Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for fast acquisition of transmission capacity range of power grid

A technology of power transmission capacity and acquisition method, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the grid operation and control restrictions, does not consider the various combination modes of the unit and DC, and cannot give the complete range of cross-section power transmission capacity And other issues

Active Publication Date: 2017-07-14
CHINA ELECTRIC POWER RES INST +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current power grid operation, when analysts calculate the power transmission capacity of the section, they do not consider the various combination modes of the unit and the DC, so they can only give the power transmission capacity of the section corresponding to several typical modes, and cannot give the complete transmission capacity of the section. interval, which brings great restrictions to the operation and control of the actual power grid, and often requires a large number of simulation calculations when calculating the transmission capacity

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
  • A method for fast acquisition of transmission capacity range of power grid
  • A method for fast acquisition of transmission capacity range of power grid
  • A method for fast acquisition of transmission capacity range of power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0082] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0083] Such as figure 1 As shown, the present invention provides a method for quickly obtaining the transmission capacity interval of the power grid, the method comprising:

[0084] I-1. After N-1 faults occur on each line on the section of the power grid, calculate the power flow transfer ratios of the remaining lines on the section;

[0085] Calculate the sensitivity of the active power changes of the sending end side and receiving end side of the section...

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 quick acquiring method for a transmission capacity range of a power grid. The quick acquiring method comprises the following steps of calculating a current transfer ratio of a section line (N-1) after fault of the section line (N-1) and fault restrained transmission capacity of the section line (N-1) to obtain a restrained line; gradually adjusting units of two sides or direct-current power according to a forward sequence and an inverted sequence of absolute values of the sensitivity of the restrained line until the power of a section reaches the limit so as to obtain the transmission capacity range of the section. By the technical scheme, a complete range of transmission capacity of the section can be calculated, the transmission capacity range of the power grid can be calculated quickly without a large amount of simulating calculation, a technical support is provided for flexible arrangement of a running mode, and the acquisition efficiency on the transmission capacity range of the power grid is improved. Moreover, the quick acquiring method for the transmission capacity range of the power grid can be used for online analysis control and offline simulating analysis of an electrical power system, and safe and stable running of the power grid is guaranteed.

Description

technical field [0001] The invention relates to a method for estimating power grid transmission, in particular to a method for quickly acquiring power transmission capacity intervals of the grid. Background technique [0002] With the development of society and economy, the installed capacity and load level in the power grid are increasing, and the structure of the power grid is also being strengthened. The transmission capacity of more and more transmission sections in the power grid is constrained by thermal stability. The transmission capacity is the maximum transmission power allowed by the transmission system between power systems, or from one local system to another in the power system. Therefore, the calculation of power transmission capacity of the power grid is the basis for ensuring the safe and reliable operation of the power grid. Under the constraints of the available transmission capacity of the power grid, adopting a reasonable scheduling method can not only t...

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 Patents(China)
IPC IPC(8): H02J3/00
Inventor 刘明松张健曾兵屠竞哲易俊印永华
Owner CHINA ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com