Distribution Board Noise Detection for Abnormal Discharge Isolation
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Solution Overview
Problem
Existing distribution boards face challenges in detecting and isolating abnormal discharge phenomena due to complex frequency analysis and increased complexity and cost when implementing CR circuits for each branch breaker, as well as interference from high frequency noise affecting multiple branch breakers, making it difficult to pinpoint the source of the issue.
Innovation Solution
A distribution board design featuring noise detection sections for each branch breaker, a processor to analyze detection signals, and low-pass filters to prevent noise interference, allowing for simple processing to identify and isolate abnormal discharge sources without complex frequency analysis, thereby reducing costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequency analysis is performed to detect discharge phenomena, then detection accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent extracts only the high frequency noise component from the overall signal using a high-pass filter, rather than performing complete frequency analysis. This allows detection of discharge phenomena by isolating the relevant frequency band while avoiding the complexity of comprehensive spectral analysis.
Solution Approach 2:
The patent uses a simple high-pass filter circuit instead of complex frequency analysis equipment. This disposable-like simple component provides sufficient detection capability for high frequency noise without requiring expensive or complex processing systems.
2Measurement precision
If CR circuits are provided for each branch breaker to detect high frequency noise, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes the noise detection function universal by providing the same high-pass filter configuration for each branch breaker. This standardized approach allows each breaker to independently detect high frequency noise without requiring complex individualized circuits, reducing overall system complexity while maintaining detection capability.
Solution Approach 2:
The patent segments the noise detection function into identical modular high-pass filter units that can be independently applied to each branch breaker. This segmentation allows for simplified individual circuits that can be replicated, reducing the complexity of designing and implementing detection for each breaker separately.
3Measurement precision
If high frequency noise is detected without filtering, then detection sensitivity is improved, but false detection increases due to interference from multiple branch breakers
Solution Approach 1:
The patent applies local quality by using individual high-pass filters at each branch breaker to detect high frequency noise locally before it propagates to other breakers. This localized filtering maintains detection sensitivity while preventing interference from affecting other parts of the system, thereby improving reliability.
Solution Approach 2:
The patent converts the potentially harmful high frequency noise that could interfere with other breakers into a beneficial localized detection signal. By filtering and detecting the noise at its source before propagation, the harmful interference is transformed into useful diagnostic information about discharge phenomena at that specific location.
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 efficient detection and isolation of abnormal discharge sources with reduced processing complexity and cost, preventing unnecessary breaker tripping and improving safety by accurately identifying the source of high frequency noise.
Implementation Method 1
The CR circuit has a configuration in which a capacitor and a resistor are serially connected and is electrically connected between different electrodes of a circuit. Such a CR circuit passes noise components of not less than a predetermined frequency.
Data Source
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AI summary
The present invention provides a distribution board having a main breaker and a plurality of branch breakers, the distribution board being wired to branch power supplied to the main breaker into each branch breaker, the distribution board including: a plurality of noise detection sections configured to correspond to the respective branch breakers one-to-one and each configured to output a detection signal based on a noise component of not less than a predetermined frequency generated on a secondary side of each branch breaker; and one processor configured to separately receive the detection signal output from each noise detection section and determine whether the detection signal is high frequency noise at a threshold or more.