Fiber optic sensor measurement of knife gate temperature-INNO

Why does the knife switch need temperature measurement

With the increasing demand for power reliability, a certain component in a substation heats up severely and loses its original function, which means it will cause major power outages to users or major equipment damage accidents to the substation. The knife switch components of the substation, due to their rotatability and frequent operation, have always been the most vulnerable components to overheating and damage in the substation. In the safe operation system of power equipment, temperature is an important parameter to verify the normal operation of primary equipment. The connection parts of power equipment, due to changes in climate, equipment foundation, processing technology, environmental pollution, severe overload operation, contact oxidation, その他の理由, cause loose crimping, 圧力が不十分です, 接触部分の変更, 最終的には接触抵抗が増加します. 電流が流れると, 気温が上がります, 機器の老朽化を引き起こす, 絶縁性の低下, そして深刻な場合には, アーク短絡を引き起こす, 燃え尽きた機器, 設備被害範囲の拡大, 機器の耐用年数を短縮する, 機器の火災や爆発を容易に引き起こす可能性もあります, 特に可動ナイフスイッチの動的および静的接触部分, 故障率が高いもの, これらすべてが電力機器の安全な動作を常に脅かしています.

ナイフスイッチの温度測定方法について教えてください。

従来の検査方法では、デュアルライトカメラを備えた無人航空機の手動操作または自動プログラム制御が使用されます。 (可視光カメラと熱赤外線カメラ) 検査用. それから, visible light photos and infrared photos are exported from the unmanned aerial vehicles. それから, by comparing the visible light photos, the knife switch equipment and contact points on the infrared photos are found and marked. ついに, the marked infrared photos are read using temperature measurement software to display the temperature of the knife switch contact points. しかし, due to the fact that there are at least dozens of infrared photos taken during a single inspection, and each photo contains more than 20 knife switch devices, manually marking the contact points of the knife switch on the infrared photos is very cumbersome and time-consuming. さらに, it is difficult to directly find the knife switch equipment from infrared photos, and it is often necessary to compare visible light photos taken at the same time to determine the position of the knife switch in infrared photos. Manual marking may result in missed or incorrect labeling. 同時に, the inspection frequency of substations (at least once a day) is high, and the manual marking work is very time-consuming. There is an urgent need for a more efficient method to replace it.
The traditional temperature measurement methods for substation knife switches include infrared thermal imaging temperature measurement, point infrared temperature measurement, そして ワイヤレス温度測定. The above temperature measurement methods either have low real-time performance, 高コスト, or are prone to damage and cannot automatically adjust the temperature. They cannot automatically cut open or close when the temperature of the knife switch suddenly rises.

Knife switch fiber optic temperature measurement device

の 蛍光光ファイバー温度測定システム is a device that controls the high-speed electric telescopic rod to work quickly and cut off when the temperature of the knife switch arm exceeds a certain set value, avoiding damage to electrical equipment caused by high temperature of the knife switch. さらに重要なことは, due to the large temperature difference between the two sides of the temperature difference generator on the knife switch, the power generation is large, and the fan simultaneously cools down on one side of the temperature difference generator. The temperature difference generator absorbs a large amount of heat. When the temperature of the knife switch arm drops below the set temperature, the controller controls the high-speed electric telescopic rod to quickly close the knife switch arm, achieving intelligent and automatic control of the knife switch, saving manpower and material resources, and reducing economic losses; Display the temperature signal directly and drive the local alarm device to send out information, providing a remote alarm output interface for connection to other information systems. Send the alarm and data information far to the monitoring center for real-time monitoring of the status of the unmanned substation switch, timely repair, and avoid economic losses.