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A method of locating enhancements for improving voltage stability security of an electric power transmission system having a plurality of buses and a plurality of sources of reactive reserves coupled thereto. The plurality of buses are grouped into a plurality of voltage control areas such that each

A method of locating enhancements for improving voltage stability security of an electric power transmission system having a plurality of buses and a plurality of sources of reactive reserves coupled thereto. The plurality of buses are grouped into a plurality of voltage control areas such that each of the buses within each voltage control area has a similar corresponding reactive power versus voltage relationship. A first voltage control area is determined for locating a first enhancement, wherein the first voltage control area exhibits therein a difference in internal reactive loss that exceeds a loss threshold. A second voltage control area is determined for locating a second enhancement, wherein the second voltage control area exhibits therein a difference in reactive reserves that exceeds a reactive reserve threshold. The first and second enhancements may include switchable shunt capacitors, synchronous voltage condensers, static var compensators, or a combination thereof. A third enhancement, which includes series capacitors, parallel lines, or a combination thereof, is located at interfaces between two neighboring voltage control areas determined to exhibit thereacross a difference in either reactive power flow or reactive power loss that exceeds a predetermined threshold.

대표청구항 ▼

A method of enhancing voltage stability in a region of an electric power transmission system having a plurality of buses and a plurality of sources of reactive reserves coupled thereto, the method comprising: grouping the plurality of buses into a plurality of voltage control areas such that each of

A method of enhancing voltage stability in a region of an electric power transmission system having a plurality of buses and a plurality of sources of reactive reserves coupled thereto, the method comprising: grouping the plurality of buses into a plurality of voltage control areas such that each of the buses within each voltage control area has a similar corresponding reactive power versus voltage relationship; determining at least one interface between two neighboring voltage control areas which exhibits thereacross a difference in reactive power flow, between a first operating condition and a second operating condition of the power system, that exceeds a reactive flow threshold; and locating at least one enhancement at the at least one interface to improve voltage stability.