A day-ahead steady-state optimization analysis method for integrated energy systems with the participation of energy storage

Abstract

The invention discloses a method for analyzing the steady-state optimization of a comprehensive energy system with the participation of energy storage. The method designs an energy hub and an energy coupling mode based on multi-type load requirements, and proposes coupling electricity-heat-air-cooling on the basis of the energy hub ‑The energy station model structure of the vapor sub-system; then establish the steady-state mathematical model of the electric-heat-gas-cold-vapor sub-system in the integrated energy system; The impact of the day-ahead steady-state optimization; secondly, a day-ahead steady-state nonlinear optimization model of the electric-heat-gas-cooling-vapor system is established under different load structures; finally, an example analysis verifies the steady-state optimization calculation and steady-state optimization of the integrated energy system. Validity of the run analysis. The invention mainly solves the insufficient problem of coordinated operation of various subsystems in the current integrated energy system, and the method can reasonably reflect the operating characteristics of the integrated energy system.

Description

technical field [0001] The invention belongs to the optimization, scheduling, and steady-state calculation and analysis of an integrated energy system, and specifically relates to a method for analyzing a day-ahead steady-state optimization of an integrated energy system with the participation of energy storage. Background technique [0002] Relying on the continuous innovation of energy transmission technology, energy conversion equipment and renewable energy and other related technologies, the integrated energy system is conducive to the realization of multi-energy coordinated supply and comprehensive energy cascade utilization. It has become one of the important development trends in the energy field. The mutual coupling of multiple energy sources is one of the important signs that distinguish the integrated energy system from the traditional energy system. The differences in the characteristics of various energy sources pose new challenges to the planning and operation o...

AI Technical Summary

Problems solved by technology

[0005] At present, there are few literatures that consider the key characteristic variables of various energy subsystems, and study the steady-state optimization of integrated energy systems involving electricity-heat-gas-cooling-steam subsystems and heat storage, cold storage, and power storage. , the existing research mainly focuses on the optimization analysis of electricity-thermal coupling system, electricity-gas coupling system, electricity-heat-gas coupling system and combined cooling, heating and power system based on energy flow, without fully considering the participation of photovoltaic and wind power. Next, considering the key characteristic variables of the current steady-state optimization operation mode of the comprehensive energy system including energy storage, electricity-heat-gas-cooling-steam sub-system, the steady-state optimization model established to optimize the comprehensive energy system is not discussed Validity and Applicability of Calculations and Steady-State Operational Analysis

Images