Novel rural power distribution network based on wind-solar-storage integration

Abstract

The invention discloses a novel rural power distribution network based on wind-solar-storage integration. A photovoltaic power generation system and a wind power generation system are connected to a direct current bus at the same time, an energy storage system is connected to a direct current bus through a bidirectional DC / DC circuit, and the direct current bus and an alternating current bus are connected through a grid-connected inverter; the energy management system adopts a coordination control mode, a control system firstly predicts power and load demands of photovoltaic and wind power generation, then formulates a corresponding operation plan, automatically adjusts the operation plan in real time according to the collected voltage, current and power state information, and controls start and stop of a photovoltaic wind power supply, a load and an energy storage device. The method is used for stabilizing voltage and frequency of the novel rural power distribution network and providing related protection functions for the novel rural power distribution network. According to the method, full development and utilization of wind energy and light energy are realized, the energy utilization rate is improved, dependence of a rural power distribution network on a large power grid is reduced, the impact of new energy power generation on the large power grid is reduced, the pressure of operation and maintenance is reduced, and safe, reliable and efficient power utilization is realized.

Description

technical field [0001] The invention relates to a new type of rural power distribution network based on the integration of wind, wind and storage, and belongs to the field of electric power technology. Background technique [0002] my country's energy transformation and development and the development of the production, supply, storage and marketing system are further advanced, rural revitalization, electric power first, the majority of villages have relatively small power loads, long-distance transmission line losses are large, rural distribution network operation and maintenance are difficult, and maintenance is inconvenient, etc. It is also becoming more and more obvious; at the same time, the utilization rate of wind energy and solar energy in the vast rural areas is generally not high, and the phenomenon of abandoning light and wind is common. [0003] Wind energy and solar energy power generation are intermittent and random, and it is difficult for wind and solar indepe...

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Problems solved by technology

[0002] my country's energy transformation and development and the development of the production, supply, storage and marketing system are further advanced, rural revitalization, electric power first, the majority of villages have relatively small power loads, long-distance transmission line losses are large, rural distribution network operation and maintenance are difficult, and maintenance is inconvenient, etc. It is also becoming more and more obvious; at the same time, the utilization rate of wind energy and solar energy in the vast rural areas is generally not high, and the phenomenon of abandoning light and wind is common.

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