1.電氣接點(diǎn)測溫的必要性

電力系統(tǒng)的一次系統(tǒng)一般由供電線路（包括架空線路和電纜）、變壓器、母線、開關(guān)柜等電氣設(shè)備組成。其相互之間存在大量的電氣連接點(diǎn)，由于電流流過產(chǎn)生熱量，所以幾乎所有的電氣故障都會(huì)導(dǎo)致故障點(diǎn)溫度的變化。例如架空線路搭接點(diǎn)、電纜接頭、電纜中間連接處、電纜敷設(shè)彎折處、高壓電纜的局部放電、高壓開關(guān)柜的動(dòng)靜觸頭及其他連接處、低壓電氣連接處等位置過熱是大型事故的征兆,也是事故多發(fā)的重災(zāi)區(qū)。

Necessity of temperature measurement at electrical contacts

The primary system of a power system is generally composed of power supply lines(including overhead lines and cables), transformers, busbars, switchgear and other electrical equipment. There are a large number of electrical connection points between them, and almost all electrical faults will cause the temperature change of the fault point due to the current flowing through it and generating heat. For example, overheating is a sign of large accidents and a major disaster area, such as overhead line connection, cable joint, cable middle connection, cable laying bend, partial discharge of high-voltage cable, dynamic and static contact of high-voltage switch cabinet and other connections, and low-voltage electrical connection.

2.當(dāng)前現(xiàn)狀

多年來，由于技術(shù)水平的限制，雖然曾利用紅外測溫儀、紅外成像儀、感溫電纜、傳統(tǒng)的點(diǎn)式測溫系統(tǒng)希望解決上述問題，但都無法實(shí)現(xiàn)開關(guān)柜內(nèi)如斷路器、刀閘聯(lián)接點(diǎn)和觸頭測溫。目前，國內(nèi)電力測溫主要應(yīng)用紅外點(diǎn)測儀和光纖測溫儀，而在線方式由于無法解決高壓絕緣問題，所以高壓開關(guān)的觸點(diǎn)等空間有限的電氣設(shè)備基本上都是處于無監(jiān)控的狀態(tài)下運(yùn)行，存在重大安全隱患。

Current Status

For many years, due to the limitations of the technical level, although infrared thermometer, infrared imager, temperature sensing cable, traditional point-type temperature measurement system have been used to solve the above problems, but can not achieve the switch cabinet such as circuit breaker, the connection point and contact temperature measurement. At present, domestic electric temperature measurement mainly uses infrared point measuring instrument and optical fiber temperature measuring instrument. However, the on-line method cannot solve the problem of high-voltage insulation, so the electrical equipment with limited space, such as the contact of high-voltage switch, basically operates in a completely unmonitored state, with major safety hazards.

3.項(xiàng)目背景信息 Project background information

國內(nèi)一家專業(yè)提供工業(yè)+AI 解決方案的公司，從埃及當(dāng)?shù)匾患页商讖S了解到，他們有個(gè)房建項(xiàng)目，配電間開關(guān)柜需要安裝無線測溫產(chǎn)品。該公司從網(wǎng)上找到了安科瑞，目前先做一套演示柜，測量柜內(nèi)電氣節(jié)點(diǎn)溫度，由于沒有啟動(dòng)電流，選擇我司帶電池?zé)o線測溫傳感器ATE200二代，搭配接收器ATC450-C，并且在柜子上做一個(gè)本地顯示。

Project background information

A domestic company specializing in industrial and AI solutions learned from a electrical complete plant in Egypt that they had a building construction project recently. The switchgear in the distribution room needs to be installed with wireless temperature measurement products. The company has found Acrel from the Internet. At present, they first need to make a set of demonstration cabinet to measure the temperature of the electric contact in the cabinet. Since there is no starting current, we will choose the second generation of wireless temperature sensor battery powered ATE200, with receiver ATC450-C, and make a local display on the cabinet.   

4.無線測溫產(chǎn)品的優(yōu)點(diǎn)

    近年來，無線測溫產(chǎn)品開始出現(xiàn)。內(nèi)置電池和無線發(fā)射模塊的測溫傳感器安裝于各測溫點(diǎn)，由于體積小，且無需任何接線，其電氣安全性得到保證。傳感器周期性的將測溫?cái)?shù)據(jù)無線發(fā)送至接收單元，接收單元發(fā)送數(shù)據(jù)至接收單元。

    對(duì)配電間內(nèi)電氣設(shè)備的溫度檢測，采用集中接收和顯示的方案，大量減少工程安裝工作量，縮短安裝時(shí)間，使得重要變電站的測溫改造得以方便實(shí)現(xiàn)，對(duì)于新站的建設(shè)也具有同樣的優(yōu)勢(shì)。

    無線測溫產(chǎn)品滿足了變電站開關(guān)柜節(jié)點(diǎn)的實(shí)時(shí)測溫的需求，在減少投資，減少工程安裝量，減少維護(hù)人工和費(fèi)用方面優(yōu)勢(shì)明顯。實(shí)施本項(xiàng)目，能夠合理提升供電系統(tǒng)的安全可靠運(yùn)行水平，減少停電故障，對(duì)于保證正常生產(chǎn)、減少事故造成的損失具有重大意義。

Advantages of wireless temperature measurement products

In recent years, wireless temperature measurement products began to appear. The temperature sensor with built-in battery and wireless transmitter module is installed at each temperature measuring point. Due to its small size and no wiring, its electrical safety is guaranteed. The sensor periodically sends the temperature data wirelessly to the receiving unit, which sends the data to the receiving unit.

For the temperature detection of electrical equipment in the distribution room, the scheme of centralized reception and display is adopted, which greatly reduces the engineering installation workload and shortens the installation time, making it convenient to realize the temperature measurement transformation of important substation, and also has the same advantage for the construction of new stations.

Wireless temperature measurement products meet the demand of real-time temperature measurement at switch cabinet contacts in the distribution room, and have obvious advantages in reducing investment, engineering installation, maintenance labor and cost. The implementation of this project can effectively improve the safe and reliable operation level of the power supply system and reduce power failure, which is of great significance to ensure the normal production and reduce the loss caused by accidents.

5.本展示柜用到的產(chǎn)品 Products used in this display cabinet

（1）電池供電型無線溫度傳感器

Battery-powered wireless temperature sensor

安裝于發(fā)熱部位，采集溫度量并通過無線方式傳輸?shù)膫鞲衅鳌?/span>

  Sensor installed in a heating area that collects temperature and transmits it wirelessly.

 （2）接收單元Receiving unit

（3）顯示單元Displaying unit

6.典型應(yīng)用Typical Application

參考文獻(xiàn) Bibliography

1、Solutions for enterprise micro-grid system

編輯：安科瑞 孫斌

公司：江蘇安科瑞電器制造有限公司