Comprehensive energy system based on wind-light-electricity energy and regulation and control method

Abstract

The comprehensive energy system comprises a wind-light-electricity energy subsystem and a fuel gas energy subsystem, and the wind-light-electricity energy subsystem comprises a wind-light-electricity energy conversion device, a fuel cell device, an electricity storage device, an electric hydrogen production device, a heat storage device and a thermochemical energy storage device. The gas energy subsystem comprises a gas power generation device and a high-temperature waste heat device, the wind-light-electricity energy conversion device comprises a heat energy conversion module and an electric energy conversion module, a stable power supply and an unstable power supply are complemented, stable and safe consumption of renewable energy sources can be achieved, and the problems of fluctuation and response are solved from the source side; the adjustment of the system is more flexible, the priorities of the wind-light-electricity energy conversion device, the electricity storage device, the heat storage device, the gas power generation device and the fuel cell device are set in sequence, and the devices are started step by step when the energy supply amount is insufficient, so that the orderly adjustment of the whole system on intraday operation and cross-seasonal movement is realized.

Description

technical field [0001] The invention relates to the technical field of energy, in particular to a comprehensive energy system and a control method based on wind and photovoltaic energy. Background technique [0002] With the country's energy transformation and structural adjustment, a large number of wind and photovoltaic investments have been made, and the main power supply has been transformed from the traditional coal-fired power dominant to wind and photovoltaic as the main supply. In this process, the random fluctuation characteristics of wind and photovoltaics have become a difficult point in the transformation. At present, the power grid company has clearly proposed to build a new power system with new energy as the main body. In order to promote the power consumption of new energy units, the on-grid power of thermal power units must be limited. However, some domestic power systems also shoulder the heating function, which can Flexibility to regulate power supply is ...

AI Technical Summary

Problems solved by technology

At present, the power grid company has clearly proposed to build a new power system with new energy as the main body. In order to promote the power consumption of new energy units, it is necessary to limit the on-grid power of thermal power units. However, some domestic power systems are also responsible for heating. The flexibility to adjust the power supply is seriously insufficient, and with the large-scale development of renewable energy, intermittent and unstable energy sources such as wind and solar power will be installed on a large scale at the power generation end and the user end. In this scenario, the electric cooling and heating of the entire power system Load balancing will be difficult to achieve

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