Method and system for optimization of blade association of turbine governor with fine-grained distinction function

Abstract

The invention discloses a method and system for optimizing the joint connection of the blades of a water turbine governor with the function of finely distinguishing. Subdividing the water head to obtain the given value H of the water head 给定 ; Carry out the subdivision of the given blade to obtain the given value D of the blade 给定 ; Get the head measurement value H 测 , blade measured value D 测 , calculate the first association value L(i) of each association point i, calculate the second association value M(i) of each association point i, and calculate the final output blade association value of each association point i Joint value Y H给 , the present invention can improve and ensure that the governor’s actual implementation of the association relationship is consistent with the optimal association relationship, and can ensure accurate measurement and calculation of the blade association, avoiding low precision and large calculation accumulation errors caused by frequent changes in water head. It can be applied to all kinds of hydraulic turbine governor association devices to solve problems such as transfer equipment failure.

Description

technical field [0001] The invention relates to the control technology of blades of a water turbine governor of a hydroelectric power plant, in particular to a method and system for optimizing association of blades of a water turbine governor with a fine-grained distinction function. Background technique [0002] The governor blade association device of the hydropower plant is the control mechanism of the governor blade. Its basic function is to input the water head detected by the water head sensor and the blade position detected by the blade sensor, and generate an output value based on multiple association values. Give the propeller operating mechanism. For example, the original water turbine blade association device of Hongjiang Power Plant uses head measurement to calculate only 10 association values ​​in PLC, and each output value is generated by interpolation. However, due to the rapid change of the water head of the bulb tubular unit, coupled with the large deviatio...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention: Aiming at the above-mentioned problems in the prior art, in order to solve the situation that the vibration of the unit increases significantly under the condition of low water head and heavy load, a water turbine governor blade with a fine distinction function is provided The association optimization method and system, the present invention can improve and ensure that the actual implementation of the association relationship of the governor is consistent with the optimal association relationship, can ensure the accurate measurement and calculation of the blade association, and avoid low precision caused by frequent changes in water head , large cumulative error in calculation, failure of transfer equipment and other problems, it can be applied to all kinds of hydraulic turbine governor association devices

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