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具有调压井的引水系统小波动稳定问题是决定调压井断面的一个重要因素.在这方面已做了许多工作,其中最著名的是确定单一调压井临界稳定断面的托马公式.但托马采用的数学模型未包含水轮机特性和调速器的因素.此外,又如对双调压井系统,使用该模型不能被引伸应用. 本文建立一个包括引水系统、水轮发电机组和调速系统简单实用的数学模型,并据此分析调速器参数整定对调压井临界稳定断面的影响.
Small fluctuations in the stability of the diversion system with surge shafts are an important factor in determining the surge shaft section, and much work has been done in this regard, most notably the Toma formula to determine the critical stable section of a single surge shaft. The mathematical model used by Toma does not include the characteristics of turbine and governor.In addition, the model can not be extended to be applied to double surge shaft system.In this paper, a model including water diversion system, hydrogenerator and speed governor The system is simple and practical mathematical model, and accordingly analyze the governor parameter setting on the critical stability of the surge shaft section.