Electric heating microgrid source-load-storage collaborative smooth tie line power method and system

Abstract

The invention discloses an electric heating microgrid source-load-storage collaborative smooth tie line power method and system. A controllable equipment state parameter set in an electric heating microgrid of a centralized energy supply structure is used as a reference standard for adjusting the operation state of each piece of equipment during power fluctuation stabilization; and then a tie linepower smoothing target is dynamically determined through fuzzy control, power fluctuation stabilizing tasks borne by a gas turbine and a heat pump group are reasonably distributed based on an electric heating microgrid power smoothing strategy of source-load-storage cooperative control, and the purpose of ensuring a power control result while the power stabilizing potential of each device is fully utilized is achieved. The power fluctuation of the tie line is controlled through source-load-storage three-terminal combination, battery energy storage does not need to be configured, and the investment cost is effectively reduced.

Description

technical field [0001] The invention relates to a technology in the field of smart grid control, in particular to a method and system for synergistically smoothing tie-line power of an electric heating micro-grid source, load and storage. Background technique [0002] The electrothermal microgrid is an important carrier for the consumption of distributed renewable energy, and has the characteristics of coupling and complementarity of electric and thermal energy flows. Unlike traditional power generation methods, renewable energy power generation has great volatility and uncertainty. The increasing penetration of renewable energy in the electric heating microgrid has brought many challenges to the safe and stable operation of the microgrid: in the short time scale, there are large power fluctuations in the connection line between the microgrid and the grid; The mismatch of power consumption in time is increasing, which leads to the problem of system power imbalance. [0003...

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Problems solved by technology

[0007] The present invention aims at the existing technology in order to stabilize the power fluctuation of the connecting line between the micro-grid and the large power grid containing high-permeability renewable energy, it is necessary to configure a large-capacity battery energy storage device; and the existing load demand response method has weak power regulation ability and stabilizes the fluctuation Poor effect and other defects and deficiencies, a method and system for smoothing the power of the electric heating micro-grid source-load-storage collaborative smoothing tie-line are proposed. The power fluctuation of the tie-line is controlled through the three-terminal joint control of the source-load-storage, without the need to configure battery energy storage, effectively reducing investment costs

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