Supercharge Your Innovation With Domain-Expert AI Agents!

Synthetic monitoring method and device in medium-voltage power supply system

A power supply system, automatic monitoring technology, applied in circuit devices, emergency protection circuit devices, information technology support systems, etc., can solve problems such as user influence and short-term power outages

Active Publication Date: 2011-04-20
CHANGCHUN POWER SUPPLY OF JILIN POWER +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, we adopted the method of pulling the road to select the faulty line, causing a short-term power outage on the intact line that should not be blacked out, which has a great impact on users

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
  • Synthetic monitoring method and device in medium-voltage power supply system
  • Synthetic monitoring method and device in medium-voltage power supply system
  • Synthetic monitoring method and device in medium-voltage power supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] refer to figure 1 , figure 2 , first press figure 2 Configure and make the device of the present invention, and install it in the substation, connect each busbar voltage transformer, the current transformer in each loop and the secondary line of the zero-sequence current transformer on the distribution line cable into the terminal block of the device, It must be ensured that the polarity of the incoming secondary line is correct; then follow the steps below:

[0025] 1. After the device is put into operation, all the voltages and currents of the substation can be sent to the respective sampling and holding boards in the device for data sampling. The number of sampling points for each cycle is not less than 96 points, and the sampling times of each quantity must be consistent with each other. Each sampling data should be composed of amplitude, direction and time;

[0026] 2. After the sampling data is converted into digital quantities by the A / D conversion module, i...

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 comprehensive automatic monitoring method for a middle-voltage power supply system, which solves the problem that a faulty line is selected correctly in a short time when an isolated neutral system or a small current grounding system has single-phase grounding failure and puts forward an opinion that during line selection process, a comparison is made between the time value of reference quantity and the time value of zero-sequence current at the same time and a method comprising the steps of sampling and wave-recording for 24 hours, continuously recording the condition of each electrical quantity, carrying out data analyzing and processing, releasing warning, displaying and storing results once abnormal conditions occur and unloading the results by a remote transmitting system. The method has simple calculation and high correctness. As a device collects all electrical quantities of a power substation, the statistics of situation that a main transformer is impacted by short cut, analysis on the harmonic components of current and the statistical calculation of the qualification rate of voltage can be achieved.

Description

Technical field: [0001] The invention relates to the monitoring of the running conditions of a power supply system, in particular to a comprehensive automatic monitoring method and device for a medium-voltage power supply system. Background technique: [0002] At present, although the automation level in the substation is very high, it does not monitor the electrical quantity, conduct online analysis on the normal and abnormal operation of the system, and issue correct alarm information in time. For example: neutral point ungrounded system (or small current grounded system) single-ground fault line selection, statistics of short-circuit impact of main transformer, harmonic analysis, statistical calculation of voltage pass rate, etc. [0003] The 66kV to 10kV power supply system in my country is mostly a neutral point ungrounded system or a small current grounded system. The system is allowed to continue to operate for a period of time when a single-phase ground fault occurs...

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): H02H7/26H02J13/00
CPCY04S10/16Y04S10/20Y02E60/723Y02E60/725Y02E60/00
Inventor 黄沛昕
Owner CHANGCHUN POWER SUPPLY OF JILIN POWER
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com