摘要
针对罗氏有源电子互感器在现场运行中存在的电子回路易损坏、检修维护麻烦等问题,提出了罗氏无源支柱式电子式电流互感器的设计方案:将原置于高压侧的电子采集单元下放到互感器底座的低压二次侧,利用专门设计的传输模拟小信号的屏蔽电缆连接传感头与电子回路,采用站内电缆供电解决了电子回路供电问题。依据该方案设计的110kV罗氏无源支柱式电子互感器已经通过国网电科院的型式检验,并在某变电站挂网运行。运行结果表明该方案具有工程实用性。
This article puts forward the design proposal of the aim at some disadvantages existing in the Rogowski active prop easily, maintained troublesomely. Collection unit located on Rogowski passive prop electronic current transformers to electronic current transformers implements like destroyed high-pressure side is moved to low-pressure side in transformer foundation, sensing head and electric circuit are connected by special shielded cable, instation cable are used to solve poWer supply of electric circuit, the l l0kV Rogowski passive prop electronic current transformers according to this proposal has passed type tests by SGC electrical science institute, and also test runs in certain substation. The results indicates that this program has engineering practicability.
出处
《电测与仪表》
北大核心
2011年第11期80-83,共4页
Electrical Measurement & Instrumentation
关键词
电子式电流互感器
电子回路
屏蔽电缆
电磁兼容
可靠性
electric current transformer, electronic circuit, shielded cable, electromagnetic compatibility, reliability
