TESTING OF IMPROVED ALGORITHMS CONTROLLING ENERGY RELEASE IN VVER-1000 IN MANEUVERING REGIMES AT THE TIANWAN NUCLEAR POWER PLANT (CHINA)

摘要

The salient features of improved algorithms adopted at the Tianwan nuclear power plant for controlling the energy released in a WER-1000 core are examined. The optimal configuration of the controlling groups is chosen in the first two power-generating units, the reactor power can be varied automatically under the control of an automatic power regulator, the boron regulation system makes it possible to determine the first-loop makeup automatically, and a modern version of the Imitator Reactora program has been installed. The results of testing the algorithms in the No. 1 unit in regimes with single and cyclic (daily) power maneuvers are presented. The tests of single power maneuvers were combined with dynamic tests of equipment. The operation of the power-generating unit in a daily load schedule was tested separately. Five daily load-change cycles were conducted during these tests.