Partial Discharge Detection via T/Q Pulse Synchronization

Solution Overview

Problem

Conventional partial discharge detection technologies face challenges in accurately distinguishing between partial discharge signals and noise, particularly in broadband applications, due to overlapping frequency bands and similar signal characteristics, leading to signal attenuation and incorrect noise identification.

Innovation Solution

A broadband lossless partial discharge detection and noise removal device that utilizes a T/Q pulse type noise removal circuit configuration, employing PANA technology to synchronize timing and magnitude pulses, allowing for effective noise suppression and partial discharge signal extraction without the need for filters or high-speed software processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If filters are used to remove noise, then noise removal capability is improved, but signal attenuation occurs and device complexity increases

Engineering Contradiction:

Improvenoise removal capabilityVSAvoidsignal attenuation

Core Design Contradiction:

Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The patent segments the partial discharge signal into two distinct pulse components: the T-pulse (timing pulse) representing discharge occurrence timing and the Q-pulse (magnitude pulse) representing discharge magnitude. By separating and independently processing these two pulse types, the system can identify genuine partial discharge events (where both pulses are present and synchronized) while filtering out noise (where only one pulse type or unsynchronized pulses occur), achieving effective noise removal without attenuating the actual partial discharge signal

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the detection parameter from traditional single-pulse amplitude/frequency analysis to dual-pulse synchronization detection. By monitoring the temporal correlation and synchronization between T-pulses and Q-pulses, the system transforms the noise discrimination problem into a timing relationship verification problem, enabling accurate distinction between partial discharge signals and noise without requiring filter-based frequency selection that causes signal attenuation

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If filters are used to remove noise, then noise removal capability is improved, but device complexity increases due to multiple filters

Engineering Contradiction:

Improvenoise removal capabilityVSAvoiddevice complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent segments the partial discharge signal into two distinct pulse components: the T-pulse (timing pulse) representing discharge occurrence timing and the Q-pulse (magnitude pulse) representing discharge magnitude. By separating and independently processing these two pulse types, the system can identify genuine partial discharge events (where both pulses are present and synchronized) while filtering out noise (where only one pulse type or unsynchronized pulses occur), achieving effective noise removal without attenuating the actual partial discharge signal

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the detection parameter from traditional single-pulse amplitude/frequency analysis to dual-pulse synchronization detection. By monitoring the temporal correlation and synchronization between T-pulses and Q-pulses, the system transforms the noise discrimination problem into a timing relationship verification problem, enabling accurate distinction between partial discharge signals and noise without requiring filter-based frequency selection that causes signal attenuation

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If high-speed software processing is used to distinguish signals from noise, then measurement precision is improved, but device complexity and processing time increase

Engineering Contradiction:

Improvesignal discrimination accuracyVSAvoidprocessing complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex high-speed software processing algorithms with a simpler hardware-based pulse synchronization detection mechanism. By using dedicated pulse detection circuits to identify and correlate T-pulses and Q-pulses in real-time, the system achieves accurate signal discrimination through deterministic hardware logic rather than computationally intensive software algorithms, reducing both device complexity and processing time while maintaining high measurement precision

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12130316B2Broadband lossless partial discharge detection and noise removal device

Publication Date: 2024.10.29 ADEIA EMERGING TECHNOLOGIES INC

AI summary

There is provided a broadband lossless partial discharge detection and noise removal device which includes: a partial discharge occurrence timing pulse acquiring unit acquiring a generated timing pulse of a partial discharge signal at the beginning of generation of a partial discharge signal; a partial discharge magnitude pulse acquiring unit acquiring a magnitude pulse of the partial discharge signal; a synchronization comparing unit detecting a partial discharge digital signal determined according to whether the generated timing pulse of the partial discharge signal and the magnitude pulse are synchronized; and a partial discharge signal generating unit detecting a partial discharge pulse obtained by converting the detected partial discharge digital signal into an analog signal.