Fiber optic temperature sensor for handcart switchgear-INNO

Disebabkan perbezaan kenaikan suhu di dalam dan di luar kotak sesentuh alat suis voltan tinggi, peranti pengukuran suhu dalam talian di luar kotak tidak boleh secara langsung mencerminkan suhu tertinggi kenalan. Oleh itu, model pemanasan litar konduktif telah diwujudkan untuk model suis yang biasa digunakan di bawah keadaan sentuhan biasa dan lemah sesentuh kereta tangan. Pemasangan penderia peranti amaran terlalu panas suis sedia ada dan analisis data pemantauan suhu memberikan rujukan, yang membantu mengesan bahaya terlalu panas dengan tepat pada masanya dan tepat.

Alat suis adalah peralatan elektrik penting yang memainkan peranan dalam menerima dan mengagihkan tenaga elektrik dalam sistem kuasa.. Terima kasih kepada pembangunan pemutus litar voltan tinggi, metal enclosed handcart switchgear with convenient operation and small footprint has become mainstream. With the advancement of intelligence and miniaturization research, the internal structure of switchgear has become increasingly compact and the internal space has become narrower. Due to directly bearing user loads and poor heat dissipation, current carrying faults caused by overheating due to poor contact and other reasons have always been the main safety hazards faced by switchgear.

10kV handcart cabinet circuit breaker handcart isolation contact sistem pengukuran suhu for substations in the field of power electrical equipment

Pada masa ini, the 10kV handcart cabinet mainly adopts a high-voltage metal enclosed handcart vacuum switchgear (referred to as handcart cabinet), which is composed of a circuit breaker handcart room, a busbar room, a cable room, and a relay instrument room. The cabinet is mainly equipped with circuit breakers, transformer semasa, grounding switches, and live display devices. This type of equipment has a compact structure, good sealing, interchangeable handcart, simple maintenance, operasi selamat, and convenient operation.
Namun begitu, with the increase of power load, it was found that the isolation contact of the 10kV handcart cabinet circuit breaker handcart had severe heating. Lebih-lebih lagi, due to the compact structure and good sealing of the handcart cabinet, the working position of the circuit breaker handcart isolation contact is between the handcart room and the busbar room. During normal inspections, the substation duty personnel cannot use infrared thermometers and thermal imaging devices to measure the infrared temperature of the handcart isolation contact. Namun begitu, the test regulations stipulate that the test cycle for the 10kV main transformer cabinet and busbar cabinet is once every 3 tahun, and for the 10kV line cabinet is once every 6 tahun; Such a long maintenance cycle, without strengthened monitoring, will seriously affect the safe and stable operation of the equipment if the temperature is too high. Semasa operasi, there have been incidents where the main transformer of the 10kV handcart cabinet and the isolation contact of the busbar circuit breaker handcart overheated severely, causing the plum blossom contact to burn out, resulting in the transformer being unable to be put into operation and the entire station experiencing a power outage.

The fluorescent temperature measurement device independently developed by FJINNO for handcart switchgear is suitable for online monitoring of temperature of various types of switchgear, real-time monitoring of the temperature of switch contacts and other hot spots, in order to discover abnormal heating fault signs, prevent the occurrence of faults, and provide scientific data basis for “status maintenance” of switchgear through temperature history records, which is of great significance for the safe operation of switchgear equipment.