Dynamic response and governor tuning of a long penstock pumped-storage hydropower plant equipped with a pump-turbine and a doubly fed induction generator
Dynamic response and governor tuning of a long penstock pumped-storage hydropower plant equipped with a pump-turbine and a doubly fed induction generator
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DOI：
10.1016/j.enconman.2015.09.030
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发表时间：
2015-12
影响因子：
10.4
通讯作者：
J. Sarasúa;J. Pérez-Díaz;J. R. Wilhelmi;J. Sánchez-Fernández
中科院分区：
文献类型：
--
作者：
J. Sarasúa;J. Pérez-Díaz;J. R. Wilhelmi;J. Sánchez-Fernández
本文详细分析了单水泵水轮机和双馈感应电机组成的长引水管道抽水蓄能电站在发电工况下的动态响应。抽水蓄能电站与火力发电的小岛屿电力系统相连，在自动发电控制系统的命令下提供负荷频率控制。抽水蓄能电站的输出功率由转子侧变频器控制。机组运行速度由等速PI调速器控制。采用考虑压力钢管弹性水柱效应的线性化降阶动力模型，对抽水蓄能电站进行了动力响应分析。本文提出了两种调速器整定准则：一种是基于被控对象动态模型的根轨迹分析，另一种是基于Pareto方法。建议的调整标准进行比较，彼此和最近公布的调整标准，通过一组常用的性能指标，并通过模拟与非线性动态模型。
In this paper, the dynamic response of a long penstock pumped-storage hydropower plant which is equipped with a single pump-turbine and a doubly-fed induction machine, is analyzed in detail in generating mode. The pumped-storage hydropower plant is connected to a small island power system with thermal generation, and provides load–frequency control under the orders of an automatic generation control system. The output power of the pumped-storage hydropower plant is assumed to be controlled by the rotor-side frequency converter. The unit running speed is controlled by an isochronous PI governor. The dynamic response of the pumped-storage hydropower plant is analyzed by using a linearized reduced order dynamic model, which considers the elastic water column effects in the penstock. Two governor tuning criteria are proposed in the paper: one is devised from the root locus analysis of the plant dynamic model, and the other one is based on a Pareto approach. The proposed tuning criteria are compared with each other and with a recently published tuning criterion through a set of commonly used performance indexes and by means of simulations with a nonlinear dynamic model.