CN107765116A - A kind of on-line monitoring method for cable termination on-Line Monitor Device - Google Patents
A kind of on-line monitoring method for cable termination on-Line Monitor Device Download PDFInfo
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- CN107765116A CN107765116A CN201710842801.6A CN201710842801A CN107765116A CN 107765116 A CN107765116 A CN 107765116A CN 201710842801 A CN201710842801 A CN 201710842801A CN 107765116 A CN107765116 A CN 107765116A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The present invention provides a kind of on-line monitoring method for cable termination on-Line Monitor Device, including at least following steps：Signal detection step：Current signal on the core of current transformer detection cable terminal, and voltage signal is converted into by resistance；Signal transacting step：Amplifier amplifies voltage signal；Data collection steps：Voltage signal after CPU amplifies amplifier is converted into magnitude of voltage；Data displaying：Display device real-time display magnitude of voltage so that staff can understand the aging conditions of cable termination silica gel in real time；Send warning step：Preset voltage value is provided with CPU, CPU is contrasted magnitude of voltage and preset voltage value, when magnitude of voltage is more than preset voltage value, clock starts timing, the first preset time is provided with clock, when timing time is more than the first preset time, judge that cable termination is in aging critical condition, CPU sends caution signal to display device, reaches the preventative purpose informed, maintainer can change cable termination in time.
Description
Technical field
The present invention relates to on-line monitoring method technical field, more particularly to it is a kind of for cable termination on-Line Monitor Device
On-line monitoring method.
Background technology
10KV cable plugs, the silica gel of cable termination are in use because the effect of environment and electric field can be old in advance
Change, past, the widely used preventive experiment in China is that cable termination is detected by Sasser, and this detection needs stop
Electricity is carried out, and power off time is longer, and the use to cable termination impacts, and can not be real-time to the ageing state of cable termination
On-line monitoring, all it is ability after causing tripping operation power-off to the accident such as cable termination failure, ground connection or short circuit, device damage
It was found that.
The country uses cable termination real time temperature monitoring system at present, and the real-time monitoring of temperature can not reflect in time
The situation of cable terminal insulation aging, and temperature can not accurately quantify the behaviour in service of current cable, and temperature height may also
Be because load excessive caused by, and when occur temperature it is too high when often accident led to, the work checked erroneous ideas at the outset can not be played
With.
The content of the invention
It is an object of the invention to provide a kind of on-line monitoring method for cable termination on-Line Monitor Device, for reality
When monitor cable termination silica gel aging conditions.
In order to achieve the above object, the present invention adopts the following technical scheme that：One kind is used for cable termination on-Line Monitor Device
On-line monitoring method, cable termination on-Line Monitor Device includes degradation detector and display device, and degradation detector includes set
The current transformer that is located on cable termination, the resistance electrically connected with current transformer, CPU, putting between resistance and CPU
Big device and the clock electrically connected with CPU, on-line monitoring method comprise at least following steps：
Signal detection step：Current signal on the core of current transformer detection cable terminal, and pass through
Resistance is converted into voltage signal；
Signal transacting step：Amplifier amplifies voltage signal；
Data collection steps：Voltage signal after CPU amplifies amplifier is converted into magnitude of voltage；
Data displaying：Magnitude of voltage described in display device real-time display；
Send warning step：Preset voltage value is provided with CPU, CPU is contrasted the magnitude of voltage with preset voltage value,
When magnitude of voltage is more than preset voltage value, clock starts timing, and the first preset time is provided with clock, when timing time is more than first
During preset time, CPU sends caution signal to display device.
Further, the degradation detector also includes filter circuit, and signal transacting step also includes：Filter circuit is by electricity
Interference signal in pressure signal is filtered out.
Further, the on-line monitoring method also includes setting steps：Default electricity in CPU is set by display device
The first preset time in pressure value and clock.
Further, the degradation detector also includes current sensor, and signal detection step also includes：Current sensor
Detect the current signal on core；Data collection steps also include：Current signal is converted into current value by CPU；Data display step
Suddenly also include：Current value described in display device real-time display.
Further, the warning step that sends also includes：Be provided with pre-set current value in CPU, CPU by the current value and
Pre-set current value is contrasted, and when current value is more than pre-set current value, CPU sends caution signal to display device.
Further, the degradation detector also includes temperature sensor, and signal detection step also includes：Temperature sensor
Detect the temperature signal on core；Data collection steps also include：Temperature signal is converted into temperature value by CPU；Data display step
Suddenly also include：Temperature value described in display device real-time display.
Further, the warning step that sends also includes：Be provided with preset temperature value in CPU, CPU by the temperature value and
Preset temperature value is contrasted, and when temperature value is more than preset temperature value, clock starts timing, when being preset in clock provided with second
Between, when timing time is more than the second preset time, CPU sends caution signal to display device.
Further, cable termination on-Line Monitor Device also includes DTU, and on-line monitoring method also includes communicating step：DTU
Mobile terminal is connected by way of wireless telecommunications and the content shown in display device is sent to mobile terminal.
Further, the cable termination on-Line Monitor Device also includes the total current sensor electrically connected with cable, letter
Number detecting step also includes：Total current signal in total current sensor detection cable；Data collection steps also include：CPU will
Total current signal is converted into total current value；Data displaying also includes：Total current value described in display device real-time display.
Further, the warning step that sends also includes：It is provided with default total current value in CPU, CPU is by the total current
Value is contrasted with default total current value, and when total current value is more than default total current value, CPU sends warning letter to display device
Number.
After adopting the above technical scheme, the invention has the advantages that：
1st, by setting signal detecting step, the current signal on the core of current transformer detection cable terminal, and lead to
Cross resistance and be converted into voltage signal, the current conditions on core are may determine that by the voltage signal at resistance both ends, so as to judge
Go out the silica gel aging conditions of core；By setting signal processing step, amplifier amplifies voltage signal so that faint voltage
Signal is amplified in the range of CPU can input, and facilitates the conversion and contrast of follow-up data, while reduces measurement error, is carried
The accuracy of high on-line monitoring method detection；Voltage signal after amplifier is amplified by setting data collection steps, CPU turns
Turn to magnitude of voltage so that the silica gel aging conditions of core quantify, and facilitate staff to observe and judge, and facilitate follow-up data
Contrast；By setting data displaying, the magnitude of voltage that display device real-time display measures so that staff is from display
Can be with the voltage condition of Real Time Observation to core, so as to which the aging conditions of cable termination silica gel, nothing be well understood on device
It need to have a power failure and be detected, reduce maintenance power off time, also mitigate the labor intensity of staff；Warning is sent by setting
Step, be provided with preset voltage value in CPU, be provided with the first preset time in clock, CPU will measure gained magnitude of voltage with it is default
Magnitude of voltage is contrasted, and when magnitude of voltage is more than preset voltage value, clock starts timing, when timing time is more than the first preset time
When, judge that cable termination is in aging critical condition, CPU sends caution signal to display device, reaches the preventative mesh informed
, premature failure early warning is advantageous to maintainer and changes cable termination in time, avoids the damage of equipment, reduces cable short circuit and burns
Etc. the generation of security incident, meanwhile, by setting clock in the step, a period of time high pressure shape is kept in the cable of cable termination
Just it is judged as aging critical condition after state, avoids other factors so that erroneous judgement caused by voltage temporarily raises, improves on-line monitoring
The accuracy of method early warning.
2nd, by setting filter circuit in signal transacting step, by setting filter circuit to filter out interference signal, carry
The accuracy of high detection result so that the monitoring result of on-line monitoring method is relatively reliable.
3rd, on-line monitoring method also includes setting steps, passes through the preset voltage value and clock in setting steps CPU
The first interior preset time can be changed by display device so that the on-line monitoring method goes under different condition
Cable termination, expand the scope of application of on-line monitoring method.
4th, by increasing the current signal on current sensor detection core, data collection steps in signal detection step
Current signal is converted into current value by middle increase CPU, also includes the electricity that display device real-time display measures in data displaying
Flow valuve, when the voltage condition on core can not judge the aging conditions of cable termination silica gel, current conditions can be used for aiding in
Judge, meanwhile, it is recognized that whether short trouble occurs by the current conditions of core, makes staff to cable termination feelings
The grasp of condition is more comprehensive so that the monitoring of on-line monitoring method is more comprehensively reliable.
5th, by setting pre-set current value sending to alert in CPU in step, CPU will measure obtained current value with it is pre-
If current value is contrasted, when current value is more than pre-set current value, judge that cable termination is in aging critical condition, CPU is to aobvious
Showing device sends caution signal, and further ensuring that the silica gel aging conditions of cable termination can be sent out with the very first time by staff
It is existing, and go to replacing cable termination, the damage of equipment is avoided, reduces the generation that cable short circuit such as burns at the security incident.
6th, by increasing the temperature signal on temperature sensor detection core, data collection steps in signal detection step
Temperature signal is converted into temperature value by middle increase CPU, increases display device real-time display measurement gained temperature in data displaying
Angle value, when the voltage condition on core can not judge the aging conditions of cable termination silica gel, temperature conditions on core can be with
For the silica gel aging conditions of auxiliary judgment cable termination, make grasp of the staff to cable termination situation more comprehensive, make
The monitoring for obtaining on-line monitoring method is more comprehensively reliable.
7th, by setting preset temperature value in the CPU in warning step is sent, clock is interior to set the second preset temperature,
CPU will measure gained temperature value and be contrasted with preset temperature value, and when measurement gained temperature value is more than preset temperature value, clock is opened
Beginning timing, the second preset time is provided with clock, when timing time is more than the second preset time, judges that cable termination is in
Aging critical condition, CPU send caution signal to display device, further ensure that the silica gel aging conditions of cable termination can be with the
One time was found by staff, and went to replacing cable termination, avoided the damage of equipment, reduces cable short circuit and burns and waits safely
The generation of accident；Meanwhile a period of time is kept in the cable of cable termination by the preset time of clock setting second in the step
Just it is judged as aging critical condition after the condition of high temperature, avoids other factors so that erroneous judgement caused by temperature temporarily raises, is improved
The accuracy of line monitoring method early warning.
8th, by setting communicating step, DTU is connected mobile terminal by way of wireless telecommunications and will shown in display device
The content shown is sent to mobile terminal so that staff can understand the situation of cable termination, nothing by mobile terminal remote
Scene need to be arrived to be maked an inspection tour, alleviate the labor intensity of staff, while ensure that staff can be with real time inspection cable
The situation of terminal, and the very first time receive caution signal, be advantageous to maintainer and change cable termination in time, avoid the damage of equipment
It is bad, the generation for the security incidents such as reduction cable short circuit is burnt.
9th, by increasing in signal detection step by the total current signal in total current sensor detection cable, in number
Total current signal is converted into by total current value by CPU according to increase in acquisition step, increase is by showing in data displaying
Total current value described in showing device real-time display, by measuring whether total cable surface has electric current by determining the silica gel of cable
Whether aging phenomenon is had, and the silica gel of cable provides further protection to the core in cable, if the silica gel of cable occurs always
Change phenomenon, can accelerate the aging speed of core, therefore the silica gel aging phenomenon of cable is monitored and may further ensure that cable
Terminal it is safe to use.
10th, by setting default total current value in the CPU in warning step is sent, CPU will measure obtained total current
Value is contrasted with default total current value, when the total current value that measurement obtains is more than default total current value, judges that cable is in
Aging critical condition, CPU send caution signal to display device, reach the preventative purpose informed, premature failure early warning is favourable
Cable is changed in time in maintainer, avoids the cable core aging in cable, is reduced cable short circuit and the security incident such as is burnt
Occur.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is that cable termination on-Line Monitor Device used in on-line monitoring method described in the embodiment of the present invention one is arranged on cable
Position view in terminal.
Fig. 2 is the structural frames of cable termination on-Line Monitor Device used in on-line monitoring method described in the embodiment of the present invention one
Figure.
Fig. 3 is the flow chart of on-line monitoring method described in the embodiment of the present invention one.
Fig. 4 is the flow chart of on-line monitoring method described in the embodiment of the present invention two.
It is as follows that each component names are marked in figure：
1st, core；2nd, degradation detector；21st, current transformer；22nd, resistance；23、CPU；24th, clock；25th, amplifier；
26th, filtering circuit；27th, current sensor；28th, temperature sensor；3rd, detector geometrical clamp；4th, display device；5th, cable；6th, lead
Tape；7th, total current sensor.
Embodiment
Embodiment one：
As shown in Figures 1 to 3, the present invention provides a kind of on-line monitoring method for cable termination on-Line Monitor Device, electricity
Cable terminal on-Line Monitor Device includes degradation detector 2 and display device 4, and degradation detector 2 includes being set in cable termination
Current transformer 21, resistance 22, CPU23, clock 24, amplifier 25 on core 1, resistance 22 is with current transformer 21 by leading
Line is connected, and amplifier 25 is connected between resistance 22 and CPU23 by wire, and clock 24 is connected with CPU23 by wire, online
Monitoring method comprises at least following steps：
Signal detection step：Current signal on the core 1 of the detection cable terminal of current transformer 21, and pass through resistance 22
Voltage signal is converted into, electric current feelings on core 1 are may determine that by setting the step to obtain the voltage signal at the both ends of resistance 22
Condition, so as to judge the silica gel aging conditions of core 1；
Signal transacting step：Amplifier 25 amplifies voltage signal, by setting the faint voltage signal of the step
In the range of being amplified to CPU23 and can inputting, facilitate the conversion and contrast of follow-up data, while reduce measurement error, improve
The accuracy of on-line monitoring method detection；
Data collection steps：Voltage signal after CPU23 amplifies amplifier 25 is converted into magnitude of voltage, by setting the step
The rapid silica gel aging conditions for causing core 1 quantify, and facilitate staff to observe and judge, and facilitate the contrast of follow-up data；
Data displaying：Magnitude of voltage described in the real-time display of display device 4, by set step staff from
Voltage condition that can be with Real Time Observation to core 1 in display device 4, so as to which the aging feelings of cable termination silica gel be well understood
Condition, detected without having a power failure, reduce maintenance power off time, also mitigate the labor intensity of staff；
Send warning step：Preset voltage value is provided with CPU23, CPU23 carries out the magnitude of voltage and preset voltage value
Contrast, when magnitude of voltage is more than preset voltage value, clock 24 starts timing, the first preset time is provided with clock 24, when timing
Between when being more than the first preset time, judge that cable termination is in aging critical condition, CPU23 sends warning letter to display device 4
Number, by setting the step to reach the preventative purpose informed, premature failure early warning is advantageous to maintainer and changes cable in time
Terminal, avoids the damage of equipment, reduces the generation that cable short circuit such as burns at the security incident, by setting clock in the step,
The cable of cable termination is just judged as aging critical condition after keeping a period of time high pressure conditions, avoids other factors from causing voltage
Temporarily erroneous judgement caused by rise, improve the accuracy of on-line monitoring method early warning.In the present embodiment, predeterminated voltage 7V, first
Preset time is 40 minutes, suitable for the detection of the cable termination under most of environment.
The core of the cable termination of monitoring is provided with 3, is arranged with degradation detector 2 on every core, avoids solid wire
Core tracking is not detected, and improves the accuracy of cable termination on-Line Monitor Device testing result, while is easy to sentence
Disconnected aging position, alleviates the working strength of maintainer, shortens the repair time, reduces influence caused by aging.Every
Degradation detector 2 on core is fixed on core 1 by detector geometrical clamp 3 respectively, degradation detector 2 do not allow it is easy to fall off,
So that the use of cable termination on-Line Monitor Device is relatively reliable.
Degradation detector 2 also includes filter circuit 26, and signal transacting step also includes：Filter circuit 26 is by voltage signal
Interference signal filtered out, by setting the step to filter out interference signal, improve the accuracy of testing result so that online
The monitoring result of monitoring method is relatively reliable.
Degradation detector 2 also includes current sensor 27, and signal detection step also includes：Current sensor 27 detects core
Current signal on 1；Data collection steps also include：Current signal is converted into current value by CPU23；Data displaying is also wrapped
Include：Current value described in the real-time display of display device 4；When the voltage condition on core can not judge the aging feelings of cable termination silica gel
During condition, current conditions can be used for auxiliary judgment, meanwhile, it is recognized that short-circuit event whether occurs by the current conditions of core
Barrier, makes grasp of the staff to cable termination situation more comprehensive so that the monitoring of on-line monitoring method is more comprehensively reliable.
Sending warning step also includes：Pre-set current value is provided with CPU23, CPU23 is by the current value measured with presetting
Current value is contrasted, and when the current value measured is more than pre-set current value, judges that cable termination is in aging critical condition, CPU
Caution signal is sent to display device, further ensures that the silica gel aging conditions of cable termination can be with the very first time by staff
It was found that and go to replacing cable termination, avoid the damage of equipment, reduce the generation that cable short circuit such as burns at the security incident.This reality
Apply in example, pre-set current value 600A, suitable for the detection of the cable termination under most of environment.
Degradation detector 2 also includes temperature sensor 28, and signal detection step also includes：Temperature sensor 28 detects core
Temperature signal on 1；Data collection steps also include：Temperature signal is converted into temperature value by CPU23；Data displaying is also wrapped
Include：Temperature value described in the real-time display of display device 4, when the voltage condition on core can not judge the aging feelings of cable termination silica gel
During condition, the temperature conditions on core can be used for the silica gel aging conditions of auxiliary judgment cable termination, make staff to cable
The grasp of terminal situation is more comprehensive so that the monitoring of on-line monitoring method is more comprehensively reliable.
Sending warning step also includes：It is provided with preset temperature value in CPU23, CPU23 is by the temperature value and preset temperature
Value is contrasted, and when temperature value is more than preset temperature value, clock 24 starts timing, and the second preset time is provided with clock 24, when
When timing time is more than the second preset time, judge that cable termination is in aging critical condition, CPU23 is sent to display device 4
Caution signal, further ensuring that the silica gel aging conditions of cable termination can be found with the very first time by staff, and go to more
Cable termination is changed, avoids the damage of equipment, reduces the generation that cable short circuit such as burns at the security incident；Meanwhile pass through in the step
The preset time of clock setting second, just it is judged as the critical shape of aging after the cable of cable termination keeps a period of time condition of high temperature
State, other factors are avoided so that erroneous judgement caused by temperature temporarily raises, the accuracy of raising on-line monitoring method early warning.This implementation
In example, preset temperature value is 70 DEG C, and the second preset time is 30 minutes, suitable for the inspection of the cable termination under most of environment
Survey.
Cable termination on-Line Monitor Device also includes total current sensor 7 and magnetic conducting band 6, and magnetic conducting band 6 is set in cable 5
On, total current sensor 7 is electrically connected by magnetic conducting band 6 with cable 5, and signal detection step also includes：Total current sensor 7 detects
Total current signal on cable 5；Data collection steps also include：Total current signal is converted into total current value by CPU23；Data show
Show that step also includes：The real-time display total current value of display device 4, by measuring whether total surface of cable 5 has electric current by coming
Whether have aging phenomenon, the silica gel of cable 5 provides further protection to the core in cable if determining the silica gel of cable 5, if
There is aging phenomenon in the silica gel of cable, can accelerate the aging speed of core, therefore the silica gel aging phenomenon of cable is monitored can
To be further ensured that the safe to use of cable termination.Specifically, magnetic conducting band is silicon steel magnet ring, play a part of magnetic conduction.
Sending warning step also includes：Be provided with default total current value in CPU23, CPU23 by the total current value measured with
Default total current value is contrasted, and when the total current value measured is more than default total current value, judges that cable is in the critical shape of aging
State, CPU send caution signal to display device, reach the preventative purpose informed, premature failure early warning is advantageous to maintainer
Cable is changed in time, avoids the cable core aging in cable, reduces the generation that cable short circuit such as burns at the security incident.This implementation
In example, it is 7A to preset total current value, suitable for the detection of the cable termination under most of environment
On-line monitoring method also includes setting steps：Preset voltage value, predetermined current in the setting of display device 4 CPU23
Value, preset temperature value, the first preset time in default total current value and clock, the second preset temperature, by setting the step
So that the preset value in device can be changed by display device 4 so that the on-line monitoring method goes for different bars
Cable termination under part, expand the scope of application of on-line monitoring method.
In the present embodiment, current transformer is HCT215 type Verification of Measuring Current Transformer, the current transformer small volume, just
In installation, and measurement accuracy is high；Current sensor is；Temperature sensor is pt100 type temperature sensors, and the sensor uses
It is convenient, meet measurement demand and price is relatively low；Total current sensor 7 is JLT27I type AC current sensors, the alternating current
Sensor, small volume, in light weight, installation is more convenient.
It should be understood that the core quantity of cable termination can be 1,2,4,5,6 etc..
It should be understood that preset voltage value, the first preset time, the second preset time, preset temperature value, pre-set current value
It can be set according to being actually needed.
It should be understood that magnetic conducting band can also be beryllium Mo alloy magnet rings.
It should be understood that current sensor can also select other models, use demand only need to be met.
It should be understood that temperature sensor can also select other models, use demand only need to be met.
It should be understood that total current sensor can also select other models, use demand only need to be met.
Embodiment two：
As shown in figure 4, the present embodiment and the main distinction of embodiment one are, on-line monitoring method also includes communication step
Suddenly.
Cable termination on-Line Monitor Device also includes DTU, and on-line monitoring method includes following steps：
Signal detection step：Current signal on the core 1 of the detection cable terminal of current transformer 21, and pass through resistance 22
It is converted into voltage signal；Current sensor 27 detects the current signal on core；Temperature sensor 28 detects the temperature on core
Signal；Total current signal in the detection cable of total current sensor 7；
Signal transacting step：Amplifier 25 amplifies voltage signal, and filter circuit 26 is by the interference signal in voltage signal
Filtered out；
Data collection steps：Voltage signal after CPU23 amplifies amplifier 25 is converted into magnitude of voltage, turns current signal
Current value is turned to, temperature signal is converted into temperature value, total current signal is converted into total current value；
Data displaying：Magnitude of voltage, current value, temperature value, total current value described in the real-time display of display device 4；
Setting steps：Display device 4 sets preset voltage value in CPU23, pre-set current value, preset temperature value, default
The first preset time, the second preset temperature in total current value and clock；
Send warning step：Preset voltage value is provided with CPU23, CPU23 carries out the magnitude of voltage and preset voltage value
Contrast, when magnitude of voltage is more than preset voltage value, clock 24 starts timing, the first preset time is provided with clock 24, when timing
Between when being more than the first preset time, judge that cable termination is in aging critical condition, CPU23 sends warning letter to display device 4
Number；Pre-set current value is provided with CPU23, CPU is contrasted the current value with pre-set current value, and current value is more than default electricity
During flow valuve, CPU sends caution signal to display device；Preset temperature value is provided with CPU23, CPU23 is by the temperature value and in advance
If temperature value is contrasted, when temperature value is more than preset temperature value, clock 24 starts timing, when being preset in clock 24 provided with second
Between, when timing time is more than the second preset time, CPU sends caution signal to display device；Default total electricity is provided with CPU23
Flow valuve, CPU23 are contrasted the total current value and default total current value, when total current value is more than default total current value, CPU
Caution signal is sent to display device；
Communicating step：What DTU was connected mobile terminal by way of the wireless telecommunications such as ZigBee and showed display device 4
Content is sent to mobile terminal.By setting the step, staff can understand cable termination by mobile terminal remote
Situation, without being maked an inspection tour to scene, the labor intensity of staff is alleviated, while ensure that staff can look into real time
The situation of cable termination is seen, and the very first time receives caution signal, is advantageous to maintainer and changes cable termination in time, avoids setting
Standby damage, reduce the generation that cable short circuit such as burns at the security incident.
In the present embodiment, mobile terminal is the tablet personal computer of staff so that staff can be whole to cable in real time
The data at end are analyzed, and judge the aging conditions of the silica gel of cable termination, are also allowed for maintainer and are being received caution signal
The very first time rushes for scene and changes cable termination, avoids the damage of equipment, reduces the generation that cable short circuit such as burns at the security incident.
It should be understood that mobile terminal can also be the mobile phone of staff.
It should be understood that mobile terminal can also be the notebook computer of staff.
In addition to above preferred embodiment, the present invention also has other embodiments, and those skilled in the art can be according to this
Invention is variously modified and deformed, and without departing from the spirit of the present invention, all should belong to appended claims of the present invention and determine
The scope of justice.
Claims (10)
1. a kind of on-line monitoring method for cable termination on-Line Monitor Device, cable termination on-Line Monitor Device includes aging
Detector and display device, current transformer that degradation detector includes being set on cable termination, it is electrically connected with current transformer
Resistance, CPU, the amplifier between resistance and CPU and the clock electrically connected with CPU connect, it is characterised in that described online
Monitoring method comprises at least following steps：
Signal detection step：Current signal on the core of current transformer detection cable terminal, and electricity is converted into by resistance
Press signal；
Signal transacting step：Amplifier amplifies voltage signal；
Data collection steps：Voltage signal after CPU amplifies amplifier is converted into magnitude of voltage；
Data displaying：Magnitude of voltage described in display device real-time display；
Send warning step：Preset voltage value is provided with CPU, CPU is contrasted the magnitude of voltage with preset voltage value, voltage
When value is more than preset voltage value, clock starts timing, and the first preset time is provided with clock, is preset when timing time is more than first
During the time, CPU sends caution signal to display device.
2. on-line monitoring method according to claim 1, it is characterised in that the degradation detector also includes filtered electrical
Road, signal transacting step also include：Filter circuit is filtered out the interference signal in voltage signal.
3. on-line monitoring method according to claim 1, it is characterised in that the on-line monitoring method also includes setting step
Suddenly：Display device sets the first preset time in preset voltage value and clock in CPU.
4. on-line monitoring method according to claim 1, it is characterised in that the degradation detector also includes current sense
Device, signal detection step also include：Current signal on current sensor detection core；Data collection steps also include：CPU will
Current signal is converted into current value；Data displaying also includes：Current value described in display device real-time display.
5. on-line monitoring method according to claim 4, it is characterised in that the warning step that sends also includes：In CPU
Provided with pre-set current value, CPU is contrasted the current value with pre-set current value, when current value is more than pre-set current value, CPU
Caution signal is sent to display device.
6. on-line monitoring method according to claim 1, it is characterised in that the degradation detector also includes TEMP
Device, signal detection step also include：Temperature signal on temperature sensor detection core；Data collection steps also include：CPU will
Temperature signal is converted into temperature value；Data displaying also includes：Temperature value described in display device real-time display.
7. on-line monitoring method according to claim 6, it is characterised in that the warning step that sends also includes：In CPU
Provided with preset temperature value, CPU is contrasted the temperature value with preset temperature value, when temperature value is more than preset temperature value, when
Clock starts timing, and the second preset time is provided with clock, and when timing time is more than the second preset time, CPU is to display device
Send caution signal.
8. on-line monitoring method according to claim 1, it is characterised in that the cable termination on-Line Monitor Device is also wrapped
DTU is included, on-line monitoring method also includes communicating step：DTU is connected mobile terminal by way of wireless telecommunications and fills display
The content for putting display is sent to mobile terminal.
9. on-line monitoring method according to claim 1, it is characterised in that the cable termination on-Line Monitor Device is also wrapped
The total current sensor electrically connected with cable is included, signal detection step also includes：Total electricity in total current sensor detection cable
Flow signal；Data collection steps also include：Total current signal is converted into total current value by CPU；Data displaying also includes：It is aobvious
Total current value described in showing device real-time display.
10. on-line monitoring method according to claim 9, it is characterised in that the warning step that sends also includes：CPU
Interior to be provided with default total current value, CPU is contrasted the total current value and default total current value, and total current value is more than default total
During current value, CPU sends caution signal to display device.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375032A (en) * | 2018-09-15 | 2019-02-22 | 宁波高云电气有限公司 | A kind of management system of high-power high-capacity capacitor |
| CN109696119A (en) * | 2018-12-29 | 2019-04-30 | 福建华佳彩有限公司 | A kind of flexible screen bending prior-warning device and method for early warning |
| CN113671325A (en) * | 2021-08-18 | 2021-11-19 | 云南电网有限责任公司大理供电局 | Terminal partial discharge monitoring method and system based on high-frequency electric field change |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464488A (en) * | 2009-01-16 | 2009-06-24 | 上海慧东电气设备有限公司 | On-line monitoring system for high voltage cable |
| CN201732134U (en) * | 2010-06-12 | 2011-02-02 | 薛兆春 | Panel-type short-circuit and earth fault indicator with pre-alarm function |
| CN103364685A (en) * | 2013-07-22 | 2013-10-23 | 珠海创能科世摩电气科技有限公司 | Current temperature on-line fault indicator and method for judging fault |
| CN104991149A (en) * | 2015-08-06 | 2015-10-21 | 陕西古源电力科技有限公司 | Single core power cable online state monitoring device and method |
| CN206146997U (en) * | 2016-08-30 | 2017-05-03 | 浙江图维科技股份有限公司 | Integrated monitoring devices is put in cable electric current, conductor temperature , built -in office |
| CN106707082A (en) * | 2016-11-29 | 2017-05-24 | 浙江方大智控科技有限公司 | Electric leakage monitoring and alarming method and system |
| CN106950467A (en) * | 2017-03-06 | 2017-07-14 | 温州电力建设有限公司 | A kind of cable insulation situation on-line monitoring device |
-
2017
- 2017-09-18 CN CN201710842801.6A patent/CN107765116A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464488A (en) * | 2009-01-16 | 2009-06-24 | 上海慧东电气设备有限公司 | On-line monitoring system for high voltage cable |
| CN201732134U (en) * | 2010-06-12 | 2011-02-02 | 薛兆春 | Panel-type short-circuit and earth fault indicator with pre-alarm function |
| CN103364685A (en) * | 2013-07-22 | 2013-10-23 | 珠海创能科世摩电气科技有限公司 | Current temperature on-line fault indicator and method for judging fault |
| CN104991149A (en) * | 2015-08-06 | 2015-10-21 | 陕西古源电力科技有限公司 | Single core power cable online state monitoring device and method |
| CN206146997U (en) * | 2016-08-30 | 2017-05-03 | 浙江图维科技股份有限公司 | Integrated monitoring devices is put in cable electric current, conductor temperature , built -in office |
| CN106707082A (en) * | 2016-11-29 | 2017-05-24 | 浙江方大智控科技有限公司 | Electric leakage monitoring and alarming method and system |
| CN106950467A (en) * | 2017-03-06 | 2017-07-14 | 温州电力建设有限公司 | A kind of cable insulation situation on-line monitoring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375032A (en) * | 2018-09-15 | 2019-02-22 | 宁波高云电气有限公司 | A kind of management system of high-power high-capacity capacitor |
| CN109696119A (en) * | 2018-12-29 | 2019-04-30 | 福建华佳彩有限公司 | A kind of flexible screen bending prior-warning device and method for early warning |
| CN109696119B (en) * | 2018-12-29 | 2024-04-12 | 福建华佳彩有限公司 | Flexible screen bending early warning device and method |
| CN113671325A (en) * | 2021-08-18 | 2021-11-19 | 云南电网有限责任公司大理供电局 | Terminal partial discharge monitoring method and system based on high-frequency electric field change |
| CN113671325B (en) * | 2021-08-18 | 2022-10-11 | 云南电网有限责任公司大理供电局 | Terminal partial discharge monitoring method and system based on high-frequency electric field change |
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Effective date of registration: 20180524 Address after: 311501 66 Tonglu Road, Chengnan street, Tonglu County, Hangzhou, Zhejiang Applicant after: Zhejiang Baiyunyuan Electric Co., Ltd. Applicant after: STATE GRID ZHEJIANG TONGLU POWER SUPPLY COMPANY Applicant after: Fuzhou Ann Pu te Electric Co., Ltd. Applicant after: Ningbo central and Industrial Electric Co., Ltd. Applicant after: Hangzhou Wanhe Electric Power Technology Co., Ltd. Address before: 311501 66 Tonglu Road, Chengnan street, Tonglu County, Hangzhou, Zhejiang Applicant before: Zhejiang Baiyunyuan Electric Co., Ltd. Applicant before: STATE GRID ZHEJIANG TONGLU POWER SUPPLY COMPANY Applicant before: Ningbo central and Industrial Electric Co., Ltd. Applicant before: Hangzhou Wanhe Electric Power Technology Co., Ltd. |
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