Distributed hot pump group control-based contact line power layered synergic stabilization strategy of electric heating microgrid

Abstract

The invention relates to a distributed hot pump group control-based contact line power layered synergic stabilization strategy of an electric heating microgrid. A distributed heat storage water tank group matched with a distributed hot pump group in the electric heating microgrid is classified to management of the electric heating microgrid, a contact line original power PTL0 is obtained by measuring regenerative energy and load power in the microgrid, a power control target PTar is analyzed, the contribution of a storage battery and the hot pump group is adjusted according to the contributionof the regenerative energy and real time information of a user load and by combining energy storage state information of the storage battery and the heat storage water tank with regard to the acquired fluctuation power Pflu, so that the contact line fluctuation power stabilization of the electric heating microgrid is achieved. By taking synergic control of the storage battery and the hot pump group as a core, the matched heat storage resource of an air source hot pump is fully utilized, the heat supply requirement of each hot pump on a user is ensured as well as the power smoothness of the contact line is completed, the medium-frequency fluctuation stabilization is effectively participated by power adjustment of the hot pump, and the implementation cost of an optimization scheme is reduced.

Description

technical field [0001] The invention belongs to the field of electric power technology, relates to a microgrid combined with electric heating, and is a power stratified cooperative stabilization strategy for electric heating microgrid tie lines based on distributed heat pump group control. Background technique [0002] Combined heat and power micro grid is a terminal integrated energy supply facility composed of distributed energy resources, energy storage equipment, electric heating equipment, and control units based on the electricity and heat needs of end users. As a typical application of comprehensive energy, the electric heating microgrid is based on the microgrid, through flexible control of distributed heating equipment, coordinated with electrical equipment, to realize the comprehensive utilization of two forms of energy, electricity and heat. The electric heating micro-grid can use two different energy forms of electricity and heat in cascades to improve the reliab...

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Problems solved by technology

Due to the single control method of the heat pump, the electrothermal coupling and conversion potential of the heat pump components cannot be fully utilized

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