CN110690763A - Intelligent monitoring device and monitoring method for electric power system - Google Patents
Intelligent monitoring device and monitoring method for electric power system Download PDFInfo
- Publication number
- CN110690763A CN110690763A CN201911106915.XA CN201911106915A CN110690763A CN 110690763 A CN110690763 A CN 110690763A CN 201911106915 A CN201911106915 A CN 201911106915A CN 110690763 A CN110690763 A CN 110690763A
- Authority
- CN
- China
- Prior art keywords
- data
- sensor
- signal
- monitoring device
- acquisition front
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an intelligent monitoring device and a monitoring method for an electric power system, wherein the device comprises: the system comprises a signal acquisition front end, a signal processing system, a central main control system, a data storage unit, a network unit and a power management unit; wherein the signal acquisition front end comprises: split type partial discharge sensor, ambient humidity sensor, ambient temperature sensor. The advantages are that: the device can further reduce the complexity of the system brought by multiple sensors under the condition of realizing the online monitoring of the multidimensional physical quantity of the power system equipment, and can greatly reduce the equipment investment cost and the product cost; compared with the method of singly adopting a plurality of on-line monitoring systems, the method adopts a multi-sensor integrated design, can simultaneously obtain a plurality of sensor data, can be more accurate, and thoroughly avoids the major hidden danger that the data of different systems are mutually taken from the main server, so that the long time is caused, and the prejudgment can not be carried out in the early stage of the fault, thereby greatly reducing the risk of the fault occurrence in the power distribution room.
Description
Technical Field
The invention relates to the field of power systems, in particular to an intelligent monitoring device and a monitoring method for a power system.
Background
Along with the rapid development of the economy of China, the power industry is also rapidly developed, wherein the requirements on power distribution equipment are also continuously improved. From initial manual inspection to the installation of a large number of sensors and intelligent equipment, and the assistance of manual regular inspection, the intelligent level is gradually improved, but the sensors applied at present are various, are inconvenient for centralized management, and have higher requirements on the human participation degree in monitoring. From the result, if the abnormity cannot be found and eliminated in time, the fault is caused, not only the transformer substation suffers huge loss, but also the electricity utilization user is greatly damaged.
The traditional personnel regular inspection or single online monitoring system is adopted as a large data acquisition mode for operation and maintenance of the smart power grid, the technical problems that the workload of personnel is huge, the accuracy of data is low, a large amount of data information acquired by each independent system cannot be effectively fused mutually and the like can be caused, the problems of high product cost and high investment cost are faced simultaneously, and data of each independent system can not be comprehensively diagnosed when forming a data island.
Traditional online monitoring in the market today relies on manpower more, requires operators to insist on monitoring for a long time, and has the situation of false alarm. Due to the limitation of videos, if a user wants to judge which specific region needs to be checked by field workers, the monitoring efficiency is low, and certain potential safety hazards are also caused.
Disclosure of Invention
The invention aims to provide an intelligent monitoring device and a monitoring method for an electric power system, wherein the device adopts the synergistic effect of multiple sensors, and can further reduce the complexity of the system caused by the multiple sensors under the condition of realizing the online monitoring of the multidimensional physical quantity of electric power system equipment, thereby greatly reducing the equipment investment cost and the product cost; the device can acquire various sensor data simultaneously, can be more accurate, and thoroughly avoids the major hidden danger that different system data are mutually taken from the master server to cause overlong time and cannot be pre-judged in the early stage of the fault, thereby greatly reducing the risk of the fault occurrence of the power system.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an intelligent monitoring device for an electric power system, the device comprising:
the signal acquisition front end is used for collecting and sending signals and is arranged in the power system;
the signal processing system is used for analog-to-digital conversion and signal modulation, is connected with the signal acquisition front end, receives signal data sent by the signal acquisition front end, and modulates, processes and sends the signal data;
the central main control system receives the modulated signal data sent by the signal processing system and carries out analysis processing;
the data storage unit is used for storing data and receiving, storing and transmitting the analyzed and processed signal data transmitted by the central main control system;
the network unit is used for receiving the data sent by the data storage unit and transmitting the data to a data receiving end to carry out integral power dispatching command;
the power supply management unit is used for providing power for each component in the intelligent monitoring device;
wherein the signal acquisition front end comprises:
the split type partial discharge sensor is connected with the signal processing system;
the environment humidity sensor is connected with the signal processing system;
and the environment temperature sensor is connected with the signal processing system.
Preferably, the central main control system comprises a big data analysis module and an AI processing module, the central main control system performs intrusion detection, foreign object recognition and analysis processing on the received modulated and processed signal data in combination with the big data analysis module and the AI processing module, and when the analyzed and processed signal data exceeds a predetermined threshold, an alarm instruction of the central main control system is triggered and transmitted to the data receiving end through the network unit.
Preferably, the split partial discharge sensor is a contact partial discharge sensor or a non-contact partial discharge sensor.
Preferably, the signal acquisition front end further comprises:
and the infrared sensor is connected with the signal processing system and is also in communication connection with the environment humidity sensor and the environment temperature sensor respectively.
Preferably, the signal acquisition front end further comprises:
and the sound sensor is used for monitoring abnormal sounds and is connected with the signal processing system, and the sound sensor comprises a sound intelligent identification system.
Preferably, the signal acquisition front end further comprises:
and the odor sensor is connected with the signal processing system.
Preferably, the signal acquisition front end further comprises:
and the visible light sensor is connected with the signal processing system.
Preferably, the signal acquisition front end further comprises:
and the image sensor is connected with the signal processing system and comprises an intelligent image recognition system.
Preferably, the signal processing system is connected with the signal acquisition front end in a communication mode or through a wire.
Preferably, a method for performing intelligent monitoring by using the intelligent monitoring device for an electric power system comprises the following steps:
s1, after the power management unit supplies power, the central main control system and the signal processing system are initialized;
s2, simultaneously or respectively acquiring the sensors at the front end of signal acquisition to obtain the corresponding sensor data, requesting the sensor data at the front end of signal acquisition by the signal processing system, modulating the sensor data, and uploading the modulated sensor data to the central main control system;
s3, the central main control system analyzes and processes the received modulated sensor data, sends the analysis and processing result to the data storage unit, and triggers the alarm instruction of the central main control system when the analysis and processing result exceeds a preset threshold value and transmits the alarm instruction to the data receiving end through the network unit;
and S4, the data storage unit stores all the received data and sends the data to the data receiving end through the network unit to carry out overall power dispatching command.
Compared with the prior art, the invention has the following advantages:
(1) the intelligent monitoring device of the power system adopts the combination and the cooperation of a plurality of sensors to continuously and automatically monitor and alarm the devices in the power system for a long time, compared with the traditional single online monitoring terminal, the intelligent monitoring device of the power system can further reduce the complexity of the system caused by the plurality of sensors under the condition of realizing the online monitoring of the multidimensional physical quantity of the power system equipment, and can greatly reduce the equipment investment cost and the product cost;
(2) compared with the single adoption of a plurality of online monitoring systems, the intelligent monitoring device for the power system adopts a multi-sensor integrated design, can simultaneously acquire data of a plurality of sensors, ensures that the monitoring data is more accurate due to the mutual cooperation of the sensors, thoroughly avoids the major hidden danger that the data of different systems are mutually taken from a main server, is too long and cannot be pre-judged in the early stage of the fault, and can greatly reduce the risk of the fault of the power system;
(3) the intelligent monitoring device of the power system improves the integration level of monitoring equipment, improves the efficiency of data synchronization, expands the use scenes, reduces the difficulty of field wiring and reduces the requirement on manual inspection.
Drawings
FIG. 1 is a schematic diagram of the main components of an intelligent monitoring device for an electrical power system according to the present invention;
fig. 2 is a schematic structural diagram of an intelligent monitoring device of an electric power system according to the present invention.
Detailed Description
The present invention will now be further described by way of the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.
As shown in fig. 1 and fig. 2, the present invention is an intelligent monitoring device for an electric power system, the device includes: the signal acquisition front end is used for collecting and sending signals and comprises a plurality of sensors for collecting various signal data, and each sensor is arranged in the power system; the signal processing system is used for analog-to-digital conversion and signal modulation, is connected with the signal acquisition front end, receives signal data sent by the signal acquisition front end, and modulates, processes and sends the signal data; a central main control system 600 for receiving the modulated signal data sent by the signal processing system and analyzing and processing the modulated signal data; a data storage unit 800 for storing data, which receives, stores and transmits the analyzed and processed signal data transmitted by the central main control system 600; the network unit 400 receives the data sent by the data storage unit 800, and transmits the data to a data receiving end to perform overall power dispatching command; and the power supply management unit is used for providing power for each component in the intelligent monitoring device. The network unit 400 is a WiFi wireless, 4G communication module or ethernet, etc. Various sensors at the front end of the signal acquisition are used for acquiring data of the multi-dimensional physical quantity at the same moment, and different acquisition modes can be set according to requirements.
The central main control system 600 includes a big data analysis module, performs analysis processing on the received modulation signal in combination with the big data module, and when the analyzed and processed data exceeds a predetermined threshold, triggers an alarm instruction of the central main control system 600 and transmits the alarm instruction to the data demander through the network unit 400, where the predetermined threshold (alarm threshold) may be dynamically configured according to the field characteristics.
The central main control system 600 analyzes and processes the signal data of the sensor through the big data analysis module and the AI processing module, thereby improving the accuracy of the analysis result. In the big data analysis module, the data of various sensors are analyzed and processed transversely and longitudinally, so that the success rate of abnormal recognition can be improved in multiple dimensions. And the AI processing module is mainly used for realizing abnormal sound identification, foreign matter intrusion detection and foreign matter identification, and forming an alarm instruction when monitoring abnormality.
Additionally, the signal acquisition front end comprises: the system comprises a split type partial discharge sensor 300, an ambient humidity sensor 910 for monitoring the on-site humidity and an ambient temperature sensor 900 for monitoring the on-site temperature, wherein the sensors are respectively connected with the signal processing system. The split partial discharge sensor 300 may be a contact partial discharge sensor or a non-contact partial discharge sensor.
A partial discharge sensor (i.e., a partial discharge sensor) is a sensor capable of detecting a partial discharge phenomenon, and is currently widely used for GIS (insulated switchgear) partial discharge detection, cable partial discharge monitoring, and the like. The partial discharge sensor mainly comprises ultrahigh frequency partial discharge, ultrasonic partial discharge and the like. Ultra High Frequency (UHF) is a new detection technology for partial discharge of power equipment developed in recent years, and has the characteristic of strong anti-interference capability.
In the embodiment, a split ultrahigh frequency partial discharge sensor is adopted, and ultrahigh frequency electromagnetic wave signals with the frequency band of 300-3000 MHz radiated from the interior of live equipment such as a high-voltage cable and the like are collected nearby to perform detection and analysis of partial discharge. The inside of the high-voltage cable in operation is generally protected by a plurality of insulating materials in a ring shape, and the insulating strength and the breakdown field strength of the high-voltage cable are high. When the electrified equipment is abnormal, partial discharge in a very small range can be generated, the gas breakdown process is fast, a very steep pulse signal is generated, ultrahigh frequency electromagnetic waves are radiated to the periphery, and the split ultrahigh frequency partial discharge sensor can detect the change of the partial discharge signal. The split type partial discharge sensor is used for collecting the radiated UHF signal, the signal is transmitted to a signal processing system for analog-to-digital conversion and signal modulation, data such as a discharge peak value, a discharge point mean value, a discharge frequency and the like are obtained after preliminary amplification, filtering and digitization, and then the data are uploaded to a data storage unit 800 for comprehensive storage. The split type partial discharge sensor adopted by the invention can further obtain more accurate partial discharge signals. The split type partial discharge and signal processing system is connected through an RS232 serial communication interface or an RS485 serial communication interface, the split type partial discharge sensor is closer to a monitored device in the electronic system and even can be tied to certain electrified devices, namely, the split type partial discharge sensor is a contact type partial discharge sensor, has higher precision, can be installed and maintained in an electrified mode under certain conditions, and has extremely high accuracy.
Along with the change of weather and climate, the temperature and humidity of the environment can change, and then the test precision of each sensor in the monitoring device is influenced. The temperature and the humidity of monitoring environment can monitor the state of environment, and the temperature value and the humidity value of environment are passed to signal processing system or other sensors, and then improve the degree of accuracy of other sensors.
In addition, the signal acquisition front end further comprises: and the sound sensor 100 is used for monitoring the abnormal sound on site and is connected with the signal processing system, and the sound sensor 100 comprises a sound intelligent identification system. Abnormal discharge of the monitored equipment generally produces abnormal sound. The sound sensor 100 collects sound, and workers at the data receiving end judge the field environment by combining the sound with other sensor data, so that the identification effect of field abnormal phenomena is improved.
The signal acquisition front end still contains infrared sensor 200, with signal processing system connects, infrared sensor 200 still respectively with ambient humidity sensor 910 with ambient temperature sensor 900 communication connection. The infrared sensor 200 is an infrared temperature sensor, and can accurately obtain temperature values of various points on the surface of the monitored equipment and form a thermal image. According to the field requirement, the high-precision infrared sensor 200 can be selected, and the common infrared sensor 200 can also be selected.
If the environment where the power system is located is in an over-temperature state for a long time, short circuit or even fire of equipment of the power system is easily caused. Most of the currently used infrared sensors 200 support input of ambient temperature and humidity for precise accuracy. The ambient humidity sensor 910 and the ambient temperature sensor 900 may transmit the detected ambient humidity and temperature information to the infrared sensor 200, thereby improving the effectiveness of the infrared sensor 200 in monitoring the target temperature state and avoiding safety accidents.
The rated voltage of the equipment in the power system basically belongs to the class of high voltage and even ultrahigh voltage, and the operation process of the equipment is accompanied by the change of temperature. According to the invention, the infrared sensor 200 is adopted to acquire infrared radiation information emitted from power equipment such as a capacitor, a reactor and a cable, so as to judge the equipment condition and defect property. Any high pressure point equipment external fault defect, cable joint connect bad and when the trouble, reflect through temperature variation very easily, internal fault defect also can be according to equipment inner structure, running state, fault point heat transfer formation, and the heat can be passed to the equipment outside, reflects through temperature variation. The infrared thermal imaging technology is utilized to measure the surface temperature of main equipment in the switch cabinet of the transformer substation, the temperature distribution of the equipment can be reflected, and the method is very effective in early defect finding, defect point position judgment and defect reason analysis.
When the electrified equipment is abnormal, heat is accumulated along with abnormal heating, and short circuit and fire are easy to occur. The temperature data obtained by the infrared sensor 200 can monitor the temperature of the monitored equipment, and alarm when the temperature reaches a preset threshold value, so that the condition is avoided. The infrared temperature threshold of the monitored equipment needs to be set according to the characteristics of the monitored object and the ' infrared diagnosis application specification for charged equipment DL/T664-2016 ' of the power industry standard of the people's republic of China.
The signal acquisition front end further comprises: and the visible light sensor and the image sensor 700 are respectively connected with the signal processing system, and the image sensor 700 comprises an image intelligent recognition system. The visible light is a very intuitive field observation mode, and the image sensor 700 is a sensor having a visible light imaging function, such as an industrial camera. The image sensor 700 can collect images and videos on site for workers at a data receiving end to check, and generally requires more than 400w pixels in order to ensure the imaging effect.
In addition, the signal acquisition front end also includes an odor sensor 500, which is connected to the signal processing system. The odor sensor 500 can collect odors at the analysis site, such as identifying ozone, burnt odor, etc.
The invention also discloses a method for carrying out intelligent monitoring by adopting the intelligent monitoring device of the power system, which comprises the following steps:
s1, after the power management unit supplies power, the central main control system 600 and the signal processing system are initialized;
s2, simultaneously or respectively acquiring the sensors at the signal acquisition front end to obtain the corresponding sensor data, requesting the sensor data at the signal acquisition front end by the signal processing system, modulating the sensor data and uploading the modulated sensor data to the central main control system 600;
s3, the central main control system 600 analyzes the received modulated sensor data, sends the analysis result to the data storage unit 800, and when the analysis result exceeds a predetermined threshold, triggers an alarm command of the central main control system 600 and transmits the alarm command to the data receiving end through the network unit 400;
s4, the data storage unit 800 stores all the received data and sends the data to the data receiving end through the network unit 400 for overall power dispatching command.
In summary, compared with the traditional single online monitoring terminal, the intelligent monitoring device for the power system can further reduce the complexity of the system caused by multiple sensors and greatly reduce the equipment investment cost and the product cost under the condition of realizing online monitoring of the multidimensional physical quantity of the power system equipment; compared with the method of singly adopting a plurality of on-line monitoring systems, the method adopts a multi-sensor integrated design, can simultaneously obtain a plurality of sensor data, can be more accurate, and thoroughly avoids the major hidden trouble that the data of different systems are mutually taken from the main server, so that the time is too long, and the prejudgment cannot be carried out in the early stage of the fault, thereby greatly reducing the risk of the fault occurrence in the power system.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. An intelligent monitoring device for an electric power system, the device comprising:
the signal acquisition front end is used for collecting and sending signals and is arranged in the power system;
the signal processing system is used for analog-to-digital conversion and signal modulation, is connected with the signal acquisition front end, receives signal data sent by the signal acquisition front end, and modulates, processes and sends the signal data;
the central main control system (600) receives the modulated signal data sent by the signal processing system and analyzes and processes the modulated signal data;
the data storage unit (800) is used for storing data, and receiving, storing and transmitting the analyzed and processed signal data transmitted by the central main control system (600);
the network unit (400) receives the data sent by the data storage unit (800), and transmits the data to a data receiving end to carry out overall power dispatching command;
the power supply management unit is used for providing power for each component in the intelligent monitoring device;
wherein the signal acquisition front end comprises:
a split partial discharge sensor (300) connected to the signal processing system;
an ambient humidity sensor (910) coupled to the signal processing system;
an ambient temperature sensor (900) connected to the signal processing system.
2. The intelligent monitoring device for power system as claimed in claim 1,
the central main control system (600) comprises a big data analysis module and an AI processing module, the central main control system (600) performs intrusion detection, foreign matter identification and analysis processing on received modulated signal data by combining the big data analysis module and the AI processing module, and when the analyzed signal data exceed a preset threshold value, an alarm instruction of the central main control system (600) is triggered and transmitted to a data receiving end through the network unit (400).
3. The intelligent monitoring device for power system as claimed in claim 1,
the split type partial discharge sensor (300) is a contact type partial discharge sensor or a non-contact type partial discharge sensor.
4. The intelligent monitoring device of claim 1, wherein the signal acquisition front end further comprises:
the infrared sensor (200) is connected with the signal processing system, and the infrared sensor (200) is also respectively in communication connection with the environment humidity sensor (910) and the environment temperature sensor (900).
5. The intelligent monitoring device of claim 1, wherein the signal acquisition front end further comprises:
and the sound sensor (100) is used for monitoring abnormal sounds and is connected with the signal processing system, and the sound sensor (100) comprises a sound intelligent identification system.
6. The intelligent monitoring device of claim 1, wherein the signal acquisition front end further comprises:
an odor sensor (500) connected to the signal processing system.
7. The intelligent monitoring device of claim 1, wherein the signal acquisition front end further comprises:
and the visible light sensor is connected with the signal processing system.
8. The intelligent monitoring device of claim 1, wherein the signal acquisition front end further comprises:
the image sensor (700) is connected with the signal processing system, and the image sensor (700) comprises an image intelligent recognition system.
9. The intelligent monitoring device of an electric power system according to claim 1, characterized in that:
the signal processing system is in communication connection with the signal acquisition front end or is connected with the signal acquisition front end through a wire.
10. A method for intelligent monitoring by using the intelligent monitoring device for power system as claimed in claims 1-9, the method comprising the steps of:
s1, after the power management unit supplies power, the central main control system (600) and the signal processing system are initialized;
s2, simultaneously or respectively acquiring the sensors at the signal acquisition front end to obtain the corresponding sensor data, requesting the sensor data at the signal acquisition front end by the signal processing system, modulating the sensor data, and uploading the modulated sensor data to the central main control system (600);
s3, the central main control system (600) analyzes and processes the received modulated sensor data, sends the analysis and processing result to the data storage unit (800), and triggers an alarm instruction of the central main control system (600) when the analysis and processing result exceeds a preset threshold value and transmits the alarm instruction to the data receiving end through the network unit (400);
and S4, the data storage unit (800) stores all the received data and sends the data to the data receiving end through the network unit (400) to carry out overall power dispatching command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106915.XA CN110690763A (en) | 2019-11-13 | 2019-11-13 | Intelligent monitoring device and monitoring method for electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106915.XA CN110690763A (en) | 2019-11-13 | 2019-11-13 | Intelligent monitoring device and monitoring method for electric power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110690763A true CN110690763A (en) | 2020-01-14 |
Family
ID=69116540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911106915.XA Pending CN110690763A (en) | 2019-11-13 | 2019-11-13 | Intelligent monitoring device and monitoring method for electric power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110690763A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308283A (en) * | 2020-01-16 | 2020-06-19 | 成都工百利自动化设备有限公司 | Multifunctional switch cabinet working state sensor and early warning method |
| CN111352773A (en) * | 2020-02-28 | 2020-06-30 | 佛山科学技术学院 | Cloud computing server monitoring control method and system based on big data |
| CN111405640A (en) * | 2020-03-09 | 2020-07-10 | 上海迈内能源科技有限公司 | Low-power-consumption wireless networking communication method |
| CN111769522A (en) * | 2020-07-10 | 2020-10-13 | 国网江苏省电力有限公司 | Multi-monitoring non-delay arc-extinguishing integrated protection method |
| CN114071256A (en) * | 2021-11-15 | 2022-02-18 | 国网湖南省电力有限公司 | Partial discharge monitoring device suitable for ring net cage |
| CN114459532A (en) * | 2021-12-10 | 2022-05-10 | 国网河南省电力公司漯河供电公司 | Passive wireless partial discharge and temperature and humidity composite sensing monitoring system |
-
2019
- 2019-11-13 CN CN201911106915.XA patent/CN110690763A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308283A (en) * | 2020-01-16 | 2020-06-19 | 成都工百利自动化设备有限公司 | Multifunctional switch cabinet working state sensor and early warning method |
| CN111352773A (en) * | 2020-02-28 | 2020-06-30 | 佛山科学技术学院 | Cloud computing server monitoring control method and system based on big data |
| CN111405640A (en) * | 2020-03-09 | 2020-07-10 | 上海迈内能源科技有限公司 | Low-power-consumption wireless networking communication method |
| CN111405640B (en) * | 2020-03-09 | 2022-01-04 | 上海迈内能源科技有限公司 | Low-power-consumption wireless networking communication method |
| CN111769522A (en) * | 2020-07-10 | 2020-10-13 | 国网江苏省电力有限公司 | Multi-monitoring non-delay arc-extinguishing integrated protection method |
| CN114071256A (en) * | 2021-11-15 | 2022-02-18 | 国网湖南省电力有限公司 | Partial discharge monitoring device suitable for ring net cage |
| CN114459532A (en) * | 2021-12-10 | 2022-05-10 | 国网河南省电力公司漯河供电公司 | Passive wireless partial discharge and temperature and humidity composite sensing monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110690763A (en) | Intelligent monitoring device and monitoring method for electric power system | |
| CN210629196U (en) | Intelligent monitoring device for electric power system | |
| CN104990629B (en) | A kind of electrical equipment fault automatic early-warning system of infrared imaging temperature measuring | |
| CN103698674A (en) | Flow cable partial discharge online monitoring system | |
| CN214622883U (en) | Multi-parameter online partial discharge monitoring equipment installed inside switch cabinet | |
| CN104977087B (en) | A kind of method of the electrical equipment fault automatic early-warning based on infrared imaging temperature measuring | |
| CN104502759A (en) | Intelligent monitoring system of distribution network switch cabinet | |
| CN108986420A (en) | A kind of power distribution cabinet monitoring alarm system | |
| CN105758526A (en) | Unmanned plane device with function of giving alarm against overheating of high-voltage equipment, and application method | |
| CN203984091U (en) | High-voltage switch gear infrared thermal imaging on-line monitoring integrated treatment unit | |
| CN212162721U (en) | Intelligent bus duct | |
| CN206848743U (en) | A kind of high-tension switch cabinet wireless temperature detects warning system | |
| CN219018540U (en) | Multi-dimensional state detection equipment for switch cabinet | |
| CN106841946A (en) | A kind of combined local discharge of electrical equipment live detection equipment | |
| CN104267321A (en) | GIS state monitoring device based on Zigbee wireless networking | |
| CN110728709B (en) | Intelligent switch identification system and method based on binocular vision technology | |
| CN111337080A (en) | Distribution transformer state on-line measuring system | |
| CN206531919U (en) | A kind of combined local discharge of electrical equipment live detection equipment | |
| CN116488343B (en) | Intelligent power equipment safety monitoring system and method based on Internet of things | |
| CN205642646U (en) | High tension switchgear temperature -detecting device based on wireless transmission | |
| CN203839271U (en) | Vacuum degree online detecting device | |
| CN209310844U (en) | A kind of switch cabinet state monitoring device | |
| CN211626718U (en) | Passive wireless switchgear temperature monitoring equipment of cubical switchboard | |
| CN214795080U (en) | Switch cabinet insulation state comprehensive monitoring system | |
| CN211669313U (en) | Switch cabinet monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |