摘要
文章介绍了一种中小型电动机智能化综合保护。保护采用更准确反映电动机温升过程的正负热积累模型 ,充分考虑了电动机的冷态和热态时允许的温升不同 ,分别用全电流热过载和负序热过载保护转子绕组和定子绕组。启动的在线检测和自适应过电流保护的相互配合提高了保护的性能。
The article presents a kind of intelligentized integrated micromidi electromotor protection.The protection adopts positive and negative heat accumulating models which reflect electromotors' temperature rising more exactly.The allowed rising temperature makes the difference when the electromotor is hot or cool into account.It applys complete current and negative sequence current heat accumulation respectively to protect rotor and stator winding.The mutual cooperation of in time startup inspecting and self-adaptability of overcurrent protection improves the relay performance.
出处
《继电器》
CSCD
2000年第8期32-35,共4页
Relay
