Method for performing remote analysis and diagnosis decision-making on operation state at bearing bushing temperature of hydroelectric generating set

Abstract

The invention discloses a method for performing remote analysis and diagnosis decision-making on an operation state at bearing bushing temperature of a hydroelectric generating set. The method comprises the following steps: establishing a state analysis foundation database for the bearing bushing temperature of the hydroelectric generating set and a bushing temperature failure database; remotely monitoring and acquiring important parameters, such as the bearing bushing temperature of the hydroelectric generating set; by adopting a two-stage pattern analysis method for the bearing bushing temperature of the set, i.e. analysis is performed on the change of the bearing bushing temperature under the working conditions of the starting-up mode and the operation mode of the hydroelectric generating set, and by adopting a three-stage trend analysis method, i.e., analysis is performed on the bushing temperature steep rise stage, the bushing temperature slow change stage and the bushing temperature steady state stage of the bearing bushing temperature in a time slot from starting up to steady-state operation of the hydroelectric generating set, performing comprehensive analysis on indexes, such as temperature rise average speed, instantaneous speed, maximum speed and steady-state bushing temperature change rate during operation at the bearing bushing temperature of the hydroelectric generating set, and finally, performing the remote analysis and the diagnosis decision-making on the operation state at the bearing bushing temperature of the hydroelectric generating set.

Description

technical field [0001] The invention belongs to the technical field of hydroelectric power generation equipment, and in particular relates to a method for remote analysis, diagnosis and decision-making of the bearing pad temperature operation state of a hydroelectric unit. Background technique [0002] The safe and stable operation of hydroelectric generating units is related to the safety of hydropower plants and social public safety. The safe operation of hydroelectric units is closely related to the operating status of the bearings of each part of the unit. The bearing shoe temperature is an important parameter that directly reflects whether the bearings are safe to operate. In the past, the analysis method of the bearing pad temperature was too simple and could not deeply reflect the changing characteristics, rules and trends of the bearing pad temperature of the hydropower unit, resulting in frequent occurrence of pad burning events and seriously affecting the safe opera...

AI Technical Summary

Problems solved by technology

To ensure the safe operation of hydroelectric unit bearings in the unmanned and few-person-attended mode of hydropower plants, a remote analysis and decision-making technology for the safe operation of hydroelectric unit bearings is urgently needed. At present, there is no effective method in this regard in China