A real-time voltage control method for low-voltage distribution network based on user-side flexible resources

A low-voltage distribution network, voltage control technology, applied in the direction of AC network voltage adjustment, energy storage, photovoltaic power generation, etc., can solve problems such as overvoltage, fluctuating voltage, and increased fluctuation

Active Publication Date: 2022-06-07
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a low-voltage distribution network based on flexible resources on the user side that solves the problems of aggravated voltage fluctuations and overvoltages caused by reverse currents due to the intermittent and volatile characteristics of photovoltaic power generation output. Real-time voltage control method

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  • A real-time voltage control method for low-voltage distribution network based on user-side flexible resources
  • A real-time voltage control method for low-voltage distribution network based on user-side flexible resources
  • A real-time voltage control method for low-voltage distribution network based on user-side flexible resources

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Embodiment Construction

[0024] The following will be combined with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.

[0025] See Figure 1 , a real-time voltage control method for low-voltage distribution network based on flexible resources on the user side, including the following steps:

[0026] S10, establish a voltage demand response model for flexible resources on the user side;

[0027]S20, distributed real-time voltage control of user-side edge nodes;

[0028] S30, edge node voltage control rule optimization based on reinforcement learning.

[0029] See the voltage demand response model for flexible resources on the user side Figure 2 , the cloud platform 10 and the edge node 20 between the data upload and rule issuance, the edge node 20 includes the edge node 20 core, device access SDK, data conversion, data and command preprocessing and connection management, edge node 20 and flexible resources 30 between the data communication and control...

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Abstract

The invention discloses a real-time voltage control method of a low-voltage distribution network based on user-side flexible resources, comprising the following steps: S10, establishing a voltage demand response model of user-side flexible resources; S20, distributed real-time voltage control of user-side edge nodes; S30, edge node voltage control rule optimization based on reinforcement learning. Through the distributed real-time voltage control method of edge nodes based on artificial intelligence technology, the present invention helps to solve the problems of aggravated voltage fluctuations and overvoltages caused by reverse currents due to the intermittent and volatile characteristics of photovoltaic power generation output.

Description

Technical field [0001] The present invention belongs to the field of grid voltage control, particularly relates to a low-voltage distribution network real-time voltage control method based on flexible resources on the user side. Background [0002] In recent years, China has comprehensively developed distributed rooftop photovoltaics and promoted the large-scale application of electric vehicles. Due to the intermittent and fluctuating characteristics of photovoltaic power generation output, large-scale photovoltaic power generation is connected to low voltage, and the distribution network will cause many risks, such as aggravated voltage fluctuations and overvoltage caused by reverse currents. And at present, the charging load of electric vehicles with random and decentralized characteristics will become a new type of load, and a large number of electric vehicles charged during low electricity price periods will lead to undervoltage problems, which will also pose a threat to the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12H02J3/16H02J3/32
CPCY02E70/30
Inventor 黄旭谢强强虞霖云张海波华咏竹
Owner HANGZHOU DIANZI UNIV
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