Composite Fault Map for Distribution Line Transient Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrical power distribution systems face challenges in accurately locating line faults due to varying estimates from different monitoring devices, leading to extensive physical inspections and inefficiencies in identifying and repairing faults.
Innovation Solution
An automated process that receives and analyzes event reports from multiple monitoring systems to identify associated events, combining probability distributions to create a composite fault map, thereby refining the estimated location of line faults and reducing the inspection area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple monitoring devices provide different location estimates, then the reliability of fault detection is improved, but the measurement precision of fault location deteriorates
Solution Approach 1:
The patent combines probability distributions from multiple monitoring devices to create a composite fault map. This merging process integrates the reliability benefits of multiple devices while resolving the location precision deterioration by synthesizing their estimates into a unified probability distribution that identifies the most likely fault location.
Solution Approach 2:
The system uses feedback from multiple monitoring devices to continuously refine the fault location estimate. By analyzing the probability distributions from different devices and comparing them against the composite fault map, the system can iteratively improve location precision while maintaining the reliability benefits of multi-device monitoring.
2Reliability
If physical inspection is performed over the entire conductor portion, then the reliability of fault location identification is improved, but the loss of time and resources increases
Solution Approach 1:
The system performs preliminary analysis by creating a composite fault map that identifies the most likely fault location before physical inspection begins. This preliminary action uses probability distributions from multiple monitoring devices to narrow down the inspection area, ensuring that field personnel can quickly verify the most probable location rather than searching the entire conductor portion.
Solution Approach 2:
The patent segments the conductor into portions with different fault probabilities based on the composite fault map. Instead of inspecting the entire conductor uniformly, the system divides it into high-probability and low-probability segments, directing inspection efforts to the most likely fault locations first, thereby reducing overall inspection time while maintaining reliability.
3Adaptability or versatility
If different processing methods are used to analyze current measurements, then the adaptability of the system is improved, but the device complexity increases
Solution Approach 1:
The patent implements a universal processing framework that can handle multiple types of monitoring devices and measurement methods through a common probability distribution synthesis approach. This multi-functional system accepts inputs from various monitoring devices and applies consistent processing logic, providing adaptability without requiring separate complex processing paths for each device type.
Data Source
AI summary
A system and method for locating a fault in an electrical distribution system. A transient current waveform description associated with a line fault in an electrical distribution line is received. A time duration of the transient current waveform is determined based on the electrical current verses time waveform. An estimation that the line fault is likely to have occurred on one of the feeder line or the at least one lateral line is made based on a comparison of the time duration of the transient current waveform to a first threshold. An indication, based on the estimation, that the likely line fault likely occurred on one of the feeder line or the at least one lateral line is provided.