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Protection and Control of Modern Power Systems
Fig. 6 | Protection and Control of Modern Power Systems

Fig. 6

From: Transient synchronous stability analysis and enhancement control strategy of a PLL-based VSC system during asymmetric grid faults

Fig. 6

a The min (\(T_{{{\text{v}} + }}^{ + }\)) is greater than \(T_{{{\text{v}} + }}^{*}\). b The max (\(T_{{{\text{v}} + }}^{ + }\)) is less than \(T_{{{\text{v}} + }}^{*}\). c The min (\(T_{{{\text{v}}{-}}}^{ - }\)) is greater than \(T_{{{\text{v}}{-}}}^{*}\). d The max (\(T_{{{\text{v}}{-}}}^{ - }\)) is less than \(T_{{{\text{v}}{-}}}^{*}\)

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