CN103471728A - High-voltage switch cabinet wireless temperature measuring system - Google Patents

Abstract

The invention discloses a high-voltage switch cabinet wireless temperature measuring system which comprises a temperature monitoring and early warning workstation, a temperature measuring communication terminal and a plurality of wireless temperature sensors. The temperature monitoring and early warning workstation comprises a management computer and a database. The management computer is connected with the temperature measuring communication terminal through the Ethernet, the wireless temperature sensors and the temperature measuring communication terminal are packaged in a grounding type shielding mode so that anti-electromagnetic interference can be achieved, the 915.00MHz operation frequency based on ISM is applied to wireless data connection so that hurt to the human body and electromagnetic interference in surrounding devices can be avoided, the problem that at the high-voltage, large-current, strong-electromagnetic-interference and high-sealing states, a common sensor can change the creep distance of an electrical device can be effectively solved, the purposes that a high-voltage electrical device is accurately detected online in real time and especially the problem that the hidden danger of overheating exists in each connector position is solved can be effectively achieved, and therefore the application prospect is good.

Description

Translated fromChinese

一种高压开关柜无线测温系统A wireless temperature measurement system for high voltage switchgear

技术领域technical field

本发明属于智能电网技术领域，特别涉及一种高压开关柜无线测温系统。The invention belongs to the technical field of smart grids, in particular to a wireless temperature measurement system for a high-voltage switch cabinet.

背景技术Background technique

目前，由于高压开关柜的密闭性，使柜内导电母排接头、断路器动静触头、隔离开关、电缆终端头接线桩等设备具有裸露高压、位置封闭、空间狭小等特点，无法在带电状态下进行人工巡查测温，因此无法及时发现运行过程中常出现的电气接头表面氧化腐蚀、紧固螺栓松动、触点和母线排连接处老化等问题。传统监测电气联结薄弱点的温升超标情况的方法有：试温蜡片法、示温记录标签法、红外成像仪测温法、光纤测温法。试温蜡片法要求值班人员每隔一定时间巡视一遍所有的试温片，发现融化及时处理，如果因疏忽未及时发现试温片受热融化，将会留下事故隐患；示温记录标签法体积小、价格低廉，缺点是不能反映实时温度值、需要人工定期巡查；红外热成像仪测温直观，但无法透过开关柜柜门测量内部设备发热；光纤测温法在高电压大电流的高压开关柜，较容易造成爬电现象，产生不应有的事故。At present, due to the airtightness of the high-voltage switchgear, the conductive busbar connectors in the cabinet, the dynamic and static contacts of the circuit breaker, the isolating switch, the wiring pile of the cable terminal head and other equipment have the characteristics of exposed high voltage, closed position, narrow space, etc. Therefore, problems such as surface oxidation and corrosion of electrical connectors, loosening of fastening bolts, and aging of contacts and busbar connections that often occur during operation cannot be found in time. The traditional methods for monitoring the temperature rise of the weak point of the electrical connection exceed the standard include: temperature test wax sheet method, temperature recording label method, infrared imager temperature measurement method, optical fiber temperature measurement method. The temperature test wax film method requires the on-duty personnel to inspect all the temperature test plates at regular intervals, and deal with them in a timely manner if they are found to be melted. If the temperature test plates are not found to be heated and melted due to negligence, there will be hidden dangers of accidents; the temperature recording label method is small in size , The price is low, and the disadvantage is that it cannot reflect the real-time temperature value and requires manual regular inspections; the infrared thermal imager is intuitive to measure the temperature, but it cannot measure the heating of the internal equipment through the switch cabinet door; the optical fiber temperature measurement method is used in high-voltage and high-current high-voltage switches Cabinets are more likely to cause creepage and undue accidents.

发明内容Contents of the invention

本发明的目的是克服现有技术不足，提供了一种能够克服高电压、大电流、强电磁干扰及高密封状态，避免传感器改变电气爬电距离，并实时、准确地在线监测高压电气设备、特别是各种接头处存在过热隐患的高压开关柜无线测温系统。The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a device capable of overcoming high voltage, high current, strong electromagnetic interference and high sealing state, avoiding the sensor from changing the electrical creepage distance, and real-time and accurate on-line monitoring of high-voltage electrical equipment, Especially the wireless temperature measurement system of high-voltage switchgear with potential overheating at various joints.

为达到上述目的本发明的技术方案是：一种高压开关柜无线测温系统，包括温度监测预警工作站、测温通信终端和多个无线温度传感器，所述无线温度传感器设置在容易发热的电缆接头、开关触点等被监测处，所述测温通信终端设置在变电站站内并与所述无线温度传感器无线数据连接，所述温度监测预警工作站包括管理计算机和数据库，所述管理计算机通过以太网与所述测温通信终端连接，所述无线温度传感器与所述测温通信终端采用接地式屏蔽封装抗电磁干扰，所述无线数据连接采用基于ISM的915.00 MHz工作频率。In order to achieve the above object, the technical solution of the present invention is: a wireless temperature measurement system for a high-voltage switchgear, including a temperature monitoring and early warning workstation, a temperature measurement communication terminal and a plurality of wireless temperature sensors. , switch contacts, etc. to be monitored, the temperature measurement communication terminal is set in the substation station and connected with the wireless temperature sensor for wireless data, the temperature monitoring and early warning workstation includes a management computer and a database, and the management computer communicates with the The temperature measurement communication terminal is connected, the wireless temperature sensor and the temperature measurement communication terminal are packaged in a grounded shield to resist electromagnetic interference, and the wireless data connection adopts an ISM-based 915.00 MHz operating frequency.

所述无线温度传感器包括分别与控制单元模块连接的无线数据传输模块和温度测量模块。The wireless temperature sensor includes a wireless data transmission module and a temperature measurement module respectively connected to the control unit module.

所述无线温度传感器采用有源RFID和PN数字温度传感技术。The wireless temperature sensor adopts active RFID and PN digital temperature sensing technology.

所述无线温度传感器具有唯一的ID编号。The wireless temperature sensor has a unique ID number.

所述测温通信终端通过管理软件接收所述无线温度传感器发送出的温度数据并上传到所述温度监测预警工作站。The temperature measurement communication terminal receives the temperature data sent by the wireless temperature sensor through the management software and uploads it to the temperature monitoring and early warning workstation.

所述管理计算机从所述测温通信终端采集各监测点的温度数据，传输给所述数据库长期保存，并实时显示监测点的温度变化曲线、进行实时分析，一旦发现温度过热，立即报警。The management computer collects the temperature data of each monitoring point from the temperature measurement communication terminal, transmits it to the database for long-term storage, and displays the temperature change curve of the monitoring point in real time for real-time analysis. Once the temperature is overheated, it will immediately call the police.

本发明通过温度监测预警工作站、测温通信终端和多个无线温度传感器，采用RFID无线射频技术和PN数字温度传感技术，结合计算机网络通信、数据库管理等先进技术开发的高压开关柜无线温度监测系统，所述无线温度传感器与所述测温通信终端采用接地式屏蔽封装抗电磁干扰，所述无线数据连接采用基于ISM的915.00 MHz工作频率，对人体无伤害、对周围设备无电磁干扰，有效地克服了高电压、大电流、强电磁干扰及高密封状态，普通传感器改变电气爬电距离的问题，并有效地实现了实时、准确地在线监测高压电气设备、特别是各种接头处存在过热隐患的目的，具有良好的应用前景。The present invention uses a temperature monitoring and early warning workstation, a temperature measurement communication terminal and multiple wireless temperature sensors, adopts RFID wireless radio frequency technology and PN digital temperature sensing technology, and combines advanced technologies such as computer network communication and database management to develop wireless temperature monitoring for high-voltage switch cabinets system, the wireless temperature sensor and the temperature measurement communication terminal are packaged in a grounded shield to resist electromagnetic interference, and the wireless data connection adopts an ISM-based 915.00 MHz operating frequency, which is harmless to the human body and has no electromagnetic interference to surrounding equipment, effectively It effectively overcomes the problem of high voltage, high current, strong electromagnetic interference and high sealing state, and ordinary sensors change the electrical creepage distance, and effectively realizes real-time and accurate online monitoring of high-voltage electrical equipment, especially overheating at various joints The purpose of the hidden danger has a good application prospect.

附图说明Description of drawings

下面结合附图对本发明作进一步描述：The present invention will be further described below in conjunction with accompanying drawing:

图1是本发明的结构图。Fig. 1 is a structural diagram of the present invention.

具体实施方式Detailed ways

一种高压开关柜无线测温系统，包括温度监测预警工作站3、测温通信终端2和多个无线温度传感器1，所述无线温度传感器1设置在容易发热的电缆接头、开关触点等被监测处，所述测温通信终端2设置在变电站站内并与所述无线温度传感器1无线数据连接，所述温度监测预警工作站3包括管理计算机5和数据库4，所述管理计算机5通过以太网与所述测温通信终端2连接，所述无线温度传感器1与所述测温通信终端2采用接地式屏蔽封装抗电磁干扰，所述无线数据连接采用基于ISM的915.00 MHz工作频率。所述无线温度传感器1包括分别与控制单元模块7连接的无线数据传输模块6和温度测量模块8。所述无线温度传感器1采用有源RFID和PN数字温度传感技术。所述无线温度传感器1具有唯一的ID编号。所述测温通信终端2通过管理软件接收所述无线温度传感器1发送出的温度数据并上传到所述温度监测预警工作站3。所述管理计算机5从所述测温通信终端2采集各监测点的温度数据，传输给所述数据库4长期保存，并实时显示监测点的温度变化曲线、进行实时分析，一旦发现温度过热，立即报警。A wireless temperature measurement system for a high-voltage switchgear, including a temperature monitoring and early warning workstation 3, a temperature measurement communication terminal 2, and a plurality ofwireless temperature sensors 1, and thewireless temperature sensors 1 are set on cable joints and switch contacts that are prone to heat to be monitored , the temperature measurement communication terminal 2 is set in the substation and is wirelessly connected with thewireless temperature sensor 1. The temperature monitoring and early warning workstation 3 includes amanagement computer 5 and a database 4. Themanagement computer 5 communicates with all The temperature measurement communication terminal 2 is connected, thewireless temperature sensor 1 and the temperature measurement communication terminal 2 are packaged in a grounded shield to resist electromagnetic interference, and the wireless data connection adopts an ISM-based 915.00 MHz operating frequency. Thewireless temperature sensor 1 includes a wirelessdata transmission module 6 and atemperature measurement module 8 respectively connected to the control unit module 7 . Thewireless temperature sensor 1 adopts active RFID and PN digital temperature sensing technology. Thewireless temperature sensor 1 has a unique ID number. The temperature measurement communication terminal 2 receives the temperature data sent by thewireless temperature sensor 1 through the management software and uploads it to the temperature monitoring and early warning workstation 3 . Themanagement computer 5 collects the temperature data of each monitoring point from the temperature measurement communication terminal 2, transmits it to the database 4 for long-term preservation, and displays the temperature change curve of the monitoring point in real time, and performs real-time analysis. Once the temperature is overheated, immediately Call the police.

本发明通过温度监测预警工作站、测温通信终端和多个无线温度传感器，采用RFID无线射频技术和PN数字温度传感技术，结合计算机网络通信、数据库管理等先进技术开发的高压开关柜无线温度监测系统，所述无线温度传感器与所述测温通信终端采用接地式屏蔽封装抗电磁干扰，所述无线数据连接采用基于ISM的915.00 MHz工作频率，对人体无伤害、对周围设备无电磁干扰，有效地克服了高电压、大电流、强电磁干扰及高密封状态，普通传感器改变电气爬电距离的问题，并有效地实现了实时、准确地在线监测高压电气设备、特别是各种接头处存在过热隐患的目的，具有良好的应用前景。The present invention uses a temperature monitoring and early warning workstation, a temperature measurement communication terminal and multiple wireless temperature sensors, adopts RFID wireless radio frequency technology and PN digital temperature sensing technology, and combines advanced technologies such as computer network communication and database management to develop wireless temperature monitoring for high-voltage switch cabinets system, the wireless temperature sensor and the temperature measurement communication terminal are packaged in a grounded shield to resist electromagnetic interference, and the wireless data connection adopts an ISM-based 915.00 MHz operating frequency, which is harmless to the human body and has no electromagnetic interference to surrounding equipment, effectively It effectively overcomes the problem of high voltage, high current, strong electromagnetic interference and high sealing state, and ordinary sensors change the electrical creepage distance, and effectively realizes real-time and accurate online monitoring of high-voltage electrical equipment, especially overheating at various joints The purpose of the hidden danger has a good application prospect.

Claims (6)

1. a high-tension switch cabinet wireless temperature measurement system, it is characterized in that: it comprises the temperature monitoring early-warning work station, thermometric communication terminal and a plurality of radio temperature sensor, described radio temperature sensor is arranged on the cable splice of easy heating, the monitored place such as switch contact, described thermometric communication terminal is arranged in Substation Station and is connected with described radio temperature sensor wireless data, described temperature monitoring early-warning work station comprises supervisory computer and database, described supervisory computer is connected with described thermometric communication terminal by Ethernet, described radio temperature sensor and described thermometric communication terminal adopt the anti-electromagnetic interference (EMI) of grounding type barrier enclosure, described wireless data connects the 915.00 MHz frequency of operation that adopt based on ISM.

2. high-tension switch cabinet wireless temperature measurement system as claimed in claim 1, it is characterized in that: described radio temperature sensor comprises wireless data transfer module and the temperature-measuring module be connected with the control module module respectively.

3. high-tension switch cabinet wireless temperature measurement system as claimed in claim 1 or 2, is characterized in that: described radio temperature sensor employing active RFID and PN digital temperature sensing technology.

4. high-tension switch cabinet wireless temperature measurement system as claimed in claim 1 or 2 is characterized in that: described radio temperature sensor has unique ID numbering.

5. high-tension switch cabinet wireless temperature measurement system as claimed in claim 1 is characterized in that: described thermometric communication terminal receives the temperature data that described radio temperature sensor sends out and uploads to described temperature monitoring early-warning work station by management software.

6. high-tension switch cabinet wireless temperature measurement system as claimed in claim 1, it is characterized in that: described supervisory computer gathers the temperature data of each monitoring point from described thermometric communication terminal, be transferred to described database long preservation, and show in real time monitoring point temperature variation curve, carry out real-time analysis, once the discovery temperature overheating, report to the police immediately.

Images