| 变频调速系统中电动机继电保护整定计算研究 |
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| 引用本文： | 李健,覃昭安,仲浩,罗玉春. 变频调速系统中电动机继电保护整定计算研究[J]. 江苏电机工程, 2010, 29(4): 25-27 |
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| 作者姓名： | 李健 覃昭安 仲浩 罗玉春 |
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| 作者单位： | 1. 嘉兴电力局,浙江嘉兴,314033
2. 国电南瑞科技股份有限公司,江苏南京,210000 |
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| 摘 要： | 在分析系统变频运行对电动机主要影响的基础上，对电动机的启动超时保护、电流速断保护和低电压保护进行了整定计算；针对变频运行时电动机主保护缺失问题，提出采用采样值差动保护作为电动机主保护的解决方案。
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| 关 键 词： | 电动机保护 整定计算 高压变频器 |
Reseach on the Setting Calculation for Motor Relay Protection After Application of High-voltage Converters |
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| LI Jian,QIN Zhao-an,ZHONG Hao,LUO Yu-chun. Reseach on the Setting Calculation for Motor Relay Protection After Application of High-voltage Converters[J]. Jiangsu Electrical Engineering, 2010, 29(4): 25-27 |
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| Authors: | LI Jian QIN Zhao-an ZHONG Hao LUO Yu-chun |
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| Affiliation: | 1 .Jiaxing Electric Power Bureau, Jiaxing 314033, China; 2.NARI Technology Development Limited Company, Nanjing 210000, China) |
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| Abstract: | For the past few years the wide application of High-voltage converters in power plants has a significant impact on traditional motor relay protection. Setting calculation for motor protection such as instantaneous overcurrent protection and under-voltage protection are carried out based on analysis of motor parameters when the system works in frequency-conversion mode. In connection with the ploblem that traditional current phasor differential protection can＇t be used any more when motors work in Frequency-Conversion mode, sampled value differential protection principle is presented as the main protection. |
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| Keywords: | motor relay protection setting calculation high-voltage converter |
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