Method for inhibiting line power oscillation of interconnected electric power system via energy storing device
The invention provides a method for inhibiting the line power oscillation of an interconnected electric power system via an energy storing device. The method adopts the power of the line connected with a bus where the energy storing device is as an input signal, obtains an equivalent conductivity th...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
09.02.2011
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a method for inhibiting the line power oscillation of an interconnected electric power system via an energy storing device. The method adopts the power of the line connected with a bus where the energy storing device is as an input signal, obtains an equivalent conductivity through a measurement amplifying link, a stopping link and a phase shifting link, and then obtains an active power instruction value needing to be output by the energy storing device by multiplying the equivalent conductivity by the square of a terminal voltage. A transducer of the energy storing device generates an appointed active power to the power grid through a given power value so as to inhibit the power oscillation of the line. The invention does not depend on a remote communication; the controller has simple and reliable structure and easily adjusted parameters; and a 300MW energy storing device can inhibit a power oscillation with amplitude about 1400MW. |
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Bibliography: | Application Number: CN20101515031 |