Partial Discharge Location Estimation with PTP Synchronization

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Solution Overview

Problem

Existing systems for determining the location of partial discharge in electric power facilities lack precise time synchronization, making it difficult to accurately identify the location of partial discharges within power facilities, which can lead to safety issues and inefficiencies in online diagnosis.

Innovation Solution

A system utilizing precision time-synchronization protocol (PTP) for network-based time synchronization among data acquisition apparatuses to collect and process sensing data, enabling accurate identification of partial discharge location through PRPD data analysis and machine learning algorithms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If field experts use measuring equipment to directly measure partial discharge from various points on the insulator, then the location determination is possible, but safety issues arise and there are economic and physical limits to the measuring equipment installation

Engineering Contradiction:

Improvepartial discharge location determinationVSAvoidsafety issues and economic/physical limits

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent uses sensors to create electrical copies of the partial discharge signals from multiple locations simultaneously, eliminating the need for field experts to physically access high-voltage areas. The sensors are installed at predetermined positions and capture discharge characteristics through electrical fields, providing safe remote measurement.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces mechanical measurement methods with electrical field-based sensing. Instead of physical contact or proximity measurements by field experts, the system uses sensors that detect partial discharges through electrical field interactions, enabling non-contact measurement and eliminating safety hazards.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Extent of automation

If online diagnosis system is implemented without precise time synchronization, then partial discharge detection is possible, but accurate location identification within the power facility is difficult

Engineering Contradiction:

Improveonline diagnosis capabilityVSAvoidlocation identification accuracy

Core Design Contradiction:

Extent of automationVSMeasurement precision

Solution Approach 1:

The patent implements a time synchronization mechanism that continuously adjusts the timing references of multiple sensors based on feedback signals. This ensures that all sensors operate with precise time coordination, allowing accurate determination of which sensor detected the partial discharge first, which is critical for location identification.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary time synchronization before partial discharge detection begins. By establishing precise time references in advance through synchronization signals, the system ensures that subsequent partial discharge measurements can be accurately timed and attributed to specific locations without needing complex real-time calculations.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If multiple measuring equipment is installed without precise time synchronization, then partial discharge detection is possible, but it is difficult to determine the local location of partial discharge

Engineering Contradiction:

Improvepartial discharge detection capabilityVSAvoidlocation information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The time synchronization system continuously monitors and adjusts timing information from multiple sensors through feedback mechanisms. This ensures that precise temporal information is maintained across all sensors, preserving the critical data needed to determine which sensor detected the partial discharge first, thereby preventing location information loss.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent divides the measurement system into multiple independent sensor units, each equipped with its own time synchronization mechanism. This segmentation allows each sensor to operate independently while maintaining precise time coordination through synchronization signals, enabling accurate location determination by comparing the timing information from segmented measurement points.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250271485A1System for estimating partial discharge occurrence location based on precision time-synchronization protocol (PTP)

Publication Date: 2025.08.28 LS ELECTRIC CO LTD

AI summary

A system for estimating a partial discharge occurrence location, according to an embodiment of the present disclosure, comprises: a plurality of data acquisition apparatuses that are installed in one area of a measurement target, and simultaneously acquire sensing data via time synchronization using a precision time-synchronization protocol (PTP); and a determination apparatus that determines a partial discharge occurrence location of the measurement target by using a plurality of pieces of sensing data received from the plurality of data acquisition apparatuses.