Optoelectronic Diagnostic Module for HV Gas-Insulated Systems
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Solution Overview
Problem
Current diagnostic systems for electrical high-voltage and medium-voltage systems struggle to detect both partial discharges and arcs effectively due to interference and limited sensitivity, often requiring complex setups and failing to predict faults until they lead to serious network failures.
Innovation Solution
A diagnostic module that operates in two modes, amplifying and evaluating light signals from partial discharges and arcs differently, using optoelectrical converters and amplifiers with adjustable voltages and signal paths to provide continuous monitoring and quick detection of maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electromagnetic signals are measured to detect partial discharges, then detection capability is provided, but measurement sensitivity is limited by electromagnetic interference and interpretation is difficult
Solution Approach 1:
The patent uses an optical intermediary (light signal detection) to detect partial discharges, converting the detection from electromagnetic domain to optical domain. This intermediary approach allows detection without direct electromagnetic signal measurement, thereby avoiding electromagnetic interference while maintaining detection sensitivity.
2Measurement precision
If optical detection is used to detect partial discharges, then high sensitivity is achieved, but the system cannot simultaneously detect arcs with different spectral components
Solution Approach 1:
The patent segments the optical detection into multiple wavelength channels, with different photodetectors tuned to detect specific spectral ranges. This allows simultaneous detection of partial discharges (UV range) and arcs (IR range) by dividing the detection task across multiple specialized sensors, achieving both high sensitivity and broad detection coverage.
Solution Approach 2:
The optical detection system is designed with multi-functionality to detect both partial discharges and arcs simultaneously. By incorporating multiple photodetectors with different spectral responses and using a unified control unit, the system achieves universal detection capability for different types of electrical discharges without requiring separate specialized systems.
3Device complexity
If monitoring is carried out at longer intervals, then system complexity is reduced, but faults cannot be detected in good time
Solution Approach 1:
The patent implements continuous monitoring of partial discharges and arcs through the optical detection system. The control unit continuously processes light signals from multiple photodetectors, enabling real-time fault detection without requiring periodic interruptions. This continuous operation maintains high reliability while the integrated design keeps system complexity manageable.
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 rapid and effective detection of both partial discharges and arcs within gas-insulated systems, reducing the risk of network failures by providing timely maintenance insights and improving fault prediction.
Implementation Method 1
at least one optoelectrical converter and amplifier unit (9, 9a, 9b) for optical detection of a light signal (LS) generated by electrical discharge phenomena
Implementation Method 2
optoelectrical converter and amplifier unit (9, 9a, 9b) for optical detection of a light signal (LS) generated by electrical discharge phenomena
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
The present invention relates to a system for diagnosing the technical operating state of an electrical high-voltage and medium-voltage system (2) which has at least one current-carrying inner conductor (4) in at least one gas-tight interior (2.1) of a housing (3), in which a diagnostic module (7) with at least one optoelectronic converter and amplifier unit (9) is provided for optical detection of a light signal (LS) generated by electrical discharge phenomena in the gas-tight interior of the housing.The essential aspect of the system according to the invention for diagnosing the technical operating state of an electrical high-voltage and medium-voltage system is that the diagnostic module (7) is designed for optical detection of partial discharges in a first operating mode and for optical detection of arcs in a second operating mode, wherein the light signal generated by the electrical discharge phenomena is amplified differently depending on the respective operating mode and evaluated differently by means of the at least one evaluation unit integrated in the diagnostic module for diagnosing the technical operating state.