Capacitive Bushing for Partial Discharge Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems fail to provide a simple and integrated method for detecting and indicating partial discharges in electric power systems and equipment, leading to potential damage and costly repairs due to undetected issues.
Innovation Solution
A system incorporating a capacitive voltage tap and two circuits, one for measuring voltage and another for detecting partial discharges, integrated into electrical equipment, allowing for quick and simple visual or audible verification of partial discharges without requiring external devices, using a single screen and minimizing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex monitoring system with multiple external devices is used to detect partial discharges, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the partial discharge detection function with the existing voltage indication system by integrating a detection circuit into the bushing structure. The capacitive screen that already exists for voltage indication is utilized to also detect partial discharge signals, merging two functions into a single integrated system that reduces complexity while maintaining detection capability
Solution Approach 2:
The capacitive screen in the bushing is designed to serve multiple functions: it indicates voltage presence/absence and simultaneously detects partial discharge signals. This multi-functional approach eliminates the need for separate detection devices, reducing system complexity while improving reliability through early detection
2Measurement precision
If multiple screens are used in bushings for different voltage applications, then measurement accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges voltage indication and partial discharge detection functions into a single capacitive screen. The detection circuit processes signals from this unified screen structure, eliminating the need for multiple separate screens while maintaining measurement precision through sophisticated signal processing
Solution Approach 2:
The single capacitive screen is designed to perform multiple measurement functions simultaneously - indicating voltage presence and detecting partial discharge signals. This universal approach reduces bushing complexity while achieving accurate measurements through multi-functional signal processing
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
Enables early detection and prevention of partial discharges, reducing the risk of equipment damage and economic losses by providing a cost-effective and integrated solution for monitoring partial discharges within the electrical equipment.
Implementation Method 1
at least one capacitive voltage tap of the electrical equipment
Implementation Method 2
at least a second circuit for detecting partial discharges
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The present invention relates to a system for detecting and indicating partial discharges and voltage. The system of the present invention allows capturing signals from the electric power system and/or the electrical equipment thereof, and detecting and indicating the presence or absence of partial discharges and voltage, which allows carrying out a quick and simple inspection in order to prevent faults in the distribution elements, preventing risks and performing suitable installation maintenance.