Uncertain factor identification method at operation of microgrid

An identification method and micro-grid technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as difficulty in accuracy and complex distribution network planning.

Inactive Publication Date: 2018-06-19
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0002] With the construction and development of facilities such as distributed power sources and micro-grids, there are more and more uncertain factors in the distribution network, and more factors need to be considered in distribution network planning. more complex and less accurate

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  • Uncertain factor identification method at operation of microgrid
  • Uncertain factor identification method at operation of microgrid
  • Uncertain factor identification method at operation of microgrid

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Embodiment Construction

[0062] The present invention will be further described below. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

[0063] The uncertainty of the power supply and load in the microgrid (group) determines the overall operating characteristics of the microgrid. If the uncertainty of the distributed power supply and load is determined, then the overall operating characteristics of the microgrid are also determined. Using the system disturbance data caused by uncertain factors when the microgrid is connected to the grid, the characteristic components of the disturbance data are extracted, and the corresponding relationship between the characteristic components and uncertain factors is established, so as to determine the uncertain factors, and then analyze the microgrid under the influence of uncertain factors. operating characteristics. The characteristics...

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Abstract

The present invention discloses an uncertain factor identification method at operation of a microgrid. The uncertain factor identification method comprises the steps of utilizing the fault disturbancedata of the microgrid (group) grid-connected access points to extract the uncertain factor characteristics of the microgrid, wherein the characteristic information contains the information of the uncertain factors, such as the frequency, the amplitudes, the attenuation coefficients, the phases, etc., and adopting an extension Prony method to identify the uncertain factors. The uncertain factor identification method of the present invention utilizes a characteristic mode of the disturbance data to describe the dynamic characteristics of the uncertain factors, and determines a microgrid grid-connected planning and simulation model on the condition of not needing to specify the topological structure and the operation parameter of the microgrid.

Description

technical field [0001] The invention relates to a method for identifying uncertain factors during operation of a microgrid, and belongs to the technical field of electric power operation and control. Background technique [0002] With the construction and development of facilities such as distributed power sources and micro-grids, there are more and more uncertain factors in the distribution network, and more factors need to be considered in distribution network planning. More complicated and more difficult to be precise. As the link between distribution network and distributed power generation, the amount of power and information exchange between microgrid and distribution network is increasing, and it shows great potential in improving the reliability and flexibility of power system operation. When the microgrid is connected to the grid, it is an organic whole with the distribution network, which can be flexibly connected and disconnected, and its intelligence and flexibi...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06H02J3/00G06F17/50
CPCG06Q10/067G06Q50/06G06F30/20H02J3/00H02J2203/20Y02E60/00
Inventor 蔡昌春任璐胡钢邬智俊李森
Owner HOHAI UNIV CHANGZHOU
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