Full DC power flow controller and its control method for DC transmission system
A technology of DC transmission system and power flow controller, which is applied in the direction of AC network circuit, circuit device, power transmission AC network, etc. It can solve problems such as complex structure, achieve low voltage stress, improve power flow control dimension, design difficulty and device cost low effect
Active Publication Date: 2020-06-12
SHANGHAI JIAOTONG UNIV
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the device uses an AC transformer as an energy hub, presenting DC / AC / DC two-stage conversion, and the structure is relatively complicated.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0068] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0069] A full DC power flow controller suitable for a DC power transmission system provided according to the present invention includes a battery part, a second control part and a line part;
[0070] The line part includes a line main body, a first control part, A node, B node, a line S end and a line T end; the battery part includes a battery element and a third control part;
[0071] The line S end and the line T end are respectively the two ends of the line main body; along the direction from the lin...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a full DC power flow controller and a control method thereof suitable for a DC power transmission system, comprising a battery part, a second control part and a line part. The line part comprises a line main body, a first control part, a node A, a node B, a line S end and a line T end; The S end of the line and the T end of the line are two ends of the line main body respectively; A node, a first control part and a B node are arranged on the main body of the line along the direction from the S end of the line to the T end of the line. The battery part is respectively connected with node A and node B through a second control part. The invention has the advantages of symmetrical structure, no need to bear system voltage and no need to external voltage source, various application scenes, low design difficulty and device cost, and can realize the active control of a plurality of lines and promote the power flow control dimension of a complex multi-terminal DC power system.
Description
technical field [0001] The present invention relates to the field of power electronic converters and DC power transmission, in particular, to a full DC power flow controller suitable for a DC power transmission system and a control method thereof, especially to DC power flow controller (DC Power Flow Controller, DCPFC) circuit topology design and operation Control Technology. Background technique [0002] With the rapid development of wind power, solar power and other new energy sources, as an important technical means for large-scale grid connection and long-distance transmission of renewable energy, HVDC transmission technology has developed from conventional point-to-point DC transmission to multi-terminal DC transmission. It may be further developed into a DC grid. The complex structure of the DC power grid (such as ring network and radial network) increases the flexibility and redundancy of the system, and also increases the number of uncontrollable branches. It is di...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02J3/36
CPCH02J3/36H02J3/46H02J2203/20Y02E60/60
Inventor 朱淼徐莉婷刘斯棋钟旭蔡旭
Owner SHANGHAI JIAOTONG UNIV