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| 摘要: |
| 阐述了某电厂由于谐振造成联络线路断路器跳闸后，发电机单机带厂用电重负荷运行情况下．出现厂用变压器跳闸、备用变压器短路及发电机被烧毁等一系列故障。从理论上分析了谐振导致局部过电压、过电流及发电机单机强励后造成机端电压升高的问题。讨论了单机运行的发电机在出力较小时，突然带上几倍的重负荷而造成独立系统瓦解过程；提出了避免类似故障的措施。 |
| 关键词: 热电厂 复故障 分析与处理 系统谐波 |
| DOI： |
| 分类号:TM621 TM732 |
| 基金项目: |
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| Analysis of multi-fault caused by syntony in power plant |
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SU Wen-bo TONG Ming-guang
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| Abstract: |
| After the trip of the tie line breaker caused by syntony,a series of faults ocurred in a power plant under the operating condition of single generator with heavy plant loads,such as auxiliary transformer tripping, standby transformer short-circuit and generator burnout and so on.The generator terminal voltage rising caused by the local over-voltage,over-current and single-ge-nerator compelling excitation during system syntony is theoretically analyzed. The collapse progress of single generator system is discussed,which is operating with a small output and exerted a heavy load suddenly,and the measures to avoid similar faults are suggested. |
| Key words: thermal power plant,multi-fault,analysis and processing,system syntony, |
