Cleaning cycle evaluation method, device and equipment for condensing lens field of photo-thermal power station

Abstract

The embodiment of the invention discloses a cleaning cycle evaluation method, device and equipment for a condensing mirror field of a photo-thermal power station. The method comprises the following steps: acquiring a first relation change formula between the specular reflectance in a condenser field and a cleaning period, wherein the first relation change formula is determined according to a change relation between weather data of a place where the condenser field is located and the specular reflectance; acquiring a second relation change formula between the specular reflectance and the optical efficiency in the condensing lens field; according to the first relation change formula and the second relation change formula, determining the annual power generation loss amount for cleaning the collecting lens field according to the cleaning period by combining the given target specular reflectance; and obtaining a cleaning period meeting a set constraint condition through an objective function model constructed by the annual power generation loss amount. By means of the method, the target function model is constructed through the annual power generation loss amount, the cleaning period meeting the set constraint condition is obtained, the power station performance can be effectively optimized, and the economic cost is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of solar energy applications, and in particular to a cleaning cycle evaluation method, device and equipment for a concentrator field of a photothermal power station. Background technique [0002] In the field of solar thermal utilization at home and abroad, with the continuous acceleration of the construction of solar thermal power generation units, the research on how to improve the operating economy of the units after they are put into operation and other related performance characteristics is becoming more urgent and important. [0003] Concentrating mirror field is a key component of photothermal energy conversion in photothermal power plants. The mirror surface of the concentrating mirror field is easily affected by factors such as dust, wind and sand, and rain in the environment, which leads to a gradual decrease in the mirror reflectivity of the reflector, thereby affecting th...

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Problems solved by technology

[0003] Concentrating mirror field is a key component of photothermal energy conversion in photothermal power plants. The mirror surface of the concentrating mirror field is easily affected by factors such as dust, wind and sand, and rain in the environment, which leads to a gradual decrease in the mirror reflectivity of the reflector, thereby affecting the energy of the concentrating mirror field. The conversion efficiency will eventually lead to the loss of power generation of the solar thermal power station under the same irradiation conditions, the annual average power generation of the unit will decrease, and the cost per unit of electricity will increase

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