سنسورهای دمای فیبر نوری INNO ,سیستم های مانیتورینگ دما.
The necessity of temperature measurement in switchgear
It is an important device in the power system and widely used in various industries. The switchgear or distribution cabinet is a general term for the motor control center, which is the final level equipment of the distribution system; The distribution cabinet is used in situations with concentrated loads and multiple circuits, responsible for distributing the electrical energy of a certain circuit of the higher-level distribution equipment to the nearest load. The temperature of the switchgear is high during use, and the electrical components operating in high-temperature environments are prone to leakage and self ignition. بنابراین, it is necessary to measure the temperature of the switchgear, as the temperature of the electrical components inside the cabinet needs to be monitored during use to avoid safety accidents caused by high temperatures. Due to issues such as poor contact of the contacts and overcurrent of the load, the temperature of the contacts in the switchgear can be too high, causing damage to the contacts and resulting in power outages. بنابراین, it is necessary to monitor the temperature of the contacts in real time, and when it exceeds the threshold, an alarm can be triggered for timely maintenance and handling.
How many types of temperature measurement for switchgear
The commonly used methods currently include using infrared thermometers for regular inspections or using online monitoring equipment for real-time monitoring, as there may be issues with missed inspections and untimely detection during regular inspections. بنابراین, online monitoring is currently commonly used. Online monitoring mainly uses fiber optic temperature measurement, infrared probes, سنسورهای دمای بی سیم and other online measurements.
اندازه گیری دمای بی سیم for switchgear
در حال حاضر, temperature measurement methods for power plants, پست ها, high-voltage lines, high-voltage electrical appliances, wind turbine bearings, distribution cabinets, passenger trains, glass processing, tobacco processing and other equipment and places with strict temperature range requirements and relatively dangerous measurement environments mainly include manual measurement and wired measurement. The drawbacks and shortcomings of these methods are: اولا, manual measurement poses great risks because the equipment and places being measured are high voltage, high-altitude, and difficult to access, which can easily cause harm to measurement personnel. The wireless temperature measurement system includes a wireless temperature measurement terminal, a wireless temperature measurement management machine, and a on-site computer. The wireless temperature measurement terminal converts the measured temperature parameters into wireless signals and transmits them to the wireless temperature measurement management machine. The wireless temperature measurement management machine transmits the temperature parameters to the on-site computer through Ethernet.
اندازه گیری دمای فیبر نوری برای تابلو برق
The fiber optic temperature measurement system for switchgear is a fluorescence fiber optic temperature measurement device developed by FJINNO, which is applied to high-voltage switchgear. It has a long service life and is resistant to electromagnetic interference. It can provide effective protection for temperature monitoring of high-voltage switchgear and other equipment in substations, judge the equipment’s ability and service life, and provide scientific basis for safe operation of equipment. Adopting internationally advanced fluorescent fiber optic temperature sensing technology, it has the advantages of high voltage resistance, بدون تداخل الکترومغناطیسی, long-term reliability, and easy expansion. It is used for real-time online monitoring of the temperature of monitoring points such as generators, تابلو برق فشار قوی, ring main cabinets, outdoor and underground cable joints in power generation and supply systems.
Mainly for real-time online monitoring of abnormal temperature changes in the dynamic and static contacts, باسبارها, سوئیچ ها, and other contacts of power switchgear in substations. با این سیستم, users can monitor the temperature changes in the monitored parts of the switchgear in real time on both local and remote upper computers, و گزارش های زنگ لحظه ای را صادر کنید (هشدارها, آلارم ها, و فراتر از حد) based on the temperature changes. در عین حال, با کمک عملکردهای قدرتمند رایانه بالایی, امکان تجزیه و تحلیل چرخه تغییر دما وجود دارد, مشاهده منحنی های زمان واقعی و تاریخی, پیش بینی تغییرات در موقعیت های هشدار, and achieve remote data exchange among multiple users. The system consists of fluorescent fiber optic (including sensing head), فرستنده دمای فیبر نوری, fluorescent fiber optic communication software, system meter head, و غیره.
فلورسانس fiber optic online temperature measurement system is mainly designed for real-time online monitoring of parts that are prone to high temperature during long-term operation of switchgear and transformers (upper and lower contacts and joints of switchgear; سیم پیچ ترانسفورماتور, iron cores, و غیره), to avoid unnecessary losses caused by high temperature due to heavy loads.
The fluorescence fiber optic online temperature measurement system mainly includes: optical path system, photoelectric conversion system, data acquisition and processing system, and data display and output equipment. The light from the light source is transmitted to an external sensor through a light splitter. The sensor reflects back light of a specific wavelength, which is then transmitted to the photoelectric conversion system through the light splitter. The photoelectric detector converts the wavelength signal into an electrical signal, collects the electrical signal from the photoelectric detector, processes it, and converts the electrical signal into a digital signal. Transfer to the data display output device through a network or serial port.
Functional characteristics of fiber optic temperature measurement system for switchgear
امنیت: در مقایسه با سنسورهای سنتی, fiber optic temperature sensors have high temperature resistance, passivity, and are not affected by strong electric and magnetic fields.
زمان واقعی: Real time uninterrupted online monitoring ensures that equipment is in a monitored state at all times, and safety is not affected by human factors, minimizing the probability of accidents that may be caused by personnel negligence.
پیشرو بودن: The fluorescent optical fiber online temperature measurement system collects data through the sensor wavelength shift, which is a digital measurement, avoiding the problem that traditional sensors are vulnerable to interference factors such as power fluctuations, transmission line losses, و غیره.
دقت: Digital measurement technology ensures temperature measurement accuracy and repeatability, with a temperature measurement accuracy of level 1 and a temperature resolution of 0.1 ℃. It also has the characteristic of fast response speed, which can fully meet the needs of power system safety.
ثبات: The temperature sensor is only sensitive to temperature and is not affected by factors such as vibration, impact, جابجایی, رطوبت, و غیره. The system is stable and reliable.
سنسور دمای فیبر نوری, سیستم مانیتورینگ هوشمند, تولید کننده فیبر نوری توزیع شده در چین
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