基于定点DSP的电参量测量算法优化  

Optimization of Electric Parameter Measurement Algorithm Based on Fixed-Point DSP

作　　者：张超 任晓红 王宇 

机构地区：[1]哈尔滨电工仪表研究所,哈尔滨150028

出　　处：《电测与仪表》2014年第22期72-75,81,共5页Electrical Measurement & Instrumentation

摘　　要：针对定点DSP计算高精度电能质量相关电参量时计算量不足和数据溢出的问题,提出了对电参量算法的优化方法。根据定点DSP数据最大为32bit和善于计算乘累加的特点,改进电参量算法在DSP上的实现方式,并给出了算法优化推导过程,分析了优化前后的误差。通过实验验证经过优化后可以有效的防止数据溢出,大幅度降低计算量,避免了更换DSP带来的二次开发。To address the problem of computation insufficiency and data overflow in calculating high-precision elec-tric power quality related parameters using fixed-point DSP,we propose the optimization algorithm for electrical pa-rameters. According to the characteristic of fixed-point DSP that has maximum 32 bit data length and is efficient in multiplication and accumulation,we improve the way of implementation of electrical parameter algorithm on the DSP, then present the derivation of algorithm optimization and analyze the error before and after optimization. Finally,the experiment verifies that after optimization,the algorithm can effectively prevent data overflow and reduce the amount of calculation,therefore avoid the secondary development caused by the replacement of DSP.

关 键 词：电参量 算法优化 电能质量 

分 类 号：TM933[电气工程—电力电子与电力传动]