Frequency construction method and system of converter type power grid

The invention relates to a frequency construction method and system for a converter type power grid, and the method comprises the steps: determining a control mode of power grid construction type converters according to the number of the power grid construction type converters and the communication configuration condition between the converters, employing a fixed frequency control mode under the condition of a single converter, and employing a coordinated control mode under the condition of multiple converters; and determining the frequency operation mode of the ultrahigh-proportion new energy power grid according to the control mode of the power grid construction type current converter. The converter determines the frequency of the power grid, and the frequency construction method can be used for frequency construction and operation control of converter type power grids such as ultrahigh-proportion and even full-renewable-energy-source large power grids, regional power grids and micro-grids. 本发明涉及一种换流器型电网的频率