Dynamic Protocol Switching for Abnormal Waveform Data Transmission

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Solution Overview

Problem

Conventional abnormal waveform monitoring systems in distribution systems are inefficient in transmitting large-capacity data, such as voltage and current waveforms, due to their reliance on the Distributed Network Protocol (DNP), which leads to increased analysis time and delays in responding to faults.

Innovation Solution

A system and method that dynamically switch between data transfer protocols based on data capacity, using Distributed Network Protocol (DNP) for smaller data sets and File Transfer Protocol (FTP) or Transmission Control Protocol (TCP) for larger data sets, allowing for quick transmission of abnormal waveforms from Remote Terminal Units (RTUs) to a Front End Processor (FEP) and then to a main server, enabling rapid analysis and fault management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the Distributed Network Protocol (DNP) is used for data transmission in conventional abnormal waveform monitoring systems, then the system can transmit voltage and current waveform data, but the transmission speed is slow and analysis time is increased

Engineering Contradiction:
Improvedata transmission speedVSAvoidanalysis time
Core Design Contradiction:
SpeedVSLoss of time

Solution Approach 1:

The system dynamically selects between DNP and FTP protocols based on the type of data being transmitted. For abnormal waveform data requiring rapid analysis, FTP is selected to achieve faster transmission speeds, while DNP is used for常规 monitoring data

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the transmission protocol parameter from a fixed DNP protocol to a variable protocol selection mechanism that can switch between DNP and FTP based on data characteristics and transmission requirements, thereby optimizing transmission speed for different scenarios

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the DNP protocol is used for transmitting large-capacity waveform data, then the system maintains protocol simplicity, but the transmission efficiency decreases and fault response time increases

Engineering Contradiction:
Improvefault response efficiencyVSAvoiddata transmission time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system implements dynamic protocol selection where FTP is activated specifically for large-capacity abnormal waveform data transmission to improve productivity and reduce transmission time, while maintaining DNP for other monitoring functions

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The Front End Processor acts as an intermediary that receives data from RTUs and selectively applies different transmission protocols (DNP or FTP) based on the data type and transmission requirements, thereby optimizing overall system productivity

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9885744B2System and method for detecting an abnormal waveform in a power distribution system
Publication Date: 2018.02.06 KOREA ELECTRIC POWER CORP
  • US9885744B2 patent drawing
  • US9885744B2 patent drawing
  • US9885744B2 patent drawing

AI summary

The present invention relates to a system and method for an abnormal waveform in a power distribution system that quickly transmits abnormal waveform-related data of a large size by changing a protocol according to data size. The system for detecting an abnormal power quality waveform comprises: a plurality of RTUs for measuring abnormal waveform when a waveform measuring signal received, and transmitting an abnormal waveform using a protocol set according to the size of the abnormal waveform; an FEP for transmitting the waveform measuring signal to an RTU installed in a failure section, and receiving and storing the abnormal waveform from the RTU; a main server for transmitting the waveform measuring signal through the FEP to the RTU installed in the failure section, performing controlling to measure the abnormal waveform generated in the failure section, and receiving and displaying the abnormal waveform according to the waveform measuring signal.