抽油机电动机断续供电节能技术断电时刻判定方法

发布时间：2018-06-08 12:13

本文选题：游梁式抽油机电动机 + 断续供电　；参考：《电力自动化设备》2017年11期

【摘要】：游梁式抽油机电动机在一个运行周期内会存在重载、轻载、电动及发电工况交替出现的现象,针对此类型负荷,采用"断续供电"控制技术能够获得明显的节能效果,但受传动环节振动、井下液面等影响,电机负荷始终处于无规则波动状态,导致难以准确判定断电时刻。为了解决这一问题,提出一种基于模糊控制的断电时刻判定方法及相应控制策略。对负荷曲线变化特点、电动及发电工况持续时间等参数进行辨识;根据辨识结果选择最优"断续供电"控制方案,设计了以断电后转速变化值为输入变量、功率累加值为输出变量的模糊控制器,实现断电时刻准确判定。该控制器还可以实现动态负荷自动跟踪。基于所提策略研制了节能控制器并投入油田现场应用,获得了良好的节能效果。
[Abstract]:The motor of beam pumping unit will have the phenomena of heavy load, light load, electric and power generation alternately in a running cycle. In view of this type of load, using the control technology of "intermittent power supply" can obtain obvious energy saving effect. However, due to the vibration of transmission link and the downhole liquid level, the motor load is always in the state of irregular fluctuation, which makes it difficult to determine the power failure time accurately. In order to solve this problem, a fuzzy control method based on fuzzy control is proposed to determine the power failure time and the corresponding control strategy. The characteristics of load curve, the duration of electric and generation conditions are identified, the optimal control scheme of "intermittent power supply" is selected according to the identification results, and the variable value of rotational speed after power failure is designed as input variable. The fuzzy controller whose power accumulative value is the output variable can accurately judge the power failure time. The controller can also realize dynamic load tracking automatically. Based on the proposed strategy, the energy-saving controller is developed and applied in oil field, and good energy-saving effect is obtained.
【作者单位】：华北电力大学新能源电力系统国家重点实验室;中国电力科学研究院;
【基金】：国家自然科学基金资助项目(51307050) 中央高校基本科研业务费专项资金资助项目(2015ZD03)~~
【分类号】：TE933.1

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