基于IEEE 1459标准的非线性负载有功功率测量研究

Research on Active Power Measurement of Nonlinear Load Based on IEEE 1459 Standard

摘要:

针对谐波有功损耗测量问题，文中改进了Emanuel功率理论中非线性负载等效模型，并结合基于Emanuel功率理论的IEEE 1459标准中视在功率分解公式，推导了基于改进的非线性负载等效模型的谐波有功损耗测量表达式；利用Matlab仿真分析非线性负载有功损耗的3种测量方式；通过比较得出所提测量方法能更准确方便地测量非线性负载有功损耗。最后，利用电能质量测量仪器，实测某电网10 kV负载谐波含量，结合所提方法计算负载有功损耗，验证了该方法的有效性及其带来的经济效益。

Abstract:

The nonlinear load equivalent model of Emanuel power theory is improved for harmonic active loss measurement problem. Combined with the apparent power decomposition formula of IEEE 1459 standard based on Emanuel power theory, the harmonic active loss measurement expression based on the improved nonlinear load equivalent model are derived. The results of three measurement methods for nonlinear load active loss is analyzed by Matlab simulation. By comparison, the proposed measurement method can measure the nonlinear load active loss more accurately and conveniently. Finally, the power quality measurement instrument is used to measure the harmonic content of 10 kV load in a power grid. The load loss is calculated by the proposed method, which verifies the effectiveness of the proposed method and the economic benefits.