摘要
基于波兰学者提出的一种优化方法,结合电力系统能量传输特性,通过构造拉格朗日函数的方法,分别在单相、三相电路的情形下,推导了特定约束条件下最优电流及各电流分量的表达形式,并给出了最优电流的检测算法;通过仿真分析,验证了该优化方法的补偿效果,该方法明显提高了电路的能量传输效率,并且解释了电源含内阻情况下Fryze理论电流分解的局限性。
Based on an optimization method proposed by Polish scholars,this paper combines the energy transfer characteristics of power system,it derives the expression of optimal current and decomposes the current components in single- phase and three- phase circuitsthrough constructing a Lagrange function,as well as provides the detection algorithm for optimal current. By the simulation analysis,this paper verifies the compensation effect of the optimization method,the method can improve the efficiency of energy transfer in circuit noticeably. Finally,the method can explain the limitations of Fryze theory in current decomposition when voltage sources have internal impedance.
出处
《电测与仪表》
北大核心
2016年第8期19-25,44,共8页
Electrical Measurement & Instrumentation
基金
国家自然科学基金青年基金资助项目(51207051)
关键词
补偿特性
电力调节
功率理论
优化方法
拉格朗日函数
compensation characteristics
power conditioning
power theory
optimization method
Lagrange function
