第 51 卷 第 13 期 电力系统保护与控制 Vol.51 No.13
2023 年 7 月 1 日 Power System Protection and Control Jul. 1, 2023
DOI: 10.19783/j.cnki.pspc.221796
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
陈金保 1,2,任 刚 3
,丁萁琦 3
,邹屹东 1,2,郑 阳 1
,肖志怀 1,2
(1.武汉大学动力与机械学院,湖北 武汉 430072;2.武汉大学水力机械过渡过程教育部重点实验室,
湖北 武汉 430072;3.中国长江电力股份有限公司溪洛渡水力发电厂,云南 永善 657300)
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
Study on a quantitative stability analysis method of a hydraulic turbine regulating system
based on HBBC in frequency control mode
CHEN Jinbao1, 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.
This work is supported by the National Natural Science Foundation of China (No. 51979204 and No. 52009096).
Key words: hydropower unit; frequency control mode; Hopf bifurcation; neural network; bisection method
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)