上电调相机内部故障分析及主保护配置方案优化设计

doi:10.11930/j.issn.1004-9649.201711222

中国电力 ›› 2017, Vol. 50 ›› Issue (12): 33-37.DOI: 10.11930/j.issn.1004-9649.201711222

上电调相机内部故障分析及主保护配置方案优化设计

桂林¹, 赵斌超², 王光³, 王祥珩¹, 王维俭¹

1. 清华大学电机系电力系统及发电设备控制和仿真国家重点实验室,北京 100084;
2. 国网山东省电力公司电力科学研究院,山东济南 250003;
3. 南京南瑞继保电气有限公司,江苏南京 211102

收稿日期:2017-09-10 出版日期:2017-12-20 发布日期:2018-01-30
作者简介:桂林（1974—）,男,安徽广德人,博士,副教授,从事大机组保护及故障分析研究。E-mail:guilin99@mails.tsinghua.edu.cn
基金资助:
国家自然科学基金资助项目（50707014,51277103）

Internal Fault Analysis and Optimization Design of Main Protection Scheme for Shanghai Electric Phase Modifier

GUI Lin¹, ZHAO Binchao², WANG Guang³, WANG Xiangheng¹, WANG Weijian¹

1. Dept of Electrical Engineering, State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment,Tsinghua University, Beijing 100084, China;
2. State Grid Shandong Electric Power Research Institute, Jinan 250003, China;
3. NR Electric Co., Ltd., Nanjing 211102, China

Received:2017-09-10 Online:2017-12-20 Published:2018-01-30
Supported by:
This work is supported by National Natural Science Fund (No. 50707014, No. 51277103).

摘要/Abstract

摘要： 大型调相机实际存在定子绕组匝间短路的可能,不装设匝间短路保护将是调相机安全运行的严重隐患。运用“多回路分析法”,对上海发电机厂制造的300 Mvar调相机进行了内部故障分析及主保护配置方案的优化设计,分析表明应根据上电调相机中性点侧引出方式的差异而采取不同的主保护配置方案。与基于传统电磁型电流互感器的中性点引出方式及主保护方案相比,基于柔性光学电流互感器的裂相横差保护将彻底改变大型汽轮发电机无完善定子绕组匝间短路保护的现状,且对发电机设计制造影响小,从而为发电机的安全运行提供高质量的保证。

关键词: 大型调相机, 匝间短路, 内部故障分析, 裂相横差保护, 光学电流互感器

Abstract: Due to the possible stator winding inter-turn short circuit in large phase modifiers, there will be seriously potential risk for the safe operation of the phase modifier without inter-turn short circuit protection. Internal fault analysis and main protection configuration scheme optimization design of a 300 Mvar phase modifier manufactured by Shanghai Electric are carried out with the multi-loop method. The analysis showed that different main protection configuration schemes should be chosen for different outgoing modes of the phase modifier neutral point. Compared with the neutral point outgoing mode and main protection scheme based on the traditional electromagnetic current transformer, the split-phase transverse differential protection based on FOCT will completely change the current status of large turbo-generator without stator winding inter-turn short circuit protection and has little influence on generator design and manufacture, thus providing the high quality guarantee for the safe operation of the generator.

Key words: large phase modifier, inter-turn short circuit, internal fault analysis, split-phase transverse differential protection, flexible optical current transformer

中图分类号:

TM311

桂林, 赵斌超, 王光, 王祥珩, 王维俭. 上电调相机内部故障分析及主保护配置方案优化设计[J]. 中国电力, 2017, 50(12): 33-37.

GUI Lin, ZHAO Binchao, WANG Guang, WANG Xiangheng, WANG Weijian. Internal Fault Analysis and Optimization Design of Main Protection Scheme for Shanghai Electric Phase Modifier[J]. Electric Power, 2017, 50(12): 33-37.

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上电调相机内部故障分析及主保护配置方案优化设计

Internal Fault Analysis and Optimization Design of Main Protection Scheme for Shanghai Electric Phase Modifier

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上电调相机内部故障分析及主保护配置方案优化设计

Internal Fault Analysis and Optimization Design of Main Protection Scheme for Shanghai Electric Phase Modifier

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