SOLAR TRACKING METHOD AND SYSTEM FOR USE IN DISH-TYPE SOLAR THERMAL ELECTRICITY GENERATION SYSTEM

摘要

A solar tracking method for use in a dish-type solar thermal electricity generation system. The solar thermal electricity generation system is provided with a light-concentrating dish (20) and a heat collector (10). The solar tracking method comprises the following steps: 1) acquiring temperature distribution information of the heat collector (10); 2) determining, on the basis of the temperature distribution information, whether or not solar incident light rays are completely focused after being concentrated via the light-concentrating dish (20), if yes, executing step 10), if not, executing step 3); 3) acquiring the current angle of the light-concentrating dish (20), and a target angle of the light-concentrating dish (20) required for complete focus, and adjusting the current angle of the light-concentrating dish (20) to the target angle; and, 10) keeping the current angle of the light-concentrating dish unchanged. This method implements precision tracking of the sun, and increases the degree of precision in focusing the solar incident light rays. A solar tracking system for use in the dish-type solar thermal electricity generation system and corresponding to the solar tracking method and provided with same effects.