Updating Protection Device Operational Curves
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Solution Overview
Problem
Power systems face inefficiencies due to protection devices' changing performance characteristics over time, which can lead to suboptimal operation if not updated, affecting industrial processes by altering load configurations and trip conditions.
Innovation Solution
A method and apparatus that continuously determine and update the operational curves of protection devices based on actual trip information, adjusting settings and load configurations to reflect current performance characteristics, ensuring the power system operates effectively and efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power system operates based on the manufacturer's initial performance characteristics of the protection device, then the system can be configured initially, but the performance characteristics change over time leading to suboptimal operation
Solution Approach 1:
The system continuously monitors actual trip conditions of the protection device and feeds this information back to update the operational curve. This feedback mechanism ensures the performance characteristics remain accurate over time by comparing actual trip data with the stored operational curve and making necessary adjustments.
Solution Approach 2:
The system proactively updates the operational curve before significant performance degradation affects system operation. By continuously monitoring and updating the performance characteristics, the system prevents suboptimal operation rather than reacting to problems after they occur.
2Productivity
If the operational curve is updated based on actual trip information, then the power system operates more efficiently, but the complexity of the system increases
Solution Approach 1:
The protection device itself generates the trip information that updates its own performance characterization. The system uses its own operational data to self-update the operational curve, eliminating the need for external testing equipment or manual intervention, thereby reducing overall system complexity while maintaining high efficiency.
Solution Approach 2:
The system updates the operational curve by adjusting parameters based on actual trip conditions. Instead of complete re-characterization, only the necessary parameters are modified to reflect current performance, simplifying the update process while maintaining accuracy.
3Reliability
If the protection device trips based on outdated performance characteristics, then the device provides protection, but unnecessary trips occur reducing industrial process effectiveness
Solution Approach 1:
The operational curve is made dynamic and continuously updated based on actual trip conditions rather than remaining static at the manufacturer's initial specifications. This dynamic adjustment ensures the protection device adapts to its actual performance characteristics, preventing unnecessary trips while maintaining reliable protection.
Solution Approach 2:
The system uses feedback from actual trip conditions to continuously refine the operational curve, ensuring it accurately reflects the protection device's current performance. This prevents mismatches between the operational curve and actual device behavior that would cause unnecessary trips.
Data Source
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AI summary
Described herein are improvements for a power system by operating the power system using updated performance characteristics for a protection device. In one example, a method includes operating the power system based on a first operational curve for a first protection device of the one or more protection devices. The first operational curve indicates conditions upon which the first protection device will trip. The method also provides obtaining trip information describing conditions that cause the first protection device to trip at each of one or more trip occurrences during operation of the power system. The method further provides adjusting the first operational curve to generate an adjusted first operational curve that reflects the trip information and operating the power system based on the adjusted first operational curve.