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Method and device for determining access mode of distributed power supply

A technology of distributed power supply and access mode, applied in circuit devices, electrical components, AC network circuits, etc., can solve problems such as voltage exceeding limit, fluctuation, affecting equipment safety and operational reliability, etc.

Active Publication Date: 2020-10-23
GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Excessive voltage rise will cause a series of operational problems, which will lead to problems such as voltage limit and fluctuation, affecting equipment safety and operational reliability

Method used

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  • Method and device for determining access mode of distributed power supply
  • Method and device for determining access mode of distributed power supply
  • Method and device for determining access mode of distributed power supply

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Embodiment Construction

[0096] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of them. implementation. Based on the implementation manners in the present disclosure, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

[0097] It should be noted that, the above method implementations are described in a progressive manner, and each implementation implementation focuses on the differences from other implementations, and the same and similar parts of the various implementations can be referred to each other.

[0098] The low-voltage power distribution area includes a transfo...

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Abstract

The present application relates to the field of distributed power generation technology, in particular to a method and a device for determining a distributed power generation access mode, the method comprising: constructing a target station area model; constructing a working condition matrix; wherein, each element in the working condition matrix corresponds to a working condition, and each workingcondition includes the operation data of the voltage of the high voltage side of the transformer and the load rate of the target stage area; under the condition that the DG is connected to the end ofthe target station area, calculating the tolerance permeability of each working condition in the working condition matrix; summarizing the tolerance permeability under each working condition to obtain the recommended value of tolerance permeability for DG access in the target area; determining the DG access mode of the target station area according to the DG penetration rate to be accessed in thetarget station area stored in advance and the recommended value of the tolerance penetration rate. The present application can avoid the overshoot and fluctuation of the grid voltage caused by the DGaccess, so that the grid voltage is more stable.

Description

technical field [0001] The present application relates to the technical field of distributed power generation (Distribution Generation, DG), and in particular to a method and device for determining a distributed power access mode. Background technique [0002] DG is an emerging power generation technology, including solar power generation, wind power generation, biomass power generation, etc., which has the advantages of high efficiency and environmental protection. DG needs to be integrated with the large power grid. DG mainly connects and operates in the low-voltage distribution network, and its connection makes the traditional network of single power supply radiation type become an active network with multiple power sources scattered and distributed. The access of DG will cause different degrees of voltage rise in the entire distribution area. When the capacity of the connected DG is larger, the penetration rate is larger, and the voltage rise is larger. Excessive volt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/381H02J3/003H02J2203/20
Inventor 黄智鹏陶飞达游景方杨夏王东芳熊洽钟运平
Owner GUANGDONG POWER GRID CO LTD
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