外文翻譯--蒸汽發(fā)生器水位模糊控制研究-文庫(kù)吧資料
2025-05-22 05:57本頁(yè)面
【正文】 控制研究 蒸汽 發(fā)生器是壓水反應(yīng)堆式核電廠里的一個(gè)重要的設(shè)備。 or operation uses the maximum operation. Using a very small operation fuzzy implication, fuzzy rules integrated with great operations center Defuzzification method used. IV. SIMULATION EXAMPLES A pressurized water reactor steam generator in Chinese Qinshan nuclear power station has empirical model G1 (s), G2 (s) below: where Ps denote the rated load. When load at 15% ~ 90% Ps, use (6) and (8)。 when the error is small, the output control volume should givepriority to prevent overshoot. Where ec is negative ,it shows that water level has a rising trend, if the water level is high at this time, then we should reduce the valve opening signal。 on the other hand, the increase in water flow GW made it greater than steam load, and cause water level increases linearly. Comprehensive two factors, after the step increase of the water flow, the water level rise has a time delay process, showing a down then up. B. Dynamic Characteristics under Steam Load Disturbance Suppose feed water flow GW remains unchanged, and steam load GS step increases, on the one hand the water level will flow down because the steam flow rate is greater than the water flow rate. On the other hand, as the steam load increased, vapor pressure is reduced。 GW (s) for the impact of the water flow to the steam generator water level。 QW for the water flow。中文 2064 字 Research on Fuzzy Control for Steam Generator Water Level I . INTRODUCTION The steam generator is one of the main devices in PWR nuclear power plant, in order to ensure the safety of nuclear power plant during operation。 the steam generator?s water level must be controlled in a certain range. When the nuclear power plant is running, as the steam flow or the water flow changing, the amount of boiling bubbles in the steam generator will change due to local pressure or temperature change, the instantaneous water level showed “false water level” phenomenon . The existence of “false water level” made it difficult to control the water level. The introduction of feedforward control to the traditional singleloop PID control can, in a certain
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