Chinese manufacturer of the best temperature measurement equipment for high-voltage power equipment-INNO

Why do high-voltage power equipment need temperature measurement

今日, with the continuous development of informatization, electric energy has been widely used in various fields. Various power infrastructure that provides electricity energy is widely distributed throughout the country, undertaking the electricity supply in various regions and fields. その中で, the power station, as the main infrastructure, its supply of electricity and reliability are related to the basic guarantee of production and life in various regions and fields. There are various high-voltage equipment installed in the power station, such as wiring strips, スイッチ, 等. These high-voltage equipment are prone to heating problems due to aging, 緩める, その他の問題. When the heating temperature is high, not only does it need to be shut down for maintenance, but it may also cause serious accidents. 近年では, multiple power outage and fire accidents have occurred in the fields of power transmission, metallurgy and mining, factories and enterprises, urban power supply, 等, caused by overheating of high-voltage electrical contacts such as high-voltage switch contacts, transformer leads, high-voltage busbars, and high-voltage cable connectors, resulting in huge economic losses. Effective monitoring and alarm of overheating of high-voltage electrical contacts is an urgent requirement for safety production. The reliability of high-voltage switchgear under high voltage and high current conditions is closely related to the temperature rise of the isolation switch contacts. During the operation of the power grid, 機械的振動, 接触侵食, and other reasons can worsen contact conditions, 接触抵抗を増やす, cause an increase in contact point temperature, exacerbate contact surface oxidation, and lead to local welding or arc discharge at loose contact points, ultimately causing damage to electrical equipment, 停電, or major accidents such as fires. This type of contact overheating fault accident is not only due to the quality problem of the high-voltage cabinet switch itself, しかし、もっと重要なことは, due to the lack of effective monitoring methods for the temperature rise of the isolation switch contacts at present.

In the field of sealed high and low voltage distribution cabinet equipment, due to the requirements of the working environment of the sealed distribution cabinet, the working environment of the distribution cabinet is sealed. With the aging of various electronic components and cables, the contact points between important electrical equipment and cables will heat up due to excessive contact resistance caused by dust, 緩み, そして酸化. Abnormal heating parts will cause various safety hazards. しかし, due to the sealing requirements of the sealed distribution cabinet, it is difficult for inspectors to observe the internal working situation through conventional inspection methods. さらに, due to the fact that conventional internal temperature measurement equipment is non-contact temperature measuring instruments and is easily affected by various electromagnetic or environmental factors such as high and low temperatures inside the distribution cabinet, inaccurate temperature measurement and unstable operation may occur. Disadvantages of. したがって, accurate online real-time temperature measurement of sealed distribution cabinets has become an urgent problem that needs to be solved in the industry.

Traditional temperature measurement methods for high-voltage equipment

With the continuous increase of electricity load, high-voltage isolation switches often experience abnormal temperature rise in switch contacts, bus connections, and other parts due to aging, 接触不良, or excessive contact resistance during long-term operation. If not detected and maintained in a timely manner, it will cause serious equipment accidents. したがって, solving the problem of switch overheating is the key to preventing such accidents, and achieving real-time temperature monitoring is an important means to ensure the safe operation of high-voltage equipment. しかし, due to the limitations of high-voltage operation, the heating part of the contact point of the high-voltage isolation switch is difficult to achieve ordinary online temperature measurement for monitoring. The existing temperature measurement technology can only detect which one or some of the high-voltage distribution equipment is in an overheated state, and cannot test which part of the overheated high-voltage distribution equipment is causing the overheat situation. It cannot determine the location of the faulty components, which creates difficulties for equipment maintenance. Installing sensors for temperature monitoring in high-voltage equipment and using infrared thermometers for temperature measurement during inspections are traditional methods of temperature monitoring, which have the problem of low accuracy in temperature measurement results. 現在のところ, infrared temperature measurement technology is generally used for monitoring in the market. Infrared temperature measurement is easily affected by environmental factors, and there are still significant limitations and difficulties in the application of temperature measurement in dangerous places. The market urgently needs a temperature measurement device that can implement monitoring in dangerous places, with low cost and high reliability.

蛍光光ファイバー温度測定 device applied in the field of electric power:

開閉装置の温度測定

Due to the rapid increase in the number of high-voltage switchgear applications in the distribution network, data shows that by the end of the 1990s, there were more than 270000 distribution switches operating in the national power system, which doubled compared to the previous year. しかし, the high-voltage switchgear in the 10kV distribution network is affected by various factors such as daily operation, external damage, and overloaded lines, resulting in a huge proportion of overheating faults. Especially during peak summer and high load periods of the power grid every year, the overall damage caused by overheating of the contacts inside the switchgear often occurs.

サーキットブレーカーの温度測定

The temperature change of the switchgear contacts is the key point for online temperature rise monitoring of the switchgear. 現在のところ, low-voltage feed switches or other combination switches use circuit breakers or contactors that are modular in design. Dynamic and static contacts are inevitably used in modular design. しかし, the use of dynamic and static contacts will inevitably increase a fault point because they need to be frequently plugged in and out, and the current here is generally too high. In case of poor contact, it is easy to have high temperature, which can easily burn out the dynamic and static contacts.

光ファイバー温度測定 変電所内

In production, accidents caused by overheating of electrical equipment connection points account for a large proportion of overall electrical accidents. 適時に検出されなかった場合, such hidden dangers will pose a great threat to safe power supply. In order to timely detect hidden dangers and avoid accidents, it is necessary to implement online real-time temperature monitoring and intelligent alarm for each connection point of electrical equipment.

Temperature measurement of electrical cabinet

高圧電気キャビネットによる火災の最大の原因は、長期の経年劣化や接触不良により、高圧電気キャビネット内の個々の接点や回路が多量の熱を放散できなくなることです。, 局所的な高温を引き起こす, 発火点温度を超えても, そして火災を引き起こす. 適時検査を強化するとともに, これらの異常点に対しては、隠れた危険を速やかに排除し、事故の芽を摘む必要があります。.

の特徴 fluorescence fiber optic thermometer

FJINNO’s fluorescence fiber optic thermometer has the characteristics of accurate temperature measurement, 高解像度, 電磁干渉に対する耐性. The fluorescence fiber optic thermometer can be reliably applied in environments with strong electromagnetic interference, especially in harsh temperature measurement environments. And combined with advanced fiber optic temperature measurement technology, the communication control between the upper computer and the data acquisition system microcontroller, the interface is beautiful, the operation is simple, and it can monitor and save data in real-time online, improving the automation and intelligence of the system.