A Method for Optimizing Operational Efficiency of Units in Small Hydropower Stations

Abstract

The invention provides an operating efficiency optimizing method of a small hydropower station unit. The method comprises the following steps: obtaining the historical operating data of a small hydropower station to create a efficiency feature curve of each small hydropower unit under different working conditions; acquiring the total generating low rate of the hydropower station, the current working water head, the upper limit and lower limit of power output of each unit and other data to create a target function based on the maximum operating efficiency of the small hydropower station; determining limiting conditions; optimizing and solving the target function by the standard particle swarm optimization; counting the optimal generating flow rate of each unit, the maximum power output of the small hydropower station unit and the maximum operating efficiency of the small hydropower station according to the limiting condition. With the adoption of operating efficiency optimizing method of the small hydropower station unit, the generating flow rate of the small hydropower station units can be reasonably distributed, thus the maximum power output of the small hydropower station can be realized, and the utilization rate of the water resource can be raised; in addition, the theoretical direction can be provided for the optimal operating of the existing small hydropower station units.

Description

technical field [0001] The invention relates to a method for optimizing the operating efficiency of a small hydropower station unit, and belongs to the technical field of operation control of the small hydroelectric unit. Background technique [0002] Small hydropower can not only improve the energy structure and increase energy supply, but also protect the ecological environment and reduce greenhouse gas emissions. Vigorously developing small hydropower is in line with the national low-carbon development strategy. However, the output characteristics of small hydropower stations are closely related to the magnitude of the power generation flow, and the fluctuations are relatively large, especially for small run-of-river hydropower stations. The current small hydropower station usually consists of several small-capacity generators, and even the capacity of each generator is not exactly the same, and its operating efficiency changes with the output of the generators. When the...

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Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the operating mode of existing small hydropower units, and propose a method for optimizing the operating efficiency of small hydropower units. When the total power generation flow of a small hydropower station is constant, the method realizes small hydropower by rationally allocating the power generation flow among units. The unit operates at optimum efficiency

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