CN103778769A - High-voltage switch cabinet multi-point monitoring system based on wireless temperature sensor network - Google Patents
High-voltage switch cabinet multi-point monitoring system based on wireless temperature sensor network Download PDFInfo
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Abstract
本发明公开了一种基于无线温度传感器网络的高压开关柜多点监测系统，由高压侧发射端和上位机接收主控端两部分组成，高压侧发射端包括多个高压开关柜以及安放在每个高压开关柜触头上的测温模块；上位机接收主控端包括上位机终端以及射频接收端，两者通过RS232串口总线相连；上位机接收主控端以循环轮询的方式通过射频接收端向测温模块发送查询命令，射频接收端采用点对多点双向无线通信协议接收测温模块所测温度数据，并将数据传输至上位机终端进行显示和存储。本发明根据无线传感器网络和点对多点通信系统原理进行设计，具有结构简单，便于安装组网；通信协议简单，抗干扰强，便于工程应用。
The invention discloses a multi-point monitoring system for a high-voltage switchgear based on a wireless temperature sensor network. The temperature measuring module on the contact of a high-voltage switchgear; the receiving main control end of the upper computer includes the upper computer terminal and the radio frequency receiving end, and the two are connected through the RS232 serial bus; The terminal sends a query command to the temperature measurement module, and the radio frequency receiving terminal adopts a point-to-multipoint two-way wireless communication protocol to receive the temperature data measured by the temperature measurement module, and transmits the data to the host computer terminal for display and storage. The invention is designed according to the principles of the wireless sensor network and the point-to-multipoint communication system, and has the advantages of simple structure, convenient installation and networking; simple communication protocol, strong anti-interference, and convenient engineering application.
Description
Technical field
The present invention relates to status of electric power on-line monitoring field, relate in particular to a kind of high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network.
Background technology
Most of high-tension switch gears adopt enclosed construction, radiating condition is poor, in the During Process of Long-term Operation of equipment, the positions such as contact, joint and bus bar junction in switch cubicle because of aging, contact resistance is excessive generates heat, and for a long time in high voltage, under large electric current and fully loaded condition, move, its result causes heat to gather aggravation, if effective monitoring measure is not taked in temperature rise to high-tension switch gear, can not find in time that it is overheated, by the safe operation of entail dangers to electrical equipment.The particularly high-tension switch cabinet of 10kV, directly controls customer charge, if there is unexpected power outage, not only can cause bad social influence, and causes very large economic loss to user and power supply department.At present to the monitoring of high-tension switch cabinet mostly based on manual inspection, hand-held infrared thermometer obtains the temperature data in switch cubicle, but because the structure of switch cubicle becomes increasingly complex, the impact that element blocks makes infrared thermometer often cannot obtain temperature data accurately, the manual inspection time interval is also long, cannot find in time fault.Therefore be badly in need of research on-line monitoring system, high-tension switch cabinet temperature is carried out to on-line monitoring.
The research emphasis of switch cubicle temp measuring system is mainly in temp measuring method and data transfer mode both at home and abroad.Switch cubicle thermometric mode mainly contains contact temperature-measuring and the large class of contactless temperature-measuring two.Data transfer mode mainly contains wire transmission and wireless transmission.The high-tension switch cabinet thermometric of comparative maturity mainly contains infrared measurement of temperature method, optical fiber grating temperature-measuring method and wireless temperature measurement method at present.Infrared measurement of temperature is non-cpntact measurement, suitable for making becomes handheld thermometer, but due to inside switch cabinet complex structure, more to blocking of infrared radiation light path, be subject to the factor impact such as temperature, humidity, background radiation of testing environment, can not guarantee accurately to record temperature, and infrared measurement of temperature cost costliness also limits its application.In the applicable switch cubicle of optical fiber grating temperature-measuring, under the environment of high voltage, large electric current, high-intensity magnetic field, contact is carried out to the measurement of high precision, high stability, can form distributed temperature measuring system all contacts are carried out to on-line monitoring, but because the switch cubicle point for measuring temperature of transformer station is many, required optical fiber can be a lot, cost is high, wiring has difficulties, and may occur " creepage " phenomenon, brings Insulation Problems.Wireless temperature measurement, by wirelessly transmitting data, has solved high and low pressure side Insulation Problems, and temperature measuring equipment is simple in structure, and cost is low, is easy to install, without wiring.
Wireless sensor network WSN(wireless sensor network) form the network system of the self-organization of the multi-hop forming by communication by being deployed in cheap microsensor nodes a large amount of in monitored area.Wireless sensor network is mainly made up of sensor node, gateway (also claiming sink node), three parts of management node (observer).Sensor node is made up of 4 parts such as sensor, data processing unit, data transmission communication module and the power supplys of data acquisition.The sensor of data acquisition is selected according to physical quantity (temperature, humidity, sound, acceleration etc.) and the conditional request of monitored area of measuring perceived object; Processor is selected embedded type CPU conventionally; Data transmission communication module is mainly made into by low-power consumption, short-range wireless communication module; Power supply is mainly to adopt dry cell or solar cell for supplying power.Sensor node is dispersed in guarded region, and each node is collected data, and data wireless is sent to gateway, finally by wireless or wire transmission to observer.Similarly, observer can send to sensor node by information in the same way by gateway.
The most of KYN type that adopts of the high-tension switch cabinet of 10kV transformer station at present, its hot spot mainly occurs in the contact of dolly isolating switch in cabinet, and because service condition worsens, it is large that contact resistance becomes, and in the time that large electric current flows through, contact temperature rise is too fast, even can burn.Generally there are twenties high-tension switch cabinets in a transformer station, the contact of a switch cubicle has 6, be distributed in upper and lower sides A, B, on C three-phase, switch cubicle at least will be measured the temperature of 6 points, and for all switch cubicles of whole transformer station, measured point has up to a hundred, can utilize wireless sensor network principle, design a kind of temperature measurement structure of the point-to-multipoint based on radio temperature sensor network, whole thermometric network belongs to the multipoint system of low capacity, can adopt low capacity TDMA point-to-multipoint delivery network structure, mode with cyclic polling conducts interviews to all nodes.Under this background, need to take into full account the communication issue of whole temperature measurement node, the riding position of temperature measuring equipment, and the Software for Design of system, make the temperature of the final all nodes of whole system energy real time on-line monitoring.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network, and the temperature measurement node of all switch cubicles of whole transformer station is monitored, simple in structure, is convenient to install networking; Communication protocol is simple, can adopt single point-to-multipoint monitor temperature, anti-interference strong, is convenient to engineering application.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
High-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network, receive main control end two parts by high-pressure side transmitting terminal and host computer and form, described high-pressure side transmitting terminal comprises multiple high-tension switch cabinets and is placed in the temperature measurement module on each high-tension switch cabinet upper and lower sides A, B, C three-phase contact; Described temperature measurement module comprises power supply, temperature sensor, the first microcontroller chip, the first wireless radio frequency modules for powering, and wherein temperature sensor, the first wireless radio frequency modules are connected with the first microcontroller chip respectively; Described host computer receives main control end and comprises a host computer terminal and radio frequency reception end, and both are connected by RS232 serial bus; Described radio frequency reception end comprises interconnective the second wireless radio frequency modules and the second microcontroller chip; Wherein the first wireless radio frequency modules and the second wireless radio frequency modules are carried out radio communication; Described host computer receives main control end and sends querying command by radio frequency reception end to each high-voltage switch gear temperature measurement module cashier's office in a shop in the mode of cyclic polling, described radio frequency reception end adopts the transceiver mode of point-to-multipoint two-way wireless communication agreement once to receive the temperature data that the above temperature measurement module of high-tension switch cabinet sends, and sends data to host computer terminal and show and store.
As further prioritization scheme of the present invention, described power supply is composed in parallel by two cylindrical lithium high temperature resistant type battery TL-5526.
As further prioritization scheme of the present invention, described first, second microcontroller chip is all selected the control chip of STM32F103RBT6 model.
As further prioritization scheme of the present invention, described first, second wireless radio frequency modules is all selected the radio frequency chip of NRF24L01 model.
As further prioritization scheme of the present invention, the model of described temperature sensor is DS18B20.
As further prioritization scheme of the present invention, when described first, second wireless radio frequency modules work, adopt the EnhanceShockBurstTM transceiver mode of low-power consumption; While work, enter power-down mode.
The present invention adopts above technical scheme compared with prior art, can carry out on-line temperature monitoring to all high-tension switch cabinet hot spots of transformer station, the a set of complete temp measuring system of setting up, can find in time overheating fault, having changed in the past the staff of transformer station, to plan the patrol and detection cycle long, the situation that temperature measuring equipment precision is not high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that host computer receives main control end program flow diagram.
Fig. 3 is high-pressure side transmitting terminal program flow diagram.
Wherein, 1-high-tension switch cabinet; 2-temperature measurement module; 3-radio frequency reception end; 4-host computer terminal.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
High-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network, as shown in Figure 1, receives main control end two parts by high-pressure side transmitting terminal and host computer and forms.Described high-pressure side transmitting terminal comprises multiple high-tension switch cabinets 1 and is placed in the temperature measurement module 2 on each described high-tension switch cabinet 1 upper and lower sides A, B, C three-phase contact; Described temperature measurement module 2 comprises power supply, temperature sensor, the first microcontroller chip, the first wireless radio frequency modules for powering; Measured temperature signal is converted into digital signal by temperature sensor, and the first microcontroller chip is to the temperature data processing of packing, and the first wireless radio frequency modules receives main control end by Packet Generation to host computer.Described host computer receives main control end and comprises a host computer terminal 4 and radio frequency reception end 3, and both are connected by RS232 serial bus; Described radio frequency reception end 3 comprises the second wireless radio frequency modules and the second microcontroller chip; Described radio frequency reception end 3 receives after data, and data upload is shown and stored to host computer terminal 4.
The course of work of the present invention is as follows, is set with N platform high-tension switch cabinet, and N is natural number:
First, second wireless radio frequency modules is selected NRF24L01 module, adopts EnhancedShockBurstTM transceiver mode, and this pattern has three large advantages: as far as possible energy-conservation; Low system cost (low speed microprocessor can be launched through row high-speed radio-frequency); Data aloft the residence time short, anti-interference is high.The temperature measurement module of high-pressure side transmitting terminal, completing after temperature data transmission, enters power-down mode, now current loss minimum.
Under transceiver mode, Frame comprises 6 bytes, the frame head that wherein first byte is Frame, second, third byte is the hardware address of temperature measurement module, the 4th integral part that byte is measured temperature, the 5th fraction part that byte is measured temperature, the 6th byte is CRC check code.
Whole system has 6N temperature measurement node, each temperature measurement node needs to configure different hardware addresss, be configured to respectively 0X01, No. 1 node of 0X01(1 cabinet), 0X01, No. 2 nodes of 0X02(1 cabinet) ... 0X0N, No. 1 node of 0X01(N cabinet) ... 0X0N, No. 6 nodes of 0X06(N switch cubicle).Temperature data contains two bytes, an integral part that byte is temperature, and one is fraction part.
Wireless radio frequency modules has 6 receiving cables, adopts the transceiver mode of point-to-multipoint two-way wireless communication agreement, can receive 6 circuit-switched data simultaneously, receives 6 transmitter modules and send the data of respective channel.Host computer receives main control end and once only needs a thermometric order of transmitting so, just can carry out temperature monitoring to 6 of a switch cubicle temperature measurement node, a cycle period need to send N thermometric order, so just can carry out temperature monitoring to all switch cubicles of whole transformer station.
After program initialization, the wireless radio frequency modules of radio frequency reception end 3 is set to sending mode, sends querying command, six temperature measurement modules 2 of every switch cubicle of cyclic access; Six temperature measurement modules 2 of M platform high-tension switch cabinet 1 are in receiving waiting status, only have and receive the consistent and CRC check of the hardware address of mailing address and this temperature measurement module when correct when temperature measurement module 2, temperature measurement module 2 just starts thermometric and sends temperature data, then enters power-down mode; Radio frequency reception end 3 transfers receiving mode to after giving an order, and receives the temperature data of six temperature measurement modules 2 of M platform high-tension switch cabinet 1, and temperature data is uploaded to host computer terminal 4 by RS232 serial ports, judge whether temperature transfinites, and is presented on screen in real time, and to data storing; Follow 2 the thermometric orders of six temperature measurement modules to M+1 platform high-tension switch cabinet 1.
The temperature measurement module 2 that M platform is opened high-tension switch cabinet 1 enters after power-down mode, after the 1 thermometric working time of N-1 platform high-tension switch cabinet, again enters reception waiting status.Now host computer receives main control end and access after all the other N-1 platform high-tension switch cabinet 1 all temperature measurement nodes, again the temperature measurement module 2 of M platform high-tension switch cabinet 1 is sent to querying command, so circulates, thereby reaches the access mode of cyclic polling.
Host computer as shown in Figure 2 receives main control end program flow diagram, and after program initialization, the wireless radio frequency modules of radio frequency reception end 3 is set to emission mode, sends querying command; Be confirmed whether to receive take over party's confirmation signal, if send and order successfully, after suitable time-delay, be set to receiving mode; Receive after the temperature data that high-pressure side transmitting terminal sends, be sent to host computer terminal 4 by serial communication and show; If temperature over-range, sends warning message; Pass through again suitable time-delay, the wireless radio frequency modules of radio frequency reception end 3 is re-set as to emission mode, enter the temperature acquisition of next switch cubicle.
High-pressure side transmitting terminal program flow diagram as shown in Figure 3, after program initialization, the wireless radio frequency modules of temperature measurement module 2 is set to receiving mode, wakes temperature sensor up and carries out thermometric receiving, and after suitable time-delay, be set to emission mode after querying command; The Packet Generation that comprises temperature information to host computer is received to main control end, and be confirmed whether to receive the confirmation signal; Resend if not, if send successfully, enter power-down mode; Time delay N-1 platform switch cubicle thermometric working time sum, is re-set as receiving mode by the wireless radio frequency modules of temperature measurement module 2, carries out the next thermometric cycle.
Adopt the mode of cyclic polling, appropriate time delay is set, select the fast chip of processing speed, and wireless telecommunications are stable and radio receiving transmitting module fast, the real-time of guarantee thermometric, and the anti-interference of data and accuracy.
The above; it is only the embodiment in the present invention; but protection scope of the present invention is not limited to this; any people who is familiar with this technology is in the disclosed technical scope of the present invention; can understand conversion or the replacement expected; all should be encompassed in of the present invention comprise scope within, therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network, receive main control end two parts by high-pressure side transmitting terminal and host computer and form, it is characterized in that: described high-pressure side transmitting terminal comprises multiple high-tension switch cabinets (1) and is placed in the temperature measurement module (2) on each high-tension switch cabinet (1) upper and lower sides A, B, C three-phase contact; Described host computer receives main control end and comprises a host computer terminal (4) and radio frequency reception end (3), and both are connected by RS232 serial bus; Described host computer terminal (4) sends querying command by radio frequency reception end (3) to the temperature measurement module (2) on each high-tension switch cabinet (1) in the mode of cyclic polling, described radio frequency reception end (3) adopts the transceiver mode of point-to-multipoint two-way wireless communication agreement once to receive the temperature data that the above temperature measurement module of high-tension switch cabinet (2) sends, and sends data to host computer terminal (4) and show and store.
2. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 1, it is characterized in that: the Frame of described wireless communication protocol comprises 6 bytes, the frame head that wherein first byte is Frame, second, third byte is the hardware address of temperature measurement module, the 4th integral part that byte is measured temperature, the 5th fraction part that byte is measured temperature, the 6th byte is CRC check code; While only having the consistent and CRC check of hardware address when mailing address in the querying command that temperature measurement module receives and this temperature measurement module correct, temperature measurement module starts to carry out thermometric order and to radio frequency reception end transmission measured temperature data.
3. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 1, it is characterized in that: described temperature measurement module (2) comprises power supply, temperature sensor, the first microcontroller chip, the first wireless radio frequency modules for powering, and wherein temperature sensor, the first wireless radio frequency modules are connected with the first microcontroller chip respectively; Described radio frequency reception end (3) comprises interconnective the second wireless radio frequency modules and the second microcontroller chip; Wherein the first wireless radio frequency modules and the second wireless radio frequency modules are carried out radio communication.
4. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 2, is characterized in that: described power supply is composed in parallel by two cylindrical high temperature resistant type lithium battery TL-5526.
5. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 2, is characterized in that: described first, second microcontroller chip is all selected the control chip of STM32F103RBT6 model.
6. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 2, is characterized in that: described first, second wireless radio frequency modules is all selected the radio frequency chip of NRF24L01 model.
7. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 2, is characterized in that: the model of described temperature sensor is DS18B20.
8. the high-tension switch cabinet multiple spot monitoring system based on radio temperature sensor network according to claim 2, is characterized in that: the EnhanceShockBurstTM transceiver mode that adopts low-power consumption when described first, second wireless radio frequency modules work; While work, enter power-down mode.
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| CN104765395A (en) * | 2015-03-27 | 2015-07-08 | 山东齐林电力设备有限公司 | Operating environment control system and method for KYN series central switch cabinet |
| CN105758541A (en) * | 2016-04-28 | 2016-07-13 | 厦门理工学院 | Medium- and high-voltage switch cabinet temperature on-line monitoring device |
| CN105928628A (en) * | 2016-06-23 | 2016-09-07 | 华南理工大学 | Switch cabinet temperature acquiring system based on BLE technology |
| CN107290070A (en) * | 2017-08-04 | 2017-10-24 | 河北为信电子科技股份有限公司 | An intelligent energy-saving efficient wireless temperature measurement method and its device |
| CN109186796A (en) * | 2018-10-15 | 2019-01-11 | 江苏久创电气科技有限公司 | A kind of CT formula passive wireless temperature measuring device applied to switchgear |
| CN109506798A (en) * | 2019-01-21 | 2019-03-22 | 赵玉才 | A kind of contact temperature of high-voltage switch cabinet monitoring system |
| CN110514309A (en) * | 2019-09-06 | 2019-11-29 | 杭州纵联科技有限公司 | A kind of radio temperature sensor and the wireless temperature measuring device comprising the sensor |
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Cited By (14)
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| CN104765395A (en) * | 2015-03-27 | 2015-07-08 | 山东齐林电力设备有限公司 | Operating environment control system and method for KYN series central switch cabinet |
| CN104765395B (en) * | 2015-03-27 | 2017-04-12 | 山东齐林电力设备股份有限公司 | Operating environment control system and method for KYN series central switch cabinet |
| CN105758541A (en) * | 2016-04-28 | 2016-07-13 | 厦门理工学院 | Medium- and high-voltage switch cabinet temperature on-line monitoring device |
| CN105928628A (en) * | 2016-06-23 | 2016-09-07 | 华南理工大学 | Switch cabinet temperature acquiring system based on BLE technology |
| CN107290070A (en) * | 2017-08-04 | 2017-10-24 | 河北为信电子科技股份有限公司 | An intelligent energy-saving efficient wireless temperature measurement method and its device |
| CN109186796A (en) * | 2018-10-15 | 2019-01-11 | 江苏久创电气科技有限公司 | A kind of CT formula passive wireless temperature measuring device applied to switchgear |
| CN109506798A (en) * | 2019-01-21 | 2019-03-22 | 赵玉才 | A kind of contact temperature of high-voltage switch cabinet monitoring system |
| CN110514309A (en) * | 2019-09-06 | 2019-11-29 | 杭州纵联科技有限公司 | A kind of radio temperature sensor and the wireless temperature measuring device comprising the sensor |
| CN110726489A (en) * | 2019-12-03 | 2020-01-24 | 安徽工业大学 | Comprehensive testing device for temperature field of power switch cabinet |
| CN110726489B (en) * | 2019-12-03 | 2024-05-28 | 安徽工业大学 | Comprehensive testing device for temperature field of power switch cabinet |
| CN111879428A (en) * | 2020-09-07 | 2020-11-03 | 山东臣乔电气科技股份有限公司 | Wireless temperature measuring device of switch cabinet |
| CN112767670A (en) * | 2021-01-15 | 2021-05-07 | 昇辉控股有限公司 | Wireless temperature measurement system |
| CN116113078A (en) * | 2022-12-28 | 2023-05-12 | 北京临近空间飞艇技术开发有限公司 | A distributed temperature measurement system and method |
| CN116625514A (en) * | 2023-06-16 | 2023-08-22 | 盛虹炼化(连云港)有限公司 | Fault trend pre-judging and alarming use method of wireless temperature measuring device in electrical equipment |
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Application publication date: 20140507 |