Remote Switching Assembly for Multi-Object Frequency Response Testing
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Solution Overview
Problem
Existing methods for measuring the frequency response of electrical assets, such as transformers, are inefficient and pose safety hazards due to the need for manual reconnection of test leads, which can lead to incorrect connections and increased risk.
Innovation Solution
A method and assembly that allows for remote disconnection of test leads using mechanical relays and interconnection devices, enabling simultaneous connection of multiple test objects and automated switching without physical reconnection, thereby ensuring safe and efficient measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual reconnection of test leads is used for each phase measurement, then measurement capability is achieved, but safety risk and operator hazard increase significantly
Solution Approach 1:
The patent introduces an intermediary switching mechanism located at a remote position that automatically connects and disconnects test leads from the testing unit. This mediator device eliminates the need for operators to manually handle test leads near high-voltage equipment, thereby resolving the contradiction between achieving measurement capability and ensuring operator safety.
Solution Approach 2:
The patent replaces the manual mechanical operation of connecting and disconnecting test leads with an automated switching system controlled by electrical signals. The mechanical relay or switch mechanism is actuated remotely through electrical control, substituting the hazardous manual mechanical operation with an automated system that maintains measurement capability while eliminating safety risks.
2Measurement precision
If test leads are reconnected multiple times for different phases, then individual phase measurement is achieved, but measurement time and productivity decrease
Solution Approach 1:
The patent implements preliminary action by pre-connecting all test leads to their respective phases before the measurement process begins. The switching mechanism is pre-configured to automatically select and connect the appropriate phase to the testing unit based on measurement requirements. This eliminates the need for repeated manual reconnections during the measurement process, thereby maintaining measurement precision while significantly improving productivity.
Solution Approach 2:
The patent introduces dynamic switching capability that allows the measurement system to automatically transition between different phases without physical reconnection. The switching mechanism dynamically redirects test leads to the required phase based on control signals, enabling rapid phase-by-phase measurement while maintaining measurement precision and eliminating time-consuming manual reoperations.
3Adaptability or versatility
If test leads are manually connected and disconnected, then adaptability to different measurement configurations is achieved, but risk of incorrect connection or grounding increases
Solution Approach 1:
The patent implements a universal switching mechanism that can handle multiple measurement configurations through a single automated system. The switching device is designed to accommodate different phase combinations and measurement scenarios without requiring manual reconfiguration. This multi-functional switching system maintains adaptability to various measurement needs while ensuring consistent, accurate connections through automated control, thereby eliminating the risk of incorrect manual connection or grounding.
Data Source
AI summary
A method of measuring the frequency response of a plurality of electrical objects to be measured comprises connecting a first mechanical connecting device of a plurality of mechanical connecting devices to a first electrical object to be measured, connecting a second mechanical connecting device to a second electrical object to be measured, and connecting a third mechanical connecting device to a third electrical object to be measured. The mechanical connecting devices are then connected to a testing unit. By remotely and electrically disconnecting selected mechanical connecting devices from the testing unit at a distance from the testing unit and measuring the frequency response of the electrical objects to be measured for which the mechanical connecting device is not electrically disconnected, disturbances in the measurement results from test objects different from the ones currently tested are avoided. A sense unit and an assembly for measuring the frequency response of a plurality of electrical objects are also provided.