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A control method for reducing load shedding cost of island microgrid

A control method, technology of microgrid, applied in electrical components, circuit devices, sustainable manufacturing/processing, etc.

Inactive Publication Date: 2016-01-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, sudden changes in power generation and load pose a challenge to the frequency stability of island-mode microgrids

Method used

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  • A control method for reducing load shedding cost of island microgrid
  • A control method for reducing load shedding cost of island microgrid
  • A control method for reducing load shedding cost of island microgrid

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be described in detail below in combination with the accompanying drawings and implementation examples. It should be understood that the specific implementation cases described here are only used to explain the present invention, and are not intended to limit the invention.

[0043] like figure 1 As shown, a control method for reducing the load shedding cost of an island microgrid in the present invention includes the following steps:

[0044] Step 10) The microgrid adopts a multi-agent system, and the multi-agent system includes two layers: the first layer is an information sharing layer used to realize the collection and sharing of distributed global information; the second layer is used to realize distributed power generation units and The local control layer of load control; there are n agents in the multi-agent system; each agent obtains g...

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Abstract

The invention discloses a controlling method for reducing load shedding costs of an island microgrid. The controlling method includes that (10) total power vacancy of the microgrid can be obtained, and when power vacant fault happens to the microgrid in an island mode, a multi-agent system monitors power disturbance of the whole microgrid to obtain the total power vacancy of the microgrid; (20) sharing of the total power vacancy can be achieved; (30) local load shedding costs and marginal costs are measured and calculated; (40) load shedding quantity of each load is measured and calculated, and distributed cost optimization of load shedding can be performed by means of an average unification algorism to obtain load shedding quantity of each load; (50) load shedding operation can be performed, distributed optimum load shedding of the island microgrid can be achieved, and the microgrid frequency can return to a rated value. The controlling method is a complete distributed controlling method, distributed sharing of overall information can be achieved, the costs and the marginal costs are considered, load shedding in accurate load shedding quantity can be preformed, and accurate load shedding cost optimization can be performed.

Description

technical field [0001] The invention belongs to the field of micro-grid operation control, and in particular relates to a control method for reducing the load shedding cost of an isolated island micro-grid. Background technique [0002] With the depletion of the earth's resources and people's attention to environmental issues, the access to renewable energy has attracted more and more attention from all over the world. Microgrid is an emerging energy transmission mode that increases the penetration rate of renewable energy and distributed energy in the energy supply system, and its components include different kinds of distributed energy, user terminals of various electrical loads and / or thermal loads, and Related monitoring and protection devices. [0003] The power supply inside the microgrid is mainly responsible for energy conversion by power electronic devices and provides necessary control; the microgrid is a single controlled unit compared to the external large power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCY02P80/14
Inventor 柳伟薛帅顾伟陈明
Owner SOUTHEAST UNIV
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