Grid Fault Identification via Current Pattern Analysis
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Solution Overview
Problem
Existing electric power distribution grid protection devices struggle to differentiate between transitional operating conditions and faults, leading to unnecessary network disconnections, especially when dealing with high current loads like electric rotating machines, which increases operational costs and requires time-consuming and expensive configuration procedures.
Innovation Solution
A method that acquires and processes current and voltage data to identify anomalous variations in grid current, distinguishing between transitional operating periods and faults by using statistical calculations and threshold comparisons, and 'cleans' data to determine if variations are due to start-up phases or actual faults, allowing for precise control strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sophisticated configuration procedures are used to tune protection parameters, then protection accuracy is improved, but implementation time and cost increase
Solution Approach 1:
The protection device automatically identifies electric loads and determines their operational characteristics without requiring manual configuration. The system self-configures by monitoring current patterns, identifying load types, and autonomously setting appropriate protection parameters. This eliminates time-consuming manual tuning and extensive testing while achieving accurate protection settings.
Solution Approach 2:
The system performs automatic load identification and parameter configuration during the initial commissioning phase, preparing the protection device for optimal operation before actual use. This preliminary automatic configuration eliminates the need for subsequent manual adjustments and extensive field testing.
Data Source
AI summary
A method for identifying a fault event in an electric power distribution grid sector including one or more electric loads and having a coupling node with a main grid, at which a grid current adsorbed by said electric loads is detectable. The method allows determining whether a detected anomalous variation of the grid current, adsorbed at the electric coupling node, is due to the start of a characteristic transitional operating period of an electric load or is due to an electric fault.