当电力系统出现功率缺额时，如果只靠负荷调节效应进行补偿，系统的稳定频率为47Hz，此时若通过减负荷装置动作切除一部分负荷，系统的稳定频率（）。_电力系统_全学科试题题库

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题目：单选
当电力系统出现功率缺额时，如果只靠负荷调节效应进行补偿，系统的稳定频率为47Hz，此时若通过减负荷装置动作切除一部分负荷，系统的稳定频率（）。
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