发明名称 |
PROCESS AND DEVICE FOR DETERMINING THE ORDINAL NUMBERS OF NON-CHARACTERISTIC HARMONIC CURRENTS AND FOR COMPENSATING THE SAME |
摘要 |
<p>PCT No. PCT/DE92/01063 Sec. 371 Date May 26, 1995 Sec. 102(e) Date May 26, 1995 PCT Filed Dec. 10, 1992 PCT Pub. No. WO94/14220 PCT Pub. Date Jun. 23, 1994A 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.</p> |
申请公布号 |
EP0673556(B1) |
申请公布日期 |
1996.06.12 |
申请号 |
EP19930901594 |
申请日期 |
1992.12.10 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
CHRISTL, NORBERT;LUETZELBERGER, PETER;SADEK, KADRY |
分类号 |
H02J3/01;H02J3/36;(IPC1-7):H02J3/36 |
主分类号 |
H02J3/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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