Generator Control Bus Status Verification
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Solution Overview
Problem
Current control systems for determining the status of an electric power bus are prone to incorrect sensing of a dead bus, leading to potential generator damage due to human error, wiring issues, and faulty voltage sensing circuits, which can result in unnecessary stress and shortened generator life.
Innovation Solution
A control system that uses additional detection techniques, such as testing load sharing lines to validate the bus status and communicating between generators to confirm the bus condition, preventing breaker closure until the bus is correctly determined to be dead and synchronized, thereby preventing generator damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voltage sensing circuit is used to determine bus status, then the control system can detect bus voltage, but the sensing may be incorrect due to open/shorted circuits, wiring issues, or human error
Solution Approach 1:
The patent introduces an intermediary communication system between generators that acts as a mediator to verify bus status. Instead of relying solely on the voltage sensing circuit, the system uses communication signals exchanged between generators to confirm whether the bus is truly dead before allowing breaker closure, thereby resolving the unreliability of voltage sensing alone
Solution Approach 2:
The patent implements a feedback mechanism where generators exchange status information through communication lines. Each generator reports its breaker status and receives feedback from others, creating a closed-loop verification system that confirms bus status before permitting closure, thus improving reliability over open-loop voltage sensing
2Productivity
If breaker closes to dead bus without proper verification, then generator can connect to bus, but generator damage occurs due to lack of synchronization
Solution Approach 1:
The patent applies preliminary action by requiring generators to exchange communication signals and verify bus status before the breaker closure action occurs. The system performs preliminary verification through inter-generator communication to confirm the bus is dead, ensuring synchronization conditions are met before permitting breaker closure, thus preventing damage
Solution Approach 2:
The patent implements preliminary anti-action by preventing breaker closure unless verification through communication confirms the bus is truly dead. The system anticipates the potential harm of unsynchronized closure and applies a counter-measure (communication verification) that blocks the harmful action before it can occur
3Reliability
If additional detection techniques are implemented, then bus status determination accuracy improves, but system complexity increases
Solution Approach 1:
The patent applies universality by making generators multi-functional: each generator serves both as a power source and as a communication node that verifies bus status. The existing generator control systems are enhanced with communication capabilities, allowing them to perform both generation and verification functions, thus improving reliability without requiring entirely separate verification equipment
Data Source
AI summary
A method for controlling power generation equipment, including bringing a generator online into a shared power bus environment, is described. The method includes determining whether the shared power bus is currently active, and whether a voltage determination fault is present with respect to a specific generator. Where the shared power bus is inactive and no fault is present, the generator is brought online in response to a load request. Where the shared power bus is active, the generator is synchronized with the shared power bus before the generator is brought online.