大容量冲击短路试验发电机组继电保护方案  

Relay Protection Scheme of Large Capacity Impact Short Circuit Test Generator Set

作　　者：丁锦华 苗本健 李赛赛 杨仁旭 郭向荣 DING Jinhua;MIAO Benjian;LI Saisai;YANG Renxu;GUO Xiangrong(Guangdong Product Quality Supervision and Inspection Institute,Guangzhou,Guangdong 510330,China)

机构地区：[1]广东产品质量监督检验研究院,广东广州510330

出　　处：《东北电力技术》2024年第2期58-62,共5页Northeast Electric Power Technology

基　　金：广东省重点研发计划项目(2020B0404020003)。

摘　　要：随着实验室容量不断提高,大容量冲击短路试验发电机组应用日益增加,其继电保护配置对机组与电网安全十分重要。以冲击短路试验发电机组继电保护为研究对象,描述了冲击短路试验发电机的主要故障类型,介绍了故障的继电保护原理,对比了电磁式电流互感器和全光纤电流互感器特点。同时以额定容量100 MVA冲击短路试验发电机为例,设计了适用于冲击短路试验发电机的继电保护方案,并详细分析了发电机差动保护、定子过负荷保护、转子接地保护参数整定方式,可为冲击短路发电机组继电保护配置提供参考。With the continuous improvement of laboratory capacity,the application of large capacity impact short circuit test generator set is increasing day by day.Its relay protection configuration is very important for the safety of the generator set and the power grid.Taking the relay protection of impact short-circuit test generator set as the research object,it describes the main fault types of impact short-circuit test generator,introduces the principle of relay protection for the main faults,and compares the characteristics of electromagnetic current transformer and the all-fiber current transformer.At the same time,taking the impact short-circuit test generator with rated capacity of 100 MVA as an example,the relay protection scheme suitable for impact short-circuit test generator is designed,and the setting modes of generator differential protection,the stator overload protection and the rotor grounding protection are analyzed in detail,which can provide reference for the relay protection configuration of impact short-circuit generator set.

关 键 词：冲击短路试验 发电机组 继电保护 全光纤电流互感器 差动保护 乒乓原理 

分 类 号：TM774[电气工程—电力系统及自动化]