Combined Measuring System Frequency Splitter Partial Discharge
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Solution Overview
Problem
Existing systems lack a combined solution for measuring and detecting current and voltage, along with continuous or one-time monitoring of partial discharges in medium voltage switchgears, due to space and cost constraints, and existing solutions do not integrate these functions effectively.
Innovation Solution
A combined measuring and detection system comprising an electronic evaluation unit that analyzes a broad frequency spectrum, connected to measuring devices for magnetic, electric fields, current, and voltage, with a frequency splitter to separate low frequency components for measurement and protection analysis and high frequency components for partial discharge detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate devices are used for current/voltage measurement and partial discharge monitoring, then measurement precision and detection capability are improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines current measurement, voltage measurement, and partial discharge monitoring functions into a single integrated measuring device. The device includes multiple sensing elements (current transformer, voltage transformer, partial discharge sensor) and a central evaluation unit that processes all measurements, eliminating the need for separate devices while maintaining measurement precision.
Solution Approach 2:
The measuring device is designed as a universal system capable of performing multiple functions: current measurement via current transformer, voltage measurement via voltage transformer, and partial discharge monitoring via dedicated sensor. The evaluation unit universally processes signals from all sensing elements, allowing one device to replace multiple specialized instruments.
2Adaptability or versatility
If multiple separate measuring and detection devices are installed, then comprehensive monitoring capability is improved, but installation space and cost increase
Solution Approach 1:
The patent integrates current measurement, voltage measurement, and partial discharge monitoring into a single compact device that can be installed in medium voltage switchgears. The unified design reduces the total installation space required compared to multiple separate devices while maintaining comprehensive monitoring capability across all parameters.
3Measurement precision
If separate evaluation devices are used for different measurements, then analysis accuracy is improved, but system complexity and cabling requirements increase
Solution Approach 1:
The evaluation unit is designed as a universal processing system that handles signals from current transformers, voltage transformers, and partial discharge sensors. It includes frequency splitters that separate low frequency components (for current/voltage analysis) from high frequency components (for partial discharge detection), providing accurate analysis for all measurement types within a single device.
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 solution reduces the number of devices and cabling needed, allowing for efficient measurement, detection, and evaluation of current and voltage, as well as partial discharges, by processing signals in different frequency groups, thereby simplifying the monitoring process and reducing complexity.
Implementation Method 1
the electronic evaluation unit is provided with at least one frequency splitter dividing measured quantities into a low frequency component for a measurement and protection analysis and into a high frequency component for detection of partial discharges
Data Source
AI summary
A combined measuring and detection system is disclosed which includes an electronic evaluation unit for analyzing a broad frequency spectrum of measured quantities and one or more measuring devices for measurement of one or more of a magnetic field, an electric field, a current, and a voltage. The measuring devices are operatively connected to the electronic evaluation unit, which is provided with at least one frequency splitter dividing the measured quantities into a low frequency component and into a high frequency component. Low frequency components are used for measurement and protection analysis and high frequency components are used to detect partial discharges activity.