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Microgrid voltage unbalance compensation method based on Gossip communication algorithm

A technology of voltage unbalance and compensation method, which is applied in the direction of AC network voltage adjustment, sustainable manufacturing/processing, climate sustainability, etc., and can solve the problem of difficult to take into account both voltage quality and negative sequence current sharing, and difficult interface converters Compatible control, little consideration of plug-and-play requirements for compensation capabilities, etc., to achieve the effect of solving power quality and unbalanced current balance, good applicability, and high power quality

Inactive Publication Date: 2015-09-09
北京亿利智慧能源科技有限公司
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Problems solved by technology

However, due to the difference in line impedance, it is difficult for these solutions to balance voltage quality and negative-sequence current sharing at the same time, and rarely consider the compensation capabilities of different DRs and the plug-and-play requirements of DRs
In addition, the current scheme is difficult to be compatible with the interface converter control of renewable energy in the traditional current source control mode

Method used

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  • Microgrid voltage unbalance compensation method based on Gossip communication algorithm

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0018] Such as figure 1 As shown, the present invention proposes a new simple and effective method for realizing microgrid voltage unbalance compensation based on the Gossip communication algorithm when the microgrid is running in an isolated island. The specified microgrid voltage unbalance degree and the reasonable sharing of unbalanced current among DRs.

[0019] The DR is divided into voltage source control type and current source control type, and the corresponding local controllers are voltage source control type local controller and current source control type local controller. This implementation example takes n voltage source controlled local controllers and m current source controlled local controllers as...

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Abstract

The invention provides a microgrid voltage unbalance compensation method based on a Gossip communication algorithm and belongs to the technical field of microgrid control. The method is implemented through two control layers. Primary control achieves unbalance current balancing control of different DRs and plug-and-play functions of the DRs by using uses a local controller and a Gossip algorithm. Secondary control achieves microgrid voltage unbalance degree requirements by means of an integrated controller. The method solves a problem that power quality is difficult to be simultaneously solved with unbalance current balancing, is difficult to be compatible with a current source control mode DR, and is low in flexibility in a conventional unbalance compensation method.

Description

technical field [0001] The invention belongs to the field of microgrid control, in particular to a microgrid voltage unbalance compensation method based on a Gossip communication algorithm. Background technique [0002] With the vigorous development of distributed power generation technology, microgrid technology has attracted worldwide attention, and it is considered to be one of the most effective ways to manage the geographically dispersed and large number of distributed resources (distributed resource, DR) that may appear in the future. When the microgrid is operating in an isolated state, due to the loss of the support of the large power grid, how to ensure high power supply quality is a problem that needs to be solved. [0003] Aiming at this problem, one solution is to add a series or parallel compensator to improve the voltage quality. However, these solutions require additional investment in equipment. [0004] On the other hand, a large number of DRs need to be c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12
CPCY02P80/14H02J3/12
Inventor 唐芬吴学智童亦斌荆龙
Owner 北京亿利智慧能源科技有限公司
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