| 大型调相机内部故障特征及纵向零序电压保护性能分析 |
| |
| 引用本文： | 桂林,李岩军,詹荣荣,牛化敏,王祥珩,王维俭.大型调相机内部故障特征及纵向零序电压保护性能分析[J].电力系统自动化,2019,43(8):145-149. |
| |
| 作者姓名： | 桂林 李岩军 詹荣荣 牛化敏 王祥珩 王维俭 |
| |
| 作者单位： | 清华大学电机工程与应用电子技术系,北京市100084;电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京市100084;中国电力科学研究院有限公司,北京市,100192 |
| |
| 基金项目： | 国家电网公司总部科技项目“调相机故障特性模拟分析、继电保护技术及运行控制技术研究” |
| |
| 摘 要： | 大型调相机(容量为300 Mvar)实际运行中存在定子绕组匝间短路的可能,不装设匝间短路保护或匝间短路保护性能不完善将是调相机安全运行的严重隐患。文中运用"多回路分析法",对两种冷却方式大型调相机所有实际可能发生的内部故障进行了仿真分析,分析结果表明大型调相机现有主保护配置方案(完全纵差保护+纵向零序电压保护)存在较大的保护死区。进一步分析了纵向零序电压保护不能动作的故障类型,为大型调相机主保护性能的改善提供借鉴。
|
| 关 键 词： | 大型调相机 匝间短路 内部故障分析 纵向零序电压保护 裂相横差保护 |
| 收稿时间： | 2018/10/6 0:00:00 |
| 修稿时间： | 2019/3/9 0:00:00 |
Analysis of Internal Fault Characteristics and Longitudinal Zero-sequence Overvoltage Protection Performance of Large-scale Condenser |
| |
| GUI Lin,LI Yanjun,ZHAN Rongrong,NIU Huamin,WANG Xiangheng and WANG Weijian.Analysis of Internal Fault Characteristics and Longitudinal Zero-sequence Overvoltage Protection Performance of Large-scale Condenser[J].Automation of Electric Power Systems,2019,43(8):145-149. |
| |
| Authors: | GUI Lin LI Yanjun ZHAN Rongrong NIU Huamin WANG Xiangheng and WANG Weijian |
| |
| Affiliation: | Department of Electrical Engineering, Tsinghua University, Beijing100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing 100084, China,China Electric Power Research Institute, Beijing 100192, China,China Electric Power Research Institute, Beijing 100192, China,Department of Electrical Engineering, Tsinghua University, Beijing100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing 100084, China,Department of Electrical Engineering, Tsinghua University, Beijing100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing 100084, China and Department of Electrical Engineering, Tsinghua University, Beijing100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing 100084, China |
| |
| Abstract: | Large-scale condenser(300 Mvar)has the possibility of stator winding inter-turn short-circuit in practice. It will be a serious hidden danger for the safe operation of the condenser that there is no inter-turn short-circuit protection or the performance of inter-turn short-circuit protection is not perfect. The multi-loop analysis method is used to simulate and analyze all possible internal faults of the large-scale condenser with two different cooling modes. The results show that there is a large dead zone in the existing main protection configuration of the large-scale condenser(complete longitudinal differential protection + longitudinal zero-sequence overvoltage protection). The failure types of longitudinal zero-sequence overvoltage protection is further analyzed, which can provide reference for the performance improvement of the main protection configuration of large-scale condensers. |
| |
| Keywords: | large-scale condenser inter-turn short-circuit internal fault analysis longitudinal zero-sequence overvoltage protection split phase transversal differential protection |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电力系统自动化》浏览原始摘要信息 |
|
点击此处可从《电力系统自动化》下载全文 |
|
