Method for judging abnormity of single-machine closed-loop regulation function of active power of hydraulic generator

Abstract

The invention discloses a method for judging abnormity of a single-machine closed-loop regulation function of active power of a hydraulic generator. The method comprises the following steps: S1000) setting a module for monitoring whether the active power of a unit is in a normal interval or not; S2000) setting a module for monitoring whether the active power acquisition of the unit is normal or not; S3000) setting a module for monitoring whether the active power of the unit is normally adjusted or not; S4000) setting a module for monitoring whether the active power of the unit can be adjustedin place or not; S5000) when the active power closed-loop regulation function of the unit single machine is switched on, starting the monitoring modules arranged in the steps S1000 to S4000; and if any one of the S3000 module and the S4000 module monitors abnormality, or any one of the S1000 module and the S2000 module monitors abnormality in a plurality of continuous operation periods or a plurality of continuous time periods, quitting the single-machine active power closed-loop regulation function. According to the invention, four abnormality monitoring modules are adopted to comprehensivelyjudge the abnormality of the active power closed-loop regulation function of the single machine, so that the occurrence of missed judgment can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of automatic control of hydropower generation, in particular to a method for judging the abnormality of the active power closed-loop adjustment function of a single hydroelectric generator. Background technique [0002] The control of active power output in hydropower stations generally adopts that the active power target value of the whole plant is first distributed to each hydro-generator unit (referred to as unit) through the automatic generation control function (Automatic Generation Control, referred to as AGC), and then each unit is passed through the computer respectively. The closed-loop adjustment method of the monitoring system Programmable Logic Controller (PLC) or the governor, in which each unit performs closed-loop adjustment of the active power of a single unit by itself is the basis and core of the active output control of the hydropower station. [0003] In some abnormal situations, for exam...

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Problems solved by technology

[0011] In order to solve the above technical problems, the purpose of the present invention is to provide a method for judging the abnormality of the active power closed-loop adjustment function of a single-unit hydro-generator, which can be used when the closed-loop adjustment function of the active power of a single-unit hydro-generator fails or cannot work normally. Judge the abnormal situation in time, and exit the single-unit active power closed-loop adjustment function of the unit, so as to keep the active power output of the hydropower station and the operation of the power generation equipment in a relatively stable state as much as possible

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