中国电力2012，Vol.45Issue(12)：7-11,5.
1000MW汽轮机组轴瓦振动保护误动的原因分析及对策
Cause Analysis and Countermeasures of Malfunction of 1000-MW Turbine Pad Vibration Protection
张秋生 1范永胜 1史文韬 1胡晓花 1丁俊宏 2高爱民3
作者信息
- 1. 神华国华(北京)电力研究院有限公司,北京 100069
- 2. 浙江省电力试验研究院,浙江杭州310014
- 3. 江苏方天电力技术有限公司,江苏南京211102
- 折叠
摘要
Abstract
Focusing on the malfunction of 1 000-MW ultra-supercritical turbine bearing pad vibration protection in combination with the investigation into turbine bearing pad vibration protection of 29 1 000-MW turbines adopting Siemens technologies in 21 power plants, the mechanism of VM600 NOT OK signals and the causes for the malfunction are analyzed. Due to the high sensitivity of the probe, whenever there is nonstandard cable grounding, high induced voltage or improper installation of moving cables and probes, the NOT OK signals will be issued incorrectly. In addition, this signal in VM600 is extended to 10 seconds, which amplifies the influence of this mistake. By modifying the program of VM600, enhancing shielding and grounding to ensure the accuracy of the measurement, power plants using Siemens turbine technology can operate safely if they abide by the protection logic of the original design.关键词
超超临界机组/汽轮机轴瓦振动/保护误动/VM600Key words
ultra-supercritical unit/ turbine bearing pad vibration/ protection malfunction/ VM600分类
能源科技引用本文复制引用
张秋生,范永胜,史文韬,胡晓花,丁俊宏,高爱民..1000MW汽轮机组轴瓦振动保护误动的原因分析及对策[J].中国电力,2012,45(12):7-11,5.
