智能电网节能发电频率调节控制方法仿真  

Simulation of Energy-Saving Power Generation Frequency Regulation Control Method for Smart Grid

作　　者：王德国[1] 陈永波 WANG De-guo;CHEN Yong-bo(Jilin University,Changchun Jilin 130021,China)

机构地区：[1]吉林大学,吉林长春130021

出　　处：《计算机仿真》2020年第11期104-108,共5页Computer Simulation

摘　　要：对智能电网节能发电频率进行控制可以有效避免电网安全隐患。传统控制方法的控制目标均为单一电网,难以降低控制负载,容易造成发电频率控制偏差。提出了智能电网虚拟同步发电频率控制方法。以调速单元和励磁调节单元为核心设计结构,制备电网发电控制器作为智能电网的源动输出控制单元;调节智能电网功率,划分调节完毕后电流能量簇,生成能量簇过滤索引;根据能量簇索引传输过滤能量簇,将过滤后的电流引入智能电网中的微网中,根据电网三相拓扑结构频率闭环传递函数,合成矢量空间,接收能量簇感知指令;在微网中生成序列命令;根据三相数值,判断合闸条件,实现电网发电频率调节控制。实验结果表明,利用设计的虚拟同步发电控制方法后,高频电流控制偏差降低了29%,低频电流控制偏差降低了32%,有效达到了降低控制偏差的目的。Traditionally,the control target is a single power grid.It is difficult to reduce the control load and it is easy to cause the deviation of power generation frequency control.This paper focuses on a method to control the virtual synchronous power generation frequency of smart grid.Taking the Speed regulating unit and the field excitation adjustment unit as the core design structure,we prepared the grid power generation controller as the source output control unit of the smart grid.Then,we adjusted the power of smart grid and divided the current energy cluster after the adjustment,so that the index of energy cluster filter was generated.According to the energy cluster index,we transmitted and filtered the energy cluster,and introduced the filtered current into the micro grid in smart grid.Moreover,we synthesized the vector space by the frequency closed loop transfer function of the three-phase topology,and then received the energy cluster sensing instruction.In addition,we generated a sequence command in micro grid.The three-phase value,we judged the closing condition and thus to achieve the power generation frequency adjustment control of power grid.Simulation results show that the high-frequency current control deviation is reduced by 29%and the low-frequency current control deviation is reduced by 32%,so the proposed method effectively achieves the purpose of reducing control deviation.

关 键 词：智能电网 频率调节 控制 励磁 低频电流 

分 类 号：TB391[一般工业技术—材料科学与工程]