CN204884140U - Distributing type temperature monitoring system of transformer substation based on internet of things - Google Patents

Abstract

The utility model discloses a substation distributed temperature monitoring system based on Internet of Things technology, which includes: a plurality of wireless intelligent temperature sensors, which respectively detect the temperature of each point of equipment in the substation and generate temperature data; a wireless communication management machine, It is wirelessly connected with each of the wireless smart temperature sensors through the ZigBee protocol, and each wireless smart temperature sensor is managed by an ad hoc network, and simultaneously obtains the temperature data generated by each wireless smart temperature sensor; The communication management machine is wirelessly connected through the ZigBee protocol to obtain the temperature data obtained by the wireless communication management machine; the mobile terminal is wirelessly connected with the front-end processor in the station to obtain the front-end processor in the station. temperature data. The utility model adopts a distributed wireless temperature measurement method based on the Internet of Things technology to realize monitoring and early warning of the temperature of key points of substation equipment.

Description

A distributed temperature monitoring system for substations based on Internet of Things technology

technical field

The utility model relates to a temperature monitoring system, in particular to a distributed temperature monitoring system of a substation.

Background technique

During the operation of the power system, overcurrent will lead to overheating of electrical appliances, busbars, etc.; poor contact of conductive parts such as busbars, contacts, cables, etc. will also lead to overheating. Overheating of the equipment will lead to insulation damage and insulation aging and even short-circuit faults, causing power accidents and causing huge losses to power companies and the production of the national economy. Most of the faults in the power system are related to heat. Therefore, the temperature monitoring of high-voltage equipment in substations is related to the reliable and safe operation of the entire system.

At present, the commonly used domestic substation high-voltage equipment operating temperature monitoring technologies mainly include ordinary temperature measurement, optical fiber monitoring, and infrared temperature measurement. The more effective one is infrared temperature measurement. However, due to the influence of installation size and economy on the one hand, it is uneconomical and infeasible to use infrared temperature measurement technology for all equipment in substations to monitor temperature; on the other hand, infrared detection methods still require manual diagnosis and cannot achieve real-time and accurate Fault detection, which restricts the improvement of the automation level of fault diagnosis of power equipment in substations.

Utility model content

The purpose of this utility model is to provide a substation distributed temperature monitoring system based on Internet of Things technology, which can monitor and warn the temperature of key points of substation equipment at a lower cost, thereby preventing power failures caused by overheating of substation equipment , improve the intelligence level of the substation, and ensure the reliable and safe operation of the substation.

In order to achieve the above purpose, the utility model proposes a substation distributed temperature monitoring system based on Internet of Things technology, which includes:

A number of wireless intelligent temperature sensors, which respectively detect the temperature of each point of the equipment in the substation and generate temperature data;

A wireless communication management machine, which is wirelessly connected with each of the wireless intelligent temperature sensors through the ZigBee protocol, and carries out ad hoc network management to each wireless intelligent temperature sensor, and simultaneously obtains the temperature data generated by each wireless intelligent temperature sensor;

The front-end computer in the station is wirelessly connected to the wireless communication management machine through the ZigBee protocol to obtain the temperature data obtained by the wireless communication management machine;

The mobile terminal is wirelessly connected to the front-end processor in the station through the TCP/IP protocol, so as to obtain the temperature data obtained by the front-end processor in the station.

In order to prevent power failures caused by overheating of substation equipment, it is necessary to monitor and warn the temperature of key points of substation equipment. The above-mentioned substation distributed temperature monitoring system based on Internet of Things technology provided by the utility model adopts the method of distributed wireless temperature measurement based on Internet of Things technology combined with remote monitoring to realize monitoring and early warning of temperature at key points of substation equipment. Specifically, the utility model detects the temperature of key points of the substation equipment through a wireless intelligent temperature sensor and generates temperature data, and then conducts ad hoc network management on each wireless intelligent temperature sensor based on the ZigBee protocol through a wireless communication management machine and wirelessly acquires the temperature Data, finally obtain the temperature data wirelessly based on the ZigBee protocol through the front-end processor in the station, and then wirelessly transmit the temperature data to the mobile terminal based on the TCP/IP protocol after the ZigBee-TCP/IP protocol conversion is performed on the temperature data, and the mobile terminal can be based on the temperature. The data judges whether the temperature of the key point of the corresponding substation equipment is too high to realize the monitoring and early warning of the temperature of the key point of the substation equipment.

In the above-mentioned substation distributed temperature monitoring system based on the Internet of Things technology provided by the utility model, the wireless communication management machine performs ad hoc network management on each wireless intelligent temperature sensor based on the ZigBee protocol, so that the structure of the distributed system, the wireless intelligent temperature The number of sensors is flexible and variable, and it has very good flexibility in installation, disassembly and movement, which lays the foundation for the intelligent development of temperature monitoring of substation equipment. In addition, the wireless connection between the mobile terminal and the front-end computer in the station is through the TCP/IP protocol, so that the temperature of the substation equipment can be monitored remotely. Especially when the mobile terminal is a mobile phone, the capital investment of the mobile terminal can be saved, and because the mobile phone is carried around, When needed during the inspection process, the designated wireless communication management machine and wireless intelligent temperature sensor can be awakened by the mobile phone, thereby greatly saving the power consumption of the wireless communication management machine and wireless intelligent temperature sensor.

Further, in the substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention, the plurality of wireless intelligent temperature sensors include at least three groups of measuring points, respectively corresponding to detect the three-phase temperature of the equipment, wherein Each measuring point group includes at least one wireless intelligent temperature sensor.

In the above solution, in order to accurately monitor the temperature signal, the three-phase temperature of the substation equipment is monitored, so as to monitor and warn the three-phase temperature of the substation equipment according to the difference of the three-phase temperature of the substation equipment.

Furthermore, in the above-mentioned substation distributed temperature monitoring system based on Internet of Things technology, the plurality of wireless intelligent temperature sensors also include at least one single measuring point wireless intelligent temperature sensor, and each single measuring point wireless intelligent temperature sensor corresponds to a wireless intelligent temperature sensor. Smart temperature sensor.

In the above scheme, in order to accurately monitor the temperature signal, the key equipment of the substation equipment and the temperature at the position prone to heat are monitored, so as to control the key equipment and temperature of the substation equipment according to the temperature level of the key equipment of the substation equipment and the position prone to heat The temperature at the place prone to heat will be monitored and early warning.

Further, in the substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention or above, the wireless intelligent temperature sensor includes a built-in temperature sensor connected in sequence, a signal transmission module, a main control CPU and a wireless networking modules, also including power modules, where:

The built-in temperature sensor respectively detects the temperature of each point of the equipment in the substation, and generates corresponding temperature data;

The signal transmission module realizes the transmission of the temperature data between the built-in temperature sensor and the main control CPU under the control of the main control CPU;

The wireless networking module realizes the management of the ad hoc network and the wireless transmission of the temperature data under the control of the main control CPU;

The power supply module is respectively connected with the built-in temperature sensor, signal transmission module, wireless networking module and main control CPU to provide power.

In the above scheme, the wireless communication management machine performs ad hoc network management on each wireless intelligent temperature sensor based on the ZigBee protocol through the wireless networking module; the mobile terminal wakes up the designated wireless intelligent temperature sensor through the main control CPU. Built-in temperature sensor, signal transmission module, wireless networking module and power module, thus greatly saving the power consumption of the wireless intelligent temperature sensor.

Furthermore, in the above-mentioned substation distributed temperature monitoring system based on Internet of Things technology, the built-in temperature sensor is a DS18B20 digital temperature sensor.

In the above solution, the DS18B20 digital temperature sensor is a new generation of digital temperature sensor produced by Dallas Semiconductor Company in the United States, and it adopts a built-in arrangement, that is, it is packaged in the wireless intelligent temperature sensor.

Furthermore, in the above-mentioned substation distributed temperature monitoring system based on Internet of Things technology, each of the wireless intelligent temperature sensors has a CC2430 radio frequency transceiver chip.

Furthermore, in the above-mentioned substation distributed temperature monitoring system based on Internet of Things technology, there is at least one wireless communication management machine, and each wireless communication management machine has a CC2430 radio frequency transceiver chip.

In the above solution, the radio frequency transceiver chip is used for the wireless connection between the wireless intelligent temperature sensor and the wireless communication management machine based on the ZigBee protocol, so as to transmit temperature data between the wireless intelligent temperature sensor and the wireless communication management machine. The radio frequency transceiver chip adopts the radio frequency transceiver chip CC2430 introduced by TI/ChipconAs that conforms to the 2.4GIEEE802.15.4 standard. The wireless communication equipment developed by using this chip supports a data transmission rate of up to 250kbit/s, which can realize multipoint-to-multipoint fast networking. A very important reason for using CC2430 is its ultra-low current consumption: receiving data current is only 19.7mA, sending data current is only 17.4mA, so it is especially suitable for battery power supply. In addition, in the above scheme, the number of wireless intelligent temperature sensors wirelessly connected to the wireless communication management machine and the number of wireless communication management machines are determined according to the load capacity and actual needs of the wireless communication management machine. There is no specific correspondence between them.

Furthermore, in the above-mentioned substation distributed temperature monitoring system based on Internet of Things technology, the front-end processor in the station has a CC2430 radio frequency transceiver chip.

Furthermore, in the above-mentioned substation distributed temperature monitoring system based on Internet of Things technology, the substation front-end processor also has a WF8000-U module.

In the above scheme, the front-end processor in the station realizes the wireless connection based on the ZigBee protocol with the wireless communication management machine through the CC2430 radio frequency transceiver chip, and realizes the wireless connection based on the TCP/IP protocol with the mobile terminal through the WF8000-U module, The CC2430 radio frequency transceiver chip is responsible for ZigBee-TCP/IP protocol conversion. The WF8000-U module is a wifi module produced by Shenzhen Tianmo Technology Co., Ltd.

The substation distributed temperature monitoring system based on the Internet of Things technology described in the utility model adopts the method of distributed wireless temperature measurement based on the Internet of Things technology combined with remote monitoring to realize the monitoring and early warning of the temperature of key points of the substation equipment, and prevent the Power failures caused by equipment overheating can improve the intelligence level of substations and ensure the reliable and safe operation of substations. The structure of the distributed system of the utility model and the number of wireless intelligent temperature sensors are flexible and variable, and it has very good flexibility in terms of installation, disassembly and movement; the utility model can remotely monitor the temperature of substation equipment, especially when the mobile terminal is a mobile phone At the same time, the capital investment of the mobile terminal can be saved, and the power consumption of the on-site wireless intelligent temperature sensor and the wireless communication management machine can be saved.

Description of drawings

FIG. 1 is a schematic diagram of an overall architecture of a substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention in an implementation manner.

Fig. 2 is a structural schematic diagram of a wireless intelligent temperature sensor in an embodiment of the substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention.

Fig. 3 is a circuit diagram of a built-in temperature sensor in an embodiment of the substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention.

Fig. 4 is a schematic structural diagram of a substation front-end processor in an embodiment of the substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention.

Detailed ways

The substation distributed temperature monitoring system based on the Internet of Things technology described in the utility model will be further explained and described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 schematically shows the overall architecture of the substation distributed temperature monitoring system based on the Internet of Things technology in an embodiment of the present invention.

As shown in Figure 1, the substation distributed temperature monitoring system based on the Internet of Things technology in this embodiment includes a number of wireless intelligent temperature sensors distributed at each temperature signal monitoring point of substation equipment including transformers and GIS, which respectively correspond to the temperature detection in the substation. The temperature of each point of the equipment is used to generate temperature data. Among them, there are n substation equipment in total, including substation equipment 1 to substation equipment n; each temperature detection point of each substation equipment is equipped with a wireless intelligent temperature sensor. Among them, three of the substation equipment A wireless intelligent temperature sensor is installed at two different positions of each phase in the phase. According to the installed position, corresponding to the three phases of substation equipment 1 to substation equipment n, the wireless intelligent temperature sensor is divided into wireless intelligent temperature sensor S11 The first measuring point group of ~Sn1, S12~Sn2, the second measuring point group including wireless smart temperature sensors S13~Sn3, S14~Sn4, and the third measuring point group including wireless smart temperature sensors S15~Sn5, S16~Sn6 ; In addition, a wireless intelligent temperature sensor is also installed at two heat-prone positions of the substation equipment, including wireless intelligent temperature sensors S17～Sn7, S18～Sn8; the substation distributed temperature monitoring system based on Internet of Things technology in this embodiment It also includes a wireless communication management machine 1 to a wireless communication management machine n wirelessly connected to the wireless intelligent temperature sensor and the front-end processor in the station based on the ZigBee protocol, which are respectively wirelessly connected to the wireless intelligent temperature sensors in the substation equipment 1 to substation equipment n, Receive the temperature data transmitted by the wireless intelligent temperature sensor, wherein each wireless intelligent temperature sensor and each wireless communication management machine has a radio frequency transceiver chip model CC2430 to realize the wireless connection between the wireless intelligent temperature sensor and the wireless communication management machine, And carry out ad hoc network management to each wireless intelligent temperature sensor, and obtain the temperature data that each wireless intelligent temperature sensor generates simultaneously; The substation distributed temperature monitoring system based on Internet of Things technology of the present embodiment also includes the front-end machine in the station, and it also has The radio frequency transceiver chip of model CC2430 is used to wirelessly connect with wireless communication management machine 1~wireless communication management machine n through ZigBee protocol to obtain the temperature data obtained by wireless communication management machine 1~wireless communication management machine n, and is responsible for ZigBee-TCP /IP protocol conversion; the substation distributed temperature monitoring system based on the Internet of Things technology of the present embodiment also includes a mobile phone as a mobile terminal, which is wirelessly connected to the front-end processor in the station by the TCP/IP protocol to obtain the front-end processor in the station. temperature data.

Fig. 2 illustrates the structure of the wireless intelligent temperature sensor of the substation distributed temperature monitoring system based on Internet of Things technology described in the utility model under an embodiment; Fig. 3 has provided the technology based on Internet of Things described in the utility model The circuit diagram of the built-in temperature sensor of the substation distributed temperature monitoring system in one embodiment.

As shown in Figure 2, the wireless intelligent temperature sensor of this embodiment includes a built-in temperature sensor, a signal transmission module, a main control CPU and a wireless networking module packaged together in sequence, and also includes a packaged power supply module, wherein: The built-in temperature sensor respectively detects the temperature of each point of the equipment in the substation and generates corresponding temperature data; the signal transmission module realizes the transmission of temperature data between the built-in temperature sensor and the main control CPU under the control of the main control CPU; the wireless group The network module realizes ad hoc network management and wireless transmission of temperature data under the control of the main control CPU; the power supply module is connected with the built-in temperature sensor, signal transmission module, wireless networking module and main control CPU to provide power. As an implementation scheme, the built-in temperature sensor adopts DS18B20 digital temperature sensor, as shown in Figure 3, the VCC pin is connected to the 3.3V power supply, the DA pin is a 9-12-bit serial I/O interface, and the DA pin is connected to the A 4.7kΩ resistor R47 is connected between the VCC pins, and the GND pin is grounded; the signal transmission module, the main control CPU, the wireless networking module and the power module adopt the CC2430 radio frequency transceiver chip as a whole, and the P0 group, P1 group and P2 group of the chip The pin is the I/O interface of the signal transmission module, select one of the pins to connect to the DA pin of the built-in temperature sensor; RF_P, RF_N and TXRX_SWITCH are the wireless signal transceiver interfaces of the wireless networking module, which are connected to the antenna; the AVDD group , DVDD group and its related pins are the power supply interface of the power supply module, which are connected with the power supply (battery-powered in this embodiment); the XOSC group pins are connected with 32M and 32K crystal oscillators to provide the reference frequency.

Fig. 4 schematically shows the structure of the substation front-end processor in an implementation mode of the substation distributed temperature monitoring system based on the Internet of Things technology described in the present invention.

As shown in Figure 4, the front-end processor in the station of this embodiment includes: CC2430 radio frequency transceiver chip, and the WF8000-U module, power supply and interface connected thereto, wherein, the CC2430 radio frequency transceiver chip is used to realize the communication with the wireless communication management machine Wireless connection based on ZigBee protocol to obtain temperature data obtained by wireless communication management machine, and responsible for ZigBee-TCP/IP protocol conversion; WF8000-U module is used to realize wifi wireless connection with mobile terminals based on TCP/IP protocol .

Please refer to Figures 1 to 3. When the substation distributed temperature monitoring system based on the Internet of Things technology in this embodiment is working, the mobile phone as a mobile terminal is installed with a mobile phone APP for temperature monitoring. . The wireless communication management machine sends an instruction to the wireless intelligent temperature sensor to wake up the wireless intelligent temperature sensor at the temperature signal monitoring point of the specified substation equipment in substation equipment 1 to substation equipment n, and triggers it to detect the temperature at the temperature signal monitoring point of the specified substation equipment. Generate temperature data; the temperature data is wirelessly obtained by the corresponding wireless communication management machines among wireless communication management machines 1 to wireless communication management machines n and wirelessly transmitted to the front-end processor in the station based on the ZigBee protocol; the temperature data is transmitted by the front-end processor in the station. The data is converted by ZigBee-TCP/IP protocol, and wirelessly transmitted to the mobile phone as a mobile terminal through wifi based on the TCP/IP protocol; the mobile phone as a mobile terminal stores, monitors and warns the temperature data through the above-mentioned mobile phone APP.

In this embodiment, the above-mentioned mobile phone APP monitors and warns the temperature data according to the monitoring method required for accurate monitoring. The monitoring method required for accurate monitoring is to use the temperature signal monitoring points of substation equipment 1 to substation equipment n monitored by wireless intelligent temperature sensors. Combined with the temperature data of substation equipment 1 ~ substation equipment n temperature signal monitoring points, multiple types and different levels of monitoring and early warning of potential equipment failures and abnormalities are carried out. Specifically, this embodiment includes four types Monitoring and early warning, including single measuring point monitoring and early warning, measuring point group difference monitoring and early warning, phase sequence difference monitoring and early warning, and overall measuring point monitoring and early warning of substation equipment. The temperature signal adopts a three-level early warning mode of unilateral uplink. The early warning levels are divided into three types: low level, medium level and high level, which correspond to a kind of early warning threshold respectively; the difference monitoring of the measuring point group and the early warning monitor the temperature of different wireless intelligent temperature sensors in the measuring point group. If the difference is too large, it is considered that the phase of the measuring point group is abnormal; phase sequence difference monitoring and early warning monitors the difference in temperature signals of wireless intelligent temperature sensors between different measuring point groups at the same installation position. If the temperature signal of a wireless smart temperature sensor in a point group is higher than the temperature signals of the other two wireless smart temperature sensors in the same installation position, it is considered that the phase of the measuring point group is abnormal. If the temperature signal of a wireless smart temperature sensor is lower than the temperature signals of the wireless smart temperature sensors of the other two measuring point groups at the same installation location, it is considered that the phase of the other two measuring point groups is abnormal.

The substation distributed temperature monitoring system based on the Internet of Things technology in this embodiment adopts the method of distributed wireless temperature measurement based on the Internet of Things technology combined with the remote monitoring of the mobile phone APP to realize the monitoring and early warning of the temperature of key points of the substation equipment, and prevent the Power failures caused by overheating can improve the intelligence level of substations and ensure the reliable and safe operation of substations. The structure of the distributed system of this embodiment, the quantity of wireless intelligent temperature sensor is flexible and changeable, has very good flexibility aspect installation, disassembly and moving; When the mobile terminal of this embodiment is a mobile phone, can save the Capital investment, and save the power consumption of the wireless intelligent temperature sensor and wireless communication management machine on site.

It should be noted that the above examples are only specific embodiments of the present utility model, and obviously the present utility model is not limited to the above embodiments, and there are many similar changes thereupon. If those skilled in the art directly derive or associate all deformations from the content disclosed in the utility model, they shall all belong to the protection scope of the utility model.

Claims (9)

1., based on a transforming plant distributed temperature monitoring system for technology of Internet of things, it is characterized in that, comprising:

Some intelligent wireless temperature sensors, the temperature of the corresponding equipment each point detected in transformer station of its difference, generates temperature data;

Wireless telecommunications supervisor, itself and described each intelligent wireless temperature sensor by Zigbee protocol wireless connections, and carry out MANET management to each intelligent wireless temperature sensor, obtain the temperature data that each intelligent wireless temperature sensor generates simultaneously;

Front end processor in standing, itself and described wireless telecommunications supervisor pass through Zigbee protocol wireless connections, to obtain the temperature data that described wireless telecommunications supervisor obtains;

Mobile terminal, in itself and described station, front end processor is by ICP/IP protocol wireless connections, to obtain the temperature data that in described station, front end processor obtains.

2. as claimed in claim 1 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, described some intelligent wireless temperature sensors at least comprise three groups of measuring point groups, the corresponding three-phase temperature detecting described equipment respectively, wherein each measuring point group includes intelligent wireless temperature sensor described at least one.

3. as claimed in claim 2 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, described some intelligent wireless temperature sensors also comprise at least one single measuring point intelligent wireless temperature sensor, the corresponding intelligent wireless temperature sensor of each single measuring point intelligent wireless temperature sensor.

4. the transforming plant distributed temperature monitoring system based on technology of Internet of things as described in claim arbitrary in claim 1-3, it is characterized in that, described intelligent wireless temperature sensor comprises the built-in temperature sensor, signal transmission module, master cpu and the wireless networking module that connect successively, also comprise power module, wherein:

Described built-in temperature sensor respectively correspondence detects the temperature of the equipment each point in transformer station, and generates corresponding temperature data;

Described signal transmission module realizes the transmission of the described temperature data between described built-in temperature sensor and master cpu under the control of described master cpu;

Described wireless networking module realizes the wireless transmission of the management of described MANET and described temperature data under the control of described master cpu;

Described power module and described built-in temperature sensor, signal transmission module, wireless networking module and master cpu are connected to provide power supply respectively.

5., as claimed in claim 4 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, described built-in temperature sensor is DS18B20 digital temperature sensor.

6., as claimed in claim 4 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, described each intelligent wireless temperature sensor all has CC2430 rf chip.

7., as claimed in claim 4 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, described wireless telecommunications supervisor is set at least one, and described each wireless telecommunications supervisor all has CC2430 rf chip.

8., as claimed in claim 4 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, in described station, front end processor has CC2430 rf chip.

9., as claimed in claim 8 based on the transforming plant distributed temperature monitoring system of technology of Internet of things, it is characterized in that, in described station, front end processor also has WF8000-U module.