Electric heating comprehensive energy system double-layer planning method

Abstract

The invention discloses an electric heating comprehensive energy system double-layer planning method, and belongs to the technical field of clean heating and refrigeration, energy system capacity planning and operation scheduling. Based on the operation principle of each unit contained in the electric heating comprehensive energy system, a double-layer planning model of a capacity planning and operation scheduling strategy is established by taking the minimum new construction cost of the cold and heat double-storage type heat pump and the minimum operation cost of the electric heating comprehensive energy system as upper-layer targets and taking the minimum electricity consumption cost as a lower-layer target according to an electric heating and cooling load supply and demand relationship.And the double-layer planning model is solved through an intelligent algorithm, thus planning the capacities of the thermal power generating unit, the combined cooling heating and power generation unit, the heat pump unit and the cooling and heating double-storage device and the installation place of the cooling and heating double-storage type heat pump; lower-layer operation scheduling is performed with the lowest power consumption cost based on the capacity planning and unit operation constraints obtained by the upper layer. The investment cost and the operation cost of the system can be reduced, the wind curtailment electric quantity of the system is reduced, and the electricity cost of users is reduced.

Description

technical field [0001] The invention relates to a double-layer planning method for an electric-thermal comprehensive energy system, which is suitable for the electric-thermal comprehensive energy system and belongs to the technical fields of clean heating and cooling, energy system capacity planning, and operation scheduling. Background technique [0002] In order to gradually solve the problem of winter smog in northern my country, central heating of combined heat and power units is currently a relatively clean and efficient main heating means, but limited by urban planning and construction, investment and renovation costs and other factors, some areas (such as towns, etc.) are not suitable for this traditional heating method, resulting in the centralized heating of combined heat and power units not being able to cover all areas. [0003] In order to achieve full coverage of clean heating, clean electric heating can be used as the main means of clean heating in the future. ...

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Problems solved by technology

[0005] Aiming at the problem of wind power curtailment caused by the large-scale use of wind power after the heat pump is connected to the grid in the prior art, the technical problem to be solved by a two-layer planning method for an electric-thermal integrated energy system disclosed by the present invention is: Based on the operating principle of each unit included in the electrothermal integrated energy system, a two-tier programming model for capacity planning and operation strategy of each unit is established, and the results obtained by solving the two-tier programming model are used to dispatch the electrothermal and cooling loads of the electrothermal integrated energy system to reduce the electrothermal integrated energy. New construction and operating costs of the system, reducing the system's abandoned wind power, and reducing user electricity costs

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