The Best Fluorescent Lifetime Fiber Optic Temperature Sensor for Transformer Winding Temperature Measurement

Fiber optic temperatura sensor, Intelihenteng monitoring nga sistema, Giapod-apod nga fiber optic manufacturer sa China

In the power system, maintaining the normal operation of power transformers is the basic guarantee for reliable power supply of the entire system. Sa bag-ohay nga mga tuig, China’s electricity demand has grown rapidly, and the development direction of the power system is towards ultra-high voltage and large capacity. Busa, the failure rate of transformers has also increased. According to relevant data statistics, the average accident rate of 110kV and above transformers is very high, especially in recent years, the accident rate of insulation aging, transformer winding breakdown, and burning caused by overload operation of transformers is also very high. The life of high-voltage oil immersed power transformers mainly depends on the life of solid insulation (fiber paper), and temperature, umog, and oxygen are the main factors that promote insulation aging. Thermal effect is the decisive factor of transformer aging, and the hot spot temperature determines the service life of transformers.

The advantages of fiber optic sensors

With the rapid development of optoelectronic technology, the birth of fiber optic sensors has provided a new technological means for transformer temperature measurement. Compared with traditional electrical signal measurement sensors, fiber optic sensors have many advantages such as small size, pagsukol sa corrosion, pagsukol sa electromagnetic interference, high temperature resistance, and high voltage resistance, which can effectively monitor the hot spot temperature inside power transformers. The most mature technology currently is temperature sensors based on fluorescent fibers, and the most widely used is point type fiber optic temperature measurement products.

The method of temperature measurement for transformer windings

The direct measurement method involves burying sensors near the wire in the winding, and then obtaining the temperature value near the sensor through a detection instrument. It is an online detection device. The direct measurement method can measure the hot spot temperature of the winding in real time and accurately; By starting the refrigeration equipment in a timely manner, accidents caused by overheating of transformer windings can be avoided. The most typical applications of this method are fluorescent fiber optic temperature sensors and semiconductor fiber optic temperature sensors.

Compared with other sensors, factors such as detector degradation, fiber bending, and light source have little impact on the system of fluorescence lifetime type fiber optic temperature sensors. It is easier to correct the sensor probe, and the measurement accuracy and sensitivity are higher in the medium to low range, which is suitable for the requirements of internal temperature measurement in transformers. Sa pagkakaron, fluorescence lifetime type fiber optic temperature sensors are used in the field of transformer winding temperature measurement both domestically and internationally.

Advantages of Fiber Optic Temperature Measurement System for Oil Immersed Transformers

Ang fluorescence fiber optic temperature measurement system can truly reflect the internal temperature changes of transformers. PT100 can only test the top oil temperature, middle oil temperature, and bottom oil temperature. The theoretically calculated hot spot temperature data has a large deviation and shows a non-linear trend over time, and the time to reach a stable temperature is long, which is not conducive to transformer maintenance. In contrast, the theoretically calculated PT100 oil temperature data is close to the measured PT100 oil temperature data. Hinuon, the time required to stabilize the temperature is long, which has a negative impact on transformer maintenance.

Ang fluorescence fiber optic temperature measurement system for oil immersed transformers introduces fluorescence fiber optic temperature measurement technology into the transformer, achieving distributed online monitoring of the internal temperature of the transformer. Mahimo kini nga ma-monitor ug makit-an ang mga temperatura sa init nga lugar sa tinuud nga oras, dako nga pagpalambo sa pagkasensitibo ug kasaligan sa detection. Ang fiber optic winding temperatura online monitoring system alang sa mga transformer mahimong direkta, tinuod nga panahon, ug tukma nga pagsukod sa winding temperature, pagkab-ot sa internal nga temperatura monitoring sa mga transformer, tukma nga pagsukod sa temperatura sa mga windings sa transformer, kontrola ang mga sistema sa pagpabugnaw sama sa mga fan ug mga cooling pump sa tinuod nga oras, gipalugwayan pag-ayo ang kinabuhi sa serbisyo sa mga transformer sa kagamitan sa kuryente, pagsiguro sa suplay sa kuryente sa panahon sa peak load, ug pagpakunhod sa wala giplano o wala damha nga mga aksidente ngadto sa ubos nga lebel, sa ingon nagpauswag sa produksiyon sa kuryente sa mubu nga gasto ug nagpauswag sa kaluwasan ug kasaligan sa tibuuk nga operasyon sa sistema.