Generator Set Circuit Breaker Synchronization Testing Before Grid Connection
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Solution Overview
Problem
The synchronization grid-connection of newly-built generator set outlet switch apparatus is often marred by issues such as poor device manufacturing, poor mounting quality, and inappropriate parameter setting, leading to potential burn-out of the generator and outlet switch apparatus due to non-synchronization closing.
Innovation Solution
A method and apparatus for synchronization test of a generator set outlet switch apparatus that includes determining the correctness of the wiring phase sequence, checking for synchronous three-phase closings, measuring and recording two-side voltage waveform data, and evaluating the synchronization closing performance using a simulated quality coefficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synchronization grid-connection is performed without prior verification, then the startup process is faster, but the generator and outlet switch apparatus may burn out due to non-synchronization closing
Solution Approach 1:
The patent implements preliminary verification actions before synchronization grid-connection, including checking wiring phase sequence correctness, verifying synchronous three-phase closings, and measuring voltage waveform data. These preliminary checks ensure synchronization closing reliability is confirmed before actual grid-connection occurs, preventing burnout while maintaining efficient startup through automated testing procedures.
2Reliability
If comprehensive synchronization testing is performed, then the synchronization closing performance is verified, but the testing time and complexity increase
Solution Approach 1:
The patent replaces complex manual testing procedures with automated electronic testing systems. The synchronization testing apparatus automatically checks wiring phase sequences, measures voltage waveform data, and evaluates synchronization closing performance through computerized analysis, significantly reducing testing time while maintaining comprehensive verification of synchronization closing performance.
3Manufacturing precision
If detailed parameter checking is performed, then the manufacturing and mounting quality is verified, but the testing complexity increases
Solution Approach 1:
The patent designs a universal testing apparatus that can perform multiple verification functions through integrated modules. The system checks wiring phase sequences, measures voltage waveforms, analyzes synchronization closing timing, and evaluates overall performance using a single multi-functional device, reducing testing complexity while maintaining comprehensive quality verification capabilities.
Data Source
AI summary
A method of synchronization test of a generator set outlet switch apparatus includes that: prior to a synchronization grid-connected closing of an outlet switch apparatus of a target generator set, a wiring phase sequence of a synchronization apparatus is determined to be correct; then three-phase closings of the outlet switch apparatus are determined to be synchronous; two-side voltage waveform data at a closing moment of the outlet switch apparatus is measured and recorded; and a simulated synchronization closing quality coefficient of the outlet switch apparatus of the target generator set is determined according to the two-side voltage waveform data, and a synchronization closing performance of the outlet switch apparatus of the target generator set is evaluated according to the simulated synchronization closing quality coefficient.