| 基于导纳特性的水轮发电机失磁保护新判据 |
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| 引用本文： | 沈全荣,陈佳胜,陈俊,郭自刚,王光.基于导纳特性的水轮发电机失磁保护新判据[J].电力自动化设备,2017,37(7). |
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| 作者姓名： | 沈全荣 陈佳胜 陈俊 郭自刚 王光 |
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| 作者单位： | 南京南瑞继保电气有限公司，江苏 南京 211102,南京南瑞继保电气有限公司，江苏 南京 211102,南京南瑞继保电气有限公司，江苏 南京 211102,南京南瑞继保电气有限公司，江苏 南京 211102,南京南瑞继保电气有限公司，江苏 南京 211102 |
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| 摘 要： | 传统水轮发电机失磁保护多采用阻抗原理或导纳原理的静态稳定边界判据,在实践中得到广泛应用,但也存在一定问题。通过对凸极发电机失磁过程的直接推导,获得水轮发电机的水滴状失磁静态稳定极限导纳曲线,无需进行拟合。据此提出一种导纳原理失磁保护新判据,可真实反映水轮发电机静态稳定边界,且整定方便,应用效果良好。
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| 关 键 词： | 失磁 导纳判据 凸极发电机 静态稳定边界 水滴状曲线 |
LOE protection criterion based on admittance characteristic for hydraulic generator |
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| SHEN Quanrong,CHEN Jiasheng,CHEN Jun,GUO Zhigang and WANG Guang.LOE protection criterion based on admittance characteristic for hydraulic generator[J].Electric Power Automation Equipment,2017,37(7). |
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| Authors: | SHEN Quanrong CHEN Jiasheng CHEN Jun GUO Zhigang and WANG Guang |
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| Affiliation: | Nanjing NR Electric Co.,Ltd.,Nanjing 211102, China,Nanjing NR Electric Co.,Ltd.,Nanjing 211102, China,Nanjing NR Electric Co.,Ltd.,Nanjing 211102, China,Nanjing NR Electric Co.,Ltd.,Nanjing 211102, China and Nanjing NR Electric Co.,Ltd.,Nanjing 211102, China |
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| Abstract: | Traditional LOE(Loss-Of-Excitation) protection for hydraulic generator commonly adopts the state stability limit criterion based on impedance principle or admittance principle. Though applied widely in practical engineering, there are still some problems. Without fitting, a teardrop-shaped admittance curve of LOE state stability limit is directly deduced based on the LOE process of salient-pole generator and a new LOE protection criterion based on admittance principle is proposed to reflect the actual state stability limit of hydraulic generator. Its setting is easy and its application effect is good. |
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| Keywords: | excitation-loss admittance criterion salient-pole generator static stability boundary teardrop-shaped curve |
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