Combined heat and power scheduling method for absorbing wind power by adopting multi-energy storage modes

Abstract

The invention provides a combined heat and power scheduling method for absorbing wind power by adopting the multi-energy storage modes. The combined heat and power dispatching method comprises the following steps: determining the composition of an electric heating comprehensive energy system; determining start-stop control strategies of a heat accumulating type electric boiler and a battery energy storage device; establishing energy consumption constraint models of a thermal power generating unit in different peak regulation stages; obtaining a combined heat and power scheduling model; improving a particle swarm algorithm; acquiring related parameters; when the wind power prediction power is larger than or equal to the wind power pre-scheduling output, starting the heat accumulating type electric boiler, and if wind curtailment exists, charging the battery energy storage device; enabling the output of the thermoelectric unit and the output of the heat accumulating type electric boiler to meet the thermal load balance requirement; after the output of the thermoelectric unit, the thermal power unit, the wind turbine generator and the battery energy storage device meets the electric balance requirement, solving the combined heat and power scheduling model by using an improved particle swarm algorithm; and outputting an optimized operation result of the combined heat and power scheduling model. According to the method, the wind curtailment rate is reduced, and the overall comprehensive target participating in scheduling is maximized.

Description

technical field [0001] The invention relates to an electric-thermal integrated energy system, in particular to a heat-electricity combined dispatching method that adopts multiple energy storage modes to accommodate wind power. Background technique [0002] my country is rich in wind power resources, and wind power has become the fastest growing and most widely used new energy. However, the reverse distribution of new energy and load, and the asymmetry of electric energy production and consumption have seriously affected the consumption of new energy and system stability. To solve this problem, the current UHV long-distance DC transmission technology has been vigorously developed, but its construction speed Slow, the problem of new energy consumption cannot be solved for the time being, and the local consumption scheme is still important. Thermal power units account for a high proportion of my country's power supply structure. During the winter heating period, its "heat-base...

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Problems solved by technology

[0003]Aiming at the above technical problems, the purpose of this invention is to provide a combined heat and power scheduling method that can improve the overall system target and reduce the abandoned wind rate, aiming to solve the problem of "heat and power units" The peak-shaving capacity of the system is insufficient under the operation mode of "heat-fixed power", thus reducing the space for wind power to be connected to the grid

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