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    • 1. 发明授权
    • Method and apparatus for determining orders of non-characteristic
harmonic currents, and for compensation of the noncharacteristic
harmonic currents
    • 用于确定非特征谐波电流的次数以及非特性谐波电流补偿的方法和装置
    • US5780939A
    • 1998-07-14
    • US446654
    • 1995-05-26
    • Norbert ChristlPeter LutzelbergerKadry Sadek
    • Norbert ChristlPeter LutzelbergerKadry Sadek
    • H02J3/01H02J3/36H02J1/02
    • H02J3/01H02J3/36Y02E40/40Y02E60/60Y10T307/68
    • A method and an apparatus can determine the orders (z) of non-characteristic harmonic currents (Ih) of a second power supply grid, which is coupled to a first power supply grid using an HVDCT system. The apparatus and method also compensates for these non-characteristic harmonic currents (Ih), which are produced as a result of distortion (Uh) of the supply voltage (U1) which exists in the first grid because of a low-frequency harmonic and passes through the short coupling. The order (n) of the existing non-characteristic harmonics is determined by a voltage and/or current measurement of the voltage (U1) of the grid, from which order (n) the order (z) of the generated non-characteristic harmonics in the second grid is determined by a provided voltage-symmetry signal (SMG). This order (z) is supplied to filter logic of a compensation system. The energy quality is thus considerably improved, particularly in the case of grids which are not rigid.
    • PCT No.PCT / DE92 / 01063 Sec。 371日期:1995年5月26日 102(e)日期1995年5月26日PCT提交1992年12月10日PCT公布。 出版物WO94 / 14220 PCT 日期1994年6月23日一种方法和设备可以确定使用HVDCT系统耦合到第一电源网格的第二电源电网的非特征谐波电流(Ih)的阶数(z)。 该装置和方法还补偿这些非特征谐波电流(Ih),其由于低频谐波并且通过而存在于第一电网中的电源电压(U1)的失真(Uh)的结果而产生 通过短耦合。 现有非特性谐波的阶数(n)由电网电压(U1)的电压和/或电流测量值决定,从其产生的非特征谐波的阶数(n)为阶数(z) 在第二格栅中由提供的电压对称信号(SMG)确定。 该顺序(z)被提供给补偿系统的过滤器逻辑。 因此,能量质量得到显着改善,特别是在不刚性的网格的情况下。