Partial Discharge Localization Using Traveling Sensor and Predetermined Mapping
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Solution Overview
Problem
Existing systems for detecting partial discharges in electrical apparatus face challenges such as high computational demands, high costs, and difficulties in accurately distinguishing between actual discharges and external disturbances, with existing methods requiring synchronized signals from multiple sensors.
Innovation Solution
The method involves using a system with directional sensing devices that provide adaptive directional sensitivity, employing a predetermined mapping to process signals from multiple sensors, and applying time delays to synchronize signals, allowing for more reliable localization of discharges with reduced computational and operational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors with triangulation techniques are used to localize partial discharge sources, then measurement precision is improved, but device complexity and computational demands increase
Solution Approach 1:
The patent extracts the localization function from complex multi-sensor triangulation systems and implements it through a single traveling sensor that sequentially visits predetermined positions. This removes the need for multiple simultaneous sensors and complex real-time signal processing, achieving simplified device architecture while maintaining localization capability
Solution Approach 2:
The patent pre-determines the positions where the sensor will travel and pre-calculates the localization methodology based on these positions. This preliminary setup allows the system to use simple signal presence/absence detection at each position rather than complex real-time triangulation, reducing computational demands during operation
2Measurement precision
If multiple sensors and triangulation computations are used, then localization accuracy is improved, but cost of implementation, calibration, and maintenance increases
Solution Approach 1:
The invention extracts the essential localization function from expensive multi-sensor triangulation systems and implements it using a single traveling sensor with predetermined position visits. This dramatically reduces hardware costs, simplifies calibration requirements, and lowers maintenance burden while preserving the ability to identify discharge locations
Solution Approach 2:
The patent employs a single sensor that travels to predetermined positions rather than using multiple expensive sensors simultaneously. This approach uses a simpler, more cost-effective sensor implementation that can be less sophisticated since it operates sequentially at pre-determined locations rather than requiring complex real-time multi-sensor coordination
3Measurement precision
If high-speed signal acquisition is used to resolve location within 30 cm, then measurement precision is improved, but use of energy and computational speed requirements increase
Solution Approach 1:
The patent pre-determines the sensor positions and the methodology for localization before operation. By knowing in advance where the sensor will travel and what to measure at each position, the system can use simple signal detection and comparison rather than high-speed continuous acquisition and complex real-time processing, reducing energy consumption
Solution Approach 2:
The sensor travels periodically to predetermined positions rather than continuously monitoring all spaces. This periodic sampling approach reduces the data acquisition rate and processing requirements compared to continuous high-speed monitoring, while still achieving adequate location resolution through strategic position selection
4Ease of operation
If directional sensing devices with predetermined mapping are used, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The system pre-establishes a mapping between sensor positions and spatial areas before operation. This predetermined mapping allows the operator to simply interpret which predetermined area a discharge occurs in based on sensor detections, without needing to perform complex real-time spatial analysis, thereby improving ease of operation
Solution Approach 2:
The patent divides the monitoring space into predetermined areas associated with specific sensor positions. This segmentation allows the complex three-dimensional localization problem to be broken down into simpler discrete position checks, making the system easier to operate while the predetermined mapping handles the coordination complexity
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
This approach enables accurate and efficient detection of partial discharges with improved resistance to external disturbances, reducing downtime and maintenance costs by effectively localizing the origin of discharges in electrical apparatus.
Implementation Method 1
detection systems that detect electromagnetic or acoustic emissions from them
Implementation Method 2
detection systems that detect electromagnetic or acoustic emissions from them
Data Source
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Figure 2
Figure 3~4
AI summary
The present disclosure provides methods and apparatus for determining the presence of an electrical discharge in at least one predetermined spatial area in an electrical apparatus. According to one aspect, the method includes providing at least one sensing device configured for sensing the electrical discharge, such that the at least one sensing device is sensitive to one or more of the at least one predetermined spatial area, providing a predetermined mapping comprising data corresponding to a position, and optionally an orientation, of the at least one sensing device and a position of the at least one predetermined spatial area, sensing at least one signal using the at least one sensing device, and processing the at least one signal based on the predetermined mapping to determine the presence of the electrical discharge in at least one predetermined spatial area. According to another aspect, a detection system for detecting an electrical discharge in an electrical apparatus is provided, the system including at least one sensing device configured for sensing the electrical discharge, and a signal processing device configured for performing the method according to the above aspect.