提升水轮机调速器机网协调能力的技术研究  

Technical study on improvement of generator-grid coordination capability of turbine governor

作　　者：蔡卫江 CAI Wei-jiang(NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China)

机构地区：[1]南瑞集团(国网电力科学研究院)有限公司,江苏南京211106

出　　处：《水电站机电技术》2019年第3期59-62,97,共5页Mechanical & Electrical Technique of Hydropower Station

摘　　要：针对近期我国电网结构发生的变化,如水电占比过高,直流输电带来的异步联网方式,西藏等"大机小网"运行工况等,给电网带来的安全稳定问题,提出了水轮机调速器侧的控制策略,包括调速器控制模式改进,调速系统参数优化,水锤效应的抑制和改善,调速器附加GPSS控制等,以及现场部分试验及测试情况。拟通过对水轮机调速控制策略的改进和技术升级,提升水电机组调速器机网协调能力,支撑整个电力系统的安全稳定。In view of safety and stability problems brought about by recent changes in China’s power grid structure, such as over-high proportion of hydropower, asynchronous grid interconnection resulting from DC transmission, and the operation condition of "a small power system containing large-capacity generators" in Tibet and other areas, this paper proposes control strategies for turbine governor, including improvement of governor control mode, optimization of governor system parameters, inhibition and improvement of water hammer effect, additional GPSS control of governor, and some field tests. It is proposed to improve the generator-grid coordination capability of governor of hydrogenerator unit through improvement of turbine governing control strategy and technological upgrading, thereby supporting the safety and stability of an entire electric power system.

关 键 词：水锤效应 控制模式 参数优化 调速器GPSS 柔性关闭 

分 类 号：TM312[电气工程—电机]