摘要
随着永磁同步电机已广泛应用于驱动油田大惯性采油设备,电压暂降后不脱网的永磁同步电机存在的倒发电过程会严重影响电网电压分布。该文根据永磁同步电机驱动大惯性负载且不脱网特性,利用矢量图分析法构建了电压对称暂降场景下的永磁同步电机倒发电模型。基于倒发电模型分析了电压暂降幅值与机械转矩对电机倒送功率的影响。基于PSCAD建模仿真,验证了该场景下倒发电模型及影响规律的准确性。该文所构建的永磁同步电机倒发电模型与影响因素分析对油田配电网认识倒发电危害和制定治理策略具有重要意义。
As permanent magnet synchronous motors have been widely used to drive the large inertia oil extraction equipment in oil fields, the inversion process of permanent magnet synchronous motors that do not go off the grid after a voltage sag will seriously affect the grid voltage distribution.Based on the characteristics of a permanent magnet synchronous motor driving large inertia load while not disconnecting from the grid, this paper uses the vector diagram analysis to construct a permanent magnet synchronous motor reverse power generation model under the scene of voltage symmetric sag. Based on the reverse generation model, the influence of the voltage sag amplitude and the mechanical torque on the reverse power of the motor is analyzed. Based on the PSCAD modeling and simulation, the accuracy of the downside-down? power generation model and the influence law in this scenario is verified. The permanent magnet synchronous motor inverted power generation model and the analysis of influencing factors constructed in this paper are of great significance for the oilfield distribution network to understand the inverted power generation hazards and formulate the governance strategies.
作者
仉志华
张昊
董浩东
张利
ZHANG Zhihua;ZHANG Hao;DONG Haodong;ZHANG Li(College of New Energy,China University of Petroleum(East China),Qingdao 266580,Shandong Province,China;Sinopec Shengli Petroleum Administration Co.,Ltd.,Electric Power Branch,Dongying 257000,Shandong Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2022年第3期1169-1176,共8页
Power System Technology
基金
国家自然科学基金项目(51977220)
山东省自然科学基金项目(ZR2019MEE057)。
关键词
永磁同步电机
电压暂降
倒发电
惯性负载
permanent magnet synchronous motor
voltage sag
inverted generation
inertial load
