发明名称 |
Method and means for damping subsynchronous oscillations and DC offset in an AC power system |
摘要 |
Subsynchronous oscillations and DC offset in an electrical power system are dampened by measuring the half-cycle period of current or voltage line waves, comparing the measured half-cycle time periods to a desired half-cycle time period and dissipating the line waves in measured half-cycle time periods which are longer than the desired half-cycle time period. Damping apparatus includes a reactance connected in a power line with selectively bi-directional conductors in parallel with the reactance whereby the reactance can be shorted. Alternatively, the selectively bi-directional conductors can connect a power line to ground or neutral when half-cycle time periods exceed a desired half-cycle time period.
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申请公布号 |
US4292545(A) |
申请公布日期 |
1981.09.29 |
申请号 |
US19790059994 |
申请日期 |
1979.07.23 |
申请人 |
ELECTRIC POWER RESEARCH INSTITUTE, INC. |
发明人 |
HINGORANI, NARAIN G. |
分类号 |
H02J3/18;H02J3/24;(IPC1-7):G05F1/12 |
主分类号 |
H02J3/18 |
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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