| 引用本文: | 陈金保,任 刚,丁萁琦,等.孤网模式下基于HBBC的水轮机调节系统稳定性量化分析方法研究[J].电力系统保护与控制,2023,51(13):60-69.[点击复制] |
| CHEN Jinbao
,REN Gang,DING Qiqi,et al.Study on a quantitative stability analysis method of a hydraulic turbine regulating systembased on HBBC in frequency control mode[J].Power System Protection and Control,2023,51(13):60-69[点击复制] |
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| 摘要: |
| 针对目前孤网模式下水轮机调节系统(hydraulic turbine regulating system, HTRS)稳定性研究方法忽略水轮机非线性的问题，结合Hopf分岔理论、二分法和稳定性判据，提出了一种考虑水轮机非线性的控制器参数约束确定算法(controller parameter constraint determination algorithm based on Hopf bifurcation theory, bisection method and stability criterion, HBBC)，以实现对孤网模式下非线性水轮机调节系统的全工况稳定性分析。首先搭建了孤网模式下含非线性水轮机模型的高精度HTRS数值仿真平台，然后详细介绍了基于HBBC的稳定域约束定量计算过程。最后以某实际水电站为例，基于HBBC计算了孤网模式下非线性HTRS全工况下的稳定域，并在特殊工况下对稳定域计算结果进行了验证。结果表明，在HTRS稳定性分析中，HBBC可取代传统的稳定域计算方法，在准确性和可靠性方面优于后者；HTRS存在稳定域较小的“恶劣工况点”。 |
| 关键词: 水电机组 孤网模式 Hopf分岔 神经网络 二分法 |
| DOI：10.19783/j.cnki.pspc.221796 |
| 投稿时间：2022-11-11修订日期：2023-01-04 |
| 基金项目:国家自然科学基金项目资助(51979204，52009096)；中央高校基本科研业务费专项资金资助(2042022kf1022)；中国博士后科学基金项目资助(2022T150498) |
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| Study on a quantitative stability analysis method of a hydraulic turbine regulating systembased on HBBC in frequency control mode |
| CHEN Jinbao
1,2,REN Gang3,DING Qiqi3,ZOU Yidong1,2,ZHENG Yang1,XIAO Zhihuai1,2 |
| (1. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China; 2. Key Laboratory of
Hydraulic Machinery Transients, Ministry of Education, Wuhan University, Wuhan, 430072, China
3. Xiluodu Hydropower Plant, China Yangtze Power Co., Ltd., Yongshan 657300, China) |
| Abstract: |
| Aiming at the fact that the current stability research methods of hydraulic turbine regulating system (HTRS) under frequency control mode (FCM) ignore hydro-turbine nonlinearity, a controller parameter constraint determination algorithm (HBBC) considering hydro-turbine nonlinearity is proposed. This is done by combining Hopf bifurcation theory, and a bisection method and stability criterion, to realize the stability analysis of the nonlinear HTRS of all operating conditions in FCM. First, a high-precision nonlinear HTRS numerical simulation platform containing a nonlinear hydro-turbine model is built in FCM. Then a quantitative calculation process of stability region constraints based on HBBC is introduced in detail. Finally, taking an actual hydropower station as an example, the stability region of nonlinear HTRS of all operating conditions in FCM is calculated based on HBBC. The calculation results of the stability region in special operating conditions are verified. The results show that HBBC can replace the traditional stability region calculation method in HTRS stability analysis, and is superior in accuracy and reliability; HTRS has some "bad operating conditions" with the small stability region. |
| Key words: hydropower unit frequency control mode Hopf bifurcation neural network bisection method |
