How to install a high-voltage substation fiber optic temperature measurement system-INNO

The sistem pengukuran suhu gentian optik boleh memastikan operasi yang stabil bagi suis voltan tinggi. Terdapat banyak faktor biasa yang mempengaruhi operasi suis voltan tinggi yang selamat dan boleh dipercayai, dan sentuhan yang lemah pada sambungan konduktif adalah salah satu faktor yang paling penting. Sistem pengukuran suhu gentian pendarfluor jenis titik yang dibangunkan secara bebas oleh FJINO mempunyai rangkaian lengkap model dan harga yang berpatutan.

Disebabkan oleh haba yang dihasilkan oleh aliran arus, hampir semua kerosakan elektrik akan menyebabkan perubahan suhu pada titik kerosakan. Terlalu panas pada titik sambungan kenalan dinamik dan statik, sambungan kabel, dll. alat suis pencawang akibat sentuhan yang lemah adalah bahaya kemalangan yang serius. Dalam beberapa tahun kebelakangan ini, kemalangan yang sama telah berlaku di pencawang, menyebabkan gangguan bekalan elektrik dalam kes ringan dan letupan dan kebakaran dalam kes yang teruk, menjejaskan keselamatan secara serius.

Biasanya terdapat selang masa daripada kepanasan lampau pada sambungan gear suis hingga berlakunya kemalangan. Jika anomali suhu dapat dikesan awal dan ditangani dengan cepat, ia akan sangat mengurangkan kejadian kemalangan elektrik. Melalui analisis dan penyelidikan, telah diputuskan untuk menggunakan sistem pengukuran suhu dalam talian gentian optik jenis titik suis voltan tinggi. Dengan menggunakan kaedah pemantauan dalam talian, suhu operasi peralatan elektrik, terutamanya suhu lokasi sensitif, boleh dipantau. Ini adalah cara penting untuk amaran kerosakan dan pencegahan kemalangan, dan pengesanan awal tanda-tanda pemanasan sambungan peralatan dalam suis boleh mengelakkan kemalangan malignan daripada berlaku

The optical fiber temperature measurement system is progressiveness in the industry. FJINO has decided to apply the point type pengukuran suhu gentian optik system to the temperature monitoring system of the high-voltage cabinet in the power grid, in order to achieve comprehensive requirements for temperature monitoring inside the high-voltage cabinet and improve the safety and feasibility of substation operation. Taking the 10kV high-voltage switchgear of the 110kV substation as an example, this will be explained in detail.

Solution for Installation Quantity of Sistem Pengukuran Suhu Gentian Optik for High Voltage Switchgear in Substation

The substation mainly undertakes the power supply tasks for production and daily life, dengan sejumlah 39 10kV high-voltage switchgear. We need to implement online monitoring of the temperature of the upper static contacts (A, B, C) three-phase, lower static contacts (A, B, C) three-phase, dan kepala kabel (A, B, C) three-phase of the 39 alat suis, dengan sejumlah 351 titik pengesanan (39 × 9:351). Each switchgear is equipped with one 9-channel thermometer installed in the instrument room on the top of the switchgear, and one centralized monitoring host is configured in the main control room. The fiber optic sensor is installed at the junction of the static contact and the busbar. Special fixtures with high insulation, high thermal conductivity, high elasticity, rintangan suhu tinggi, and corrosion resistance are selected for fixing the sensing head. Optical fibers are routed along the corners of the cabinet and weak current cable trays, or tied together with insulation ties with secondary wires inside the cabinet. This monitoring system has complete monitoring and alarm functions, always ensuring that high-voltage equipment is in a monitored state, completely unaffected by human factors. Apabila penggera berlaku, the system emits corresponding sound and light alarm signals, and the duty personnel have sufficient time to take corresponding measures. This is particularly important for avoiding accidents or causing fires.

Application and Implementation of Point Type Fiber Optic Temperature Measurement System for High Voltage Switchgear in Substation

The 35kV switchgear and 110kV switchgear in three substations are equipped with high-voltage switchgear point type fiber optic online temperature measurement systems. Pada masa ini, the temperature monitoring of 1110 kV substation and 2 35kV substations has been completed, which solves the problem of real-time online temperature monitoring of the contacts and cable joints of 35kV and 10kV high-voltage switchgear in the substations, providing a guarantee for their safe operation. The system has been running normally for 2 years and has successfully detected 9 abnormal temperature fluctuations caused by poor contact at the conductive connection and 1 fiber breakage fault, and issued alarm messages. After troubleshooting, the system displayed that the temperature at the measuring point had returned to normal.

The application of point type penderiaan gentian optik technology in temperature monitoring of high-voltage switchgear in transmission systems has achieved real-time online temperature detection at key equipment points (kenalan, sambungan kabel). Pada masa yang sama, we have adopted specially designed optical fibers with high voltage levels, which meet the requirements of high-voltage power switchgear equipment for fiber withstand voltage levels due to their electrical insulation, keselamatan yang wujud, dan imuniti terhadap gangguan elektromagnet. They also have advantages such as high transmission bandwidth, isyarat stabil, rintangan kepada gangguan elektromagnet, ketahanan terhadap lenturan, kekuatan impak yang tinggi, dan sambungan pantas; The material of the fiber optic sheath has characteristics such as high temperature resistance, rintangan penuaan, rintangan kakisan, penebat tinggi, and non adhesion, which can adapt to harsh environments such as high voltage, suhu tinggi, and strong electromagnetic fields.