Rupture Disc Antenna for Partial Discharge Detection in GIS
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Solution Overview
Problem
Existing gas-insulated switchgears (GIS) face challenges in efficiently detecting and localizing partial discharges (PD) due to the high cost and downtime associated with installing additional PD detectors, especially in areas without accessible mounting points or viewing windows.
Innovation Solution
A PD detection arrangement that utilizes a rupture disc (RD) unit as an antenna, connected to a monitoring device, allowing for improved PD detection capability at more locations within the GIS without requiring additional detector installations, leveraging the widespread presence of RD units in GIS compartments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional PD detectors are installed to improve PD detection capability, then measurement precision is improved, but device complexity and installation cost increase
Solution Approach 1:
The rupture disc unit is designed to serve dual functions: its primary function as a pressure relief device and its secondary function as an antenna for PD detection. By making the RD unit multi-functional, the patent eliminates the need for separate PD detectors, thereby improving PD detection capability without increasing device complexity or installation cost.
Solution Approach 2:
The rupture disc unit serves itself by acting as its own antenna for PD detection. The existing RD structure, already present in the GIS compartment, is utilized for PD signal reception without requiring external addition of dedicated detection components, thus improving measurement precision while avoiding increased device complexity.
2Measurement precision
If PD detectors are installed in inaccessible locations, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The rupture disc unit is designed to serve dual functions: its primary function as a pressure relief device and its secondary function as an antenna for PD detection. By making the RD unit multi-functional, the patent eliminates the need for separate PD detectors, thereby improving PD detection capability without increasing device complexity or installation cost.
Solution Approach 2:
The rupture disc unit serves itself by acting as its own antenna for PD detection. The existing RD structure, already present in the GIS compartment, is utilized for PD signal reception without requiring external addition of dedicated detection components, thus improving measurement precision while avoiding increased device complexity.
3Reliability
If PD detectors are added to meet quality and safety standards, then reliability is improved, but loss of time increases
Solution Approach 1:
The rupture disc units are pre-installed in the GIS compartments as standard safety components. By designing these pre-existing RD units to also function as PD detection antennas, the patent enables PD detection capability to be activated without requiring additional installation time, thus improving reliability for standards compliance while minimizing GIS downtime.
Solution Approach 2:
The rupture disc unit is designed to serve dual functions: its primary function as a pressure relief device and its secondary function as an antenna for PD detection. By making the RD unit multi-functional, the patent eliminates the need for separate PD detectors, thereby improving PD detection capability without increasing device complexity or installation cost.
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 cost-effective and rapid enhancement of PD detection and localization within GIS systems, reducing downtime and meeting quality and safety standards by repurposing existing RD units as internal PD detectors, thereby improving overall PD detection and localization capabilities.
Implementation Method 1
an antenna for receiving signals from the occurrence of PD, and a rupture disc (RD) unit comprising a RD arranged to rupture when a predetermined pressure differential across the RD is exceeded, the RD arranged to be electrically isolated from direct electrical contact with the GIS, and being connected to the monitoring device such that the RD acts as the antenna of the PD detector
Data Source
Figure 1A~1B
Figure 2
Figure 3~4
AI summary
The invention relates to a partial discharge (PD) detection arrangement for a gas-insulated switchgear (GIS), the arrangement (50) comprising a PD detector (40) comprising a monitoring device (49) and an antenna (41) for receiving signals from the occurrence of PD, and a rupture disc (RD) unit (30) comprising a RD (31) arranged to rupture when a predetermined pressure differential across the RD (31) is exceeded, the RD (31) arranged to be electrically isolated from direct electrical contact with the GIS, and being connected to the monitoring device such that the RD (31) acts as the antenna (41) of the PD detector (40). The invention also relates to a combined RD unit and antenna module (60).