Switch Matrix Test Apparatus for Utility Power Devices

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Solution Overview

Problem

Existing utility power device testing methods are cumbersome and hazardous due to frequent lead changes and interruptions, exposing workers to high voltages and increasing the risk of accidents and fatigue, especially when performing tests in challenging outdoor environments with limited access.

Innovation Solution

A test apparatus with an integrated switch matrix that directly connects test cables to output ports, allowing for simultaneous measurement of high and low voltage signals without the need for frequent lead changes, thereby reducing exposure to hazardous conditions and improving workflow efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional testing methods with separate high voltage and low voltage test apparatus are used, then comprehensive testing coverage is achieved, but worker exposure to high voltage hazards increases and testing time is extended due to frequent lead changes

Engineering Contradiction:

Improvetesting coverageVSAvoidworker exposure to high voltage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines high voltage testing capabilities and low voltage testing capabilities into a single integrated test apparatus. The system includes a high voltage source connected through a switch matrix that can route high voltage signals to different terminals, while also incorporating low voltage measurement capabilities. This integration eliminates the need for workers to physically move between separate high voltage and low voltage test equipment, reducing exposure to high voltage hazards while maintaining comprehensive testing coverage.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The switch matrix acts as an intermediary component that safely manages the transition between high voltage and low voltage measurement modes. The switch matrix isolates the low voltage measurement circuitry from direct high voltage exposure while still enabling high voltage testing through controlled switching. This intermediary structure protects workers and sensitive measurement equipment from high voltage hazards.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple separate test apparatuses are used for high voltage and low voltage testing, then specialized testing capabilities are maintained, but device complexity and setup time increase

Engineering Contradiction:

Improvetesting capabilitiesVSAvoidnumber of apparatuses

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The test apparatus is designed with multi-functionality to perform both high voltage testing and low voltage measurement through a single integrated system. The switch matrix can be configured to route high voltage signals from the high voltage source to various terminals under test, while simultaneously enabling low voltage measurement capabilities through the same physical interface. This universal design reduces the number of separate apparatuses needed while maintaining specialized testing capabilities for both voltage ranges.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If frequent lead changes are performed during testing, then accurate measurements at different terminals are achieved, but productivity decreases and fatigue increases

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidtesting speed

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The switch matrix is pre-configured with multiple predetermined switching patterns that correspond to different testing scenarios. Before actual testing begins, the system can be programmed with the sequence of measurements to be performed, and the switch matrix automatically executes the predetermined switching patterns to connect the appropriate terminals. This preliminary configuration eliminates the need for manual lead changes during testing, maintaining measurement precision while significantly improving productivity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The switch matrix provides dynamic reconfiguration capability that allows the testing system to automatically adapt its connection topology during the testing process. Instead of static wired connections that require physical repositioning, the switch matrix can dynamically switch between different terminal connections under software control. This dynamic switching maintains accurate electrical connections for precise measurements while eliminating the time-consuming manual lead changes that reduce productivity.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9874613B2Method and system of apparatuses for testing utility power devices

Publication Date: 2018.01.23 DOBLE ENGINEERING CO

AI summary

Test measurements on a utility power device by a switch matrix apparatus and a common voltage source as separate devices is performed. Through the switch matrix apparatus, the common voltage source selectively sends a first high voltage signal via a first lead to a first terminal of the utility power device, measures a first corresponding signal returned via a second lead of the switch matrix apparatus from a second terminal of the utility power device. While the first lead and the second lead of the switch matrix apparatus remain electrically coupled to the first and the second terminal of the utility power device, a second high voltage signal is selectively sent via the second lead to the second terminal of the utility power device, and a second corresponding signal returned from the first terminal of the utility power device via the first lead of the switch matrix apparatus is measured.