海上平台电网组网变压器智能化监控的实现方法

Realization Method of Intelligent Monitoring of Transformer in Offshore Power Network

海上电网作为典型的孤岛电网,各个电站平台之间都通过升压至35 kV组网。组网变压器在电网运行中起着至关重要的作用,变压器的短路、接地等故障因素都会对整个电网造成巨大影响,进而影响海上平台的安全生产运行。介绍基于变压器状态监测技术实现智能化监控的方法,通过电量、非电量监测的方式对发电机高低压侧电气参数、绕组温度、局部放电、铁芯电流等多维数据进行监测,并运用变压器的多维诊断和状态技术预知平台变压器故障状况,以期为海上平台日常操作与预防性维修提供指导。

As a typical isolated island power grid,offshore power grid is networked between various power station platforms by boosting to 35 kV. Network transformer plays an important role in the operation of power grid. Fault factors such as short circuit and grounding fault of transformer will have a great impact on the whole power grid and affect the production of offshore platform. This paper introduces the method to realize intelligent monitoring based on transformer condition monitoring technology,which monitors the multi-dimensional data such as electrical parameters,winding temperature,partial discharge and iron core current at the high and low voltage sides of the generator through electric quantity and non electric quantity monitoring,and predicts the fault condition of the platform transformer by using the multi-dimensional diagnosis and state technology of the transformer,so as to provide guidance for the daily operation and preventive maintenance of the offshore platform.