金安桥水电站机组调速器参数改进在云南异步联网中的应用与研究

The Application of the Asynchronous Interconnection and Research of Jin’anqiao Hydropower Unit of Governor Parameters Improvement

针对云南电网在异步联网期间,在系统小扰动试验情况下,电网频率出现小幅度的波动状况。经南网总调分析,金安桥电厂以及参与异步联网的其它电厂的调速系统可能存在负阻尼现象,需修改一次调频控制器参数,优化后的调速器模型为云南异步联网试验顺利完成打下了良好的基础。

In view of the Yunnan power grid during asynchronous interconnection, the frequency of power grid has a small fluctuation in the condition of small disturbance test system. After south power network analysis, there possibly may exist negative damping phenomenon in the speed regulation system of Jin’anqiao power plant as well as other power plant involved in asynchronous networking and it needs to modify frequency modulation controller parameters. The optimized speed governor model test completed in Yunnan asynchronous networking has laid a good foundation.