A real-time automatic diagnosis and intelligent correction method for the neutral position of the main power distribution of the governor

Abstract

A method for real-time automatic diagnosis and intelligent deviation correction of the main distribution electrical center of a speed governor, which is composed of two parts: an automatic diagnosis method for the drift of the main distribution electrical center of the speed governor and an intelligent deviation correction method for the main distribution electrical center of the speed governor. The automatic diagnosis method of the neutral position drift of the main power distribution of the governor: the electronic control system of the governor collects in real time the data such as the guide vane opening Y given by the PID module of the governor hydraulic servo system, and the main distribution position M adjustment cycle and other data . Judging whether the relevant data satisfies the criterion for the median drift of the governor’s main power distribution; if the criterion is met, stop the diagnosis and enter the intelligent deviation correction link for the main distribution center; if the criterion is not met, return to continue real-time data collection for the main distribution Median drift diagnosis. The invention aims to solve the problem of frequent adjustment of the main distribution and guide vanes of the governor caused by the drift of the neutral position of the main power distribution of the governor during the grid-connected operation of the unit, and realize the real-time neutral position of the main power distribution of the speed governor of the power unit in grid-connected operation. Automatic diagnosis and intelligent deviation correction.

Description

technical field [0001] The invention belongs to the field of automatic control of hydropower stations, in particular to a real-time automatic diagnosis and intelligent deviation correction method for the main power distribution center of a governor. Background technique [0002] During the grid-connected operation of the hydro-generator set, due to the influence of the main distribution position sensor by temperature changes, unstable power supply voltage and other factors, the output main distribution position feedback signal inevitably has a zero drift phenomenon, which leads to the main distribution of the governor. The median produces an offset. The drift of the neutral position of the main distribution electrical system is serious to a certain extent, which will lead to small and frequent fluctuations in the opening of the guide vane, frequent twitching of the position of the main distribution spool, abnormal increase in fuel consumption of the hydraulic follower system...

AI Technical Summary

Problems solved by technology

It aims to solve the problem of frequent adjustment of the main distribution and guide vanes of the governor caused by the drift of the neutral position of the main power distribution of the governor during the grid-connected operation of the unit, and realize the real-time automatic diagnosis of the neutral position of the main power distribution of the speed governor of the power grid-connected unit and intelligent correction

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