Mixed wind-light compensation water pumping and energy storing system and control method thereof

Abstract

The utility model provides a mixed wind-light compensation water pumping and energy storing system comprising a wind-light compensation unit, a controller, a direct current load, an alternating current load, an inverter and a water pumping and energy storing unit. The wind-light compensation unit comprises a wind generating set and a photovoltaic array; the water pumping and energy storing unit comprises reversible water pump-water wheel unit, an upper water pond and a lower water pond; and the controller comprises a wind-light compensation controller, a digital signal processor chip, a voltage / current sampling circuit, a voltage / current transformer set, a breaker driving circuit and three breakers. In the invention, a traditional wind-light compensation system, namely an energy storing device-storage battery set, is replaced by a pumped storage and power generation system, on the water pumping and energy storing unit, the reversible water pump-water wheel unit is used for pumping water or generating electricity, and by applying a segmented integration method, the energy of the upper water pond of the water pumping and energy storing unit is monitored and controlled. With the mixed wind-light compensation water pumping and energy storing system, the defects of expensiveness, short service life, environmental pollution and the like of a storage battery set can be solved, the system stability and power supply reliability can be improved, and the system building and running cost can be lowered.

Description

technical field [0001] The invention belongs to the technical field of new energy applications, and in particular relates to a hybrid wind-solar complementary pumped storage system and a control method thereof. Background technique [0002] At present, energy conservation, emission reduction, green energy, and sustainable development have become the focus of attention of all countries. The ever-increasing price of fossil fuels, the increasingly prominent issue of the greenhouse effect, and the increasing demand for energy have made people's enthusiasm for research on new energy applications unprecedentedly high. Wind energy and solar energy resources have been favored by many researchers as a clean and efficient renewable energy. However, wind energy and solar energy resources also have the characteristics of instability and discontinuity. The emergence of wind and solar hybrid systems has solved this shortcoming of wind and solar resources to a certain extent. At the same ...

AI Technical Summary

Problems solved by technology

In the wind-solar hybrid system, the traditional electric energy storage and transposition mostly use battery packs, but the battery packs have the characteristics of high cost, short life, difficult maintenance, and possible acid leakage of the battery, which may cause environmental pollution, which increases the operating cost of the system and affects system reliability

[0003] At present, the research on battery-related technologies is in full swing. The battery manufacturing process, materials, battery charge and discharge management control and other technologies are changing with each passing day. However, it still cannot fundamentally solve the problem of large-capacity economical and effective storage of electric energy, which seriously restricts the wind-solar hybrid System development and application

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