Load Testing Breaker Layout to Prevent Erroneous Power Supply
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Solution Overview
Problem
Safety in conducting load tests on test target power supplies is not adequately secured.
Innovation Solution
A load testing system with multiple sets of load testing devices, each including resistance units and breaker devices, where power supply to resistance units is managed through separate breaker sections and devices, reducing the risk of erroneous power supply even in case of failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single breaker device is used to control power supply to resistance units, then the device complexity is reduced, but the reliability is insufficient because a failure in the breaker device can cause erroneous power supply
Solution Approach 1:
The patent divides the power supply control into multiple independent breaker devices, with each breaker device controlling power to specific resistance units. This segmentation ensures that a failure in one breaker device cannot affect the entire power supply system, thereby improving reliability while maintaining manageable complexity through modular design
Solution Approach 2:
The patent incorporates multiple breaker devices as a preventive measure against potential failures. By having redundant breaker devices in place before any failure occurs, the system is cushioned against the risk of erroneous power supply, ensuring safe operation even if one breaker device fails
2Ease of operation
If voltage step-down transformers are used for load testing, then the power supply can be controlled, but the setup becomes more complex and differs from actual use conditions
Solution Approach 1:
The patent extracts and removes the voltage step-down transformer from the load testing system. Instead of using transformers to control voltage, the system directly uses breaker devices to control power supply to resistance units, simplifying the setup and making it more similar to actual use conditions while maintaining operational ease
Solution Approach 2:
The patent creates a simplified model of the power supply system that copies the essential control function without the complex transformer components. By using breaker devices to directly control power to resistance units, the system replicates the key operational aspect of voltage control while eliminating the unnecessary complexity of transformers
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 safe and reliable load testing on high-voltage power supplies without voltage step-down transformers, allowing for a setup similar to actual use and reducing the impact of breaker failures.
Implementation Method 1
one or more resistance units... Power supply from the test target power supply to at least one resistance unit
Data Source
AI summary
A load testing system includes a plurality of sets of load testing devices each including a first load testing section including one or more resistance units and a first breaker device. Power supply from a test target power supply to at least one resistance unit among the one or more resistance units is performed at least via a breaker section separate from the load testing device, and the first breaker device. The breaker section performs on-off control on power supply to at least one load testing device among the plurality of sets of load testing devices. The first breaker device performs on-off control on power supply to at least a resistance unit connected to the first breaker device among the one or more resistance units.