CN114531457A - MQTT-based high-voltage cable online monitoring data acquisition device and method - Google Patents
MQTT-based high-voltage cable online monitoring data acquisition device and method Download PDFInfo
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- CN114531457A CN114531457A CN202011216284.XA CN202011216284A CN114531457A CN 114531457 A CN114531457 A CN 114531457A CN 202011216284 A CN202011216284 A CN 202011216284A CN 114531457 A CN114531457 A CN 114531457A
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- 238000012423 maintenance Methods 0.000 description 6
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- 238000013523 data management Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a high-voltage cable on-line monitoring data acquisition device and method based on MQTT, wherein the device comprises a data acquisition unit, an MQTT proxy server and a data processing unit; the data acquisition unit comprises a plurality of sensors, the sensors are connected with an MQTT proxy server through an MQTT protocol, and the sensors subscribe the designated topic to the MQTT proxy server respectively; the data processing unit and the MQTT proxy server; when the monitoring data of each sensor changes, a JSON message is organized according to an agreed format and is sent to a designated topic in the MQTT proxy server as the load of the MQTT protocol, and the data processing unit receives the data of the designated topic and analyzes the data to complete the acquisition of the high-voltage cable online monitoring data based on the MQTT. The invention can realize the uniform collection of different types of sensors and different types of monitoring data.
Description
Technical Field
The invention belongs to the field of online monitoring of high-voltage cables of a power grid, and particularly relates to an MQTT-based online monitoring data acquisition device and method for high-voltage cables.
Background
With the continuous acceleration of the urbanization process in China, the scale of the cable is gradually enlarged, and the transformer substations in the central areas of various provinces and cities generally adopt a cable power supply mode. In order to guarantee safe and reliable operation of the power grid, attention needs to be paid to the operation state of the cable line at any time. The national power grid specially provides a high-voltage cable professional lean management comprehensive platform for managing and monitoring high-voltage cables, aims to provide informatization and intelligent support for power transmission cable lean operation and maintenance management work, focuses on the power transmission cable professional lean management and control requirements, realizes special work progress management and control and operation and maintenance data management, gradually establishes a power transmission cable operation and maintenance big data management and control mechanism and an analysis and diagnosis platform, and realizes intelligent operation and maintenance management and control functions such as power transmission cable line state comprehensive diagnosis, risk early warning, differentiation operation and maintenance decision, aging assessment and retirement decision and the like.
The high-voltage cable on-line monitoring module is an important part of a high-voltage cable professional lean management comprehensive platform. The system is responsible for collecting high-voltage cable monitoring data of cities and places in the whole province, storing and forwarding the data, is a data source of a follow-up module, and has the relationship between the real-time performance, accuracy and safety of the data to the on-line monitoring and state maintenance level of the high-voltage cable.
The sensors related to the on-line monitoring of the high-voltage cable are various in types, and the communication protocol is also various. Therefore, a normative and efficient data acquisition method suitable for the field of online monitoring of high-voltage cables is needed.
Disclosure of Invention
Aiming at the problems, the invention provides a high-voltage cable online monitoring data acquisition device and method based on MQTT, which can realize the unified acquisition of different types of sensors and different types of monitoring data.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
in a first aspect, the invention provides an MQTT-based high-voltage cable online monitoring data acquisition device, which comprises a data acquisition unit, an MQTT proxy server and a data processing unit, wherein the MQTT proxy server is connected with the data processing unit through a data transmission line;
the data acquisition unit comprises a plurality of sensors, the sensors are connected with an MQTT proxy server through an MQTT protocol, and the sensors subscribe the designated topic to the MQTT proxy server respectively;
the data processing unit and the MQTT proxy server;
when the monitoring data of each sensor changes, a JSON message is organized according to an agreed format and is sent to a designated topic in an MQTT proxy server as the load of an MQTT protocol, and the data processing unit receives and analyzes the data of the designated topic to finish the acquisition of the high-voltage cable online monitoring data based on the MQTT.
Optionally, the MQTT proxy server includes an encryption module, which is used to ensure security of data transmission.
Optionally, the JSON packet includes a unique sensor number, a sensor type, and a sending sequence number.
Optionally, when the sensor is an intelligent sensor, the sensor is directly connected with the MQTT proxy server.
Optionally, when the sensors do not support the MQTT protocol or the network is not accessible, the sensors are respectively connected to an internet of things intelligent gateway and connected to the MQTT proxy server through the internet of things intelligent gateway.
Optionally, the topic format is/v 1/devices/{ sensorId }/uploadDatas, where sensorId is a sensor code for uniquely identifying a sensor.
In a second aspect, the invention provides a method for acquiring online monitoring data of a high-voltage cable based on MQTT, which comprises the following steps:
when the monitoring data of each sensor changes, the sensors organize JSON messages according to an agreed format to serve as loads of an MQTT protocol and send the loads to a designated topic in an MQTT proxy server;
the MQTT proxy server sends the received designated topic to a data processing unit;
and the data processing unit analyzes the received designated topic to complete the acquisition of the high-voltage cable online monitoring data based on the MQTT.
Optionally, the topoic format is/v 1/devices/{ sensorId }/uploadDatas, where sensorId is the sensor code used to uniquely identify the sensor.
Optionally, the JSON packet includes a unique sensor number, a sensor type, and a sending sequence number.
Compared with the prior art, the invention has the beneficial effects that:
the high-voltage cable online monitoring data acquisition device and method based on the MQTT can realize the uniform acquisition of different types of monitoring data of different types of sensors.
Drawings
In order that the manner in which the present invention is more fully understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, wherein:
fig. 1 is a schematic structural diagram of an MQTT-based high-voltage cable online monitoring data acquisition device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
Message Queue Telemetry Transport (MQTT), a Message Queuing Telemetry Transport (mstt) is a Message publish/subscribe Transport protocol based on a client-server architecture. The MQTT protocol is cool, simple, open, and easy to implement, and works normally even in embedded devices with low hardware performance and in poor network conditions. Therefore, the invention provides the high-voltage cable online monitoring data acquisition device and method based on the MQTT, which can realize the uniform acquisition of different types of monitoring data of different types of sensors.
Example 1
The embodiment of the invention provides an MQTT-based high-voltage cable online monitoring data acquisition device, which comprises a data acquisition unit, an MQTT proxy server and a data processing unit, wherein the MQTT proxy server is connected with the data processing unit through a data transmission line;
the data acquisition unit comprises a plurality of sensors, the sensors are connected with an MQTT proxy server through an MQTT protocol, and the sensors subscribe the designated topic to the MQTT proxy server respectively;
the data processing unit and the MQTT proxy server;
when the monitoring data of each sensor changes, a JSON message is organized according to an agreed format and is sent to a designated topic in an MQTT proxy server as the load of an MQTT protocol, and the data processing unit receives and analyzes the data of the designated topic to finish the acquisition of the high-voltage cable online monitoring data based on the MQTT.
In a specific implementation manner of the embodiment of the invention, the MQTT agent is deployed in a cluster manner, and the number of cluster nodes can be properly adjusted according to the difference of the number of sensors to ensure the high availability of the MQTT agent. The MQTT proxy server comprises an encryption module, so that encryption and decryption of sensitive data can be realized, and the security of data transmission is ensured.
In a specific implementation manner of the embodiment of the present invention, the JSON packet includes a unique sensor number, a sensor type, and a sending sequence number, and the following is an example of a monitoring data packet of a cable joint sensor:
in a specific implementation manner of the embodiment of the present invention, when the sensor is an intelligent sensor, the sensor is directly connected to the MQTT proxy server. The sensor can be connected with the MQTT proxy server in a wired and wireless mode.
In another specific implementation manner of the embodiment of the invention, when the sensors do not support the MQTT protocol or the network is not accessible, each sensor is connected to the internet of things intelligent gateway and connected with the MQTT proxy server through the internet of things intelligent gateway. The sensor can be connected with the MQTT proxy server in a wired and wireless mode. Generally, a single sensor only needs to send data to one topoc, and the internet of things intelligent gateway needs to determine the data of the topoc according to the number of the connected sensors.
In a specific implementation manner of the embodiment of the present invention, the topoic format is/v 1/devices/{ sensorId }/uploaddata, where sensorId is a sensor code for uniquely identifying a sensor, and the number of the data processing units can be adjusted according to the load condition.
Example 2
The embodiment of the invention provides an MQTT-based high-voltage cable online monitoring data acquisition method, which comprises the following steps of:
when the monitoring data of each sensor changes, the sensors organize JSON messages according to an agreed format to serve as loads of an MQTT protocol and send the loads to a designated topic in an MQTT proxy server;
the MQTT proxy server sends the received designated topic to a data processing unit;
and the data processing unit analyzes the received designated topic to complete the acquisition of the high-voltage cable online monitoring data based on the MQTT.
In a specific implementation manner of the embodiment of the present invention, the method further includes the data processing unit performing data parsing on the received specified topic; the load content of the response message is also in json format, and the content includes a unique sensor number, a transmission serial number, an error code and error information, and the following is an example of the response message:
in a specific implementation of the embodiment of the present invention, the topoic format is/v 1/devices/{ sensorId }/uploaddata, where sensorId is a sensor code for uniquely identifying a sensor.
In a specific implementation manner of the embodiment of the present invention, the JSON packet includes a unique sensor number, a sensor type, and a transmission sequence number.
The method of the present invention in the examples is described in detail below with reference to a specific implementation procedure.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A high-voltage cable on-line monitoring data acquisition device based on MQTT is characterized by comprising a data acquisition unit, an MQTT proxy server and a data processing unit;
the data acquisition unit comprises a plurality of sensors, the sensors are connected with an MQTT proxy server through an MQTT protocol, and the sensors subscribe the designated topic to the MQTT proxy server respectively;
the data processing unit and the MQTT proxy server;
when the monitoring data of each sensor changes, a JSON message is organized according to an agreed format and is sent to a designated topic in an MQTT proxy server as the load of an MQTT protocol, and the data processing unit receives and analyzes the data of the designated topic to finish the acquisition of the high-voltage cable online monitoring data based on the MQTT.
2. The MQTT-based high-voltage cable online monitoring data acquisition device as claimed in claim 1, wherein the MQTT-based high-voltage cable online monitoring data acquisition device comprises: the MQTT proxy server comprises an encryption module which is used for ensuring the security of data transmission.
3. The MQTT-based high-voltage cable online monitoring data acquisition device as claimed in claim 1, wherein the MQTT-based high-voltage cable online monitoring data acquisition device comprises: the JSON message comprises a unique sensor number, a sensor type and a sending sequence number.
4. The high-voltage cable online monitoring data acquisition device based on MQTT of claim 1, characterized in that: when the sensor is an intelligent sensor, the sensor is directly connected with the MQTT proxy server.
5. The MQTT-based high-voltage cable online monitoring data acquisition device as claimed in claim 1, wherein the MQTT-based high-voltage cable online monitoring data acquisition device comprises: when the sensors do not support the MQTT protocol or the network is not accessible, the sensors are respectively connected to the Internet of things intelligent gateway and are connected with the MQTT proxy server through the Internet of things intelligent gateway.
6. The MQTT-based high-voltage cable online monitoring data acquisition device as claimed in claim 1, wherein the MQTT-based high-voltage cable online monitoring data acquisition device comprises: the topoic format is/v 1/devices/{ sensorId }/uploadDatas, where sensorId is the sensor code used to uniquely identify the sensor.
7. A high-voltage cable on-line monitoring data acquisition method based on MQTT is characterized by comprising the following steps:
when the monitoring data of each sensor changes, the sensors organize JSON messages according to an agreed format to serve as loads of an MQTT protocol and send the loads to a designated topic in an MQTT proxy server;
the MQTT proxy server sends the received designated topic to a data processing unit;
and the data processing unit analyzes the received designated topic to complete the acquisition of the high-voltage cable online monitoring data based on the MQTT.
8. The method for collecting the high-voltage cable online monitoring data based on the MQTT as claimed in claim 7, wherein the topic format is/v 1/devices/{ sensorId }/uploadDatas, wherein sensorId is a sensor code for uniquely identifying the sensor.
9. The method for acquiring the online monitoring data of the high-voltage cable based on the MQTT as claimed in claim 7, wherein the JSON message comprises a unique sensor number, a sensor type and a sending sequence number.
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