Coordination control method for off-grid phosgene combined heat and power generation integrated energy system

Abstract

The invention relates to a coordination control method for an off-grid phosgene combined heat and power generation integrated energy system. An integrated energy system model with subsystems representing overall dynamic characteristics of the system is constructed through overall analysis of the system and serves a distributed model prediction control algorithm. A single-layer control structure based on direct energy balance is provided according to a user energy demand analysis system control target, and thermoelectric energy supply and demand real-time balance can be achieved without an upper layer optimization scheduling instruction. Furthermore, according to the characteristics of a coordination control object, cooperative distributed model predictive control is adopted to achieved thermoelectric coordination control. Through simulation verification, the control strategy provided by the invention can realize real-time balance of thermoelectric energy supply and demand under various disturbances, and the calculation burden is significantly reduced compared with a centralized model prediction control algorithm.

Description

technical field [0001] The invention relates to the technical field of thermoelectric coordinated control of cogeneration systems, in particular to an off-grid phosgene cogeneration integrated energy system coordinated control method. Background technique [0002] In recent years, multi-energy coordinated integrated energy systems have become the focus of research for their potential to accommodate renewable energy. With my country's goal of "carbon peaking and carbon neutrality" proposed, an integrated energy system driven by a high proportion of renewable energy has become the best choice for a low-carbon energy supply model. However, due to the high integration and complexity of the integrated energy system, its operation control is extremely challenging. [0003] At present, the research on the operation optimization of combined heat and power integrated energy systems mostly adopts the method of hierarchical optimization scheduling, which usually has a two-layer struct...

AI Technical Summary

Problems solved by technology

In order to meet the rapid balance of power supply and demand under various disturbances, a large reliable energy storage capacity is bound to be required, which increases the investment cost; secondly, most studies on combined heat and power integrated energy systems combine the heating or cooling process with the power supply process. Equivalence, without considering the mismatch between thermal power scheduling and real-time control layer caused by the inertia and closed-loop characteristics of the thermal process, such as the upper layer scheduling instructions and the lower layer being unreachable, etc.

In addition, the current operation control methods of combined heat and power integrated energy systems based on optimal scheduling usually adopt the method of "determining electricity by heat" or "determining heat by electricity", or use energy storage and thermal inertia to relax the heat supply and demand balance, and It does not require simultaneous supply and demand of heat and electricity, which will reduce the comfort of heat users and fail to fully meet the needs of users for diversified energy use

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