摘要
由于交直流微电网计量结果与实际电能情况存在较大的误差,误差控制的有效性较差,进而影响了交直流微电网经济效益的保障。为了加强电能计量的精准度,该文提出了强干扰环境下交直流微电网电能计量误差控制研究。通过建立信号模型解析了交直流微电网运行环境中受到的谐波干扰以及电磁干扰,构建三角波调制下的调幅电路数学模型。通过定义调节因数感知微电网的运行态势,结合电能计量误差值及环境干扰参数补偿相应的误差,实现电能计量的误差控制。通过实验可知,该方法功率比例偏差值较小,控制精度较优,满足了实际的电能计量需求。
Due to significant errors between the measurement results of the AC/DC microgrid and the actual energy situation,the effectiveness of error control is poor,which in turn affects the guarantee of the economic benefits of the AC/DC microgrid.In order to enhance the accuracy of electricity metering,a study on error control of electricity metering in AC/DC microgrids under strong interference environments is proposed.By establishing a signal model,the harmonic interference and electromagnetic interference in the operating environment of AC/DC microgrids were analyzed,and a mathematical model of the amplitude modulation circuit under triangular wave modulation was constructed.By defining adjustment factors to perceive the operating situation of microgrids,and combining the error values of energy metering and environmental interference parameters to compensate for corresponding errors,the error control of energy metering is achieved.Through experiments,it is known that this method has a small deviation in power ratio,excellent control accuracy,and meets the actual needs of electricity metering.
作者
裘星
尹仕红
张之涵
谢智伟
QIU Xing;YIN Shihong;ZHANG Zhihan;XIE Zhiwei(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China)
出处
《自动化与仪表》
2024年第9期89-92,109,共5页
Automation & Instrumentation
关键词
交直流微电网
电能计量
强干扰环境
计量误差
误差控制
控制方法
AC/DC microgrid
electricity metering
strong interference environment
measurement error
error control
control methods
