Circuit Breaker Switch Monitoring via Single-Input Circuit Logic
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Solution Overview
Problem
High-voltage circuit breakers require multiple electrical inputs for monitoring systems, which is costly and inefficient, especially when monitoring multiple poles or sensors, as existing systems often have limited inputs.
Innovation Solution
A switching device that connects at least two switches in series or parallel circuits, allowing them to be monitored via a single input of the monitoring system, freeing up other inputs for sensors, with the ability to switch between series and parallel circuits using a relay or contactor to detect various states unambiguously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple electrical inputs are used to monitor each switch and sensor independently, then monitoring precision and reliability are improved, but system cost and complexity increase
Solution Approach 1:
The patent combines multiple switch monitoring functions into a single electrical input by connecting switches in series or parallel circuits. This merging approach maintains monitoring reliability through circuit logic while reducing system complexity and cost by requiring fewer input channels in the monitoring system.
Solution Approach 2:
The monitoring system is designed with multi-functionality to handle both individual switch monitoring and combined circuit monitoring through a single input. This universal approach allows the same input channel to monitor multiple switches depending on the circuit configuration, reducing the total number of inputs needed while maintaining comprehensive monitoring coverage.
2Reliability
If multiple electrical inputs are allocated for each switch and sensor, then monitoring completeness is improved, but cost increases
Solution Approach 1:
Multiple switch signals are merged into a single electrical input through series or parallel circuit connections. This combining strategy ensures complete monitoring of all switches while reducing the total number of input channels required, thereby lowering system cost without sacrificing monitoring completeness.
Solution Approach 2:
The patent changes the electrical circuit configuration parameter by switching between series and parallel connections based on monitoring requirements. This parameter change allows the same hardware input to adapt to different monitoring scenarios, reducing the need for additional inputs and associated costs while maintaining complete monitoring capability.
3Measurement precision
If separate monitoring systems are used for different poles, then monitoring accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The monitoring system is designed with universal multi-functionality to monitor multiple poles through a single integrated system. By using series or parallel circuit configurations, the system can accurately monitor the state of multiple poles simultaneously using one electrical input, eliminating the need for separate monitoring systems and reducing overall system footprint and complexity.
Solution Approach 2:
The patent transitions from monitoring multiple poles in separate one-dimensional channels to monitoring them simultaneously in a unified multi-dimensional circuit configuration. This dimensional change allows the system to capture the state of multiple poles through a single input channel, reducing system complexity while maintaining monitoring accuracy across all poles.
Data Source
AI summary
A switching device for a high-voltage circuit breaker includes at least two switches for ascertaining states of apparatuses of the switching device via a monitoring system. The at least two switches are connected together in series and/or in parallel and can be connected together to exactly one input of the monitoring system. A high-voltage circuit breaker includes the switching device and the monitoring system, which is and/or includes a data acquisition, data processing, data storage and/or data transmission unit, in particular with digital-analog and/or analog-digital converters. A method for operating the switching device provides the at least two switches connected in series and/or in parallel, and forwards the state of the apparatuses via an input, in particular via exactly one input of the monitoring system, in the form of electric variables, in particular a voltage.