文献类型：期刊文献

英文题名：Load Frequency Control for Micro Hydro Power Plants by Sliding Mode and Model Order Reduction

作者：Qian, Dianwei[1];Tong, Shiwen[2];Liu, Xiangjie[1]

第一作者：Qian, Dianwei

通讯作者：Qian, DW[1]

机构：[1]North China Elect Power Univ, Sch Control & Comp Engn, 2 Beinong Rd, Beijing, Peoples R China;[2]Beijing Union Univ, Coll Automat, Beijing 100101, Peoples R China

第一机构：North China Elect Power Univ, Sch Control & Comp Engn, 2 Beinong Rd, Beijing, Peoples R China

通讯机构：[1]corresponding author), North China Elect Power Univ, Sch Control & Comp Engn, 2 Beinong Rd, Beijing, Peoples R China.

年份：2015

卷号：56

期号：3

起止页码：318-330

外文期刊名：AUTOMATIKA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000368529700008)】；

基金：This work was partly the NSFC Project under grant No.60904008 and the Fundamental Research Funds for the Central Universities under grant No.2015MS29.

语种：英文

外文关键词：Load Frequency Control; Micro Hydro Power Plants; Model Order Reduction; Sliding Mode Control

摘要：Micro hydro is treated as a major renewable energy resource. Such a kind of plants blooms because they can evade some dilemmas like population displacement and environmental problems. But their performance on the frequency index of power systems may be deteriorated in the presence of sudden small load perturbations and parameter uncertainties. To improve the performance, the problem of load frequency control (LFC) raises up. Design of state-based controllers on the aspect of modern control is challenging because only a part of the system states are measurable. This paper addresses the scheme of sliding mode control by model order reduction for the LFC problem of micro hydro power plants. The kind of plants usually has two operating modes, i.e., isolated mode and grid-connected mode. Under each operating mode, mathematical model and model reduction are investigated at first. According to the reduced-order model, a sliding mode control law is subsequently derived. Since the control law is applied to the original system, a sufficient condition about the system stability is proven in light of small gain theory. Simulation results illustrate the feasibility, validity and robustness of the presented scheme.