Calculation method of energy index for multi-cavity and multi-machine hydropower and water conservancy projects

Abstract

The invention relates to energy index calculation technology. The present invention aims to solve the problem that the current processing method using fixed output coefficients cannot truly reflect the impact of the difference in energy conversion efficiency of water turbines at different times on the output and power generation of the power station, the accuracy of energy indicators is lacking, and the energy indicators of current multi-hole multi-machine power stations In the calculation method, manual experience is generally used to allocate power generation reference flow between tunnels and machines. Because of the unclear calculation goals and principles and relatively subjective factors, it is difficult to ensure that the energy indicators between the schemes are consistent when designing the tunnel machine scheme. Based on the comparison basis, the reliability of the scheme is lacking. A calculation method for the energy index of multi-cavity and multi-machine hydraulic engineering is proposed. For other energy indicators, when the power generation flow of multi-hole and multi-machine hydropower projects is optimally allocated, the annual power generation of hydropower stations is the largest, which is suitable for multi-hole and multi-machine hydropower and water conservancy projects.

Description

technical field [0001] The invention relates to the technology of multi-cavity and multi-machine hydropower and water conservancy projects, in particular to the technology of the energy index calculation method of multi-hole and multi-machine hydropower and water conservancy projects. Background technique [0002] A multi-hole multi-machine hydropower project refers to a hydropower and water conservancy project with multiple water diversion tunnels, each of which corresponds to multiple water turbines. Energy index calculation refers to the process of inflow runoff, reservoir conditions, reservoir power station operation mode, water diversion power generation conditions etc. are known, calculate the power generation output process, power generation head process, power generation and other indicators of the power station. [0003] Calculation of energy index is a very important and basic work in the investigation, design and operation management of hydropower and water conser...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for calculating the energy index of multi-cavity and multi-machine water conservancy projects, which solves the problem that the current processing method using fixed output coefficients cannot truly reflect the impact of differences in the energy conversion efficiency of hydraulic turbines at different times on the output and power generation of power stations. The accuracy of the index is lacking, and in the current energy index calculation method of multi-cavity multi-machine power station, the power generation reference flow distribution between the tunnel and the machine is generally based on manual experience. Because of the unclear calculation objectives and principles and relatively subjective factors, in the When designing tunnel drilling schemes, it is difficult to ensure that the energy indicators between the schemes have a consistent basis for comparison, resulting in a problem of lack of reliability of the schemes

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