含感应加热电源的电网电压畸变信号智能判别研究  

Research on intelligent discrimination of grid voltage distortion signal with induction heating power supply

作　　者：费丹雄 夏学智 陈吉 张丽美 魏琛琛 FEI Danxiong;XIA Xuezhi;CHEN Ji;ZHANG Limei;WEI Chenchen(State Grid Shanghai Fengxian Electric Power Company,Shanghai 201499,China)

机构地区：[1]国网上海奉贤供电公司,上海201499

出　　处：《粘接》2024年第8期189-192,共4页Adhesion

摘　　要：感应加热电源运行过程中,受光伏电网周边环境扰动的影响,造成线路谐波引起电压畸变。提出含感应加热电源的光伏电网母线电压畸变信号判别方法,以期保证光伏电网的稳定运行。建立谐波耦合导纳矩阵模型,完成含感应加热电源的电网电压畸变情况分析;通过波形包络阈值线在时域、小波域、频域上提取电网电压扰动信号特征;基于支持向量机方法完成电压畸变信号的判别。实验结果表明,所提方法在单一扰动信号和多种扰动信号情况下,均具有较高的电压畸变信号识别正确率和效率。During the operation of the induction heating power supply,due to the influence of the environmental disturbance around the photovoltaic grid,the line harmonics will cause voltage distortion.In order to ensure the sta⁃ble operation of photovoltaic power grid,a method to distinguish the voltage distortion signal of photovoltaic power grid bus with induction heating power supply was proposed.The harmonic coupling admittance matrix model was es⁃tablished to analyze the voltage distortion of the power grid with induction heating power supply.The characteristics of power grid voltage disturbance signal were extracted in time domain,wavelet domain and frequency domain through the waveform envelope threshold line.The voltage distortion signal was discriminated based on support vec⁃tor machine.The experimental results showed that the proposed method had high accuracy and efficiency in the case of single disturbance signal and multiple disturbance signals.

关 键 词：感应加热电源 光伏电网 电压畸变 支持向量机 谐波耦合导纳矩阵 

分 类 号：TM761.1[电气工程—电力系统及自动化]