A method and system for measuring and calculating the water energy utilization improvement rate of cascade hydropower station groups

Abstract

The invention discloses a method and a system for measuring and calculating hydroenergy utilization improvement rate of cascaded hydropower stations. The method comprises the following steps that: 1) a data acquisition device acquires actual operating data of the hydropower stations; 2) the data acquisition device transmits the acquired data to a measuring and calculating server; and 3) the measuring and calculating server processes the acquired data, calculates actual generated power and assessed power aiming at the hydropower stations in different adjusting types, and obtains the hydroenergy utilization improvement rate. Due to the method and the system for measuring and calculating the hydroenergy utilization improvement rate of the cascaded hydropower stations, the accuracy of the calculation result of the hydroenergy utilization improvement rate can be improved and a good guiding effect is taken for the scheduling optimization of the hydropower stations.

Description

technical field [0001] The invention relates to a method and system for measuring and calculating the improvement rate of water energy utilization of cascade hydropower station groups, and belongs to the technical field of optimal dispatching of cascade hydropower station groups. Background technique [0002] The improvement rate of hydropower utilization is an important kinetic energy index of hydropower stations, which has an important impact on the optimal dispatch of hydropower stations. The improvement rate of water energy utilization is based on the predicted electricity volume of the incoming water in the current year according to the dispatch chart, and the ratio of the difference between the actual electricity volume and the assessed electricity volume during the statistical period and the assessed electricity volume, that is, the water energy utilization improvement rate = (annual actual power generation - annual assessment power generation amount) / annual assessmen...

AI Technical Summary

Problems solved by technology

Although this kind of conventional scheduling diagram is simple and intuitive, it can use the experience of scheduling and decision-making personnel to play a certain guiding role in the operation and scheduling of reservoirs. However, the information it uses is limited and the theory is not rigorous enough. The determined operation scheduling strategy and The corresponding decision-making can only be relatively reasonable, it is difficult to achieve the global optimum, and it is even more difficult to deal with complex problems such as multi-objective and multi-dimensional variables;

[0005] (2) This method does not consider fundamental changes in incoming water and operating conditions, and excludes runoff status and power system factors;

[0006] (3) In the calculation of the assessment electric quantity, the selection of the parameters of the formula is quite arbitrary, and different parameters will lead to different calculation results, which will inevitably enlarge or narrow the assessment gap

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