Wind power output scheduling system and method realized by combined control of heat and power cogeneration and refrigeration load

Abstract

The invention provides a wind power output scheduling system and method realized by combined control of heat and power cogeneration and a refrigeration load. According to the combined control of a fire coal steam-pumping and steam-condensing type heat and power cogeneration unit and the refrigeration load, the equivalent power generation of the wind power is adjusted to tend to be the same as actual requirements of the system and the pressure of synchronization is reduced; a user adopts two ways of utilizing a fan coil to consume cold water and utilizing an air conditioner to refrigerate by consuming the electric power, wherein the cold water is from the heat and power cogeneration unit and the electric power is supplied by the heat and power cogeneration unit and a wind generating set; under the condition of satisfying the electric power supply and the cold water supply, a flow rate of the cold water for refrigeration is reduced and is compensated by consuming the electric power to refrigerate; the process of consuming the electric power to refrigerate not only can be used for compensating the disadvantages of the cold water refrigeration, but also can be used for increasing the load at a low ebb time interval of the electric power; and by using the matching of the change of a power load and the wind power generation to adjust, the difference between the adjusted wind power equivalent electric power and the actually-required wind power treatment is the smallest.

Description

technical field [0001] The invention relates to an urban comprehensive energy supply system, in particular to a method for realizing optimal control of a power system by dispatching refrigeration loads. Background technique [0002] Renewable energy has the characteristics of green and clean, and has developed rapidly in recent years. But taking wind power as an example, while wind power provides clean and low-carbon energy, the large-scale grid connection of wind farms has also brought adverse effects on the safe and economic operation of the grid. Traditional scheduling problems are based on accurate load forecasting. However, wind energy is affected by various natural factors such as climate, altitude, terrain, and temperature, and has intermittent and random fluctuations. The difficulty of wind speed and wind power forecasting is much greater than that of load forecasting. Although scholars at home and abroad have done a lot of related research work on wind energy fore...

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Problems solved by technology

Although scholars at home and abroad have done a lot of related research work on wind energy prediction, the prediction level of wind farm output still cannot meet the actual requirements of the project to a large extent, which has brought considerable problems to the dispatching work of the power system. big difficulty

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