排灌机械工程学报2025，Vol.43Issue(7)：716-723,739,9.DOI:10.3969/j.issn.1674-8530.24.0229
高比例水电机组调频关键参数测试及自适应优化
Testing and adaptive optimization of key parameters for frequency control of high ratio hydroelectric power units
摘要
Abstract
Yunnan power grid has significant frequency stability problems due to the high proportion of hydropower.The inherent weak damping characteristics of hydropower units associated with water hammer effect is one of the main reasons.At present,the governor PID parameters setting is mainly based on the maximum security domain of water flow inertia time coefficient Tw design value.As a re-sult of a substantial increase in primary frequency,and the frequency modulation support capability has not been utilized when the load of the power grid changes.To address this issue,the connotation of Tw parameter characteristics and its engineering measurement methods were researched.The change law of Tw under different head and different working conditions were explained.Based on the measured re-sults,the optimization strategy of governor PID parameters and the program implementation method were designed.With a damping ratio of 0.05 as the objective,the parameter adaptive optimization is carried out in load segments using the parameter optimization search method of sensitivity analysis.The unit frequency is able to maximize the capacity while providing positive damping.The limitations in the design of current frequency parameter and control modes are solved,and the frequency modulation rate and frequency modulation demand capacity in some load segments are significantly improved,which is of great significance to the construction of new power system and new energy consumption.关键词
水电机组/PID参数/水流惯性时间系数/一次调频/优化策略Key words
hydropower units/PID parameters/water flow inertia time factor/primary frequency modulation/optimization strategy分类
农业科技引用本文复制引用
何常胜,曾丕江,曾云,王浩,万雄彪,韩冬冬,冯丽娟,何建宇..高比例水电机组调频关键参数测试及自适应优化[J].排灌机械工程学报,2025,43(7):716-723,739,9.基金项目
国家自然科学基金资助项目(52479084) （52479084）
中国南方电网有限责任公司重点科技项目(YNKJXM20220025) （YNKJXM20220025）
