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以某变电站35 kV母线的谐波抑制和无功补偿项目为背景,首先介绍注入式混合型有源滤波器(hybrid active power filter with injection circuit,HAPFIC)的工作原理及控制策略,分析了HAPFIC有源部分从电网获取能量的原理,提出了利用电压平方作为控制量的新型直流侧电压闭环控制方法;然后描述了HAPFIC装置的RTDS闭环仿真试验,分析了建模过程中遇到的难点及其解决办法;最后利用RTDS对装置的控制策略、保护策略等进行了验证,目前该装置已在现场稳定运行。
Based on the project of harmonic suppression and reactive power compensation of a 35 kV busbar in a substation, the working principle and control strategy of hybrid active power filter with injection circuit (HAPFIC) are introduced firstly. Source part of the power from the grid principle, put forward the use of voltage squared as the control of a new type of DC voltage closed-loop control method; and then described the HAPFIC RTDS closed-loop simulation test, analysis of the modeling process encountered difficulties and solutions Finally, the control strategy, protection strategy and so on of the device were verified by using RTDS. At present, the device has been operating stably in the field.