Electric heating comprehensive energy system optimal scheduling method considering refined heat supply network model

Abstract

The invention discloses an electric heating comprehensive energy system optimal scheduling method considering a refined heat supply network model. The method comprises the following steps: constructing a heat supply network hydraulic model considering refined resistance; constructing a thermodynamic model considering the dynamic characteristics of the heat supply network; time sequence load flow calculation of the electric heating comprehensive energy system is carried out; and optimal scheduling of the electric heating comprehensive energy system is carried out. The method can be used for transient analysis of the electric heating comprehensive energy system; the energy interaction process of different energy networks is analyzed, the economical efficiency of system operation scheduling is improved, the operation development of the comprehensive energy system is promoted, the method is suitable for determining the system operation state of the electric heating comprehensive energy system, and analysis means and other work are provided for system scheduling operation and planning construction.

Description

Technical field [0001] The invention belongs to the field of integrated energy system operation optimization, and more specifically, relates to an electric heating integrated energy system optimization dispatch method that takes into account a refined heating network model. Background technique [0002] The integrated energy system refers to the integrated system of production, supply and consumption formed through organic coordination and optimization of energy generation, conversion, storage, and consumption in the process of planning, construction, and operation. Energy is the foundation for human survival and development, and the lifeblood of the national economy. How to reduce environmental pollution in the process of energy consumption while ensuring the sustainable supply of energy for human society is a hot spot of common concern for all countries in the world today. In recent years, the world economic development has increasingly demanded energy, and the consumption of a...

AI Technical Summary

Problems solved by technology

The thermal power demand is not a directly controllable quantity. Taking it as a known quantity for power flow calculation will increase the complexity of heat network power flow calculation, increase the difficulty of power flow solution, and it is difficult to reflect the adjustable quantity of user-side heat exchange equipment in the operation link. difference, which in turn affects the accuracy of heat network scheduling

[0007] At present, there are mainly the following problems in the research on the power flow calculation of the electric heating integrated energy system: first, the dynamic process of the temperature change of the heating network pipeline in the current research mostly adopts a simplified model, and the interaction between the micro-elements in the pipeline is not carefully considered; second, The influence of local resistance on the power flow calculation is not considered in the hydraulic calculation of the heating network, and most studies do not consider the resistance problem in the ring network; thirdly, the user thermal power and return water temperature are often taken as known conditions in the power flow calculation of the heating network , but in practice, the user-side adjustable quantities are water flow and return water temperature, and the load node type needs to be redefined

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