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

Overload protection method and system for power line carrier

A technology for power line carrier and overload protection, which is applied in the direction of emergency protection circuit devices, emergency protection circuit devices, and electrical components for limiting overcurrent/overvoltage, and can solve the problem of large loads of power carrier machines and complete machine failures of power carrier machines. Electricity, economic loss and other issues, to achieve the effect of avoiding economic loss, making significant progress, and highlighting substantive characteristics

Inactive Publication Date: 2018-11-30
国网山东省电力公司惠民县供电公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, the load of the power carrier machine may still be too large, and the power of the whole machine exceeds the maximum power that all power supply units can provide. If the number of power supply units configured cannot meet the power requirements of the power line carrier machine or If several power supply units are abnormal during its operation, the power supply unit will trigger the overcurrent protection, so that the running power carrier machine will be powered off. If the power carrier machine is undertaking more important signal processing work at this time , will cause huge economic losses

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
  • Overload protection method and system for power line carrier
  • Overload protection method and system for power line carrier
  • Overload protection method and system for power line carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 The overload protection method for a power line carrier machine includes the following steps:

[0036] Step 1: Read the peak power of the power supply units in normal operation respectively.

[0037] Step 2: Calculate the sum of the peak powers of the power supply units to obtain the maximum power supply.

[0038] Step 3: Read the actual power of the power consumption units of the power line carrier machine during normal operation.

[0039] Step 4: Calculate the actual power sum of the power consumption units to obtain the total operating power.

[0040] Step 5: Calculate the ratio of the maximum power supply to the total operating power.

[0041] Step 6: When the ratio is smaller than the preset power ratio, reduce the output power of the power line carrier machine.

[0042] The invention provides an overload protection method of a power line carrier machine, which can respectively read the peak power of the running power supply unit and the actual...

Embodiment 2

[0044] Such as figure 2 The overload protection method for a power line carrier machine includes the following steps:

[0045] Step 1: Obtain the status information of each power supply unit respectively, and judge whether the corresponding power supply unit operates normally according to the status information.

[0046] Step 2: When the power supply unit operates abnormally, send an alarm signal to the alarm device, and control the alarm device to give an alarm.

[0047] Wherein, the alarm device here may be a buzzer alarm. Certainly, the present invention does not limit the type of the alarm device, as long as the alarm device capable of realizing the above functions is within the protection scope of the present invention.

[0048] In addition, step 2 of this embodiment may also be performed after step 3, or may be performed at the same time, and the invention is not particularly limited here.

[0049] Step 3: Read the peak power of the power supply units in normal opera...

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 discloses an overload protection method and system for a power line carrier. The peak power of an operating power supply unit, and the actual power of a power using unit of the power line carrier during normal operation can be read correspondingly and are calculated to obtain the maximum power supply power and the total operating power, and when the specific value of the maximum power supply power and the total operating power is smaller than a preset power ratio, the output power of the power line carrier is lowered. The output power of the whole power line carrier can be adjusted according to the maximum power supply power provided by the outside, and the situation that the power supply unit triggers overcurrent protection due to the fact that the actual operating power ofthe power line carrier exceeds the maximum power capable of being provided by the power supply unit can be avoided, that is, the economic loss caused by power outage of the whole power line carrier due to overcurrent protection of the power supply unit can be avoided.

Description

technical field [0001] The present invention relates to the technical field of power communication equipment, and more specifically relates to an overload protection method and system for a power line carrier machine. Background technique [0002] Power line carrier (PLC) is a common device for exchanging protection signals between the ends of the protected line. Power line carrier communication is a unique communication method for power systems, and it is used in almost all countries in the world. It is constructed synchronously with the primary power grid, does not need to set up a separate transmission line, makes full use of power grid resources, and is economical and practical; the power line carrier uses the power line as the carrier, and is not easily damaged by natural disasters and external forces. It can still be transmitted through the coupling signals of other phases, and the reliability is extremely high; the power line carrier is connected to each power plant a...

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): H02H9/02
CPCH02H9/02
Inventor 刘淑娜李延英肖丽刘延冰盛遵慧谷蕾王君玲赵静商玉燕王宪惠
Owner 国网山东省电力公司惠民县供电公司
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