CN205844420U - A kind of power switch cabinet condition monitoring system - Google Patents
A kind of power switch cabinet condition monitoring system Download PDFInfo
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- CN205844420U CN205844420U CN201620392137.0U CN201620392137U CN205844420U CN 205844420 U CN205844420 U CN 205844420U CN 201620392137 U CN201620392137 U CN 201620392137U CN 205844420 U CN205844420 U CN 205844420U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 230000003993 interaction Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 8
- 230000003750 conditioning effect Effects 0.000 claims description 7
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000010338 mechanical breakdown Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
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- 238000013461 design Methods 0.000 description 1
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Abstract
The open a kind of power switch cabinet condition monitoring system of this utility model, it includes host computer, control module, temperature collect module and current acquisition module；Temperature collect module includes multiple temperature sensor for gathering switch cabinet temperature monitor key point temperature signal, each temperature sensor outfan link control module；Current acquisition module includes that current collection circuit and angular displacement sensor are respectively used to gather circuit-breaker switching on-off current data and circuit-breaker switching on-off run-length data, and transmits to control module；Host computer sends signals collecting order to control module, and the temperature data received, current data and circuit-breaker switching on-off run-length data are transmitted to host computer by control module.This utility model can not only monitor the temperature information of key point in power switch cabinet, also is able to gather related status information during circuit-breaker switching on-off, to be more comprehensively monitored power switch cabinet state simultaneously.
Description
Technical field
This utility model relates to electric equipment on-line monitoring technique field, particularly one power switch cabinet status monitoring system
System.
Background technology
Power switch cabinet is vital power transmission and distribution device in power system, and therefore the operation to switch cubicle is carried out in real time
Monitoring, the running status understanding switch cubicle in time is particularly significant.Switch cubicle be frequently placed at high voltage, big electric current, strong electromagnetic do
Disturb in environment, the enclosed construction that domestic switch cubicle many employings radiating condition is poor, cause the modes such as artificial inspection cannot be real
Executing, also the enforcement for conventional temperature-measurement method adds difficulty.Such as thermistor temperature detecting, by high-tension electricity installation electromagnetical and temperature
The impact of degree, contact element is the most aging, poor stability.Although optical fiber temperature-measurement mode has the advantages that to utilize whole section of thermometric of optical fiber,
But the temperature online of contact point is measured in being difficulty with switch cubicle.Infrared temperature-test technology is possible not only to carrying out target at a distance
Non-contacting on-line monitoring, and respond rapidly, it is possible to obtain the status information of equipment under test rapidly.Meanwhile, it also has
Electromagnetism interference, safety and stability, cost performance advantages of higher, and event can be carried out under conditions of running not disturbing equipment under test
The diagnostic analysis of barrier.Therefore, infrared temperature-test technology has been increasingly becoming the effective technology means of power switch cabinet on-line monitoring.
Current switch cubicle monitoring system often carries out temperature monitoring just for the equipment key point in switch cubicle, the most usually
Have ignored the monitoring of other quantity of states of switch cubicle.Single temperature monitoring can not reflect the comprehensive state letter of power switch cabinet
Breath, is unfavorable for finding in time the potential faults of switch cubicle.Such as inside switch cabinet has the most complicated construction of switch to be contained therein,
Carry out the closed action of machinery repeatability due to these constructions of switch for a long time, thus resulted in switch contact positions and certain journey occurs
The wear condition of degree, is monitored diagnosis to circuit-breaker switching on-off current waveform, can explore vacuum circuit breaker and transport at divide-shut brake
A series of problem present in row process, such as auxiliary switch action loose contact, iron core combined floodgate initial stage bite, operating mechanism card
The situation such as puckery.Accordingly, it would be desirable to design a kind of system various states amount of power switch cabinet can being monitored.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of power switch cabinet condition monitoring system, it is possible to monitoring
The temperature information of key point in power switch cabinet, also is able to gather related status information during circuit-breaker switching on-off, with more simultaneously
Add and comprehensively power switch cabinet state is monitored.
Technical scheme that this utility model is taked particularly as follows: a kind of power switch cabinet condition monitoring system, including host computer,
Control module, temperature collect module and current acquisition module；
Described temperature collect module includes multiple temperature sensor being arranged at switch cabinet temperature monitor key point, each temperature
The temperature signal outfan of sensor link control module respectively；
Described current acquisition module includes current collection circuit and angular displacement sensor；Current collection circuit includes that electric current passes
Sensor and signal conditioning circuit, current sensor gathers the divide-shut brake current data of switch cubicle inner breaker, and will collect
Data are transmitted to control module through signal conditioning circuit；Angular displacement sensor gathers switch cubicle inner breaker divide-shut brake number of strokes
According to, and the data collected are transmitted to control module；
Host computer sends signals collecting order to control module, and control module is by the temperature data received, current data
And displacement data transmits to host computer.
In this utility model, described switch cabinet temperature monitor key point includes bus and chopper junction in switch cubicle,
At cable connector and switch contact.
Further, this utility model also includes current information diagnostic module, host computer by the current data that collects with
And displacement data transmits to current information diagnostic module.Concrete, host computer is receiving the electric current letter that Hall element gathers
Number, and angular displacement sensor gather operating mechanism displacement signal time, utilize prior art, both data comprehensive may determine that out
When closing cabinet breaker divide-shut brake, switch is in the current information of various location, and then by both and the relation of time, can retouch
Draw circuit-breaker switching on-off current waveform.
Current information diagnostic module diagnoses according to the current waveform collected, and tries to achieve according to divide-shut brake current waveform
The parameters such as the startup time of operating mechanism, pull bar movement time, coil electricity time, simultaneously in conjunction with the parameter of chopper itself
Scope, thus judge the running status of operating mechanism, and then the mechanical breakdown information of diagnosis killer switch, then diagnosis is tied
Really data send to host computer.Current information diagnostic module is prior art.
Further, this utility model also includes temperature alarming module, the temperature data transmission that host computer will collect
To temperature alarming module, temperature alarming module is according to temperature data output alarm signal.Temperature alarming module can use existing product
Product, its predeterminable temperature threshold, when the real time temperature data collected are beyond temperature threshold, i.e. export warning.
Staff can get more information about the running status of switch cubicle for convenience, and this utility model also includes man-machine
Interactive interface, human-computer interaction interface and host computer, temperature alarming module and current information diagnostic module connecting communication respectively.Work as temperature
When degree is beyond Threshold Alerts, human-computer interaction interface also will appear from corresponding warning message, the diagnosis data of current information diagnostic module
Also can be shown by human-computer interaction interface.Human-computer interaction interface may utilize prior art, and it can show institute's monitoring switch
While the status information of cabinet, information gathering work and state estimation also can be carried out by staff by human-computer interaction interface
Control.
Preferably, in this utility model, control module includes the master controller by bus connecting communication and from controller；
Each temperature sensor includes that sheet selects port respectively, and master controller connects the sheet of each temperature sensor and selects port, each temperature sensor
Temperature signal outfan connect respectively from controller；In current acquisition module, angle displacement sensor and current collection circuit
Outfan connect master controller.Need to obtain temperature monitoring in use, master controller can select port to enable selection by sheet
The temperature sensor of value, the temperature signal collected is passed through to transmit to master controller from controller by respective temperature sensor
In.
Above-mentioned master controller uses C8051F350 single-chip microcomputer, uses STC89S52 single-chip microcomputer from controller.
Preferably, angular displacement sensor described in the utility model uses rotating potentiometer, and its main shaft connects high pressure open circuit
The main shaft of device operating mechanism.Thus, angular displacement sensor i.e. gathers the travel information of circuit-breaker switching on-off contact, and then transmission is extremely
Control module.Rotating potentiometer is existing product.
The beneficial effects of the utility model are: can be to the temperature of switch cubicle key point and two kinds of circuit-breaker switching on-off electric current
State is monitored, and reflects the status information of power switch cabinet more fully hereinafter.Wherein angle displacement sensor and current acquisition
The cooperation of circuit, can obtain circuit-breaker switching on-off current waveform, and carrying out the diagnosis for fault state of circuit breaker provides foundation.Double
It is high that the structure of controller can play C805F350 single-chip microcomputer arithmetic speed, and carries the advantages such as a/d converter, utilizes again
The I/O resource that STC89S52 single-chip microcomputer is abundant, compensate for the less deficiency of I/O mouth in C805F350.
Accompanying drawing explanation
Fig. 1 show this utility model theory structure schematic diagram；
Fig. 2 show this utility model specific embodiment structural representation.
Detailed description of the invention
Further describe below in conjunction with the drawings and specific embodiments.
In conjunction with Fig. 1 and Fig. 2, power switch cabinet condition monitoring system of the present utility model, including host computer, control module,
Temperature collect module and current acquisition module；
Described temperature collect module includes multiple temperature sensor being arranged at switch cabinet temperature monitor key point, each temperature
The temperature signal outfan of sensor link control module respectively；
Described current acquisition module includes current collection circuit and angular displacement sensor；Current collection circuit includes that electric current passes
Sensor and signal conditioning circuit, current sensor gathers the divide-shut brake current data of switch cubicle inner breaker, and will collect
Data are transmitted to control module through signal conditioning circuit；Angular displacement sensor gathers switch cubicle inner breaker divide-shut brake contact travel
Data, and the data collected are transmitted to control module；The acquisition of circuit-breaker switching on-off run-length data is used for determining chopper
During divide-shut brake, the position that killer switch is concrete, the electric current of switch particular locations when thus can obtain circuit-breaker switching on-off
Information, in order to the mechanical breakdown of switch is judged；
Host computer sends signals collecting order to control module, and control module is by the temperature data received, current data
And circuit-breaker switching on-off run-length data transmits to host computer.
In this utility model, temperature sensor position is set, i.e. switch cabinet temperature monitor key point refers mainly to switch cubicle
Interior bus and chopper junction, at cable connector and switch contact.
In current acquisition module, current sensor uses Hall current sensor.The work of signal conditioning circuit is, will suddenly
It is reconverted into voltage signal, then by isolation after the filtered process of divide-shut brake coil current signal of your current sensor collection
This signal is amplified to control module input acceptable voltage by amplifying circuit.
Embodiment
Embodiment as shown in Figure 1, system also includes current information diagnostic module, temperature alarming module and man-machine interaction circle
Face.
Host computer is receiving the current signal that Hall element gathers, and the operating mechanism that angular displacement sensor gathers touches
After head displacement signal, when both data comprehensive may determine that breaker of switch cabinet divide-shut brake, switch is in the electricity of various location
Stream information, and then by both and the relation of time, circuit-breaker switching on-off current waveform can be depicted；
Current information diagnostic module, according to circuit-breaker switching on-off current waveform data, is asked for including killer switch actuating machine
Startup time, pull bar movement time and the supplemental characteristic of coil electricity time of structure, then by the data asked for and chopper
Switch inherent parameters scope contrasts, thus judges the running status of operating mechanism, can be diagnosed to be breaker mechanical actuating
The fault of mechanism, as auxiliary switch action loose contact, iron core combined floodgate initial stage bite, operating mechanism exist the situations such as bite.
Temperature alarming module is preset with the temperature threshold of corresponding different temperatures monitoring key point, when temperature sensor collects
When temperature data is beyond the relevant position temperature threshold preset, host computer will be reported to the police by the output of temperature alarming module.
Human-computer interaction interface can facilitate staff can get more information about the running status of switch cubicle, man-machine interaction mould circle
Face and host computer, temperature alarming module and current information diagnostic module connecting communication respectively.When temperature is beyond Threshold Alerts, people
Machine interactive interface also will appear from corresponding warning message, and the diagnosis data of current information diagnostic module also can pass through human-computer interaction interface
Show.In the present embodiment, human-computer interaction interface utilizes host computer display, by Visual Basic 6.0 program development ring
Border is write.While human-computer interaction interface can show the status information of institute's monitoring switch cabinet, staff passes through man-machine interaction
Information gathering work and state estimation also can be controlled by interface.
As in figure 2 it is shown, control module includes the master controller by bus connecting communication and from controller in the present embodiment；
Each temperature sensor includes that sheet selects port respectively, and master controller connects the sheet of each temperature sensor and selects port, each temperature sensor
Temperature signal outfan connect respectively from controller；In current acquisition module, angle displacement sensor and current collection circuit
Outfan connect master controller.The form of dual controller can make up the single controller less defect of I/O mouth.In use, it is main
Controller can select port to enable the temperature sensor selecting to need to obtain temperature monitoring value by sheet, and respective temperature sensor is by institute
The temperature signal collected is by from controller transmission to master controller.
Above-mentioned master controller uses C8051F350 single-chip microcomputer, uses 51 monolithics of STC89S52 band spi bus from controller
Machine.It is, under the instruction of master controller controls, to read the temperature sensor data that master controller is selected from the task of controller.
Temperature sensor is communicated with master and slave controller by RS485 communication interface, and current acquisition module is passed through
RS485 communication interface communicates with master controller, and host computer turns RS485 module by RS232 and communicates with master controller.
Angular displacement sensor uses rotating potentiometer, and its main shaft connects the main shaft of high-voltage breaker operation mechanism.Thus,
Angular displacement sensor i.e. gathers the formation information of circuit-breaker switching on-off contact, and then transmission is to control module.Rotating potentiometer
For existing product.
Temperature sensor can be designed based on MLX90614 Non-contact Infrared Temperature Measurement module, can measure environment simultaneously
Temperature and target temperature.
The present embodiment in use, the temperature sensors many groups being performed temperature acquisitions by master controller select,
After selected temperature sensor, carried out temperature acquisition, and the temperature that will collect by controlling selected temperature sensor from controller
It is transferred to master controller.The temperature collected and current information are passed through RS485 bus transfer to host computer by master controller.
The data message collected is analyzed processing by host computer.By temperature alarming module, the temperature data gathered is entered
Row is analyzed, if temperature exceedes setting threshold value, will carry out sound and light alarm, and notify that staff will check.Current information is examined
Disconnected module is according to the current waveform collected, in conjunction with the parameter area of chopper itself, to breaker mechanical operating mechanism system
Diagnosing malfunction, and then by diagnostic result transmit to host computer and human-computer interaction interface, in order to staff is known in time
Failure condition.
The temperature of switch cubicle key point and circuit-breaker switching on-off electric current two states can be monitored by this utility model,
Reflect the status information of power switch cabinet more fully hereinafter.Wherein the coordinating of angle displacement sensor and current collection circuit, can
To obtain circuit-breaker switching on-off current waveform, carrying out the diagnosis for fault state of circuit breaker provides foundation.The structure of dual controller
C805F350 single-chip microcomputer arithmetic speed can be played high, and carry the advantages such as a/d converter, utilize again STC89S52 single-chip microcomputer rich
Rich I/O resource, compensate for the less deficiency of I/O mouth in C805F350.
Claims (7)
1. a power switch cabinet condition monitoring system, is characterized in that, including host computer, control module, temperature collect module and
Current acquisition module；
Described temperature collect module includes multiple temperature sensor being arranged at switch cabinet temperature monitor key point, each temperature sensing
The temperature signal outfan of device link control module respectively；
Described current acquisition module includes current collection circuit and angular displacement sensor；Current collection circuit includes current sensor
And signal conditioning circuit, current sensor gathers the divide-shut brake current data of switch cubicle inner breaker, and the data that will collect
Transmit to control module through signal conditioning circuit；Angular displacement sensor gathers switch cubicle inner breaker divide-shut brake run-length data, and
The data collected are transmitted to control module；
Host computer to control module send signals collecting order, control module by the temperature data received, current data and
Circuit-breaker switching on-off run-length data transmits to host computer.
Power switch cabinet condition monitoring system the most according to claim 1, is characterized in that, also includes that current information diagnoses mould
Block；The current data collected and circuit-breaker switching on-off run-length data are transmitted to current information diagnostic module by host computer.
Power switch cabinet condition monitoring system the most according to claim 2, is characterized in that, also includes temperature alarming module,
The temperature data collected is transmitted to temperature alarming module by host computer, and temperature alarming module exports alarm signal according to temperature data
Number.
Power switch cabinet condition monitoring system the most according to claim 3, is characterized in that also including human-computer interaction interface, people
Machine interactive interface and host computer, temperature alarming module and current information diagnostic module connecting communication respectively.
Power switch cabinet condition monitoring system the most according to claim 1, is characterized in that, control module includes passing through bus
The master controller of connecting communication and from controller；Each temperature sensor includes that sheet selects port respectively, and master controller connects each temperature
The sheet of sensor selects port, and the temperature signal outfan of each temperature sensor connects respectively from controller；In current acquisition module,
The outfan of angle displacement sensor and current collection circuit connects master controller.
6. according to the power switch cabinet condition monitoring system described in any one of claim 1 to 5, it is characterized in that, master controller is adopted
Use C8051F350 single-chip microcomputer, use STC89S52 single-chip microcomputer from controller.
7., according to the power switch cabinet condition monitoring system described in any one of claim 1 to 5, it is characterized in that, angle displacement transducer
Device uses rotating potentiometer, and its main shaft connects the main shaft of high-voltage breaker operation mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620392137.0U CN205844420U (en) | 2016-05-04 | 2016-05-04 | A kind of power switch cabinet condition monitoring system |
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| CN201620392137.0U CN205844420U (en) | 2016-05-04 | 2016-05-04 | A kind of power switch cabinet condition monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866587A (en) * | 2016-05-04 | 2016-08-17 | 国网江苏省电力公司电力科学研究院 | Monitoring system for condition of electric power switch cabinet |
| CN106774034A (en) * | 2017-03-13 | 2017-05-31 | 沈阳工程学院 | A kind of switch cubicle monitoring device |
| CN111740493A (en) * | 2020-06-02 | 2020-10-02 | 国网河北省电力有限公司邯郸供电分公司 | Power switch cabinet state monitoring system based on internet of things technology |
| CN113917323A (en) * | 2021-09-30 | 2022-01-11 | 深圳供电局有限公司 | Intelligent pole-mounted switch monitoring system and method |
-
2016
- 2016-05-04 CN CN201620392137.0U patent/CN205844420U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866587A (en) * | 2016-05-04 | 2016-08-17 | 国网江苏省电力公司电力科学研究院 | Monitoring system for condition of electric power switch cabinet |
| CN106774034A (en) * | 2017-03-13 | 2017-05-31 | 沈阳工程学院 | A kind of switch cubicle monitoring device |
| CN111740493A (en) * | 2020-06-02 | 2020-10-02 | 国网河北省电力有限公司邯郸供电分公司 | Power switch cabinet state monitoring system based on internet of things technology |
| CN113917323A (en) * | 2021-09-30 | 2022-01-11 | 深圳供电局有限公司 | Intelligent pole-mounted switch monitoring system and method |
| CN113917323B (en) * | 2021-09-30 | 2023-12-01 | 深圳供电局有限公司 | Intelligent on-column switch monitoring system and method |
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