一种高压电动机断相的继电保护方案

On the Relay Protection Scheme on High Voltage Motor Phase Failure

高压电动机可用于驱动各种不同机械之用,其制造质量和使用要求都很高,必须正确的安装、使用、维护、保养,才能保证长周期的运转。在生产中的应用中,由于断相运行造成电动机被烧毁的比例很高。分析了三种常见的高压电动机断相运行状态,针对高压电动机断相的特征,提出了适合高压电动机断相保护的继电保护方案。

With the continued growth of production and production equipment becaming more larger in factory, it makes the motor power get more and more large. This must require a high quality and reliable electrical equipment to ensure the continuity of production process, once the downtime will cause huge economic losses, especially for high voltage motors. It can be used for driving various machinery. It is very important to guarantee the long cycle of the operation through correct installation, use and maintenance. So it demands the manufacturing quality and use requirements very high. However, it has a high proportion to motor burned down owing to broken operation in appli- cation. This paper analyzes three common high voltage motor broked operation states. According to the characteris- tics of high voltage motor broked, put forward the suitable relay protection scheme for high voltage motor broken phase protection.