A state alarm method of hydroelectric unit based on multi-dimensional variable sample information database

Abstract

The invention discloses a hydroelectric generating set state alarm method based on a multidimensional variable sample information base. The method includes the following steps of firstly, obtaining state parameters and multidimensional variables; secondly, setting up the multidimensional variable sample information base; thirdly, setting up and determining an initial multidimensional variable information sample base; fourthly, setting up a real-time multidimensional variable information sample base; fifthly, determining an alarm basis and an alarm cycle; sixthly, giving an alarm. The method has the advantages of covering the shortage of the conventional alarm of a hydroelectric generating set, overcoming the defects of the false alarm, the judgment of various working conditions and the non-trend judgment, being feasible in implementation and strong in operability, setting up comprehensive information parameters which represent the state of the hydroelectric generating set, being high in alarm accuracy and large in information amount, being capable of being widely used for guiding operation, maintenance and fault diagnosis of a hydroelectric power plant, and preventing serious accidents from occurring to 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 alarming the state of a hydroelectric unit based on a multidimensional variable sample information library. Background technique [0002] With the rapid development of my country's economy and electric power industry, the proportion of hydropower in the power grid is increasing year by year, and hydropower units are playing an increasingly important role in peak regulation, frequency modulation, phase modulation and ensuring the safe operation of large power grids. . As the main equipment of a hydropower plant, the safety and stability of the hydroelectric unit is directly related to the safety of the hydropower plant and the stability of the power grid. Therefore, effective monitoring and alarming of the working status of the hydroelectric unit is already a key factor related to the safety of the hydropower plant, the sta...

AI Technical Summary

Problems solved by technology

As we all know, the operating status of hydroelectric units, including parameters such as unit vibration, swing, and water pressure pulsation, are all related to factors such as water head, unit load, temperature, speed, and generator excitation. The state will deteriorate temporarily during operation, and the conventional alarm system does not treat it differently according to the operating conditions of the unit, so there may be situations where the vibration swing amplitude of the unit increases instantaneously and leads to false alarms

Moreover, the conventional alarm method does not monitor and alarm the status change trend of the unit. When the unit has potential safety hazards that have caused the operating state to change and the alarm value has not been reached, the conventional alarm system cannot monitor and alarm in time.