Partition optimization method and system for UHV AC/DC feed-in receiving-end power grid

A technology of receiving-end power grid and zoning optimization, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problem of not fully reflecting the characteristics of UHV AC and DC feeding into the receiving-end power grid system

Active Publication Date: 2018-06-29
CHINA ELECTRIC POWER RES INST +2
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, clustering or classification methods based on various electrical distances have become the mainstream in the study of power grid partitioning problems, but these algorithms are mostly based on the structural characteristics of the power grid, or static indicators such as voltage-reactive power sensitivity, and rarely involve the dynamic electrical characteristics of the power grid , and cannot fully reflect the system characteristics of the UHV AC / DC fed into the receiving end grid

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Partition optimization method and system for UHV AC/DC feed-in receiving-end power grid
  • Partition optimization method and system for UHV AC/DC feed-in receiving-end power grid
  • Partition optimization method and system for UHV AC/DC feed-in receiving-end power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0160] Embodiment: The present invention takes the 2020 Beijing-Tianjin-Tangtang planning power grid as an object to verify the effectiveness of the proposed method.

[0161] In the Beijing-Tianjin-Tangshan planning power grid in 2020, there are 3 UHV substations in Beijing East, Beijing West, and Tianjin South, with 3 ±800 kV UHV DC feed-in, respectively located in Tangshan, Tianjin, and Langfang. Utilize the method proposed in the present invention to obtain the Pareto optimal solution, and the concrete grid partition scheme schematic diagram is as follows Figure 4 shown.

[0162] Carry out electrical simulation calculation on the partition plan, the power flow diagram is as follows Figure 5 shown. The results show that the short-circuit current is within the range of the interrupting capacity of the switch, the power flow distribution of the power grid is uniform, and the static safety requirements can be met under the "N-1" mode. The system is stable.

[0163] Those ...

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

No PUM Login to view more

Abstract

The invention provides a partition optimization method and a partition optimization system for an UHV AC / DC feed-in receiving-end power grid. The partition optimization method comprises the steps of:determining a power grid key channel set of a power grid according to a power grid partitioning method based on a complex community structure theory; and performing multi-objective optimization iterative calculation on randomly generated partitioning schemes based on the power grid key channel set according to a non-dominated sorting genetic algorithm NSGA-II based on fast classification, so as toobtain the optimal partitioning scheme set. The partition optimization method and the partition optimization system combine the complex community structure theory with the non-dominated sorting genetic algorithm NSGA-II based on fast classification and apply them to grid planning, thus the problem of curse of dimensionality of a large power grid is avoided, and the method is simple, practical andhigh in operability.

Description

technical field [0001] The invention relates to a grid partition method and system, in particular to a partition optimization method and system for UHV AC / DC feeding into a receiving-end grid. Background technique [0002] Grid partitioning has always been an important issue in grid planning, and this issue will become more prominent for receiving grids with intensive UHV AC and DC feeds. For the traditional power grid with 500 kV as the main grid, the division of the power grid is mainly based on the long-term accumulated operating experience of administrative regions and operators, and usually rarely changes. Especially with the development of UHV power grid, 1000 / 500 kV electromagnetic ring network will be gradually formed, the concept of administrative area of ​​large power grid is gradually weakened, and the traditional zoning method often cannot reflect the actual zoning characteristics of the power grid. [0003] Grid partitioning can be regarded as a combinatorial o...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 覃琴施浩波韩奕周勤勇张一驰苏丽宁
Owner CHINA ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap