同期化トルクによる定態安定度の解析

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The authors have named dTe/dδ synchronizing torque and have shown a step-out discriminant by using this, where Te is the torque generated by a synchronous generator. Next, we have introduced a measurement method of the synchronizing torque based on the measurement of Tm-δ characteristics, where Tm is the torque generated by a prime mover. By using this method, we have proved that a step-out occurs where synchronizing torque has become zero. We have measured the magnitude of the inverse frequency transfer function in 0.1Hz, that is the synchronizing torque considering the hysteresis of Tm-δ characteristics. Next, we have deduced the synchronizing torque formula considering the nonlinear magnetic phenomena. Differential constants xd*, xq* are necessary to obtain the synchronizing torque calculated values related to the synchronizing torque measurement values based on the measurement of Tm-δ characteristics. Incremental constants _??_d, _??_q, are necessary to obtain the calculated values related to the synchronizing torque measurement values based on the inverse vector locus measurement method. Both constants agree in the ordinary region, so both calculated values agree. As _??_q is less than xq* in the neighborhood of the steadystate stability limit, the calculated value based on the incremental constants is greater than the calculated value based on the diffarential constants. And, the calculated values almost have agreed with the measured values. Finally, we have predicted a steady-state stability limit by the synchronizing torque calculated values using diffarential constants, which limit substantially has agreed with actual limit.
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同期化トルクによる定態安定度の解析

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