CN109375069A - A kind of end insulation characterisitic on-Line Monitor Device and method - Google Patents
A kind of end insulation characterisitic on-Line Monitor Device and method Download PDFInfo
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- CN109375069A CN109375069A CN201811129721.7A CN201811129721A CN109375069A CN 109375069 A CN109375069 A CN 109375069A CN 201811129721 A CN201811129721 A CN 201811129721A CN 109375069 A CN109375069 A CN 109375069A
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- insulation characterisitic
- temperature
- module
- monitor device
- line monitor
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of end insulation characterisitic on-Line Monitor Device and method, described device includes: to receive terminal and the temperature measurement module with the reception terminal communication connection；The reception terminal includes microprocessor, and environment temperature detection module is also connected on the microprocessor；The microprocessor acquires end hull-skin temperature by temperature measurement module in real time, and calculates end temperature rise, and the environment temperature of combining environmental temperature detecting module output and preset insulation characterisitic decision condition carry out the judgement of end insulation characterisitic.The present invention acquires cable connector surface temperature in real time, is assessed according to end surface temperature rise and environment temperature, preset insulation characterisitic decision condition end insulation characterisitic, can accurately and timely find its potential faults, helps to reduce breakdown loss.
Description
Technical field
The present invention relates to a kind of end insulation characterisitic on-Line Monitor Device and methods, belong to electric power monitoring technical field.
Background technique
It is analyzed according to the AUTHORITATIVE DATA of power industry, the failure of the switchgear 90% of all-inflation and all-insulation is due to inlet-outlet line electricity
Caused by the poor contact of cable junction, main cause is that Field Force does not install in strict accordance with the standard operation of cable,
Since mounted cable can not detect the reliability of installation again, so cause installation place contact unreliable, contact portion when operation
The allowed band for dividing temperature rise to exceed national regulation, so that cable terminal insulation aging, discharges and cause singlephase earth fault or phase
Between the accidents such as short circuit.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of end insulation characterisitic on-line monitoring dress is provided
It sets and method, it being capable of real time on-line monitoring cable insulation characteristic.
In order to achieve the above objectives, the present invention is achieved by the following technical scheme:
In a first aspect, the present invention provides a kind of end insulation characterisitic on-Line Monitor Device, including receive terminal and with
The temperature measurement module for receiving terminal communication connection；
The reception terminal includes microprocessor, and environment temperature detection module is also connected on the microprocessor；
The microprocessor acquires end hull-skin temperature by temperature measurement module in real time, and calculates end temperature rise, ties
The environment temperature of cyclization border temperature detecting module output and preset insulation characterisitic decision condition carry out end insulation characterisitic and sentence
It is disconnected.
Second aspect, the present invention provides a kind of end insulation characterisitic on-line monitoring methods, include the following steps:
Monitored end hull-skin temperature is acquired in real time and calculates the temperature rise of end outer surface；
Judge that end insulation is special according to the temperature rise of end outer surface, environment temperature and preset insulation characterisitic decision condition
Property.
To sum up, end insulation characterisitic on-Line Monitor Device and method provided by the present invention, acquire cable connector in real time
Surface temperature, according to end surface temperature rise and environment temperature, preset insulation characterisitic decision condition to end insulation characterisitic
It is assessed, can accurately and timely find its potential faults, help to reduce breakdown loss.
Detailed description of the invention
Fig. 1 is the structural schematic block diagram of end insulation characterisitic on-Line Monitor Device provided in an embodiment of the present invention.
Specific embodiment
A kind of end insulation characterisitic on-Line Monitor Device and method proposed by the present invention acquire cable connector surface in real time
Temperature assesses cable elbow-shaped head insulation characterisitic according to elbow-type end surface temperature rise and environment temperature, can it is accurate and
When find its potential faults, facilitate reduce breakdown loss.
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
End insulation characterisitic on-Line Monitor Device provided in an embodiment of the present invention passes through the temperature that is mounted on end
Sensor real-time detection end surface temperature data is simultaneously uploaded to reception terminal, receives terminal according to cable head surface temperature number
According to and environment temperature analyzed and judged, abnormal data information is sent to data monitoring center when abnormal.As shown in Figure 1,
It is the structural schematic block diagram of end insulation characterisitic on-Line Monitor Device provided in an embodiment of the present invention.The device includes:
Temperature measurement module: it is used for real-time detection cable head surface temperature；
Receive terminal: for calculating end surface temperature rise according to end surface temperature, and combining environmental temperature and pre-
If insulation characterisitic decision condition carry out the judgement of end insulation characterisitic；
Data monitoring center: communicating to connect with the reception terminal, for realizing long-range monitoring.When end insulation characterisitic
When deteriorating, output receives terminal and exports warning message to data monitoring center.
Wherein, temperature measurement module includes:
Temperature sensor: being installed on table outside end by rubber watchband, be used for detection cable head surface temperature, can be with
It is arranged simultaneously multiple；
Wireless sending module: the end surface temperature information for acquiring temperature sensor is transmitted to reception terminal；
CT takes power supply module: for powering for wireless sending module, temperature sensor, comprising: electricity taking coil and iron core,
In on end, electricity taking coil is wound on iron core iron core winding as secondary coil, and cable passes through electromagnetism as primary coil
Induction obtains electric current, powers for wireless sending module.CT takes power supply module to take electricity using small bore CT, and the electric section CT is taken to be less than
15 square millimeters, starting current is less than 8A.
Wherein, receiving terminal includes:
Microprocessor: for calculating end surface temperature rise, and combining environmental temperature and preset insulation characterisitic determine item
Part carries out the judgement of end insulation characterisitic；
Wireless receiving module: matching with the wireless sending module, for end surface temperature information to be transmitted to
Microprocessor；The radio frequency transceiving module of low-power consumption 433MHz can be used；
Environment temperature detection module: for detecting environment temperature；
Man-machine interactive system: shown for realizing parameter setting, parameter, determine as the result is shown, the man-machine friendship such as warning note
Mutual function；Touch screen can be used；
Power supply module: for being microprocessor power supply；
Memory module: it is stored for data；
Without source contact output module: as one of microprocessor and the optional communication module of data monitoring center, being used for will
Monitoring information including abnormal data information is sent to data monitoring center；Specially wired no source contact output module；
Wireless communication module: as one of microprocessor and the optional communication module of data monitoring center, can with it is passive
The spare module of contact output module can also equally be used for realizing the two-way communication of microprocessor and data monitoring center
In the monitoring information including abnormal data information is sent to data monitoring center.
The present invention also provides a kind of end insulation characterisitic on-line monitoring method, this method can use device above-mentioned
It realizes, specifically comprises the following steps:
Monitored end hull-skin temperature is acquired in real time and calculates the temperature rise of end outer surface；
Judge that end insulation is special according to the temperature rise of end outer surface, environment temperature and preset insulation characterisitic decision condition
Property, when end temperature rise is excessively high, then it is assumed that there are electric discharge phenomena for the end, so cable head temperature is just caused to increase, cable
Head insulation characterisitic reduces.
Preset insulation characterisitic decision condition specifically includes:
If meeting following three conditions simultaneously, determine that end insulation characterisitic deteriorates:
1. any two-phase temperature rise difference of three-phase electricity cable end is greater than 5 DEG C；
2. any phase temperature is higher than 5 DEG C of environment temperature or more in three-phase electricity cable end；
3. end service life is higher than 5 years.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of end insulation characterisitic on-Line Monitor Device, which is characterized in that including receive terminal and with the reception terminal
The temperature measurement module of communication connection；
The reception terminal includes microprocessor, and environment temperature detection module is also connected on the microprocessor；
The microprocessor acquires end hull-skin temperature by temperature measurement module in real time, and calculates end temperature rise, coupling collar
The environment temperature of border temperature detecting module output and preset insulation characterisitic decision condition carry out the judgement of end insulation characterisitic.
2. end insulation characterisitic on-Line Monitor Device according to claim 1, which is characterized in that the temperature measurement module packet
It includes: wireless sending module and the temperature sensor for detection cable head surface temperature information；
The reception terminal further includes the wireless receiving module to match with the wireless sending module, and the microprocessor passes through
Wireless receiving module obtains end surface temperature information.
3. end insulation characterisitic on-Line Monitor Device according to claim 2, which is characterized in that the temperature measurement module is also
Including for taking power supply module for the CT of wireless sending module and temperature sensor power supply.
4. end insulation characterisitic on-Line Monitor Device according to claim 3, which is characterized in that the CT takes power supply
Module takes the electric section CT less than 15 square millimeters, and starting current is less than 8A.
5. end insulation characterisitic on-Line Monitor Device according to claim 1, which is characterized in that the temperature sensor
End outer surface is installed on by rubber watchband.
6. end insulation characterisitic on-Line Monitor Device according to claim 1, which is characterized in that described device further includes
Data monitoring center, the reception terminal and data monitoring center communicate to connect.
7. end insulation characterisitic on-Line Monitor Device according to claim 6, which is characterized in that the reception terminal is logical
It crosses wired no source contact output module and/or wireless communication module and the data monitoring center communicates to connect.
8. a kind of end insulation characterisitic on-line monitoring method, which comprises the steps of:
Monitored end hull-skin temperature is acquired in real time and calculates the temperature rise of end outer surface；
End insulation characterisitic is judged according to the temperature rise of end outer surface, environment temperature and preset insulation characterisitic decision condition.
9. end insulation characterisitic on-line monitoring method according to claim 8, which is characterized in that preset insulation characterisitic
Decision condition includes:
If meeting following three conditions simultaneously, determine that end insulation characterisitic deteriorates:
1. any two-phase temperature rise difference of three-phase electricity cable end is greater than 5 DEG C；
2. any phase temperature is higher than 5 DEG C of environment temperature or more in three-phase electricity cable end；
3. end service life is higher than 5 years.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811129721.7A CN109375069A (en) | 2018-09-27 | 2018-09-27 | A kind of end insulation characterisitic on-Line Monitor Device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811129721.7A CN109375069A (en) | 2018-09-27 | 2018-09-27 | A kind of end insulation characterisitic on-Line Monitor Device and method |
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| CN109375069A true CN109375069A (en) | 2019-02-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160481A (en) * | 2019-04-26 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of measurement method and device of cable insulation damaged area |
| CN110988612A (en) * | 2019-11-08 | 2020-04-10 | 广东电网有限责任公司 | Cable head insulation performance online monitoring system and method |
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| WO2008113142A2 (en) * | 2007-03-20 | 2008-09-25 | Eduardo Pedrosa Santos | Real-time monitoring system for capacitance graded bushings |
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| CN110160481A (en) * | 2019-04-26 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of measurement method and device of cable insulation damaged area |
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| CN110988612A (en) * | 2019-11-08 | 2020-04-10 | 广东电网有限责任公司 | Cable head insulation performance online monitoring system and method |
| CN110988612B (en) * | 2019-11-08 | 2021-07-20 | 广东电网有限责任公司 | Cable head insulation performance online monitoring system and method |
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Application publication date: 20190222 |
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