电能质量扰动发生器控制策略及其实现.PDFVIP

第42 卷 第23 期 电力系统保护与控制 Vol.42 No.23 2014 年 12 月 1 日 Power System Protection and Control Dec. 1, 2014 电能质量扰动发生器控制策略及其实现 戴喜良，李尚盛，孙建军，杨泽洲, 吴 楠 (武汉大学电气工程学院，湖北 武汉 430072) 摘要：为了测试电力变压器、CVT、电力电容器、无功与谐波补偿装置等试验设备在电能质量扰动下的工况，设计了一种电 能质量扰动发生器，能模拟实际电网输出各种形式电压与电流扰动。采用电压外环与电流内环的 PWM 整流控制实现了直流电 压的稳定；利用电压前馈与重复学习相结合的控制策略实现了发生器较高精度输出；利用 DSP+FPGA 构建控制系统具有较好 的实时性与可靠性。通过 10 kV、2 MVA 工业样机实验，证明了设计的正确性。 关键词：电能质量扰动发生器；电压扰动；电流扰动；控制策略；DSP+FPGA Control strategies and implementation of power quality disturbance generator DAI Xi-liang, LI Shang-sheng, SUN Jian-jun, YANG Ze -zhou, WU Nan (School of Electrical Engineering, Wuhan University, Wuhan 430072, China) Abstract: In order to test the the working condition of devices such as power transformer, CVT, power capacitor, reactive and harmonic compensator in power quality disturbance environment, a power quality disturbance generator is developed, which can simulate the actual power system to output various forms of power quality voltage and current disturbance. The stability of the DC voltage is realized by use of voltage outer-loop and current inner-loop PWM rectifier control; by use of a control strategy which combines voltage feed-forward and repetitive learning, the high accuracy output is achieved; the control system constructed by DSP + FPGA has good real-time and reliability; the correctness of the design is proved through the tests on 10 kV, 2 MVA industrial prototype. Key words: power quality disturbance generator; voltage disturbance; current disturbance; control strategy; DSP+FPGA 中图分类号： T