Partial Discharge Monitoring via Zero-Cross Sampling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional partial discharge monitoring systems for gas-insulated apparatuses face network load issues due to continuous data transmission, which can lead to communication troubles and increased risk of dielectric breakdown and accidents if not addressed promptly.
Innovation Solution
A partial discharge monitoring system that employs electromagnetic wave detection sensors, converting devices, and an interface device to sample and integrate digital data, using zero cross timing of the main circuit voltage to optimize sampling and reduce network load, allowing for efficient data transmission and real-time monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If partial discharge signals are constantly transmitted to the network, then real-time monitoring capability is improved, but network load increases causing communication troubles
Solution Approach 1:
The patent implements periodic sampling of partial discharge signals synchronized with the zero-crossing points of the main circuit voltage. Instead of continuous transmission, the system samples and transmits data at specific periodic intervals (at zero-crossing moments), reducing network load while maintaining effective monitoring capability for detecting partial discharge events.
2Loss of energy
If sampling is performed at zero cross timing, then network load is reduced, but measurement precision may be affected
Solution Approach 1:
The patent uses the zero-crossing timing of the main circuit voltage as an intermediary reference signal to synchronize the sampling of partial discharge signals. This intermediary timing reference enables coordinated sampling that reduces data transmission volume while preserving the ability to accurately detect and analyze partial discharge events through phase-resolved analysis.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively detects and monitors partial discharges in gas-insulated apparatuses, reducing network load and enabling early detection of potential failures, thus preventing serious accidents while maintaining a scalable and cost-effective structure.
Implementation Method 1
electromagnetic wave detection sensors which detect electromagnetic waves in the insulating gas enclosures
Data Source
AI summary
A partial discharge monitoring system includes: electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored, converting devices, and an interface device. The interface device includes: a detecting part detecting a zero cross point of a voltage signal synchronous with a voltage signal applied to conductors disposed in the insulating gas enclosures, and deciding a sampling timing of signals of electromagnetic waves; a transmitting part notifying the sampling timing decided by the detecting part to the converting devices; an integrating part integrating digital data which are received from the converting devices on per converting device basis; and a transmitting part transmitting the integrated digital data to a monitoring device.