CN209117064U - A kind of cable working-condition monitoring system - Google Patents
A kind of cable working-condition monitoring system Download PDFInfo
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- CN209117064U CN209117064U CN201821984097.4U CN201821984097U CN209117064U CN 209117064 U CN209117064 U CN 209117064U CN 201821984097 U CN201821984097 U CN 201821984097U CN 209117064 U CN209117064 U CN 209117064U
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Abstract
The utility model discloses a kind of cable working-condition monitoring systems, belong to cable monitoring technical field, it is therefore intended that overcome in the prior art to partial discharge location great work intensity, the defect of efficiency.Cable working-condition monitoring system includes base station and the terminal that connects with base station radio, wireless ultrasound sensor and wireless high-frequency current sensor are installed at the transition joint of cable, the wireless ultrasound sensor is all connected with the base station radio with wireless high-frequency current sensor, the crust close coupling of the wireless ultrasound sensor and transition joint, the wireless ultrasound sensor is used for high frequency partial discharge pulse detection for detecting Partial discharge signal, the wireless high-frequency current sensor.A kind of cable working-condition monitoring system provided by the utility model, can automatic collection Partial discharge signal to determine the position of partial discharge, it is high-efficient.
Description
Technical field
The utility model belongs to cable monitoring technical field, is related to a kind of cable working-condition monitoring system.
Background technique
Power cable is the important carrier of transmission and distribution electric energy, and usual cable laying is in cable duct, and in cable duct
Upper laying cover board is to protect cable extremely facility.Due to the concealment of cable duct and daily tour can not all standing, run shape
State is difficult to overall monitor, once the problem that breaks down, tends not to find in time, Precise Diagnosis is difficult to discovery and is determined
Position.Cable fault is serious to also result in cable duct fire in addition to causing cable itself to damage, because fire causes secondary cable to lose
Effect, causes the tripping and malfunction of relay protection device, and fault pervasion in turn results in the catastrophe failures such as device Errors tripping, tripping,
The serious consequence such as main transformer is even resulted in because losing protection due to explosion on fire, and generates life injury accident.Therefore, how to realize
The monitoring of cable full working scope state and Fault Quick Diagnosis positioning, shorten the repair time of failure, become everybody and become more concerned with
The problem of.
The method that cable duct operation at present mainly uses artificial periodical inspection needs to divulge information to cable tube ditch before tour, with
Exclude toxic and harmful gas, drain ponding, thus there are preparation time length, large labor intensity, danger source be more, timeliness
Difference makes an inspection tour the deficiencies of blind spot is more, is unable to satisfy the needs of modern distribution network cable operation management.
The failures such as partial discharge (shelf depreciation), partial breakdown small current neutral grounding, transition joint fever, breakdown easily occur for cable,
But service personnel is difficult to search and locate abort situation after failure, needs manually to check one by one, great work intensity, low efficiency, it is difficult to
Adapt to the requirement of current distribution operation management.
Summary of the invention
In view of the problems of the existing technology the utility model proposes a kind of cable working-condition monitoring system, it is therefore intended that overcome
In the prior art to partial discharge location great work intensity, the defect of efficiency.
The utility model is realized in this way:
A kind of cable working-condition monitoring system, which is characterized in that including base station and the terminal connected with base station radio, cable
Transition joint at wireless ultrasound sensor and wireless high-frequency current sensor be installed, the wireless ultrasound sensor and wireless high
Frequency current sensor is all connected with the base station radio, the crust close coupling of the wireless ultrasound sensor and transition joint, institute
It states wireless ultrasound sensor and is used for high frequency partial discharge pulse detection for detecting Partial discharge signal, the wireless high-frequency current sensor.
Preferably, the cable has multiple transition joints, and wireless ultrasound sensor is respectively mounted in multiple transition joints.
Preferably, the adjacent transition joint of wireless ultrasound sensor is installed at a distance of 30-50 meters.
Preferably, the wireless gas sensor of setting, radio temperature sensor, wireless temperature in the cable duct where the cable
Humidity sensor, wireless water sensor, wireless water level sensor and/or wireless cable shielded layer leakage current sensor, institute
There is sensor all to connect with base station radio.
A kind of cable working-condition monitoring system provided by the utility model, can automatic collection Partial discharge signal to determine partial discharge
Position, it is high-efficient.The office of cable intermediate joint is picked up using the close coupling wireless ultrasound sensor for being close to transition joint crust
Discharge signal, close coupling can effectively overcome the influence of ambient noise, while realize high frequency office using wireless high-frequency current sensor
Pulse detection is put, the signal of above two type is merged, the time should be completely coincident, and pulsewidth is also almost the same, to obtain out
The definite signal put.
Detailed description of the invention
Fig. 1 is that position view is arranged in wireless ultrasound sensor and invalid High Frequency Current Sensor in the utility model.
Attached drawing mark explanation: 100. cables, 110. transition joints, 200. wireless ultrasound sensors, 300. wireless high-frequencies electricity
Flow sensor.
Specific embodiment
Just attached drawing in conjunction with the embodiments below, is described in further detail specific embodiment of the present utility model, so that this
Utility model technical solution is more readily understood, grasps.It should be appreciated that specific embodiment described herein is only to explain this reality
With novel, it is not used to limit the utility model.
Present embodiments provide for a kind of cable working-condition monitoring systems, including base station and the end connected with base station radio
End.Base station include MCU, communication interface, 2.4GHz digital RF transceiver, wide input DC/DC D.C. regulated power supply, outside IP68ABS
Shell and antenna, two-channel wireless link constitute space diversity, improve the good reliability adaptive capacity to environment of data transmission.Wirelessly
Then data transmission base station passes through LoRa(low-power consumption for receiving, converging perimeter sensors information, the corresponding sensor of control
Remote spread spectrum communication) modes such as/GPRS/RS-485/ Ethernet/power carrier (support 101 agreements/104 agreements/customized
Agreement) wireless data information is forwarded to terminal, it can wirelessly upgrade itself program.
In the case where there is AC220V power supply at general power distribution station scene, power supply directly can be provided for base station.Distribution net looped network
Mostly outdoors, without reliable condition of power supply, and site environment is different from for the infields such as cabinet, switching station, cable duct.
To this situation, condition may be selected to take electric scheme using solar powered scheme or induction depending on the site environment.
Terminal can be the mobile terminal of Android system, for showing various sensor signals, partial discharge position etc..
As shown in Figure 1, installing wireless ultrasound sensor 200 and wireless high-frequency electric current biography at the transition joint 110 of cable 100
Sensor 300, wireless ultrasound sensor 200 are all connected with base station radio with wireless high-frequency current sensor 300, wireless ultrasound sensing
The crust close coupling of device 200 and transition joint 110, wireless ultrasound sensor 200 is for detecting Partial discharge signal, wireless high-frequency electric current
Sensor 300 is used for high frequency partial discharge pulse detection.It is picked up using the close coupling wireless ultrasound sensor for being close to 110 crust of transition joint
The Partial discharge signal of cable intermediate joint is taken, close coupling can effectively overcome the influence of ambient noise, while using wireless high-frequency electricity
Flow sensor realizes high frequency partial discharge pulse detection, merges the signal of above two type, and the time should be completely coincident, pulsewidth also base
This is consistent, to obtain the definite signal of partial discharge.
Cable 100 has multiple transition joints 110, is respectively mounted wireless ultrasound sensor in multiple transition joints 110
200, the signal of multiple transition joints 110 is merged, epoch and signal strength are compared, to position partial discharge position letter
Breath.The adjacent transition joint 110 of wireless ultrasound sensor 200 is installed at a distance of 30-50 meters, such as 30 meters, 40 meters, 50 meters.
The wireless gas sensor of setting in cable duct where cable, radio temperature sensor, wireless humiture sensor,
Wireless water sensor, wireless water level sensor and/or wireless cable shielded layer leakage current sensor, all the sensors all and
Base station radio connection.These sensors can make user realize that long-range data are acquired and monitored to site environment, greatly reduce
Artificial amount, prominent convenience, accuracy and real-time.
Wireless gas sensor can analyze the insulating materials vapour concentration in air can be with early warning cable fire.This
Embodiment is wireless, and gas sensor mainly uses infrared absorption gas sensor and electrochemical gas sensor.Infrared absorption gas
Fundamentals of Sensors are based on Lambert-Beer law, even irradiate infrared light to gas more than two molecules, then molecule is dynamic
It can change, absorb special wavelength light, this special wavelength light is determined by molecular structure, is differentiated by the absorption spectrum and is divided
Subcategory can measure gas concentration by the power absorbed.Infrared absorption gas sensor can detecte multiple gases, and have spirit
The advantages that sensitivity is high, gas-selectively is good, good reliability, fast response time.
Cable can often occur because leak or rain due to lead to water logging the case where, so that the safe operation to cable is brought
Hidden danger.Wireless water sensor can real time on-line monitoring sensor mounting location (place) whether soak (product) water, and it is real-time
Water logging information is uploaded into terminal by base station, to achieve the purpose that monitoring alarm.
Wireless water level sensor uses immersion static pressure water level sensor, using isolated form diffusion silicon pressure sensor, leads to
Cross hydrostatic principle measurement water level.
The weak current that wireless cable shielded layer leakage current sensor leaks cable skin is monitored on-line, will be acquired
To current data base station is transferred to by wireless sensor network technology, can prevent to leak electricity accident caused by because of leakage.
Claims (4)
1. a kind of cable working-condition monitoring system, which is characterized in that including base station and the terminal connected with base station radio, cable
(100) wireless ultrasound sensor (200) and wireless high-frequency current sensor (300), the nothing are installed at transition joint (110)
Line ultrasonic sensor (200) is all connected with the base station radio with wireless high-frequency current sensor (300), and the wireless ultrasound passes
The crust close coupling of sensor (200) and transition joint (110), the wireless ultrasound sensor (200) are used to detect Partial discharge signal,
The wireless high-frequency current sensor (300) is used for high frequency partial discharge pulse detection.
2. a kind of cable working-condition monitoring system according to claim 1, which is characterized in that the cable (100) has more
A transition joint (110), is respectively mounted wireless ultrasound sensor (200) on multiple transition joints (110).
3. a kind of cable working-condition monitoring system according to claim 2, which is characterized in that installation wireless ultrasound sensor
(200) adjacent transition joint is at a distance of 30-50 meters.
4. a kind of cable working-condition monitoring system according to claim 1, which is characterized in that the cable duct where the cable
It is interior that wireless gas sensor, radio temperature sensor, wireless humiture sensor, wireless water sensor, wireless water level are set
Sensor and/or wireless cable shielded layer leakage current sensor, all the sensors are all connected with base station radio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821984097.4U CN209117064U (en) | 2018-11-29 | 2018-11-29 | A kind of cable working-condition monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821984097.4U CN209117064U (en) | 2018-11-29 | 2018-11-29 | A kind of cable working-condition monitoring system |
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| Publication Number | Publication Date |
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| CN209117064U true CN209117064U (en) | 2019-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821984097.4U Active CN209117064U (en) | 2018-11-29 | 2018-11-29 | A kind of cable working-condition monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077421A (en) * | 2019-12-30 | 2020-04-28 | 云南恒协科技有限公司 | Intelligent operation and detection system for cable line |
| CN113049991A (en) * | 2021-03-24 | 2021-06-29 | 国网山东省电力公司泰安供电公司 | Distribution network line cable middle head running state monitoring system |
-
2018
- 2018-11-29 CN CN201821984097.4U patent/CN209117064U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077421A (en) * | 2019-12-30 | 2020-04-28 | 云南恒协科技有限公司 | Intelligent operation and detection system for cable line |
| CN113049991A (en) * | 2021-03-24 | 2021-06-29 | 国网山东省电力公司泰安供电公司 | Distribution network line cable middle head running state monitoring system |
| CN113049991B (en) * | 2021-03-24 | 2022-11-29 | 国网山东省电力公司泰安供电公司 | Distribution network line cable middle head running state monitoring system |
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