CN218181008U - Partial discharge on-line monitoring device based on composite sensor - Google Patents
Partial discharge on-line monitoring device based on composite sensor Download PDFInfo
- Publication number
- CN218181008U CN218181008U CN202221146371.7U CN202221146371U CN218181008U CN 218181008 U CN218181008 U CN 218181008U CN 202221146371 U CN202221146371 U CN 202221146371U CN 218181008 U CN218181008 U CN 218181008U
- Authority
- CN
- China
- Prior art keywords
- module
- sensor
- composite sensor
- partial discharge
- monitoring device
- 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.)
- Active
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a partial discharge on-line monitoring device based on a composite sensor, which comprises an integrated sensor acquisition device, a concentrator, a master station and a client mobile phone/flat plate end; the integrated sensor acquisition device is connected with the concentrator through a wireless network; the concentrator is connected with the master station through R485; and the master station is connected with the client mobile phone/tablet terminal through a wireless network. The utility model discloses simple structure integrates polymorphic type sensor, and adopt magnetism to inhale the formula mounting means, the installation is simple and convenient, can put in the office of multiple power equipment of simultaneous measurement, it is nimble, convenient to use, realized that multichannel sensing collection passageway gathers the combination collection that also can realize single or arbitrary sensing passageway simultaneously, through wireless and wired mixed network deployment realization to the insulating state real-time supervision of cubical switchboard equipment, this system can conveniently, monitor power equipment safely.
Description
Technical Field
The utility model belongs to the technical field of the insulating detection of power equipment, concretely relates to partial discharge on-line monitoring device based on composite sensor.
Background
Since the 50 s of the 20 th century, the electric power public utilities of China have been developed rapidly, and by the end of the 20 th century, the installed capacity of the electric power system of China has exceeded 14000 thousands of kilowatts, and the annual energy generation amount is also at the top of the world. While the voltage level of the power system in China is continuously increased, people pay more and more attention to the safe and stable operation of the power system. Serious electrical equipment failure not only can cause large-scale power failure to bring inconvenience to life of people, but also can bring great loss to national economy.
The research and application of the ubiquitous power internet of things technology become particularly important. Miniaturization and networking are the main development directions of sensors, and the sensors are deployed on equipment to acquire equipment state information in real time. And the wireless communication technology is utilized to transmit the state information to a monitoring center in real time, comprehensive analysis and visual display are carried out on the massive state data of the equipment, and finally, the intelligent online monitoring of the partial discharge is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the wired monitoring mode of current electrical equipment exists, a partial discharge on-line monitoring device based on composite sensor is provided.
In order to realize the purpose, the technical scheme of the utility model is as follows:
a partial discharge on-line monitoring device based on a composite sensor comprises an integrated sensor acquisition device, a concentrator, a master station and a client mobile phone/flat plate end; the integrated sensor acquisition device is connected with the concentrator through a wireless network; the concentrator is connected with the master station through RS 485; and the master station is connected with the client mobile phone/tablet computer end through a wireless network.
As a further explanation of the present invention, the above-mentioned integrated sensor collecting device mainly comprises a rectangular metal casing, a composite sensor, a signal conditioning module and a main control module; the composite sensor is arranged at the front end of the rectangular metal shell; the signal conditioning module and the main control module are arranged in the rectangular metal shell; the output end of the composite sensor is connected with the input end of the signal conditioning module; and the output end of the signal conditioning module is connected with the main control module.
As a further explanation of the present invention, the above-mentioned composite sensor is composed of an ultrahigh frequency sensor, a geoelectric wave sensor, an ultrasonic sensor and a temperature sensor. The detection frequency range is 300-1500 MHz when the ultrahigh frequency sensor is designed; the ultrasonic sensor adopts a piezoelectric crystal structure, and the resonant frequency of the ultrasonic sensor is 40kHz and is arranged in the sensing device; the ground electric wave sensor adopts a monopole antenna; the temperature sensor is Si7021; the composite sensor is connected with the signal conditioning module in a bus mode.
As a further explanation of the present invention, the signal conditioning module includes a filter circuit unit, a gain switching circuit unit, a frequency band switching circuit unit, a signal detection circuit unit, an operational amplifier circuit unit, an AD conversion circuit unit, and a power module; and the signal conditioning module is used for carrying out analog signal processing on the data acquired by the composite sensor. Each unit circuit of the signal conditioning module can adopt the conventional circuit design with corresponding functions; the power module is composed of an integrated circuit MAX1606 and a constant current diode.
As a further explanation of the present invention, the above-mentioned main control module includes a main control processing unit, a wireless communication module, a power management module, a key switch and an indicator light; the key switch and the indicator lamp are arranged on the front panel of the rectangular metal shell; the main control module is used for carrying out analog-to-digital conversion and data processing and transmitting the processed data to the concentrator through the wireless communication module. The wireless communication module can select a LoRa module, a 4G module, a 5G module or a WIFI module.
As a further explanation of the present invention, the above main control module is further provided with an RS485 communication interface. The RS485 communication interface is used for verification and comparison with wireless communication data in the device testing stage, and is a backup communication interface of the device, and a chip SIT65HVD08DR of Chilite corporation can be used.
The main control module adopts a chip which is provided with a plurality of analog-to-digital conversion channels and can simultaneously carry out parallel acquisition on each channel.
As the utility model discloses further explain, above the power management module is arranged in turning into the required supply voltage of each circuit unit among signal conditioning module and the host system with lithium cell voltage. The function of the power management module is realized through a U4 chip LM 39100S-3.3.
As a further explanation of the present invention, the back panel of the rectangular metal casing is a magnetic panel. The magnetic panel is a panel made of a material with magnetic force or a metal panel subjected to magnetic force treatment.
The integrated sensor acquisition device can be directly adsorbed on the surface of the power equipment, and the composite sensor is aligned to the gap of the equipment for detection; the device can be used for integrally monitoring equipment such as a switch cabinet, a ring main unit, a GIS (geographic information system), cables and the like in a transformer substation.
As a further explanation of the utility model, the concentrator mainly comprises a rectangular metal shell I, a network communication module, a signal conditioning module I and an ARM processor; the network communication module comprises a wireless communication module I, a 61850 module, an RS485 communication interface I and a USB interface. The concentrator has wireless, wired and 61850 communication modes. And the ARM processor selects AM3354 with the main frequency of 800 MHz.
As the utility model discloses further explain, above wireless communication module I is loRa module, 4G module, 5G module or WIFI module.
The utility model further explains that the main station is respectively connected with the concentrator and the mobile phone/flat end of the client, and is a data analysis and processing center for processing the data collected by the integrated sensor collecting device; and controlling the integrated sensor acquisition device to acquire data by combining any sensing channels according to different sensor data analysis results. Specifically, the method comprises the following steps:
simultaneously acquiring data of each sensor of the composite sensor, transmitting the processed data to the master station at the same interval time, and setting the default time to be 10 minutes;
respectively setting average pulse discharge threshold values for a TEV sensor, a UHF sensor and an air ultrasonic (AA) sensor in the composite sensor
Average pulse frequency threshold
PRPS spectrum KL divergence
Amplitude frequency (q-n plot) sample entropy threshold
(ii) a Wherein
= extracted pulse amplitude/number of pulses extracted,
the number of discharge times in 1s is,
=
，
=
，
is the probability that the amplitude-frequency sequence matches m points with a tolerance r,
the probability of matching m +1 points for the amplitude frequency sequence under the tolerance r;
respectively calculating pulse discharge values of TEV, UHF and AA
、
、
Average frequency order of pulses
、
、
KL divergence of PRPS spectrum
、
、
Amplitude frequency (q-n plot) sample entropy value
、
、
；
If the pulse discharge threshold, the average pulse frequency threshold, the spectrum positive and negative half shaft KL divergence and the amplitude frequency (q-n diagram) sample entropy values of a certain sensor(s) exceed the set corresponding thresholds, the data analysis processing center sends an adjustment interval instruction to the end of the integrated sensor acquisition device, the reported data interval of the sensor channel is shortened to 1/3 of the original time interval, and the reported data intervals of the other sensor channels are unchanged.
And carrying out deep fault type diagnosis on the data uploaded by the sensor channel after the interval is shortened for 3 times continuously, if the diagnosis result is abnormal, keeping the sampling interval time of the channel and giving an alarm, otherwise, sending an interval adjusting instruction to the integrated sensor acquisition device by the data processing center, modifying the sampling interval of the channel to be adjusted to be the default time interval, and enabling the default time interval to be consistent with the rest channels.
Compare earlier with prior art, the utility model discloses beneficial effect who has as follows:
1. the utility model discloses simple structure integrates polymorphic type sensor, and adopts magnetism to inhale formula mounting means, and the installation is simple and convenient, can put in the office of simultaneous measurement multiple power equipment, uses in a flexible way, convenient.
2. The utility model provides a sensor acquisition end is installed on waiting to detect power equipment, gathers data, and the concentrator is uploaded to through wireless mode to each sensor acquisition device data collection, and the master station system is forwarded to the data that the concentrator will be collected, and the master station layer carries out analysis processes and failure diagnosis to data, and customer's accessible cell-phone/dull and stereotyped end is looked over data and is looked over, realizes the long-range real time monitoring to power equipment.
3. The utility model discloses can realize that multichannel sensing collection passageway simultaneous acquisition also can realize single or arbitrary sensing passageway's combination collection, realize the insulating state real-time supervision to cubical switchboard equipment through wireless and wired mixed network deployment, this system can monitor power equipment conveniently, safely.
Drawings
Fig. 1 is a schematic view of an overall structure frame according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a functional structure of sensor hardware according to an embodiment of the present invention.
Fig. 3 is an appearance schematic diagram of the integrated sensor acquisition device in an embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, an online partial discharge monitoring device based on a composite sensor comprises an integrated sensor acquisition device, a concentrator, a master station, and a client mobile phone/flat panel end; the integrated sensor acquisition device is connected with the concentrator through a wireless network; the concentrator is connected with the master station through R485; and the master station is connected with the client mobile phone/tablet terminal through a wireless network.
As a preferred embodiment of this embodiment, the integrated sensor acquisition device mainly comprises a rectangular metal shell, a composite sensor, a signal conditioning module and a main control module; the composite sensor is arranged at the front end of the rectangular metal shell; the signal conditioning module and the main control module are arranged in the rectangular metal shell; the output end of the composite sensor is connected with the input end of the signal conditioning module; the output end of the signal conditioning module is connected with the main control module.
The composite sensor is formed by integrating an ultrahigh frequency sensor, an earth electric wave sensor, an ultrasonic sensor and a temperature sensor. The detection frequency range is 300-1500 MHz when the ultrahigh frequency sensor is designed; the ultrasonic sensor adopts a piezoelectric crystal structure, and the resonant frequency of the ultrasonic sensor is 40kHz and is arranged in the sensing device; the earth electric wave sensor adopts a monopole antenna earth electric wave sensor, and the frequency is 1-100M; the temperature sensor is Si7021; the composite sensor is connected with the signal conditioning module in a bus mode.
The signal conditioning module comprises a filter circuit unit, a gain switching circuit unit, a frequency band switching circuit unit, a signal detection circuit unit, an operational amplifier circuit unit, an AD conversion circuit unit and a power supply module; and the signal conditioning module is used for carrying out analog signal processing on the data acquired by the composite sensor.
The main control module comprises a main control processing unit, a wireless communication module, a power management module, a key switch and an indicator light; the key switch and the indicator lamp are arranged on the front panel of the rectangular metal shell; the main control module is used for carrying out analog-to-digital conversion and data processing and transmitting the processed data to the concentrator through the wireless communication module. And the power supply management module is used for converting the voltage of the lithium battery into the power supply voltage required by each circuit unit in the signal conditioning module and the main control module. The power management module is realized through a U4 chip LM 39100S-3.3. The wireless communication module adopts a LoRa mode. The main control module adopts an XC6SLX25T-2FGG chip to realize arbitrary combination acquisition and data processing of sensors of different types of data.
In a preferred embodiment of the present invention, the back panel of the rectangular metal casing is a magnetic panel.
As a preferred implementation manner of this embodiment, the concentrator mainly includes a rectangular metal casing i, a network communication module, a signal conditioning module i, and an ARM processor; the network communication module comprises a wireless communication module I, a 61850 module, an RS485 communication interface I and a USB interface. And the wireless communication module I is an LoRa module. And the ARM processor selects AM3354 with the main frequency of 800 MHz.
In this embodiment, wireless communication module and wireless communication module I also can choose for use wireless data transmission modules such as 4G module, 5G module or WIFI module.
In this embodiment, the master station is connected to the concentrator and the client mobile phone/tablet terminal, and is a data analysis and processing center for processing data collected by the integrated sensor collection device; and controlling the integrated sensor acquisition device to acquire data by combining any sensing channels according to different sensor data analysis results. Specifically, the method comprises the following steps:
simultaneously acquiring data of each sensor of the composite sensor, transmitting the processed data to the master station at the same interval time, and setting the default time to be 10 minutes;
respectively setting average pulse discharge threshold values for a TEV sensor, a UHF sensor and an air ultrasonic (AA) sensor in the composite sensor
Average pulse frequency threshold
PRPS spectrum KL divergence
Amplitude frequency (q-n plot) sample entropy threshold
(ii) a Wherein
= extracted pulse amplitude/number of pulses extracted,
the number of discharge times in 1s is set,
=
，
=
，
is the probability that the amplitude-frequency sequence matches m points with a tolerance r,
the probability of matching m +1 points for the amplitude frequency sequence under the tolerance r;
respectively calculating pulse discharge values of TEV, UHF and AA
、
、
Average frequency order of pulses
、
、
PRPS spectrum KL divergence
、
、
Amplitude frequency (q-n plot) sample entropy value
、
、
；
If the pulse discharge amount threshold value, the average pulse frequency threshold value, the spectrum positive and negative half shaft KL divergence and the amplitude frequency (q-n diagram) sample entropy values of a certain sensor(s) exceed the set corresponding threshold values, the data analysis processing center sends an adjustment interval instruction to the end of the integrated sensor acquisition device, the reported data interval of the sensor channel is shortened to be 1/3 of the original time interval, and the reported data intervals of the other sensor channels are unchanged.
And carrying out deep fault type diagnosis on the data uploaded by the sensor channel after the interval is shortened for 3 times continuously, if the diagnosis result is abnormal, keeping the sampling interval time of the channel and giving an alarm, otherwise, sending an interval adjusting instruction to the integrated sensor acquisition device by the data processing center, modifying the sampling interval of the channel to be adjusted to be the default time interval, and enabling the default time interval to be consistent with the rest channels.
It should be understood that the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the practice of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description; this is not necessary, nor exhaustive, of all embodiments; and obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a partial discharge on-line monitoring device based on composite sensor which characterized in that: the system comprises an integrated sensor acquisition device, a concentrator, a master station and a client mobile phone/flat panel end; the integrated sensor acquisition device is connected with the concentrator through a wireless network; the concentrator is connected with the master station through R485; and the master station is connected with the client mobile phone/tablet computer end through a wireless network.
2. The composite sensor-based partial discharge online monitoring device according to claim 1, characterized in that: the integrated sensor acquisition device mainly comprises a rectangular metal shell, a composite sensor, a signal conditioning module and a main control module; the composite sensor is arranged at the front end of the rectangular metal shell; the signal conditioning module and the main control module are arranged in the rectangular metal shell; the output end of the composite sensor is connected with the input end of the signal conditioning module; and the output end of the signal conditioning module is connected with the main control module.
3. The composite sensor-based partial discharge online monitoring device according to claim 2, characterized in that: the composite sensor is formed by integrating an ultrahigh frequency sensor, a ground electric wave sensor, an ultrasonic sensor and a temperature sensor.
4. The on-line partial discharge monitoring device based on the composite sensor as claimed in claim 2, wherein: the signal conditioning module comprises a filter circuit unit, a gain switching circuit unit, a frequency band switching circuit unit, a signal detection circuit unit, an operational amplifier circuit unit, an AD conversion circuit unit and a power supply module; and the signal conditioning module is used for carrying out analog signal processing on the data acquired by the composite sensor.
5. The on-line partial discharge monitoring device based on the composite sensor as claimed in claim 2, wherein: the main control module comprises a main control processing unit, a wireless communication module, a power management module, a key switch and an indicator light; the key switch and the indicator lamp are arranged on the front panel of the rectangular metal shell; the main control module is used for carrying out analog-to-digital conversion and data processing and transmitting the processed data to the concentrator through the wireless communication module.
6. The on-line partial discharge monitoring device based on the composite sensor as claimed in claim 5, wherein: the main control module is also provided with an RS485 communication interface.
7. The composite sensor based partial discharge online monitoring device according to claim 5, characterized in that: and the power supply management module is used for converting the voltage of the lithium battery into the power supply voltage required by each circuit unit in the signal conditioning module and the main control module.
8. The on-line partial discharge monitoring device based on the composite sensor as claimed in claim 2, wherein: the back panel of the rectangular metal shell is a magnetic panel.
9. The on-line partial discharge monitoring device based on the composite sensor as claimed in claim 1, wherein: the concentrator mainly comprises a rectangular metal shell I, a network communication module, a signal conditioning module I and an ARM processor; the network communication module comprises a wireless communication module I, a 61850 module, an RS485 communication interface I and a USB interface.
10. The on-line partial discharge monitoring device based on the composite sensor as claimed in claim 9, wherein: wireless communication module I is loRa module, 4G module, 5G module or WIFI module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221146371.7U CN218181008U (en) | 2022-05-13 | 2022-05-13 | Partial discharge on-line monitoring device based on composite sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221146371.7U CN218181008U (en) | 2022-05-13 | 2022-05-13 | Partial discharge on-line monitoring device based on composite sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218181008U true CN218181008U (en) | 2022-12-30 |
Family
ID=84605107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221146371.7U Active CN218181008U (en) | 2022-05-13 | 2022-05-13 | Partial discharge on-line monitoring device based on composite sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218181008U (en) |
-
2022
- 2022-05-13 CN CN202221146371.7U patent/CN218181008U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202693740U (en) | GIS (Geographic Information System) partial discharge online monitoring comprehensive processing unit | |
| CN104459493A (en) | Switch cabinet partial discharge on-line monitoring system | |
| CN203337722U (en) | Voltage and current collecting device of grid overhead transmission line | |
| CN112880740A (en) | Transformer running state on-line monitoring system and multi-parameter intelligent sensor thereof | |
| CN108562780A (en) | A kind of iron core and clamp earthing current online monitoring system of electrical equipment | |
| CN113655350A (en) | GIS partial discharge online monitoring system and method | |
| CN218181008U (en) | Partial discharge on-line monitoring device based on composite sensor | |
| CN208226539U (en) | A kind of intelligence power alarm electric instrument | |
| CN204155435U (en) | A kind of wireless temperature acquisition system | |
| CN204189543U (en) | Class composite insulation outer coat zinc oxide arrester is pressed in a kind of low cost intelligent type | |
| CN103675590B (en) | Non-contact electric leakage detector | |
| CN104819744A (en) | High-voltage circuit breaker on-line monitoring method | |
| CN111707913A (en) | Partial discharge detection device of power switch cabinet | |
| CN209927942U (en) | Intelligent online monitoring instrument for lightning arrester of power transmission line based on wireless communication | |
| CN217543292U (en) | Partial discharge detection control system | |
| CN110187248A (en) | A kind of open type substation wide area partial discharge monitoring internet of things sensors and its monitoring method | |
| CN103245898B (en) | Switch cabinet local discharging real-time monitoring system based on oxygen sensor | |
| CN210015153U (en) | Active electromagnetic interference electricity stealing alarm device | |
| CN211266900U (en) | Ubiquitous power internet of things partial discharge online monitoring system based on LoRa | |
| CN108649433A (en) | A kind of monitoring method for power distribution cabinet | |
| CN113484697A (en) | Insulator leakage analysis system and method | |
| CN112526274A (en) | Power sensing equipment and monitoring method thereof | |
| CN208969049U (en) | A kind of wind electricity blade damage monitoring alarm system | |
| CN206773138U (en) | A kind of Portable PD On-Line wireless monitoring instrument | |
| CN207380131U (en) | A kind of voltage and current remote monitoring device of intelligent electric meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |