Water-saving and efficiency-improving adjusting method for Kaplan turbine and adjusting system

Abstract

The invention discloses a water-saving and efficiency-improving adjusting method for a Kaplan turbine and an adjusting system. The method is characterized in that a speed governor simulation system, aspeed governor control system and waterhead, flow, a guide vane opening, a blade angle, unit active power and other information of a practical unit during power generation operation acquired by various sensors are combined, so that optimum joint data is found out; iteration is continuously performed through continuous optimizing of the joint data of the practical unit, so that optimum control onthe Kaplan turbine unit is realized; the adjusting system which is built based on the method comprises a speed governor control system (1); a vibration and swing degree sensor (2), a waterhead sensor(3), a flow sensor (4), an active power sensor (5), a guide vane opening sensor (6) and a blade opening sensor (7) are connected onto the speed governor control system (1); the speed governor controlsystem (1) is connected with the speed governor simulation system (8) through data communication. The water-saving and efficiency-improving adjusting method has the advantages that efficiency can be improved, and operation safety is good.

Description

technical field [0001] The invention relates to an adjusting method and an adjusting system of a paddle type water turbine, in particular to a method for saving water and increasing efficiency of a paddle type water turbine and an adjusting system. Background technique [0002] The hydraulic turbine regulating system in the existing hydraulic turbine control system is a complex nonlinear system in which water, machine and electricity interact and restrict each other. It uses the turbine speed governor as the system controller and the hydroelectric generating set as the system control object to form a closed-loop control system. Its performance will be directly related to the benefits of the hydropower plant and the safe operation and power supply quality of the entire power system connected to it. [0003] When the rotary propeller unit is running, it is necessary to maintain a certain association relationship between the guide vanes and the blades to ensure that the unit a...

AI Technical Summary

Problems solved by technology

However, due to the installation and operating conditions of the unit, manufacturing errors, and differences between prototypes and model machines, the association relationship usually provided by the turbine manufacturer may be different from the real association relationship. Therefore, the governor manufacturer There are bound to be differences between the association curve set according to the association relationship provided by the turbine manufacturer and the real association relationship; when the existing paddle turbine governor is running, it is easy to make the unit work in vibration during frequency modulation and peak adjustment area, it is difficult to meet the non-linear control requirements of the propeller turbine, resulting in low efficiency and unsatisfactory operation safety.

[0004] Therefore, the existing rotary paddle turbines have the problems of low efficiency and unsatisfactory operation safety

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