Improvement and Application of Technical Scheme for Power Variations Test of HPR Nuclear Power Plant

The power variations test tests the matching capability of nuclear power plant's primary and secondary loop, and verify the power plant's load tracking capacity. The power variations test failure probability is extremely high in GEN-II nuclear power plants. Compared with other GEN-III nuclear power plants, the power variations test of HPR nuclear power plant requires higher load change rate and range. This paper introduces how to improve the success rate of HPR power variations test by adding power-boron concentration coordinated control and temperature-power coordinated control, and improve the matching capability of primary and secondary loops. Finally, the power variations test of the first HPR in western China is completed, and the power range of load change of the GEN-III nuclear power plants is expanded.