Operation counter and counting method of lightning arrester for transmission line
A transmission line and arrester technology, applied in the transmission line arrester action counter and its counting field, can solve the problems of not clear vision, difficulty in accurately detecting the pointer value of the counter, etc., and achieve the effects of facilitating detection, improving efficiency and accuracy.
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Embodiment 1
[0032] A power transmission line surge arrester action counter 100, such as figure 1 As shown, it includes: a coil driving structure 2 , a dial 4 , an encoder 5 , a linkage shaft 3 , and a power supply 6 . in,
[0033] The dial 4 and the encoder 5 are fixedly connected to the linkage shaft 3 respectively, and the linkage shaft 3 moves when the coil drive structure 2 operates; the encoder is also connected to the monitoring terminal 7 of the transmission line through the CAN bus; the encoder is connected to the power supply.
[0034] As the most important lightning protection device to protect the normal operation of the transmission line, the lightning arrester needs to monitor the working status of the lightning arrester in real time and accurately to avoid damage to the transmission line. The number of operations of the lightning arrester is an important basis for judging the operation of the lightning arrester. Check all operating arresters on the power transmission line, ...
Embodiment 2
[0036] On the basis of the first embodiment, the coil driving structure 2 includes: a magnet 22 and a collection coil 21 surrounding the magnet 22 , and the linkage shaft 3 moves when the magnet 22 moves.
[0037] When there is an inrush current flowing through the acquisition coil, it will cause the acquisition coil to have polarity, and the polarity of the acquisition coil is opposite to that of the magnet, which will cause the magnet to move (shake). If the magnet and the linkage shaft are not fixedly connected, the linkage shaft may On one side of the magnet, the action of the magnet hits the linkage shaft, causing the linkage shaft to move. The dial and the encoder are respectively fixed on the linkage shaft, and the linkage shaft simultaneously drives the dial and the encoder to count.
[0038] Preferably, the encoder is a ten-bit absolute value encoder.
[0039] Preferably, the model of the encoder is BRT38-SOM1024-RT1.
[0040] Preferably, the encoder is connected to ...
Embodiment 3
[0049] A counting method 200 of the operation counter of the transmission line lightning arrester as described in the first or second embodiment, such as image 3 shown, including:
[0050] Step 210 , when the surge current when the arrester operates flows through the grounding down conductor of the arrester, the surge current causes the coil driving structure to act.
[0051] Step 220, the coil driving structure causes the linkage axis to move.
[0052] Step 230 , synchronizing the linkage axis causes the dial and the encoder to move, and the encoder performs one encoding and saves the encoded value.
[0053] Step 240 , when the encoder receives the command to acquire the arrester action times sent by the monitoring terminal, it sends the coded value to the monitoring terminal through the CAN bus.
[0054] When the arrester senses a lightning strike, an inrush current is generated, and the magnetic core coil induces the inrush current, and drives the mechanical linkage shaf...
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