Power distribution network flexible soft switch optimal configuration method considering control mode conversion
A technology of control mode and optimized configuration, applied in circuit devices, AC networks with the same frequency from different sources, AC networks with energy trade/energy transmission authority, etc. It can solve the limited number of scenarios and cannot cope with the penetration of distributed power. rate, configuration research, etc.
Pending Publication Date: 2020-11-17
TSINGHUA UNIV +1
View PDF0 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the number of scenarios generated in this literature is limited, and it cannot deal with the security risks of the distribution network caused by extreme scenarios when the penetration rate of distributed generation is high.
In addition, there are few researches on SOP configuration in active distribution network at present. After the access of high-penetration renewable energy, the optimal configuration of SOP is worthy of further research.
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
[0074] This method proposes an optimal configuration method for flexible soft switches in distribution networks considering control mode conversion. The two-layer planning architecture involved is as follows: figure 1 As shown, the method includes the following steps:
[0075] (1) According to the flexible soft switch control mode, establish the flexible soft switch control model, including the following steps:
[0076] The method of the present invention takes the flexible soft switch based on the back-to-back voltage source converter as the research object, and its basic structure is shown in the attached drawing figure 2 As shown, two control modes of the flexible soft switch are proposed. In normal operation, a converter implements a DC voltage (V dc ), another converter realizes the control of the transmitted active power (P). Since each converter can control two state quantities at the same time, the converter can also control reactive power (Q) or AC side voltage (V...
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 relates to the technical field of power distribution system automation, in particular to a power distribution network flexible soft switch optimal configuration method considering control mode conversion. According to the method, the influence of REG randomness is considered, and an SOP two-layer planning model is established based on SOP control mode conversion: the upper layer takes the minimum comprehensive planning cost including annual power distribution network operation cost and annual SOP investment maintenance cost as an objective function and plans plans the position capacity of the SOP, and the lower layer performs optimization scheduling on SOP transmission power and DG reduction, converts an SOP control mode for normal and risk operation scenes, optimizes the operation cost in the normal scene, and optimizes the voltage deviation in the risk scene. According to the method, the voltage safety problem caused by REG random output can be effectively solved, the REG absorption capacity of the power distribution network is enhanced, and lower investment and operation cost are ensured on the basis of safe operation.
Description
technical field [0001] The invention relates to the technical field of power distribution system automation, in particular to a distribution network flexible soft switch optimization configuration method considering control mode conversion. Background technique [0002] High penetration distributed generation (distributed generation, hereinafter referred to as DG) grid connection is the development trend and important feature of the future power distribution system. Among them, renewable energy generation (renewable energy generation, hereinafter referred to as REG) with strong randomness such as wind power and photovoltaics has greatly affected the power flow distribution and voltage stability of the system, and brought security risks and risks to the planning and operation of the distribution network. new challenge. In order to meet the requirements of connecting a large number of distributed power sources to the distribution network, and at the same time realize the flex...
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 Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/46H02J3/06
CPCH02J3/008H02J3/381H02J3/466H02J3/06H02J2203/10H02J2203/20H02J2300/24H02J2300/28H02J2300/40Y02E10/56
Inventor 胡泽春丛鹏伟唐亮孙辰军王卓然
Owner TSINGHUA UNIV