关键词: 抽水蓄能电站, 控制网稳定性分析, 变形误差椭圆法, t 检验法, 综合分析法

Abstract: Because of the special working condition of daily regulating reservoirs of pumped storage power station, the water level has a huge variation range during operation. It is of practical significance to analyze and study the stability of the horizontal control network around reservoir under the condition of huge water level fluctuation. This paper takes the horizontal control network of the upper reservoir of a pumped storage power station as an example, uses the deformation error ellipse method and T-test to determine the stability of points. In view of the disadvantages of inconsistent judging results from two pure mathematical models and the fact that judging process can not consider the actual situation of points, this paper puts forward a comprehensive analysis method. By combining mathematical model with actual situation to determine the stability of points, a more practical conclusion is obtained, which has guiding significance and greater practical application value for similar work.

Key words: pumped storage power station, stability analysis of control network, deformation error ellipse method, T-test, comprehensive analysis method