Testing of a Reactor Control System in Closed-Loop

Paper describes hardware closed-loop testing, when controller is connected with simulator. Such dynamic testing tool can save time and reduce risk before commission of new control systems. It allows to detect failures and to find proper gains setup of controller in factory. Testing of Reactor control system is showed as example. Reactor controller is a part of control system modernization at Dukovany nuclear power plant and it was built on SPINLINE 3 technology. Closed-loop testing has allowed deeply verification of controller before installation on site. Tests results have confirmed that behavior of new digital controller is the same as old analogue one. Closed-loop testing was one of major assumptions of unit commissioning on time.