Electrical substation
First Claim
1. A substation of a long distance, megawatt power transmission and distribution network, comprising:
- a) a single phase isolating high frequency high kilovolt transformer having at least one input primary winding coupled through a circuit breaker to a long distance, megawatt power distribution line and at least one output secondary winding;
b) an input solid state high frequency high kilovolt switching network comprising a plurality of semiconductor switching devices, the input switching network defining at least one input node for receiving an input power waveform from the transmission network and at least one output node connected to the at least one primary winding of the transformer;
c) at least one output solid state high frequency high kilovolt switching network comprising a plurality of semiconductor switching devices, the output switching network being connected to the at least one secondary winding of the transformer and defining at least one output node from which an output power waveform is taken from the substation; and
d) control means for controlling the switching devices of the input and output switching networks to generate the output power waveform at the at least one output node from the input power waveform applied to the at least one input node.
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Abstract
A substation is disclosed for use in a power transmission and distribution network. The substation comprises a single phase isolating high frequency transformer having at least one input winding and at least one output winding with corresponding input and output solid state switching networks. Each input solid state switching network comprises a plurality of semiconductor switching devices which receive an input waveform from the transmission network and output a high frequency waveform to the primary winding of the transformer. Likewise, each output solid state switching network comprises a plurality of semiconductor switching devices receiving a high frequency waveform from the secondary winding of the transformer and outputting an output frequency waveform from the substation. A control circuit is adapted to control the operation of the switching devices of the input and output switching networks to generate the output waveform from the input waveform.
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Citations
14 Claims
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1. A substation of a long distance, megawatt power transmission and distribution network, comprising:
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a) a single phase isolating high frequency high kilovolt transformer having at least one input primary winding coupled through a circuit breaker to a long distance, megawatt power distribution line and at least one output secondary winding;
b) an input solid state high frequency high kilovolt switching network comprising a plurality of semiconductor switching devices, the input switching network defining at least one input node for receiving an input power waveform from the transmission network and at least one output node connected to the at least one primary winding of the transformer;
c) at least one output solid state high frequency high kilovolt switching network comprising a plurality of semiconductor switching devices, the output switching network being connected to the at least one secondary winding of the transformer and defining at least one output node from which an output power waveform is taken from the substation; and
d) control means for controlling the switching devices of the input and output switching networks to generate the output power waveform at the at least one output node from the input power waveform applied to the at least one input node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A long distance, megawatt power transmission and distribution network, comprising:
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a) a long distance, megawatt power transmission line for the transmission of electrical power from a generator;
b) a substation comprising;
i) a single phase isolating high frequency high kilovolt transformer having at least one input primary winding coupled through a circuit breaker to the long distance, megawatt power transmission line and at least one output secondary winding, ii) an input solid state high frequency high kilovolt switching network comprising a plurality of semiconductor switching devices, the input switching network defining at least one input node for receiving an input power waveform from the transmission network and at least one output node connected to the at least one primary winding of the transformer, iii) at least one output solid state high frequency high kilovolt switching network comprising a plurality of semiconductor switching devices, the output switching network being connected to the at least one secondary winding of the transformer and defining at least one output node from which an output power waveform is taken from the substation, iv) control means for controlling the switching devices of the input and output switching networks to generate the output power waveform at the at least one output node from the input power waveform applied to the at least one input node, v) the substation being operatively connected to the transmission line; and
c) at least one distribution line connected to an output of the substation for onward supply of power to a load. - View Dependent Claims (12, 13, 14)
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Specification