Comprehensive energy system two-stage scheduling method and system considering demand response

Abstract

The invention relates to a comprehensive energy system two-stage scheduling method and system considering demand response, and relates to the field of cogeneration economic scheduling. The method comprises the steps: building a heat supply mathematic model of a heat supply network interconnection system, establishing a segmented electricity price demand response cost model and a wind change guidance electricity price demand response cost model by taking the segmented electricity price and the wind change guidance electricity price as constraint conditions and adopting a day-ahead intra-day two-stage scheduling mode, according to the model, establishing an optimization model considering demand response and heat supply network interconnection, by adopting a dynamic inertia weight improved particle swarm algorithm, solving the optimization model considering demand response and heat supply network interconnection, and determining an optimization operation result. By adopting the method, the economical efficiency and the wind energy absorption level of the multi-region thermoelectric comprehensive energy system can be improved.

Description

technical field [0001] The invention relates to the field of economic scheduling of cogeneration of heat and power, in particular to a two-stage scheduling method and system for an integrated energy system considering demand response. Background technique [0002] The rapid development of human civilization in the 20th century was largely dominated by oil, coal and natural gas, and fossil energy played a vital role in the development of human beings. But in recent years, the fossil energy that supports the rapid development of human civilization has experienced an unprecedented crisis. In addition to the continuous decline in its reserves, what is more serious is that the pollutants produced after its use have seriously damaged the earth's ecological environment. To achieve sustainable development, To solve the problems of sustainable energy supply and environment, it is necessary to vigorously develop clean energy. Therefore, renewable energy sources such as wind energy an...

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Problems solved by technology

However, the areas with large installed capacity of wind power are also the "Three North" areas with a relatively high proportion of thermal power units. Since most of the cogeneration units work in the "heat-based power" mode of operation, the units have thermoelectric coupling. problem, and traditional combined heat and power systems mostly adopt the heating principle of single area and individual processing, which greatly reduces the flexibility of the output of the source-side unit itself. The period when the output of CHP unit) is high is the period of excess wind power, the space for wind power grid connection is very low, the utilization rate of wind power is not high, the phenomenon of wind curtailment is serious, and the penalty cost is high

To sum up the above aspects, the economy of power generation of the traditional combined heat and power system including wind power (economy refers to the cost and consumption of the project from planning, survey, design, construction to the entire product life cycle) is not good.

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