冲击式水电机组孤网调节特性仿真与试验  

Simulation and Field Test of Regulation Characteristics of Impulse Hydroelectric Units in Isolated Grid

作　　者：宋登峰 蔡天富[2] 何常胜 普碧才 王浩 SONG Dengfeng;CAI Tianfu;HE Changsheng;PU Bicai;WANG Hao(Nujiang Power Supply Bureau of Yunnan Power Grid Co.,Ltd,Nujiang 673199,China;School of Power and Mechanical E ngineering,Wuhan University,Wuhan 430072,China;Yunnan Electric Power Testing and Research Institute(Group)Co.Ltd.,Kunming 650217,China)

机构地区：[1]云南电网有限责任公司怒江供电局,云南省怒江州673199 [2]武汉大学动力与机械学院,湖北省武汉市430072 [3]云南电力试验研究院(集团)有限公司,云南省昆明市650217

出　　处：《水电与抽水蓄能》2024年第4期74-78,88,共6页Hydropower and Pumped Storage

基　　金：云南电网有限责任公司科技项目“高比例冲击式小水电机组区域电网频率控制研究及示范应用”(051600KC23020001)。

摘　　要：水电机组由于多种原因可能进入孤网运行模式,保证孤网运行的稳定性是保障供电和加快电网恢复的重要前提。为有效地开展冲击式水轮机调速系统的调节特性和控制策略研究,本文建立了冲击式水电机组调节系统分析数学模型,仿真分析了孤网下小负荷扰动与大负荷扰动的冲击式水电机组调节特性,通过突甩负荷仿真验证了不同折向器投退策略的效果,并开展了冲击式水电机组孤网调节的现场试验,验证了本文所述数学模型的正确性。合适的折向器投入与退出频率设置和合理的调速器的控制参数是保障孤网运行稳定性的重要保障。Due to various reasons,hydroelectric units may enter isolated grid operation mode,ensuring the stability of isolated grid operation is an important prerequisite for ensuring power supply and accelerating grid recovery.In order to effectively carry out research on the regulation characteristics and control strategies of the impulse turbine speed regulation system,this paper establishes a mathematical model for the analysis of the governing system for impulse hydroelectric units.The regulation characteristics of impulse hydroelectric units under small load disturbance and large load disturbance in isolated grid are simulated.The effect of different switching strategies of the deflector is verified through sudden load rejection simulation,and on-site experiments on the isolated grid regulation of impulse hydroelectric units are carried out.The correctness of the mathematical model described in this article has been verified,and appropriate frequency settings for the deflector switch on or switch off,as well as reasonable control parameters for the governor,are important guarantees for ensuring the stability of isolated grid operation.

关 键 词：冲击式水轮机 孤网运行 调速器 折向器控制 控制参数 

分 类 号：TV737[水利工程—水利水电工程]