Small distributed pumped storage system for teaching and scientific research

Abstract

The small distributed pumped storage system for teaching and scientific research comprises a lower water tank, the left side of the lower water tank communicates with a water pumping pump, the left side of the water pumping pump is fixedly connected with a coupler, the left side of the coupler is fixedly connected with a motor, and the top of the water pumping pump communicates with an outlet adjusting valve; the top of the outlet adjusting valve is communicated with a water feeding main pipeline, and the top of the water feeding main pipeline is communicated with an outlet valve. The outlet regulating valve is in a full-open state, the valve is in a closed state, the outlet valve is in a full-open state, the inlet regulating valve is in a closed state, the lower water and upper water main regulating valve is in a closed state, and the lower water and upper water main regulating valve is in a full-open state. The motor is driven by the first frequency converter through the water pumping cable to enter a working state, and water in the lower water tank is lifted into the upper water tank to be stored.

Description

technical field [0001] The invention relates to the technical field of electric power system automatic control, in particular to a small distributed pumped storage system for teaching and scientific research. Background technique [0002] It is necessary to build a clean, low-carbon, safe and efficient energy system, control the total amount of fossil energy, focus on improving utilization efficiency, implement renewable energy substitution actions, deepen the reform of the power system, and build a new power system with new energy as the main body. It is generally believed that sufficient energy storage capacity needs to be configured to solve the challenges brought by the intermittent, unstable and uncontrollable characteristics of new energy represented by wind power and photovoltaic power generation to the power system. [0003] The core feature of the new power system is that new energy occupies a dominant position and becomes the main form of energy. With the introduc...

AI Technical Summary

Problems solved by technology

In order to study and demonstrate the interaction process between distributed pumping storage and power systems of different strengths (including power generation and power grid), there are problems in the influence of pumped storage units changing their output in strong systems and weak systems on the stability of the entire system. There are also difficulties in the training and science popularization of pumped storage personnel

The main performance is that the common industrial-grade pumped storage power station has a limited range of water head variation or high adjustment costs, resulting in a small range of adjustable output, requiring a large footprint and a large height drop (generally in the range of 20-200 meters)

[0009] Therefore, there is an urgent need to provide a distributed pumped storage system for teaching and scientific research that interacts with the power system, so as to solve the problem of intuitionistic and realistic reflection of the interaction process between the pumped storage power station and the power grid, power system, and new energy in the process of research, training, and display. The output adjustable range of the medium unit is small, which leads to the in-depth research on it and the unsatisfactory teaching effect. It also solves the problem that the pumped-storage power station occupies a large area and is difficult to build in teaching and scientific research sites. Of course, it can also solve the real problem. Problems affecting teaching and research brought about by the high cost of large-scale distributed pumped storage power plants

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