Heat-storage heat-power co-generation unit and electric boiler based wind curtailment absorption coordinated dispatching model

Abstract

The invention relates to a heat-storage heat-power co-generation unit and electric boiler based wind curtailment absorption coordinated dispatching model. The model is characterized in that on the basis of analyzing a working principle of a heat-storage heat-power co-generation unit, it is proposed to calculate a heat supply amount of an electric boiler maximally absorbing wind curtailment electric energy, and different working modes of a heat storage apparatus and the economy of heat-storage heat-power co-generation and electric boiler coordinated heat supply are compared. A calculation result shows that the heat supply of the electric boiler has optimal economy during maximal wind curtailment absorption. According to the model, the wind curtailment absorption space of a power grid can be further expanded, the dispatching cost can be reduced, and a scientific basis can be provided for a power grid dispatching department to make a day-ahead dispatching plan.

Description

technical field [0001] The invention relates to the field of coordinated control of wind power networking, and is a coordinated scheduling model for abandoned wind consumption based on heat storage cogeneration units and electric boilers. Background technique [0002] At present, the main contradiction facing the development of wind power in my country is still the problem of wind curtailment and power rationing. Among them, the Northeast, North China, and Northwest regions, referred to as the "Three North Regions", have a particularly prominent problem of the huge amount of abandoned air during the winter heating period, which has become the focus of attention of the whole society. On the one hand, the "Three North Regions" have abundant wind energy resources, but insufficient energy consumption. At the same time, due to the limitation of power grid transmission channels, it is often very difficult to send wind power abroad. On the other hand, in order to meet the needs of...

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Problems solved by technology

On the one hand, wind energy resources in the "Three North Regions" are abundant, but energy consumption is insufficient. At the same time, due to the limitation of power grid transmission channels, it is often very difficult to send wind power abroad.

On the other hand, in order to meet the needs of heat load in winter, the production method of cogeneration units "fixing power by heat" further compresses the space for wind power to be connected to the grid, which is another main reason for wind curtailment

[0003] my country's wind power is mostly large-scale centralized units, usually far away from the load center, and the wind curtailment phenomenon is very serious. The use of heat storage devices or electric boilers alone has limited effect on improving the system's ability to absorb and curtail wind

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