导纳型失磁保护与励磁装置低励限制的整定配合

华电技术 ›› 2019, Vol. 41 ›› Issue (9): 63-66.

导纳型失磁保护与励磁装置低励限制的整定配合

上海申能临港燃机发电有限公司，上海〓201306

出版日期:2019-09-25 发布日期:2019-10-18

Setting coordination of field loss protection with admittance and excitation device low excitation limit

Shanghai Shenergy Lingang CCGT Power Generation Company Limited, Shanghai 201306, China

Online:2019-09-25 Published:2019-10-18

摘要/Abstract

摘要：

为防止失磁保护误动，发电机失磁保护和励磁低励限制在整定上必须相互配合。从功率计算公式出发，推导出了有功功率-无功功率(P-Q)平面转化成导纳平面的过程。介绍了导纳型失磁保护和ABB U6800励磁装置低励限制的作用原理。以上海申能临港燃机发电有限公司 #3发电机为例，对发电机失磁保护进行整定计算。对发电机的进相能力进行实际测试，从而得到励磁装置低励限制的精确定值参数。最后对发电机失磁保护与励磁装置低励限制进行整定配合校核，从而保证低励限制先于失磁保护之前动作，防止失磁保护误动。

关键词: ')">mso-font-kerning: 1.0000pt">

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">发电机, 进相, 励磁, font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">P-Qfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">平面, 导纳平面, font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt"> , 失磁保护, 低励限制font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', To prevent the generator field loss protection from being misoperated, it must coordinated with excitation device low excitation limit.Based on the calculation formula of power, it deduced the process of transformation from P-Q plane into admittance plane, and introduced the principle of field loss protection with admittance and the principle of low excitation limit of ABB U6800 excitation device. Taking the No.3 generator of Shanghai Shenergy Lingang CCGT Power Generation Company Limited as an example, the calculation of generator field loss protection was set up. The actual capability of leading phase of the No.3 generator was tested, and the exact parameters of the low excitation limit of the excitation device were obtained. At the end, the setting coordination of generator field loss protection and excitation device low excitation limit was checked, so as to ensure low excitation limit to precede field loss protection, and prevent the field loss protection from being misoperated.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">generator, leading phase, excitation, font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">P-Qfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt"> plane, admittance plane, field loss protection, low excitation limit

张波. 导纳型失磁保护与励磁装置低励限制的整定配合[J]. 华电技术, 2019, 41(9): 63-66.

ZHANG Bo.

Setting coordination of field loss protection with admittance and excitation device low excitation limit [J]. Huadian Technology, 2019, 41(9): 63-66.

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