Research on Frequency Conversion Transformation for Feed Pump Motors of Gas Turbine Units
Gas turbine units need to be frequently started and stopped for peak regulation in power grid operation.The feed pump motors,which operate at power frequency,are prone to end breakage accidents in the starting moment due to frequent starting and stopping.By studying the operating characteristics of feed pumps and the resistance characteristics of feed water pipes,the regu-lation mode of feed water flow is changed from outlet valve regulation to variable speed regulation of feed pump,and the opera-tion mode of the motor is changed from the power frequency mode to a more flexible variable frequency mode.The safety benefit evaluation and economic benefit evaluation are conducted for the specific frequency conversion transformation scheme,and the re-sults indicate that the scheme can improve the safety and economy of unit operation.
NETL
NSTL
万方数据
维普
