system according to claim 2, which is characterized in that the display unit includes collection
The small screen display unit of central processing unit described in Cheng Yu and the large screen display unit being arranged on the wall of laboratory, and institute
It states large screen display unit and is provided with blue tooth interface and radio network interface.
4. a kind of arrester on-line monitoring system according to claim 1, which is characterized in that the radio network unit is
At least one of bluetooth, LAN and wireless network.
5. a kind of arrester on-line monitoring system according to claim 3, which is characterized in that the central processing unit passes through
The radio network unit and the large screen display unit, PDA and mobile communication.
6. a kind of arrester on-line monitoring system according to claim 1, which is characterized in that the arrester detecting device
Including current acquisition unit and voltage acquisition unit, the current acquisition unit has a pair of of the binary channels electric current being connected in parallel mutual
Sensor input circuit, the current acquisition unit include：The first amplifier A1 that input terminal is connected with the current transformer, institute
The output end for stating the first amplifier A1 is sequentially connected in series first resistor R1, the first analog to digital conversion circuit ADC1 and the first controller
The output end of MCU1, the first controller MCU1 connect RS485 network element, the first resistor R1 and the first analog-to-digital conversion
Pass through the first capacitance C1 ground connection between circuit ADC1；The voltage acquisition unit includes：The voltage transformer that is sequentially connected in series, second
Amplifier A2, second resistance R2, the second analog to digital conversion circuit ADC2 and second controller MCU2, the second controller MCU2
Output end connect RS485 network element, the second resistance R2 passes through the second capacitance C2 ground connection.
7. a kind of arrester on-line monitoring system according to claim 1, which is characterized in that the high pressure generator is straight
High pressure generator is flowed, and the output voltage of the high pressure generator is 300KV, output current 5mA.
8. a kind of arrester on-line monitoring system according to claim 1, which is characterized in that the output voltage of the power supply
Ranging from 0-220V.
9. a kind of arrester on-line monitoring system according to claim 6, which is characterized in that the arrester detecting device
Outside is additionally provided with the decoupling module for preventing electromagnetic interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820013063.4U CN207964966U (en) | 2018-01-04 | 2018-01-04 | A kind of arrester on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820013063.4U CN207964966U (en) | 2018-01-04 | 2018-01-04 | A kind of arrester on-line monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN207964966U true CN207964966U (en) | 2018-10-12 |
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ID=63731910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820013063.4U Expired - Fee Related CN207964966U (en) | 2018-01-04 | 2018-01-04 | A kind of arrester on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207964966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816806A (en) * | 2020-08-28 | 2021-05-18 | 苏州灵成电气有限公司 | Zinc oxide arrester test system and calibration method |
| CN113009263A (en) * | 2021-03-08 | 2021-06-22 | 国网山东省电力公司青州市供电公司 | Embedded system and method for collecting monitoring data of zinc oxide arrester |
-
2018
- 2018-01-04 CN CN201820013063.4U patent/CN207964966U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816806A (en) * | 2020-08-28 | 2021-05-18 | 苏州灵成电气有限公司 | Zinc oxide arrester test system and calibration method |
| CN113009263A (en) * | 2021-03-08 | 2021-06-22 | 国网山东省电力公司青州市供电公司 | Embedded system and method for collecting monitoring data of zinc oxide arrester |
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