CN206772345U - A kind of cable tunnel inner cable running environment data collection station - Google Patents
A kind of cable tunnel inner cable running environment data collection station Download PDFInfo
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- CN206772345U CN206772345U CN201720400732.9U CN201720400732U CN206772345U CN 206772345 U CN206772345 U CN 206772345U CN 201720400732 U CN201720400732 U CN 201720400732U CN 206772345 U CN206772345 U CN 206772345U
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Abstract
The utility model discloses a kind of cable tunnel inner cable running environment data collection station, and it includes being arranged on cable local discharge signal supervisory instrument, the environmental detection set being arranged in cable tunnel, the data acquisition device with cable local discharge signal supervisory instrument and environmental detection set being connected respectively and the GPRS module being connected with data acquisition device at each joint location of cable tunnel inner cable.The utility model not only detects to the cable local discharge signal in cable tunnel and cable connector state parameter in several ways, but also the ambient parameter in cable tunnel is detected, the various parameters of collection are sent to the monitoring host computer of ground monitoring center by GPRS module by data acquisition device, so that monitoring personnel takes corresponding safeguard procedures in time according to the real-time condition in cable tunnel, improve the reliability and security of buried cable, it is ensured that the reliability and security of power supply.
Description
Technical field
A kind of cable tunnel inner cable running environment data collection station is the utility model is related to, belongs to electric power monitoring technology
Field.
Background technology
Realize that urban aerial circuit is laid with entering, influence of the power circuit to urban architecture can be reduced, can also save soil
Ground resource, it can above all improve the space environment in city, eliminate urban air pollution.With electric power networks and electricity consumption thing
The rapid development of industry, the safe operation to electric power networks and electricity consumption it is also proposed new requirement；Particularly underground power cable, its
Safe operation is also inevitably increasingly paid attention to security maintenance by power system.
Cable run is run in underground, is monitored and is safeguarded accordingly and be relatively difficult.Environment in cable duct, as humiture,
Water quality water level, pernicious gas etc., prevention prediction can not be accomplished on ground.City Buried Pipeline increases, the underground space
Occupying for resource makes the construction operation conditions of cable pipeline become increasingly complex, particularly natural gas, coal gas and other inflammable and explosive
Gas will bring great threat once penetrating into cable pipe trench to the safe operation of cable or even social public security.To ensure
The person and equipment safety, well lid need to be periodically turned on fuel gas detection is carried out to administration equipment.The external force of power cable is destroyed existing
As also more and more, gently then cause any property loss, heavy then cause security incident, the safe operation to cable causes a significant threat.
Therefore, the fire prevention of cable pipe trench, gas-tight, explosion-proof, waterproof, antitheft problem become more and more important, to meet that " five is anti-" of cable passage will
Ask, it is necessary to the running environment of cable is monitored, pinpointed the problems ahead of time, timely processing, avoids the generation of significant problem.
Utility model content
To overcome above-mentioned the shortcomings of the prior art, the purpose of this utility model is to provide in a kind of cable tunnel electric
Cable running environment data collection station, it can gather cable tunnel inner cable running environment Data Concurrent in real time and give ground
Monitoring center carries out unified monitoring and management.
Technical scheme is used by the utility model solves its technical problem：A kind of cable tunnel inner cable running environment
Data collection station, it is characterized in that：Including cable local discharge signal supervisory instrument, environmental detection set, data acquisition device
And GPRS module,
The cable local discharge signal supervisory instrument is arranged at each joint location of cable tunnel inner cable, for pair
The local discharge signal and connector status parameter of cable are detected；
The environmental detection set is arranged in cable tunnel, for being detected to the ambient parameter in cable tunnel；
The data acquisition device is connected with cable local discharge signal supervisory instrument and environmental detection set respectively, uses
Data acquisition is carried out in the cable local discharge signal, cable connector state parameter and ambient parameter to detecting；
The GPRS module is connected with data acquisition device, for the cable local discharge letter for gathering data acquisition device
Number, ambient parameter is sent to the monitoring host computer of ground monitoring center in cable connector state parameter and cable tunnel.
Preferably, the cable local discharge signal supervisory instrument includes sheath grounding current transformer, Current Voltage turns
Circuit, cable temperature sensor and the first a/d converter are changed, the sheath grounding current transformer is arranged on cable metal sheath
Ground wire on, to gather the earth current signal of metal sheath, the cable temperature sensor is close on cable, to
Gather cable temperature signal；The input of the current-to-voltage converting circuit connects with the secondary terminals of sheath grounding current transformer
Connect, output end is connected with the input of the first a/d converter, and the input of first a/d converter also senses with cable temperature
Device is connected, and the output end of the first a/d converter is connected with data acquisition device.Described sheath grounding current transformer uses magnetic
The current transformer of ray crystal structure, cable local discharge signal supervisory instrument include at least three sheath grounding current transformer
With at least three temperature sensor 3, described at least three sheath grounding current transformer and at least three temperature sensor are to right
The metal sheath of every cable carries out grounding monitor.
Preferably, the cable local discharge signal supervisory instrument includes high frequency sensors, high-speed signal acquisition unit, low
Video sensor, low speed signal collecting unit and FPGA, the output ends of the high frequency sensors are defeated with high-speed signal acquisition unit
Enter end to be connected, the output end of the low-frequency sensor is connected with the input of low speed signal collecting unit, and the high speed signal is adopted
The input of collection unit and low speed signal collecting unit is connected with FPGA signal input part respectively, the signal output of the FPGA
End is connected with data acquisition device；
The high frequency sensors use HFCT sensors, for receiving local discharge signal and being sent to high-speed signal acquisition
Unit, the low-frequency sensor use Rogowski coil, for receiving current synchronous signal and being sent to low speed signal collecting unit,
Described high-speed signal acquisition unit and low speed signal collecting unit respectively send local discharge signal and current synchronous signal
To FPGA, local discharge signal and current synchronous signal are sent to data acquisition device by the FPGA.
Preferably, the high-speed signal acquisition unit include the first signal conditioner, high-speed a/d converter and high ratio compared with
Device, the output end of the HFCT sensors are connected with the input of the first signal conditioner, the output end of the first signal conditioner
It is connected respectively by high-speed a/d converter and high-speed comparator with FPGA signal input part；The low speed signal collecting unit
Including secondary signal conditioner and low-speed a/d converter, the output end of the Rogowski coil and the input of secondary signal conditioner
End is connected, and the output end of secondary signal conditioner is connected by low-speed a/d converter with FPGA signal input part.
Preferably, the cable local discharge signal supervisory instrument includes active RFID card, ultrasonic sensor and cable
Connector temperature sensor；The active RFID card is arranged on joint；The RFID card is used to send signal for data acquisition
Device determines joint location according to the intensity of the signal；The ultrasonic sensor is arranged at cable connector, for detecting
Joint discharge current size and location；The temperature of cable junction sensor is arranged at cable connector, for detection tabs
Temperature.
Preferably, the environmental detection set includes Temperature Humidity Sensor, gas sensor, smoke alarm and water level biography
Sensor, for being examined to the humiture in cable tunnel, target detection gas concentration, smokescope value and water level ambient parameter
Survey；
The Temperature Humidity Sensor is fixedly mounted in the side wall of the cable tunnel, and close to the well of the cable tunnel
Lid is set；The gas sensor includes toxic gas sensor and combustible gas sensor, the toxic gas sensor and
The combustible gas sensor is mounted side by side and is fixed on the top of the cable tunnel；The level sensor is that throw-in type is quiet
Fluid level transmitter is pressed, the throwing static pressure liquid level transmitter includes sensor probe and transmitter, and the sensor probe is set
Put and be arranged on the side wall of the cable tunnel in the bottom of the cable tunnel, the transmitter.
Preferably, the data acquisition device includes processor and RS232 interface, and the processor uses model
STM32FA07VCT6 microprocessor, processor are connected by RS232 interface with GPRS module.
The beneficial effects of the utility model are：
After lift structure, the utility model is not only believed the cable local discharge in cable tunnel in several ways
Number and cable connector state parameter detected, but also the ambient parameter in cable tunnel is detected, data acquisition dress
Put and sent out ambient parameter in the cable local discharge signal, cable connector state parameter and cable tunnel of collection by GPRS module
The monitoring host computer of ground monitoring center is given, so that monitoring personnel is taken accordingly in time according to the real-time condition in cable tunnel
Safeguard procedures, so as to improve the reliability of buried cable and security, and then ensure the reliability and security of power supply.
The utility model detects the shelf depreciation of underground power cable by cable local discharge signal supervisory instrument in real time
Signal, prevents the generation of hidden trouble of cable safety, not only eliminates the trouble that tester repeatedly descends cable tunnel to go test, solves
Time for being tested during existing portable test operation is short, inconvenient and unsafe problem, and ensure that the people of related personnel
Body safety；The metal sheath electric current of buried cable is monitored by cable local discharge signal supervisory instrument, can be timely
The defects of accurately finding earthed system at cable connector, you can the running status of monitoring cable in real time, prevent cable insulation thing
Therefore generation, it is ensured that the reliable and stable operation of Voltage Cable Lines Construction.By cable local discharge signal supervisory instrument to underground
The state parameter of the joint of cable is detected, and effectively recognizes the overheat occurred due to the aging of cable connector and fire thing
Therefore hidden danger, the early prediction ability of the excessively thermally-induced fire of cable is improved, strong guarantee is provided for the safe operation of field apparatus.
The utility model is monitored using various sensors to the environment in cable tunnel, can not only be to cable tunnel
Interior various environmental parameters are acquired, and provide powerful guarantee for electric power transport and worker safety, and be easy in monitoring
The heart grasps the running environment situation of cable in real time, when occurring abnormal, realizes alarm, reminds staff to fix a breakdown in time,
Prevent big potential safety hazard.
In addition, the field data of collection is sent to by data acquisition unit of the present utility model by GPRS wireless networks in real time
Monitoring host computer, the labor intensity of in-site measurement is significantly reduced, improves operating efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the first cable local discharge signal supervisory instrument of the present utility model；
Fig. 3 is the electrical block diagram of current-to-voltage converting circuit in Fig. 2；
Fig. 4 is the structural representation of second of cable local discharge signal supervisory instrument of the present utility model；
Fig. 5 is the structural representation of the third cable local discharge signal supervisory instrument of the present utility model.
Embodiment
In order to simplify disclosure of the present utility model, hereinafter the part and setting of specific examples are described.It should note
Meaning, part illustrated in the accompanying drawings are not drawn necessarily to scale.The utility model is eliminated to known assemblies and treatment technology
And the description of technique is to avoid being unnecessarily limiting the utility model.
As shown in Figures 1 to 5, a kind of cable tunnel inner cable running environment data collection station of the present utility model, it
Including cable local discharge signal supervisory instrument, environmental detection set, data acquisition device and GPRS module；The cable is local
Discharge signal detection means is arranged at each joint location of cable tunnel inner cable, for the local discharge signal to cable and
Connector status parameter is detected；The environmental detection set is arranged in cable tunnel, for the environment in cable tunnel
Parameter is detected；The data acquisition device is connected with cable local discharge signal supervisory instrument and environmental detection set respectively
Connect, for carrying out data acquisition to the cable local discharge signal, cable connector state parameter and ambient parameter that detect；It is described
GPRS module is connected with data acquisition device, for cable local discharge signal, the cable connector for gathering data acquisition device
Ambient parameter is sent to the monitoring host computer of ground monitoring center in state parameter and cable tunnel.
As shown in Fig. 2 the first cable local discharge signal supervisory instrument described in the utility model is grounded including sheath
Current transformer, current-to-voltage converting circuit, cable temperature sensor and the first a/d converter, the sheath grounding current mutual inductance
Device is arranged on the ground wire of cable metal sheath, and to gather the earth current signal of metal sheath, the cable temperature passes
Sensor is close on cable, to gather cable temperature signal；The input of the current-to-voltage converting circuit is grounded with sheath
The secondary terminals connection of current transformer, output end is connected with the input of the first a/d converter, first a/d converter it is defeated
Enter end to be also connected with cable temperature sensor, the output end of the first a/d converter is connected with data acquisition device.Described sheath
Earth current transformer uses the current transformer of magneto-optical crystal structure, and cable local discharge signal supervisory instrument includes at least 3
Individual sheath grounding current transformer and at least three temperature sensor 3, described at least three sheath grounding current transformer and extremely
Few 3 temperature sensors are to the metal sheath progress grounding monitor to every cable.As shown in figure 3, the Current Voltage turns
Circuit is changed to be made up of five resistance, an electric capacity and voltage comparator UA741.
The utility model detects the office of underground power cable by the first cable local discharge signal supervisory instrument in real time
Portion's discharge signal, prevents the generation of hidden trouble of cable safety, not only eliminates the fiber crops that tester repeatedly descends cable tunnel to go test
It is tired, solve that the time tested during existing portable test operation is short, inconvenient and unsafe problem, and ensure that relevant people
The personal safety of member.
As shown in figure 4, second of cable local discharge signal supervisory instrument described in the utility model includes high frequency sensing
Device, high-speed signal acquisition unit, low-frequency sensor, low speed signal collecting unit and FPGA, the output end of the high frequency sensors
It is connected with the input of high-speed signal acquisition unit, the output end of the low-frequency sensor and the input of low speed signal collecting unit
End is connected, the input of the high-speed signal acquisition unit and low speed signal collecting unit signal input part phase with FPGA respectively
Even, the signal output part of the FPGA is connected with data acquisition device；
The high frequency sensors use HFCT sensors, for receiving local discharge signal and being sent to high-speed signal acquisition
Unit, the low-frequency sensor use Rogowski coil, for receiving current synchronous signal and being sent to low speed signal collecting unit,
Described high-speed signal acquisition unit and low speed signal collecting unit respectively send local discharge signal and current synchronous signal
To FPGA, local discharge signal and current synchronous signal are sent to data acquisition device by the FPGA.
Preferably, the high-speed signal acquisition unit include the first signal conditioner, high-speed a/d converter and high ratio compared with
Device, the output end of the HFCT sensors are connected with the input of the first signal conditioner, the output end of the first signal conditioner
It is connected respectively by high-speed a/d converter and high-speed comparator with FPGA signal input part；The low speed signal collecting unit
Including secondary signal conditioner and low-speed a/d converter, the output end of the Rogowski coil and the input of secondary signal conditioner
End is connected, and the output end of secondary signal conditioner is connected by low-speed a/d converter with FPGA signal input part.
Metal sheath electric current of the utility model by second of cable local discharge signal supervisory instrument to buried cable
It is monitored, at discovery cable connector that can be promptly and accurately the defects of earthed system, you can the operation shape of monitoring cable in real time
State, prevent the generation of cable insulation accident, it is ensured that the reliable and stable operation of Voltage Cable Lines Construction.
As shown in figure 5, the third cable local discharge signal supervisory instrument described in the utility model includes active RFID
Card, ultrasonic sensor and temperature of cable junction sensor；The active RFID card is arranged on joint；The RFID card is used for
Signal is sent so that data acquisition device determines joint location according to the intensity of the signal；The ultrasonic sensor is arranged on
At cable connector, for detection tabs discharge current size and location；The temperature of cable junction sensor is arranged on cable and connect
At head, the temperature for detection tabs.
The third cable local discharge signal supervisory instrument includes active RFID card (not showing in Fig. 5), housing 31, ultrasonic wave
Sensor 32 and temperature sensor 33.Active RFID is used to send signal, so that handheld terminal is along the progress of ground
When inspection scans, the signal that RFID card is sent can be received, and the particular location of joint is determined according to the signal.Ultrasonic wave passes
Sensor 32 and temperature sensor 33 are fixed on the joint of buried cable by housing 31.Ultrasonic sensor 32 receives cable
Ultrasonic wave caused by shelf depreciation inside joint, thus detect the size and location of shelf depreciation.This method can avoid electricity
It the influence of magnetic disturbance, can easily position, on-line checking can be achieved.Temperature sensor 33 is detected by the RTD of contact
The temperature change of buried cable transition joint, effectively recognize the overheat and fire incident occurred due to the aging of cable connector
Hidden danger, the early prediction ability of the excessively thermally-induced fire of cable is improved, strong guarantee is provided for the safe operation of field apparatus.This reality
The state parameter of the joint of buried cable is detected by the third cable local discharge signal supervisory instrument with new, had
The overheat and fire incident hidden danger that the identification of effect ground occurs due to the aging of cable connector, improve the morning of the excessively thermally-induced fire of cable
Phase predictive ability, strong guarantee is provided for the safe operation of field apparatus.
Preferably, the environmental detection set includes Temperature Humidity Sensor, gas sensor, smoke alarm and water level biography
Sensor, for being examined to the humiture in cable tunnel, target detection gas concentration, smokescope value and water level ambient parameter
Survey；
The Temperature Humidity Sensor is fixedly mounted in the side wall of the cable tunnel, and close to the well of the cable tunnel
Lid is set；The gas sensor includes toxic gas sensor and combustible gas sensor, the toxic gas sensor and
The combustible gas sensor is mounted side by side and is fixed on the top of the cable tunnel；The level sensor is that throw-in type is quiet
Fluid level transmitter is pressed, the throwing static pressure liquid level transmitter includes sensor probe and transmitter, and the sensor probe is set
Put and be arranged on the side wall of the cable tunnel in the bottom of the cable tunnel, the transmitter.Level sensor is using input
Formula static pressure liquid level transmitter detects tunnel internal water accumulation water level, prevents cable immersion operation for a long time, improves the operation longevity of cable
Life and power supply reliability；The principle that it is in ratio based on surveyed ponding static pressure and its height that throwing static pressure liquid level transmitter, which is, is adopted
With the piezoresistive effect of isolated form diffusion silicon-sensitive element, static pressure is converted into electric signal, then corrected by temperature-compensating with linear,
Be converted to standard electric signal.
The utility model is monitored using various sensors to the environment in cable tunnel, can not only be to cable tunnel
Interior various environmental parameters are acquired, and provide powerful guarantee for electric power transport and worker safety, and be easy in monitoring
The heart grasps the running environment situation of cable in real time, when occurring abnormal, realizes alarm, reminds staff to fix a breakdown in time,
Prevent big potential safety hazard.
Preferably, the data acquisition device includes processor and RS232 interface, and the processor uses model
STM32FA07VCT6 microprocessor, processor are connected by RS232 interface with GPRS module.Data of the present utility model are adopted
The field data of collection is sent to monitoring host computer by storage by GPRS wireless networks in real time, significantly reduces the labor of in-site measurement
Fatigue resistance, improve operating efficiency.
In the utility model, a/d converter selects AD7894AR-10 analog/digital conversion chips, and AD7894AR-10 is a low
Power consumption, low cost, high performance quick 14 A/D converters, powered using 5V single supplies, built-in 1 gradual approaching/
Sample/hold amplifier, 1 piece internal clock and 1 HSSI High-Speed Serial Interface in number converter, 1 piece.
The utility model is not only in several ways to the cable local discharge signal and cable connector shape in cable tunnel
State parameter is detected, but also the ambient parameter in cable tunnel is detected, and data acquisition device passes through GPRS module
Ambient parameter in the cable local discharge signal, cable connector state parameter and cable tunnel of collection is sent in monitoring on the ground
The monitoring host computer of the heart, so that monitoring personnel takes corresponding safeguard procedures in time according to the real-time condition in cable tunnel, so as to
The reliability and security of buried cable are improved, and then ensures the reliability and security of power supply.
Simply preferred embodiment of the present utility model described above, comes for those skilled in the art
Say, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also by
It is considered as the scope of protection of the utility model.
Claims (7)
1. a kind of cable tunnel inner cable running environment data collection station, it is characterized in that：Examined including cable local discharge signal
Device, environmental detection set, data acquisition device and GPRS module are surveyed,
The cable local discharge signal supervisory instrument is arranged at each joint location of cable tunnel inner cable, for cable
Local discharge signal and connector status parameter detected；
The environmental detection set is arranged in cable tunnel, for being detected to the ambient parameter in cable tunnel；
The data acquisition device is connected with cable local discharge signal supervisory instrument and environmental detection set respectively, for pair
Cable local discharge signal, cable connector state parameter and the ambient parameter detected carries out data acquisition；
The GPRS module is connected with data acquisition device, for data acquisition device is gathered cable local discharge signal,
Ambient parameter is sent to the monitoring host computer of ground monitoring center in cable connector state parameter and cable tunnel.
2. a kind of cable tunnel inner cable running environment data collection station according to claim 1, it is characterized in that：It is described
Cable local discharge signal supervisory instrument includes sheath grounding current transformer, current-to-voltage converting circuit, cable temperature sensing
Device and the first a/d converter, the sheath grounding current transformer is arranged on the ground wire of cable metal sheath, to gather
The earth current signal of metal sheath, the cable temperature sensor are close on cable, to gather cable temperature signal；Institute
The input for stating current-to-voltage converting circuit is connected with the secondary terminals of sheath grounding current transformer, output end and the first AD conversion
The input connection of device, the input of first a/d converter are also connected with cable temperature sensor, the first a/d converter
Output end is connected with data acquisition device.
3. a kind of cable tunnel inner cable running environment data collection station according to claim 1, it is characterized in that：It is described
Cable local discharge signal supervisory instrument includes high frequency sensors, high-speed signal acquisition unit, low-frequency sensor, low speed signal and adopted
Collection unit and FPGA, the output end of the high frequency sensors are connected with the input of high-speed signal acquisition unit, and the low frequency passes
The output end of sensor is connected with the input of low speed signal collecting unit, high-speed signal acquisition unit and the low speed signal collection
The input of unit is connected with FPGA signal input part respectively, signal output part and the data acquisition device phase of the FPGA
Even；
The high frequency sensors use HFCT sensors, for receiving local discharge signal and being sent to high-speed signal acquisition list
Member, the low-frequency sensor use Rogowski coil, for receiving current synchronous signal and being sent to low speed signal collecting unit, institute
Local discharge signal and current synchronous signal are sent to by the high-speed signal acquisition unit and low speed signal collecting unit stated respectively
Local discharge signal and current synchronous signal are sent to data acquisition device by FPGA, the FPGA.
4. a kind of cable tunnel inner cable running environment data collection station according to claim 3, it is characterized in that：It is described
High-speed signal acquisition unit includes the first signal conditioner, high-speed a/d converter and high-speed comparator, the HFCT sensors
Output end is connected with the input of the first signal conditioner, and the output end of the first signal conditioner is changed by high-speed a/d respectively
Device and high-speed comparator are connected with FPGA signal input part；The low speed signal collecting unit include secondary signal conditioner and
Low-speed a/d converter, the output end of the Rogowski coil are connected with the input of secondary signal conditioner, secondary signal conditioner
Output end be connected by low-speed a/d converter with FPGA signal input part.
5. a kind of cable tunnel inner cable running environment data collection station according to claim 1, it is characterized in that：It is described
Cable local discharge signal supervisory instrument includes active RFID card, ultrasonic sensor and temperature of cable junction sensor；It is described
Active RFID card is arranged on joint；The RFID card is used to send signal so that data acquisition device is according to the strong of the signal
Degree determines joint location；The ultrasonic sensor is arranged at cable connector, for detection tabs discharge current size and position
Put；The temperature of cable junction sensor is arranged at cable connector, the temperature for detection tabs.
6. a kind of cable tunnel inner cable running environment data collection station according to claim 1, it is characterized in that：It is described
Environmental detection set includes Temperature Humidity Sensor, gas sensor, smoke alarm and level sensor, for cable tunnel
Interior humiture, target detection gas concentration, smokescope value and water level ambient parameter is detected；
The Temperature Humidity Sensor is fixedly mounted in the side wall of the cable tunnel, and the well lid close to the cable tunnel is set
Put；The gas sensor includes toxic gas sensor and combustible gas sensor, the toxic gas sensor and described
Combustible gas sensor is mounted side by side and is fixed on the top of the cable tunnel；The level sensor is throwing static pressure liquid
Position transmitter, the throwing static pressure liquid level transmitter include sensor probe and transmitter, and the sensor probe is arranged on
The bottom of the cable tunnel, the transmitter are arranged on the side wall of the cable tunnel.
7. a kind of cable tunnel inner cable running environment data collection station according to claim 1 to 6 any one, its
It is characterized in：The data acquisition device includes processor and RS232 interface, and the processor uses model
STM32FA07VCT6 microprocessor, processor are connected by RS232 interface with GPRS module.
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| CN109450898A (en) * | 2018-11-09 | 2019-03-08 | 国网河北省电力有限公司石家庄供电分公司 | Electric power tunnel informationization intelligent management system and method |
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| CN109000739A (en) * | 2018-10-18 | 2018-12-14 | 国网山西省电力公司太原供电公司 | A kind of underground electric pipe network data acquisition device |
| CN109660021A (en) * | 2018-11-09 | 2019-04-19 | 国网河北省电力有限公司石家庄供电分公司 | Electric power tunnel on-line monitoring system and monitoring method |
| CN109450898A (en) * | 2018-11-09 | 2019-03-08 | 国网河北省电力有限公司石家庄供电分公司 | Electric power tunnel informationization intelligent management system and method |
| CN109631986A (en) * | 2018-12-03 | 2019-04-16 | 国网浙江省电力有限公司电力科学研究院 | A kind of cable and its monitoring of working condition early warning system |
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| CN109870196A (en) * | 2019-03-29 | 2019-06-11 | 山东呈祥电气有限公司 | A kind of intelligent online detection pipe-line system |
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| CN111810186A (en) * | 2020-06-30 | 2020-10-23 | 华北水利水电大学 | Tunnel section arrangement system with motor vehicle and non-motor vehicle coexisting and control method |
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