摘要
目前对于核电站系统二回路的模块化仿真建模技术已较为成熟,而一回路还未完全实现模块化。利用运行在Sim Exec平台上的THEATRe软件,以秦山一期核电站为仿真对象,建立冷却剂系统仿真模型,进而对模型进行仿真研究,误差可控制在0.5%以内;将主回路中的自然循环蒸汽发生器进行模块化建模,并通过方案优化,采用边界交换的方法将蒸汽发生器模块与系统主回路进行耦合,耦合前后系统运行参数误差不超过1%;通过瞬态提升功率比较模块化模型与环路模型的瞬态特性,最终得出对自然循环蒸汽发生器进行模块化建模仿真方法可行的结论,并由此提出改进方法及其在实际建模仿真中的建议。
ABSTRACT:At?present,the?modular?simulation?techniques?of?the?second?loop?in?nuclear?reactor?system?have?been?mature,while?the?primary?loop?can?not?be?fully?modular?simulated.By?using?the?THEATRe?software?running?on?the?SimExec?platform,taking?the?Qinshan?phase?I?NPP?as?the?simulation?object,a?coolant?system?model?can?be?established,the?errors?can?be?controlled?within?0.5%;Modular?simulating?the?natural?circulation?steam?generator,then?coupled?the?SG?with?the?primary?loop,the?distinctions?between?the?modular?system?with?the?former?system?are?no?more?than?1%;Comparing?the?transient?characteristics?of?the?modular?model?with?that?of?the?former?loop?model?by?ascending?the?power?transiently,ultimately?draw?a?conclusion?on?the?focus?whether?the?modular?simulation?techniques?of?the?SG?in?the?primary?loop?is?feasible,and?thus?give?suggestions?on?improvements?and?recommendations?of?the?modular?simulation?methods.
出处
《科技创新导报》
2014年第33期56-59,共4页
Science and Technology Innovation Herald