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Implementation method of energy internet suitable for large-scale distributed power generation

A technology of distributed power supply and energy Internet, which is applied in the field of energy Internet to ensure the quality of power supply, the effect is remarkable, and the effect of meeting safety and reliability

Active Publication Date: 2018-01-19
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an implementation method of energy Internet suitable for large-scale distributed power supply, to solve the problem of reasonable flow and optimal distribution of energy in the complex distribution network with closed-loop operation of large-scale distributed power supply. Realize flexible scheduling, on-demand scheduling and optimal scheduling of energy while meeting the requirements of system safety and reliability

Method used

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  • Implementation method of energy internet suitable for large-scale distributed power generation
  • Implementation method of energy internet suitable for large-scale distributed power generation
  • Implementation method of energy internet suitable for large-scale distributed power generation

Examples

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Embodiment 1

[0074] Taking the hand-in-hand single-ring network as an example below, the technical solution of the present invention is described as follows:

[0075] A hand-in-hand single-ring network consists of three feeders with "two vertical and one horizontal". Bus I and bus II can be different substations or different buses in the same substation, or the same bus in the same substation. Each feeder is divided into two Section, numbered L 1 , L 2 ,...,L 6 , nodes a and b are grid-connected points of distributed power, and nodes c and d are heavy-load nodes that cannot continuously meet the power demand for a long time. The implementation method of the energy Internet suitable for consuming large-scale distributed power provided by the present invention is applied to the structural diagram of the hand-in-hand single-ring network. image 3 shown. Among them, L 7 It is a special flexible power flow control connection line containing UPFC, L 8 They are simple and dedicated tie line...

Embodiment 2

[0085] Taking the ring network with three power supplies as an example below, the technical solution of the present invention is described as follows:

[0086] A three-power hand-held ring network is composed of four feeders "three vertical and one horizontal". Buses I, II and III can be different substations or different buses in the same substation, or the same bus in the same substation. Each feeder is divided into two section, numbered L 1 , L 2 ,...,L 8 , nodes a and c are heavy-duty nodes that cannot continuously meet the power demand for a long time, and node b is the grid connection point of distributed power. The implementation method of the energy Internet suitable for consuming large-scale distributed power sources provided by the present invention is applied to the structure schematic diagram of the three-power handle ring network as shown Figure 4 shown. Among them, L 9 It is a special flexible power flow control connection line containing UPFC, L 10 They a...

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Abstract

An implementation method for an energy Internet absorbing a large-scale distributed power supply. The method comprises: firstly, according to a network structure and load characteristics of a closed-loop operating power distribution network and the grid-connection situation of distributed power supplies, selecting key nodes of which energy requires optimal distribution from the power distribution network; and then optimally configuring a double-level regulation and control connection line among the selected key nodes, and reasonably configuring an electrical isolation device in the closed-loop operating power distribution network, so as to configure local protection by taking the electrical isolation device as a boundary node. By means of the method, the problems of reasonable flow and optimal configuration of energy in a complex closed-loop operating power distribution network containing large-scale distributed power supplies can be effectively solved; and flexible scheduling, scheduling as required and optimal scheduling of energy can be realized on the premise of meeting the requirements of system security and reliability, so that a cost-effective solution is provided for an energy Internet at a level of constructing a power distribution network.

Description

Technical field: [0001] The present invention relates to the technical field of power distribution network, and more specifically relates to an implementation method of energy internet suitable for accommodating large-scale distributed power sources. Background technique: [0002] The traditional distribution network mostly adopts the method of "closed-loop design and open-loop operation", and the power flow presents a natural distribution according to the characteristics of the topology of the power grid. However, with the increasing demand for large-scale distributed power grid connection and higher power supply reliability, the future distribution network will gradually develop into an energy Internet with the characteristics of renewable, distributed, interconnected, and intelligent, realizing wide-area The flexible scheduling, on-demand scheduling and optimal scheduling of energy within the scope meet the safe and reliable access of large-scale distributed power sources...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/06H02J3/381H02J3/00
Inventor 赵珊珊宋晓辉孟晓丽盛万兴
Owner STATE GRID CORP OF CHINA