Скоростная характеристика фронта напряжения как информационного параметра в системах диагностики и защиты рентгеновского компьютерного томографа

Abstract

Malfunctions that arise in the operation of diagnostics apparatus, can be divided into external, associated with poor-quality power supply system, and internal, resulting from the breakdown of blocks and elements of the devices themselves. The X-ray computer tomograph (RCT) is particularly sensitive to low-quality power supply. All the parts of the RCT possess high inductance L. Voltage drops result in internal overvoltages on the blocks of the RCT. To protect RCT, the use of high-speed characteristics of the voltage front change as the information parameter when detecting the emergency modes of the power supply network can treble the speed of the network mode detecting. Changes in the value of the speed characteristics at various values of the non-sinusoidal voltage, voltage deviations and frequency oscillations in the power supply network have been investigated. The range of the speed characteristic change for detecting voltage drops and voltage deviations have been developed.as well as the range for the normal operation of RCT and the range of the transition to an emergency mode