Design of Digital Rod Control and Position Indication System of Ling’ao Phase II Project

The TXS,digital and redundant techniques are applied in the rod control and position indication system（RGL） to perform the control of power and temperature in the reactor integrally in Ling’ao Phase II project.The high power transistors are used to implement the control of the coils one by one in the control rod drive mechanism（CRDM）.The grouped position detectors are used to monitor the position of the control rod in the reactor core.This paper introduces the requirements and traits of system design of RGL system in Ling’ao phase II.Comparing with the system design of Ling’ao phase I and Qingshan phase II,RGL system in Ling’ao phase II is more convenient for the information exchange,operation and maintenance,and is with high reliability.