摘要
抽油机负载的特殊性导致油田电网功率因数普遍偏低,一般采用固定无功补偿或者无功动态补偿方法提高功率因数。但在实际运行中发现,由于补偿后抽油机端电压上升导致系统的无功需求以及补偿电容的无功输出均有变化,传统控制策略容易导致补偿电容频繁往复投切。通过分析模糊控制基本原理,选取合适的专家经验形成了相应的模糊控制规则表,从而将电压无功模糊控制策略应用到抽油机无功补偿控制器,并通过PSCAD仿真证明了该方法的有效性。
Because of particularity of the load,the power factor is generally low in oil-field.And some oil-fields general adopt fixed reactive power compensation or dynamic reactive power compensation to raise the power factor.But after pumping units adopt reactive power compensation devices,the reactive power demands of the system and the reactive power outputs of the compensating capacitor will change because the pumping units terminal voltage increased after compensation.Traditional control strategy often leads to compensation capacitor act frequently.The suitable expert experiences were used to form look-up table of fuzzy control rules,finally,applied voltage and reactive power fuzzy control to compensation controller of pumping units through analyzing fuzzy control principle.It also proves the effectiveness by PSCAD simulation.
出处
《电气传动》
北大核心
2010年第6期50-53,共4页
Electric Drive
关键词
负载特性
电压无功模糊控制
模糊控制规则查询表
仿真
particularity of the load
voltage and reactive power fuzzy control
look-up table of fuzzy control rules
simulation
