Optimizing method for power supply volume of micro gas turbine adopting microgrid under grid-connected mode

Abstract

The invention discloses an optimizing method for the power supply volume of a micro gas turbine adopting a microgrid under a grid-connected mode. The optimizing method comprises the following steps of: (1) classifying power supply modes: classifying the power supply mode of the microgrid under the grid-connected mode into four classes, namely power supply from a large power grid to the microgrid, regenerative distribution type power generation, non-regenerative distribution type power generation and interruptible load IL; (2) quantizing the power supply costs of various power supply modes; and (3) providing a mathematical model for optimizing the power supply volume of the micro gas turbine based on the cooperative optimal theory, wherein the mathematical model is established according to the target of minimizing the summation of the power supply costs from various power supply modes, thereby acquiring the power supply optimizing quantity P(g, t.0) of the micro gas turbine. Therefore, according to the optimizing method disclosed by the invention, on the premise of meeting the load requirement of the microgrid, the characteristic of economic mutual complement of various supply modes for the microgrid under the grid-connected mode is fully utilized, and the relationship among various power supply modes is comprehensively considered so as to improve the power supply economy of the microgrid under the mode and further realize the optimization for the power supply volume of the micro gas turbine.

Description

technical field [0001] The invention relates to a power supply method of a micro-gas turbine in a micro-grid in a grid-connected mode, and belongs to the technical field of micro-grid operation and control. Background technique [0002] The microgrid optimization problem includes two aspects: the optimization of the backup configuration of the microgrid and the optimization of the power supply mode. The essence of the optimization problem of the power supply mode of the microgrid is to study how to reasonably Arranging various power supply methods to coordinate microgrid power supply reliability and power supply economy is an economic dispatch problem, and its goal is to minimize the cost of power supply. [0003] For a long time, research on the optimization of power supply methods has been concentrated on large power grids, mainly focusing on the power supply methods of power supply companies in two markets (short-term and long-term) or multiple markets (long-term contract...

AI Technical Summary

Problems solved by technology

[0004] However, the optimization of microgrid power supply based on the economic complementary characteristics of various power supply modes under the grid-connected mode is relatively rare at present.

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