陈朝晖,李中玉
CHEN Zhao-hui1,LI Zhong-yu2(1.Taizhou Power Plant

• 1:台州发电厂
• 2:浙能中煤舟山煤电有限责任公司

摘要(Abstract)：

火力发电厂已广泛采用变频技术来实现设备的节能降耗,但变频装置的应用对传统电动机保护装置及保护配置带来很大的影响。介绍了两种运行模式下能自适应的新型电动机保护装置原理,提出了同时满足电动机在工频与变频工况下的保护配置方案,并成功应用于脱硫增压风机中,取得良好的运行效果。
Variable-frequency technology is widely used for saving energy in power plant.However,the application of converter brings great impact on traditional motor protection and protection configuration.The paper introduces variable-frequency operating condition as well as principles of self-adaptive new motor protection in both modes and proposes a protection configuration scheme that can meet both motors in power frequency,which are successfully used in flw gas desulphurization booster fan and achieves good effect.

关键词(KeyWords)： 变频器;高压电动机;继电保护;电流互感器
frequency-converter;high voltage motor;relaying protection;current transformer

Abstract:

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基金项目(Foundation):

作者(Author): 陈朝晖,李中玉
CHEN Zhao-hui1,LI Zhong-yu2(1.Taizhou Power Plant

DOI: 10.19585/j.zjdl.2013.01.015

参考文献(References)：

• GB/T 14285-2006继电保护和安全自动技术规程[S].北京:中国电力出版社,2006.
• 王维俭.电气主设备继电保护原理和应用[M].北京:中国电力出版社,1996.