Reversible hydraulic turbine set characteristic curve obtaining method, device and equipment and storage medium

Abstract

The invention provides a reversible hydraulic turbine set characteristic curve obtaining method and device, equipment and a storage medium. The method comprises the following steps that S1, the unit rotating speed n11, the unit flow q11, the unit output p11 and the specific rotating speed corresponding to an existing hydraulic turbine are obtained; s2, on the basis of a weak similarity theory, selecting an original water turbine characteristic curve close to the specific speed of the existing water turbine according to the selection principle that the difference between the specific speeds does not exceed + / -7%; if not, eliminating the characteristic curve of the water turbine; s3, correcting the characteristic curve of the original water turbine by adopting a curve error tension and compression correction processing method; and S4, replacing the processed characteristic curve with the characteristic curve of the existing water turbine. By means of the curve error tension and compression correction processing method, the problems that before the characteristic curve of the existing water turbine does not exist, the method for obtaining the characteristic curve of the existing reversible unit is not mature enough, and the obtained characteristic curve of the unit is poor in precision can be effectively solved.

Description

technical field [0001] The invention relates to a method, device, equipment and storage medium for obtaining the characteristic curve of a reversible water turbine unit, which is suitable for water conservancy and hydropower projects, especially for pumped storage power station projects. Background technique [0002] Different types of water turbines with different water heads and flows often have different unit characteristic curves (also known as water turbine characteristic curves). The characteristic curve of the unit is similar to the "electrocardiogram" of the unit. It expresses the characteristics of the unit in a graphical way. When there are defects in the design of the turbine, it can be reflected from its characteristic curve, which is of great significance to the design of hydropower stations. [0003] At present, there are three main methods to obtain the unit characteristic curve: [0004] 1. Obtain the characteristic data of the model unit from the model expe...

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Problems solved by technology

[0009] The first purpose of the present invention is to solve the problems in the prior art that the method of obtaining the characteristic curve of the reversible unit is not mature enough, and the accuracy of the obtained characteristic curve of the unit is poor, and provides A method for obtaining the characteristic curve of a reversible hydraulic turbine unit, which enables the calculation accuracy of the hydraulic transition process to meet the design requirements of the existing hydropower station, and further promotes the safety and economic benefits of the hydropower station

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