水轮机调速器冗余方案探讨与实践

Discussion and Realization of Hydro Turbine Governor's Redundant System

根据大型水轮机调速器的高可靠性要求,探讨了其冗余方案。该冗余方案主要涉及测频、微机调节器、电液转换部件、位移传感器、电源系统等环节。对每个环节的冗余进行了展开分析,对完全并列的热备用冗余和互相交叉的热备用冗余的优缺点进行了比较。根据机组在电网中的不同地位和实现的可行性与必要性,选择采用合适的冗余方式。结合实际应用进一步阐述了冗余方案的配置方法。

The redundant schemes of large turbine governor are discussed according to it＇ s high reliability requirements. The redundant systems are mainly related to the frequency measurement, microcomputer regulator, electro-hydraulic transformer, displacement transducer, power supply system and etc. Redundant systems of each element are analyzed comprehensivelY, and the fully parataxis hot standby redundancy and cross-standby redundancy are compared. Redundant mode can be chosen according to different status of turbines in grid and the feasibility and necessity of realization. Elaborate further the configuration method of redundant schemes combining practical application.