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Improved droop method control based micro-grid internal frequency zone control method

A control method and frequency partitioning technology, applied in the microgrid field, can solve problems such as system voltage and frequency fluctuations and can no longer adapt to the microgrid control requirements, and achieve the effect of ensuring stability

Inactive Publication Date: 2018-09-28
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This makes the traditional large grid control methods no longer suitable for the control needs of micro grids.
[0003] In view of the situation of the microgrid system, when the energy in the system fluctuates, it often causes the voltage and frequency of the system to fluctuate.

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof. It should also be understood that the terminology used in the de...

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Abstract

The embodiment of the invention discloses a bus frequency for detection of a micro-grid system. a zone where the bus frequency locates is determined based on a preset frequency division standard; andinternal devices of the micro-grid system is controlled based on the zone where the bus frequency locates. By implementation of the embodiment, the system frequency can be stabilized within a scope ofrequirements of a national standard (GB / T12325) by adopting different control strategies for frequencies of different zones, and the system stability is guaranteed.

Description

technical field [0001] The invention relates to the technical field of microgrids, in particular to an improved microgrid internal frequency partition control method based on droop method control. Background technique [0002] Compared with the traditional large power grid, the microgrid is quite different in terms of structure, power supply and load. This makes the traditional large grid control methods no longer suitable for the control needs of micro grids. [0003] In view of the situation of the microgrid system, when the energy in the system fluctuates, it often causes the voltage and frequency of the system to fluctuate. When the system frequency changes, it is necessary to adopt an appropriate control strategy to ensure the stability of the system. Contents of the invention [0004] The purpose of the embodiments of the present invention is to provide an improved micro-grid internal frequency partition control method based on the droop method, so as to adopt a no...

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Application Information

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IPC IPC(8): H02J3/24
CPCH02J3/24
Inventor 王小利蒋保臣
Owner SHANDONG UNIV