虚拟DCS控制器在核电站DCS样机调试的应用研究

The Applied DCS Virtual Machine in DCS Prototype of NPP

研究核电站DCS系统的验证调试技术对于我国核电技术的发展和核安全的保障具有重要的意义。传统的逻辑调试工作在实际控制器上进行,无法进行高效复杂的逻辑调试(如PID调节,闭环逻辑控制调试等),而且频繁实验操作对硬件的使用寿命也造成了影响。针对传统测试方法的不足,提出了在DCS样机逻辑调试中使用虚拟DCS控制器代替实物控制器的方法,其优点在于:1)针对虚拟DCS控制器软件进行操作,信号的注入相当于变量的赋值,操作简便而且效率很高;2)虚拟DCS控制器无需硬件设备的支持,减轻了对设备的依赖,逻辑组态和工程调试可以交叉迭代进行;3)虚拟DCS控制器可以直接下装并运行DCS组态工程,能与DCS真实控制器并行联调。实际的调试效果证明DCS虚拟机能够有效的完成组态逻辑调试,提高调试效率。

The research on the technology of DCS commissioning in NPP has significance on promoting nuclear power technology and protecting nuclear safety.The conventional commissioning was directly carded out in the real controller,which couldn＇t have the complex logic experiments done. Furthermore,frequent experiments must have made great influence on the service life of devices.ln view the deficiency of the conventional method,this paper proposed that the DCS commissioning could be executed in virtual DCS controllers instead of real controllers.The advantage apparent：1）The engineers make use of instruments to inject signals into the real controllers while those are just value assignments in virtual controllers, which makes the operation more simple and effeetive;2）The virtual controllers don＇t rely on hardware devices,which makes the cross iteration of logic configuration and commissioning possible;3）The configuration engineering can be directly downloaded into the virtual DCS controllers,who can run in parallel with real controllers.The application result shows that the virtual DCS controllers can be competent for DCS logic commissioning,and enhance the efficiency of commissioning.