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Effect of the Coupling Between Hydraulic Turbine Set and Power Grid on Power Grid Dynamic Stability
Pages: 166-170,177
Year: Issue:  9
Journal: Transactions of China Electrotechnical Society

Abstract: 电网多次发生水轮机组参与的功率低频振荡现象,产生机理不明,严重影响电网的安全稳定运行.本文以江西柘林水电厂为例,首先分析其水轮机组尾水管水压脉动情况以及对输出机械功率的影响,其次根据尾水管水力系统物理特性,建立考虑尾水管压力动态的水轮机组模型.采用时域仿真方法,探讨了水轮机组水力系统与电网之间的耦合作用,研究了水轮机组尾水管水压脉动对电网动态安全稳定的影响.仿真结果表明:当水轮机组尾水管水压脉动频...
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