光纤通道传送线路保护信号的方式及其分析

简介光纤通道纵联保护系统的组成,以及浙江省电网用光纤通道传送线路保护信号专用和复用的2种方式。同时分析了继电保护信号对传输延时、误码、同步质量要求的影响因素,并结合电网工程,利用SDH光纤系统传输保护信号,进行了500kV线路采用的复用光纤通道保护实例计算。

Cold-status Test, Adjustment and Remedy of Failures for CFB

The CFB cold air power field tests cover the calibration test of the main air flow measuring device, primary and secondary fan system, air bed resistance test, test on material layer resistance and critical fluidized air flow, test on fluidized quality, etc.. During the ignition for start-up and adjustment of the boiler it is necessary to carry out bed temperature control, bed pressure control and cold slag system operation. During adjustment of the boiler the normal failures include too high or low temqerature of the bed, too high or low pressure of bed; coking on the bed surface, block of cold slag device, etc. So it is necessary to adjust the bed temperature and pressure properly to ensure safe and stable operation of the boiler.