Construction method of comprehensive minimum optimization model for power-gas-heat interconnection system

Abstract

The invention discloses a method for constructing a comprehensive minimum optimization model of electricity-gas-heat interconnection system for abandoning wind and light and reducing electric heat load. Aiming at the deficiencies of the existing technology, the objective function of the optimization model adds variables such as heat load reduction, air curtailment, and light curtailment. The objective function of the model; the consumption airflow, heating power and active output variables in the STCHP model are added to the equation constraints of the optimization model, and the consumption electric power and heating power variables of the EB device are added to the equation constraints of the optimization model; In the inequality constraints of the optimization model, the upper and lower limit constraints of electricity / gas / heat load reduction, abandoned air volume, and light abandoned amount, as well as the capacity constraints of STCHP and EB devices, etc. are considered.

Description

technical field [0001] The invention belongs to the field of comprehensive energy systems, and aims to realize the calculation of the comprehensive load reduction of the electricity-gas-heat interconnection system and the system's curtailment of wind and light, and specifically relates to the comprehensive minimum optimization of wind curtailment and electricity / gas / heat load reduction Model. Background technique [0002] In recent years, with the continuous expansion of the scale of traditional coupling components such as combined heat and power (CHP), gas generators (GFG), gas boilers (GB), electric boilers (EB) of various fuel types, electricity, natural gas, thermal systems The coupling relationship between them is getting deeper and deeper. Coupling element solar thermal heat and power (STCHP) utilizes clean energy solar heat and is equipped with heat storage at the same time, which breaks the traditional operation mode of "heat determines electricity" in combined heat...

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Problems solved by technology

In the existing research, the optimization goal is to minimize the operating cost of the electric-gas interconnection system, and the calculation of the reduction of the system's electric load and gas load is realized. However, in the related research on the optimization model of the electric-gas-heat interconnection system, the goal is to minimize the energy cost. The function does not consider the phenomenon of abandoned wind and light in the actual system, nor does it take into account the coupling conversion characteristics of the coupling elements STCHP and EB, so it is impossible to realize the comprehensive load reduction and Effective and accurate calculation of wind and light abandonment

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