| 超导限流器对电力系统继电保护和暂态稳定的影响 |
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| 引用本文： | 夏毅,刘建明.超导限流器对电力系统继电保护和暂态稳定的影响[J].电工电能新技术,2007,26(2):45-48,58. |
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| 作者姓名： | 夏毅 刘建明 |
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| 作者单位： | 1. 中国电力科学研究院,北京,100085
2. 国电信息中心,北京,100761 |
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| 摘 要： | 电力系统的高速发展导致了系统短路电流水平急剧增加,超导限流器SFCL(Superconducting Fault Current Limiter)是目前最理想的限流装置.本文详细介绍了含有超导限流器的电力系统的功率特性,并利用等面积准则分析了系统暂态过程,在理论上解释了超导限流器对电力系统暂态稳定的影响;由于超导限流器在电力系统中应用会对继电保护产生影响,尤其是对于距离保护影响较为明显,本文后部分详细分析了超导限流器对距离保护的影响,提出了新的整定方法,最后通过仿真实例对新的方法进行了验证.
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| 关 键 词： | 超导限流器 电网 暂态稳定 继电保护 |
| 文章编号： | 1003-3076（2007）02-0045-04 |
| 收稿时间： | 2006-09-26 |
| 修稿时间： | 2006-09-26 |
Effect of superconducting fault current limiters on power system protection and transient stability |
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| XIA Yi,LIU Jian-ming.Effect of superconducting fault current limiters on power system protection and transient stability[J].Advanced Technology of Electrical Engineering and Energy,2007,26(2):45-48,58. |
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| Authors: | XIA Yi LIU Jian-ming |
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| Affiliation: | 1. China Electric Power Research Institute, Beijing 100085, China; 2. China Electric Power Information Center, Beijing 100761, China |
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| Abstract: | The fast development of power system leads to sharp increase of the short circuit current.Until now,Superconducting Fault Current Limiter(SFCL) is considered the best limiting equipment.The power characteristics of the system installed with SFCLs are presented in details and the transient process of power systems is analyzed by using the equal area criterion.The explanation for the mechanism of SFCL's influence on transient stability of power system is given.For the SFCL installed in the power system has impact on relaying protection,and the impact on the distance protection is especially distinct.The SFCl's influence on the distance protection is analyzed in detail in the second half part of this paper.A new setting method is proposed.Finally,the new method is tested using a simulation example. |
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| Keywords: | SFCLs power grid transient stability system protection |
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