摘要
为改善配电网静止同步补偿器DSTATCOM(distribution static synchronous compensator)传统检测方法补偿滞后时间和检测周期长、补偿精度低的缺点,提出了一种基于软件优化和间隔采样的新型高补偿精度的检测方法。在对DSTATCOM补偿指令电流特性的分析基础上,对软件流程进行相应调整,使补偿滞后时间大大减少,同时根据间隔采样理论,在数字处理器计算能力不变的情况下,减少软件计算量,缩短检测周期,使谐波抑制和无功补偿精度得到明显提高。该方法无需复杂算法,实现简单、有效。在Matlab/Simulink环境中进行了稳态和暂态仿真分析,并且研制了一台容量为20 k VA的DSTATCOM实验样机,仿真和实验结果证明了新型检测方法的正确性和可行性。
To overcome the drawback of the traditional detection method for DSTATCOM,which has long compensation delay,long detection period and low compensation accuracy of harmonic suppression and reactive power compensation,a novel detection method for DSTATCOM with high compensation precision based on software optimization and interval sampling is proposed. Software flow is adjusted based on the analysis of the reference compensation currents,and the compensation delay is curtailed. Meanwhile,computational complexity is reduced and detection period is shortened under the same processing ability of DSP based on interval sampling,so the compensation accuracy is improved. The method is simple to implement without complicated algorithm. Results of steady state and transient state condition obtained by DSTATCOM simulations system built in Matlab/Simulink and prototype experiments of a 20 k VA DSTAT-COM validate the validity and feasibility of the proposed method.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2015年第10期62-68,共7页
Proceedings of the CSU-EPSA
关键词
配电网静止同步补偿器
补偿滞后
检测周期
软件优化
间隔采样
瞬时无功功率理论
distribution static synchronous compensator（DSTATCOM）
compensation delay
detection period
software optimization
interval sampling
instantaneous reactive power theory
