Method for generating operating overall characteristic curve of prototype turbine

Abstract

The invention relates to the three-dimensional model conversion technology and aims at solving the problems that in the prior art, when an overall characteristic curve of a model turbine is converted into an operating overall characteristic curve of a prototype turbine, an auxiliary line needs to be drawn, the workload is large, man-made influence factors are more, and working efficiency and drawing precision are low. According to a method for generating the operating overall characteristic curve of the prototype turbine, according to the overall characteristic curve of the model turbine, coordinates of points on equivalent efficiency lines of the prototype turbine, coordinates of points on equivalent output lines of the prototype turbine, coordinates of points on equivalent draft height lines of the prototype turbine, coordinates of points on equivalent guide vane opening lines of the prototype turbine and the like are calculated through computer software, on the basis, equivalent efficiency lines, equivalent output lines, equivalent draft height lines, equivalent guide vane opening lines, output limiting lines and the like of prototype turbine are drawn on H-P and Q-P plane coordinate graphs respectively, and then operating region division of the prototype turbine is further realized. The method is suitable for converting the overall characteristic curve of the model turbine the operating overall characteristic curve of the prototype turbine.

Description

technical field [0001] The invention relates to a three-dimensional model transformation technology, in particular to a method for transforming a comprehensive characteristic curve of a model water turbine into an operation comprehensive characteristic curve of a prototype water turbine. Background technique [0002] The prototype water turbine refers to the machine in the hydropower station that converts the mechanical energy of the water flow into the mechanical energy of the runner, so that the runner and the main shaft can overcome various resistances and run continuously. It is called the "heart" of the hydropower station. The play of economic benefits plays a decisive role. The prototype turbine is transformed from the model turbine according to the principle of similarity, so the comprehensive characteristic curve of the prototype turbine is also obtained by similar transformation and correction from the comprehensive characteristic curve of the model turbine. [000...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art when converting the comprehensive characteristic curve of the model water turbine into the comprehensive characteristic curve of the operation of the prototype water turbine. The requirement of optimal scheduling of units is not conducive to the safety and economic benefits of the power station