CAJ | 학술논문

建立了一个能准确反映级内部非等熵过程及动态运行特性的汽轮机模型，并将其加载到RELAP5程序中，完成RELAP5汽轮机模型的改进。改进的汽轮机模型是基于级内蒸汽的流动和做功特点，充分考虑了汽轮机结构参数以及汽轮机湿蒸汽流的非平衡两相凝结而形成的凝结冲波现象的影响。通过RELAP5程序内部耦合接口的建立和输入处理子程序的修改，实现了汽轮机模型的加载。以秦山一期300 MW核电厂汽轮机部件为对象，分别利用原RELAP5汽轮机模型和改进的汽轮机模型对其进行稳态和动态的仿真计算和比较分析。结果表明，改进的汽轮机模型能更准确地反映汽轮机动态运行特性。
건립료일개능준학반영급내부비등적과정급동태운행특성적기륜궤모형，병장기가재도RELAP5정서중，완성RELAP5기륜궤모형적개진。개진적기륜궤모형시기우급내증기적류동화주공특점，충분고필료기륜궤결구삼수이급기륜궤습증기류적비평형량상응결이형성적응결충파현상적영향。통과RELAP5정서내부우합접구적건립화수입처리자정서적수개，실현료기륜궤모형적가재。이진산일기300 MW핵전엄기륜궤부건위대상，분별이용원RELAP5기륜궤모형화개진적기륜궤모형대기진행은태화동태적방진계산화비교분석。결과표명，개진적기륜궤모형능경준학지반영기륜궤동태운행특성。
The turbine model which can represent accurately non-isentropic process in the stage of turbine and system dynamic characteristics was developed and added into RELAP5 code ,and the improvement of the turbine model of RELAP5 was implemen-ted .The improved turbine model is based on the characteristics of steam flow and work transfer in the stage of turbine and considers adequately the impact of internal configura-tion parameters and oblique shock which is developed by non-equilibrium condensation of wet steam in turbine .Through building internal coupling interface and the modifying input processing subroutines ,turbine model was developed as a part of RELAP5 hydro-dynamic model . Taking the turbine of Qinshan 300 MW Nuclear Power Plant as an example ,the simulation calculation and comparative analysis were performed for both stead and dynamic cases respectively by both the original and the modified turbine mod-els in RELAP5 code .The results show that the modified turbine model can represent more accurately the dynamic operation characteristics of the turbine .