针对水轮机调节系统的非线性运动对水轮发电机组稳定性不利的问题,对水轮机调节系统的稳定控制进行研究。首先,基于模糊线性化理论,建立了水轮机调节系统的预测模型;其次,基于该模糊模型,为水轮机调节系统设计了相应的模糊预测控制器;最后,进行了数值仿真验证。结果表明:所设计控制方法有效,超调量较小,过渡时间较短,能使水轮机调节系统稳定运行。该方法可为相关水电站水轮机调节系统的稳定控制提供借鉴。
Abstract
Nonlinear motion of hydro turbine’s governing system (HGS) will lead to unstability of the power units. In order to solve the problem, we study the stability control of HGS. Firstly, we establish a predictive model of HGS via the fuzzy linearization theory. Secondly, we design the fuzzy predictive controller for HGS. Finally, we use numerical simulations to verify the effectiveness of the proposed method. Results show that the method is effective with advantages such as small over-regulation amount and short transitive time, which is in favor of the stability of HGS. Finally, it can be referenced for stability governing of hydropower system in other projects.
关键词
水轮机调节系统 /
稳定性 /
模糊 /
预测模型 /
预测控制
Key words
hydro turbine’s governing system /
stability /
fuzzy /
prediction model /
predictive control
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参考文献
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基金
国家自然科学基金项目(51509210);陕西省水利科技计划项目(2015slkj-11);陕西省科技统筹创新计划(2016KTZDNY-01-01)
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