【摘要】 为了研究110kV以上电压等级谐波限值,提出了相邻各电压等级的总谐波畸变率限值的计算式。结合我国高压电网实际情况,补充了典型网络的参数,搭建了一个具有完备电压等级的网络。并且分析了谐波从低电压等级到高压交流系统的传递规律,得到了220kV和500kV电压等级总谐波畸变率和谐波电流的限值;500kV侧引入了UHVDC作为谐波电流源,考察了谐波从高压电网传递到低电压等级的传递规律,给出了500kV和220kV电压等级总谐波畸变率的建议值。更多还原

【Abstract】 In order to study the limits of harmonics of the high voltage network,the calculation of the total harmonic distortion between the adjacent voltage levels is presented. Combined with the practical circumstances of the power network in china,the parameters of the typical network are supplied,and then the network contained all the voltage levels is formed. In order to achieved the total harmonic distortion in the 500 kV and 220 kV network and the limits of the harmonic current,the harmonic transfer law from the low voltage side to the high voltage side is analyzed; the harmonic transfer law from the 500 kV voltage side which viewed UHVDC as the harmonic current source to the lower voltage side is analyzed,and the total harmonic distortion in the 500 kV and 220 kV voltage network is proposed.更多还原