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美国北加州电力局对Collierville电站的两台252MW冲击式水轮机的控制系统进行了升级改造,降低了输出负载摆动(老控制系统的负载摆动是10～12MW,升级改造后小于1MW)。
The Northern California Electricity Authority upgraded the control system of two 252MW percussive turbines at the Collierville Power Station, reducing the output load swing (10-12 MW for the old control system and less than 1 MW for the upgrade).