Analysis of steam erosion in steam-driven feedwater pumps during load rejection of supercritical dual-pressure heating units
YAN Yu-feng
ZHU Liang-jun
LONG Yan-chang
Abstract：Load rejection tests are crucial for examining the dynamic characteristics of the control systems of thermal power generating units,and they also serve as a measure to prevent overspeed accidents.These tests can assess the dynamic characteristics of the power unit's control system and verify the adaptability of the design of various auxiliary equipment and related systems to load rejection conditions.By analyzing the process of a load rejection test and the issues encountered during the test at a certain power plant's large-scale ultra-supercritical double extraction back pressure heating unit,corresponding measures are taken to prevent accidents for this type of unit and operational suggestions are provided to ensure continuous and stable heating supply under the premise of equipment safety after load rejection.
Keywords：supercritical dual-pressureload rejection testhigh-pressure deaeratorsteam-driven feedwater pumpsteam erosion
Publication Date：2024-08-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 112-115 )