Research on Bypass Capacity Test Method of 1000MW FCB Functional Thermal Power Unit

A bypass capacity test method suitable for 1000MW FCB functional thermal power unit is proposed. Using the desuperheating water flow parameters which are easy to obtain on site and with high accuracy, the bypass steam flow which is difficult to measure is calculated, so as to realize the accurate monitoring and real-time regulation of the bypass steam flow, and the obtained steam flow of the high-pressure and low-pressure bypass is converted into the corresponding flow under the initial steam parameters by using Friuli Greig Formula, which is compared with the main steam initial parameter flow standard to check whether the actual bypass system meets the functional operation requirements of the unit FCB. The calculation shows that this method is easy to implement and has high accuracy. It can improve the stability and economy of unit FCB operation through timely regulation of bypass steam flow, and has good application value.