JANCD-1021降低设备运行维护费用。采用变频调节后，可对电机实现软启动，启动时电流不超过电机额定电流的1.2倍，对电网无任何冲击，由于通过调节电机转速实现节能，在负荷率较低时，转速也降低，主设备及相应辅助设备如轴承等磨损较前减轻，维护周期可加长，检修费用下降，设备运行寿命延长。
⑨ 增加了电气保护。与原来旧系统相比较，变频器具有过流、短路、过压、欠压、缺相、温升等多项保护功能，更完善地保护了电机。
⑩ 提高了自动化水平，为油田的数字化建设提供底层保障。直接通过变频器实现动态调整抽油机的转速，可无级调节抽油机的冲次，可方便实现远程集中监控，便于检测设备运行状况。
六、结束语
深圳市微能科技有限公司JANCD-1021系列抽油机节能控制柜以其极高的可靠性、适应性和强大的功能在油田的节能改造中发挥着重要作用，在井场长时间的稳定运行受到一线员工的好评，由它带来的无级调速大大降低了现场冲次调节的作业强度和时间，其能量回馈功能使其节能达到最佳化。随着油田节能改造步伐的加快，WIN-PSS-EP系列产品必将以其出色的表现赢得油田用户的信赖。WIN-PSS-EP的技术特点
WIN-PSS-EP系统专为油田应用设计，具有如下特点：
① 性能稳定，可靠性高。
② 使用能量回馈的方式处理再生能量。能量回馈比一般的制动电阻多节约10%~15%的电能，并且不必为现场应用中制动电阻的散热问题而烦恼。这样，不仅带来了经济效益，也缓解了油田电网的压力。
③ 谐波含量小。回馈单元同步检测电源电压，采用PWM控制方式，并内置输入滤波装置，全程噪声过滤内，回馈电压畸变率小于国家标准，谐波含量小，真正做到绿色无污染。
④ 防护等级高。WIN-PSS-EP系统结构完全采用野外设计标准，防护等级为IP54，系统外观如图3。
⑤ 支持通讯监控。WIN-PSS-EP系统作为数字化油田的底层设备，可与油田监控系统联网，实现远程监控。实时观测油井驱动电机的电量参数，在没有实现示功图采集的井场可以作为分析油井工况的依据。
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