Method for online misoperation prevention in 35kV-110kV power grid accident voltage loss area

A power grid accident and anti-misoperation technology, applied in the direction of electrical components, line transmission parts, line transmission monitoring/testing, etc., can solve the problem of simultaneous voltage loss in 35kV substations, expand the scope of accidents, improve the recovery of power transmission efficiency, The effect of preventing power transmission

Active Publication Date: 2021-01-05
LONGYAN POWER SUPPLY COMPANY STATE GRID FUJIAN ELECTRIC POWER +1
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The loss of voltage in a 35kV substation means a power outage for hundreds of households in a town, and the loss of voltage in a 110kV substation may ca

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
  • Method for online misoperation prevention in 35kV-110kV power grid accident voltage loss area

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019]The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0020]Seefigure 1, A method for online misoperation prevention in the accidental voltage loss area of ​​35kV~110kV power grid, including the following steps:

[0021]Step S1. Generate a network power flow diagram, obtain the topology relationship between each device node through the built-in topology system of the power grid, and intercept the topology relationship between the devices after the switch accident occurs when a switch accident trip occurs or the switch is abnormally displaced. Topological relationship to generate network flow diagram;

[0022]Step S2: Search for substations that may lose voltage. According to the network power flow diagram, start from the substation where the switch accident occurred, and use the accident switch as the demarcation point for the inspection of the substation that may lose voltage. Judge one by one. After a 10-second delay, if th...

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 relates to a method for online misoperation prevention in a 35kV-110kV power grid accident voltage loss area, which comprises the following steps: intercepting a topological relation between equipment after a switch accident occurs and generating a network tidal current diagram through a built-in topological system of a power grid; according to the network tidal current diagram, taking the transformer substation with the switch accident as a starting point and taking the switch with the accident as a demarcation point of the transformer substation with possible voltage loss during inspection, judging the transformer substations with tidal current connection one by one, and when the bus line voltage of one transformer substation is inspected to drop by 90% suddenly or is lessthan 1kV, determining that the transformer substation is a no-voltage transformer substation; performing self-inspection on all the voltage-loss substations, and determining whether the voltage-loss substations have abnormal conditions or not; and when an abnormal condition exists in the transformer substation without voltage, automatically locking the remote control function of the transformer substation, and sending a control instruction which is used for confirming whether to continue locking or unlocking and contains abnormal condition information to the remote control terminal.

Description

technical field [0001] The invention relates to an on-line anti-misoperation method in a 35kV-110kV power grid accident voltage loss area, which belongs to the field of power system dispatching. Background technique [0002] With the development of the power grid, the structure of the power grid is more complex, and the amount of power grid monitoring information is increasing due to the increase in substation equipment, and the workload of power grid monitoring is also increasing. At present, county-level power grid monitors monitor about 50 35kV-110kV substations and hundreds of thousands of substation signals in real time. When the weather is bad or a large area of ​​switches trips, it is easy to cause one or more substations to lose voltage. The monitoring personnel need to simultaneously process and analyze hundreds of abnormal signals sent at intervals including accident trips, equipment abnormalities, DC systems, and public measurement and control. It takes a long ti...

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
IPC IPC(8): G06F30/18G06Q50/06H04B3/46H04L29/08G06F9/451
CPCG06F30/18H04L67/025G06F9/452H04B3/46G06Q50/06Y04S10/16
Inventor 陈南辉钟秋添卢晓明范海威徐郑琦朱志鑫黄燕帼曹晶吴益斌程华新王夏菁林榕张有玉马中琼林成铿
Owner LONGYAN POWER SUPPLY COMPANY STATE GRID FUJIAN ELECTRIC POWER
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