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电网技术  2011 

体现轧机功率需求主动性的周期性冲击负荷模型

, PP. 72-76

Keywords: 冲击负荷,轧机,负荷建模,负荷的主动性

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Abstract:

冲击负荷是引起电力系统功率振荡的重要因素之一。基于电网功率振荡研究的需要,建立了一种能体现轧机功率需求主动性的周期性冲击负荷模型。该模型将异步电机动态模型与轧机实际运行时功率需求的变化规律相结合,在异步电机负载转矩上叠加一个反映轧机负载变化的外部转矩来模拟冲击负荷的主动性和冲击性。利用PSASP用户自定义建模功能,实现了轧机冲击负荷新模型。通过仿真与实测数据对比,证明新模型可用于研究冲击负荷引起的电网功率振荡问题。

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