XJ700电动储能拖挂式修井机的研制

Development of XJ700 Electric Energy Storage Trailer-mounted Workover Rig

针对传统修井机功率配置大、传动效率低、污染严重以及网电修井机高压接电流程复杂等问题,研制了XJ700电动储能拖挂式修井机。该修井机由井场抽油机变压器供电,以"直流微网"技术为核心,实现了多种性质电源并网供电及电能合理分配,配备超级电容储能装置弥补变压器容量的不足,解决了小容量井场电源供电条件下使用大功率电机工作的难题。在完成型式试验基础上,进行了现场工业试验。试验结果表明:井场50 k VA变压器能够满足储能修井机作业,与常规柴油机驱动修井机相比,储能修井机节约燃料费用60%以上,作业效率提高30%;超级电容能够对绞车电机功率"削峰补谷",充放电响应及时,整机作业效率大幅提升,节能效果明显。该产品的研制成功为修井机油改电及电动修井机推广提供了有效解决方案。

To address the issues of conventional workover rig like high power allocation,low transmission efficiency,heavy pollution and complicated process of high-voltage connection of network power,the XJ700 electric energy storage trailer-mounted workover rig has been developed. The workover rig,taking DC microgrid as core technology,could be supplied by the pumping unit transformer,which can join several power sources into one power network and properly distribute energy. The equipment is equipped with super capacitor energy storage device to make up the transformer capacity,so that to address the high-power motor work issue under the field power supply with small capacity. On the basis of the type test,the field industrial test has been carried out. The test results show that the 50 kVA transformer was capable for the energy storage workover rig. Compared with the conventional diesel driven workover rig,the energy storage workover rig could save over 60% fuel cost and achieve an operation efficiency increase of 30%. The super capacitor has a function of 'cut peak fill valley'for the drawwork motor power,allows timely charge and discharge response,thus achieving greatly improved machine operating efficiency and significant energy-saving performance. The successful development of the product provides an effective solution for workover rig power change from oil to electricity and for the application promotion of electric workover rig.