Thermoelectric hydrogen multi-energy-flow comprehensive energy system and optimal scheduling method thereof

Abstract

The invention discloses a heat-electricity-hydrogen multi-energy-flow comprehensive energy system and an optimal scheduling method thereof, the multi-energy-flow comprehensive energy system adopts a heat-electricity-hydrogen multi-energy-flow comprehensive energy system, and the optimal scheduling method comprises the following steps: initializing the system; performing time sequence prediction based on deep learning to obtain intra-day wind-solar power generation and electric heating load power; in the first-stage scheduling, an objective function and a constraint condition are set based on economy, a scheduling step length is set, day-ahead scheduling is carried out on the multi-energy-flow integrated energy system, and an optimal solution is obtained; performing ultra-short-term prediction on the wind-light and electric heating load by establishing a multivariate time sequence differential equation model; in the second-stage scheduling, the optimal solution of the day-ahead scheduling is used as a reference value, the output of each micro source in the day is corrected with the minimum error as a target based on a rolling scheduling period, the precision of optimization control is improved, the influence of the error on the operation cost is reduced, and the reliability of a comprehensive energy system and the stability of an energy storage system are enhanced.

Description

technical field [0001] The invention belongs to the technical field of integrated energy systems, and in particular relates to a thermoelectric hydrogen multi-energy flow integrated energy system and an optimal scheduling method thereof. Background technique [0002] Energy is one of the important sources of modern social and economic needs. With the continuous improvement of my country's energy consumption level, the rate of energy cleanliness and terminal electrification rate are gradually increasing, the use of energy and power generation are growing rapidly, and the scale of sustainable clean energy power generation has been continuously increasing. expanding. Due to its clean and efficient form of power generation, distributed renewable energy plays an important role in energy supply and is an effective way to solve energy shortages. With the development and utilization of renewable energy, distributed power generation has become an important way to connect renewable en...

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Problems solved by technology

[0003] At present, there are certain studies on the modeling, planning and optimal scheduling of integrated energy systems at home and abroad. The complexity of optimal scheduling is mainly reflected in the fact that single-objective optimization based on economics is difficult to meet market demand, and the composition of objective functions tends to be diverse. (economy, energy saving, environmental protection, peak shaving and valley filling indicators, etc.); the coupling of multi-energy systems is increasingly strengthened, and higher requirements are put forward for the optimal dispatch and coordinated operation of integrated energy systems, which need further research; existing research Many studies have been carried out on gas turbines, electric boilers and other equipment in the traditional way of combined heat and power and their optimal management. A large number of studies have not considered the thermoelectric hydrogen coupling characteristics of fuel cells and electrolyzers, and have not conducted a comprehensive hydrogen energy system. Refined modeling; prediction errors have a certain impact on the operation of the integrated energy system, etc.

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