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

A technology of micro gas turbine and optimization method, which is applied in the direction of gas turbine device, wind motor combination, engine, etc., and can solve the problems of rare research and reports

Inactive Publication Date: 2012-01-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] However, the optimization of microgrid power supply based on the economic complementary chara

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

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Embodiment Construction

[0026] The accompanying drawings disclose non-restrictive schematic flow diagrams of preferred embodiments involved in the present invention; the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] 1- Interpretation of microgrid power supply mode in grid-connected mode

[0028] From the perspective of meeting the load demand of the microgrid, the power supply mode of the microgrid in the grid-connected mode can be divided into power supply from the large grid to the microgrid, start-up of renewable DG such as wind power generation and photovoltaic power generation, input of non-renewable DG such as fuel cells and micro gas turbines, and interruption IL4 class.

[0029]The power supply cost paid by the large grid to participate in the power supply of the microgrid is the power purchase cost (equal to the product of the power supply price and the power supply quantity), and the power supply cost p...

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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...

Claims

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Application Information

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IPC IPC(8): H02J3/38F02C6/00F03D9/00F03D9/25
CPCY02E10/763Y02E10/725Y02E10/72Y02E10/76Y02P80/14
Inventor 周雪妍陈喆罗运虎谢少军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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