High-voltage Switch Cabinet Temperature Fault Warning Based On Fiber-optic Temperature Measurement

The modem society dependence to electric energy has been extremely high, the bigger power consumption density, the higher the area dependence to the electricity, this has brought forward the more and more high request to the power supply unit reliability as a result. Be the dyadic handcart switch assemblies being put into use at present commonly, the breaker and the assemblies adopt attachment plug linkup, between the assemblies and the handcart wait to all arouse to touch head bad contact, contact resistance enhances , touch the head temperature rising , burning down and bringing about power failure because fabrication , transportation and installation, these phenomenon lays stress on, and affects a maximum in heavy current switch assemblies for example incoming line cashier. For avoiding these accident occur, develop one kind device to monitor immediately touching the head temperature rises appears very urgent.In various sensor technology, fiber optic sensor developed rapidly in recent years, and has been able to use optical sensors to achieve pressure, temperature, vibration, current, voltage, magnetic field and other physical testing, these applications are attributed to the simple structure, using easily, resistant to high pressure, high temperature and anti-electromagnetic interference, and other characteristics of the role of long distance and the high sensitivity because of volume Small and light weight.High-voltage Switch assemblies at present for most of the work has focused on the on-line monitoring, most can do real-time warning, is unable to advance warning, to take preventive measures to avoid accidents from occurring or to further expand and improve power supply reliability Sexual.Papers on the basis of software system development first introduce the principles of fiber optic temperature measurement and the application in the power system and then introduce on-line monitoring system of contact temperature on High-voltage Switch assemblies, the most important is introducing temperature forecast, breakdown early warning on the basis of temperature measurement. Papers consider various factors, the use of methods of temperature forecasts and projections way to compare the results, running through the actual data for validation.This software system's development can realize the online monitor to the high voltage switch assemblies contact temperature, the fault equipment forewarns ahead of time, enhances the power supply reliability effectively, lengthens the useful life of equipment.