Judgment method of small hydroelectric generating set speed controller guide vane signal abnormal fault

Abstract

The invention discloses a judgment method of small hydroelectric generating set speed controller guide vane signal abnormal fault. The method comprises the following steps: 1) measuring and recordingrunning data of set guide vane; 2) computing set vane fastest opening rate, the fastest closing rate without sequence closing, and the fastest closing rate with the sequence closing; 3) recording thereal-time openness of the set vane; 4) computing the vane opening or closing rate of the current moment; and 5) judging whether the set vane signal is in fault. By monitoring the set vane real-time data and comparing with computed standard data, a quick judgment standard of the hydroelectric generating set vane state abnormity is provided for the technicist, so that the technicist can quickly acquire the current running state of the set vane, an operation of monitoring the hydraulic turbine set in all around by halting can be avoided, and the equipment utilization rate of the hydroelectric generating set can be improved.

Description

technical field [0001] The invention relates to the field of data analysis of governors of small hydropower units, in particular to a method for judging abnormal faults of guide vane signals of governors. Background technique [0002] With the automation and intelligence of hydroelectric units, the use of automation systems to diagnose the abnormal state of equipment has been widely valued. The turbine governor is one of the very important auxiliary control equipment of the hydroelectric generating set, and its operation quality directly determines the safe and stable operation of the hydroelectric generating set. The governor of the hydroelectric unit mainly controls the start / stop of the unit and adjusts the load. For the turbine, the governor directly controls the guide vane of the turbine, and the operating status of the guide vane of the turbine directly reflects the status of the governor during operation. For small hydropower units, the protection design requirements...

AI Technical Summary

Problems solved by technology

For small hydropower units, the protection design requirements of the units are not as complete as those of large hydropower stations, the environment is relatively poor, and the equipment failure rate of hydro turbines is higher. However, if the actuators of the governors of the units fail at present, generally only through Various complete tests are carried out to test its performance indicators. For small hydropower units, the cost is relatively high. At the same time, the unit must enter the shutdown state, which reduces the number of hours of use of the unit. Therefore, a relatively simple and effective analysis method is needed to judge its breakdown is very necessary

Images