海上平台电潜泵共直流母线多传动变频驱动技术

Variable frequency drive technology of electric submersible pump using multidrive system with common DC Bus in Offshore Platform

目前"1对1"变频+无源滤波器的电潜泵驱动方式能有效满足油田开发需求,但随着区域油田的开发、单平台开发井数量的增加,该方案设备尺寸大、占地面积大、散热量大等技术瓶颈日益凸显。传统的"1对1"变频+无源滤波器方案,设备间存在谐波相互干扰、大量集中使用时平台普遍存在无功过补发热严重,故障率高等问题。海上采油平台单个平台电潜泵数量可达几十套,是典型的集中采用变频器控制的方式,特别适用共直流母线多传动方案。

At present,one to one electric submersible pump drive system(variable frequency drive+passive filter)caneffectively meet the requirements of oilfield development,but with the development of regional oilfield and the increasing singleplatform wells,some technical bottlenecks occurs for its large equipment size and ground area requirement and high heat release.Thetraditional one to one drive system has many problems,such as harmonic interaction among the equipment,reactive power overcompensationin high intensive use and high failure rate.Generally,dozens of electric submersible pumps can be used in a singleoffshore oil production platform,which is a typical application of multiple variable frequency drive system and especially suitable forthe application of multidrive plan with common DC bus system.