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The AP1000 relies on the non-nuclear steam reversal test of the No. 1 steam turbine generator set of the project. The key parameters of the turbine generator set rotor vibration, displacement and bearing temperature meet the acceptance criteria, key parameters such as main pump current and primary circuit temperature. smooth.
The non-nuclear steam reversal of the steam turbine generator set is the first large-scale joint test between the nuclear island and the conventional island. The purpose is to use the energy generated by the main circuit of the primary circuit to raise and boost the primary circuit and generate steam on the secondary side of the steam generator. As a steam source, the turbine generator set is rushed to the rated speed. Non-nuclear steam reversal can expose the problems existing in the manufacture and installation of steam turbine generator sets in advance, and take corresponding corrective measures in advance to ensure the normal grid-connected power generation and safe operation.
The non-nuclear steam rushing of the Sanmen No. 1 steam turbine generator set was carried out for a total of four speed-up processes. The first speed target platform is 400 rpm (revolution per minute), the second and third speed target platforms are 1060 rpm, and the fourth speed target platform is 1500 rpm. In order to ensure the success of the test, the National Nuclear Engineering Commissioning Center organized the technical, electrical, instrument control and other professional departments to fully cooperate with the owner's commissioning team. In the test preparation stage, three field simulation exercises were organized, and the desktop deduction was organized twice to ensure the clear division of labor and responsibility. People; and pre-released the risk plan and the test organization to ensure that the test goes smoothly.
The pilot valve of the main steam valve of the steam turbine was slowly opened, and the steam turbine began to increase. The non-nuclear steam reversal test of the steam turbine generator set of the three-door No. 1 unit officially started. Then the steam turbine speed was successfully stabilized at the 400 rpm speed platform, and the parameters and functions were verified. During the subsequent speed increase and test, the parameters of the steam turbine are stable and the control and protection functions are verified. At 21:23 on November 13, the steam turbine was shut down from the 1500 rpm speed platform; at 23:28, all the test projects were completed. At this point, the non-nuclear steam reversal test of the Sanmen No. 1 steam turbine generator set was successfully completed.
At present, the hot test of the No. 1 unit of the project is under intense pressure. The non-nuclear steam reversal of the steam turbine generator set is a key test project in the hot test. The successful completion of the project not only promotes the progress of the hot test, but also relies on the project. The construction of the three-door nuclear power project has written a lot of color.