油田测井装置深井电机地面供电方式的研究

Research on Ground Surface Power Supply Mode for The Deep-well Motor in Oil-well Logging Devices

针对油田测井装置,对其驱动液压泵电机的供电方式进行了研究,比较分析六种供电方式的优缺点,提出一种最有应用前途的电机供电方式。该供电方式克服了传统的"调压器加变压器"的油田测井电源方案的诸多缺点,具有体积小、重量轻、电压调节方便、起动电流小、动态响应快、智能化程度高等优点。该电源由多个IGBT功率变换单元组成,经过AC/DC/AC-AC/DC/AC多个电压变换环节,实现从单相AC110V低压至双相AC600-AC1200V中压的变换。

Aiming at the oil-well logging device, this paper is working on power supply modes for its driving hydraulic pump motor, and here it has compared and analysed advantages and disadvantages of seven power supply modes, then put forward a most promosing motor power supply mode. This mode has overcome disadvantages existed in traditional oil-well logging power supply method, i.e. , the transitional ＂ voltage regulator along with transformer＂ method, and provided advantages of small volume, light weight, convenient voltage regulation, small starting voltage, fast transient response, and high intelligence degree. This power supply is composed of several IGBT power transforming units, and has realized the transformation from single-phase low voltage of AC110V to dual-phase middle voltage of AC600 -AC1200V after multiple AC/DC/AC-AC/DC/AC voltage transform links. To this power supply device, the design scheme is new, and the technology is advanced, and the performance index is superior. Therefore, it can be spreaded and applied in the field of oil-well logging.