China News Agency, Xining, September 12 (Sun Rui Yang Fahu) China State Power Investment Corporation Yellow River Upstream Hydropower Development Co., Ltd. (referred to as "Yellow River Company") told a reporter from China News Agency on the 12th that the company is responsible for the construction of the world's first photovoltaic , Energy storage outdoor demonstration experiment platform - National Photovoltaic, Energy Storage Demonstration Experimental Platform (Daqing Base) Energy Storage System Demonstration Experimental Area The primary frequency regulation system was officially connected to the grid. This is also the first power side primary frequency regulation system in China to be connected to the grid It is a major breakthrough that China's new energy has a frequency modulation function.
According to reports, with the increase in the proportion of new energy grid-connected, new energy power generation lacks rotational inertia support when coping with grid frequency fluctuations, and it is difficult to achieve a successful frequency regulation.
The primary frequency modulation active support capability of new energy stations has become a common problem faced by the new energy power generation industry.
In order to realize the primary frequency regulation function at a high standard, improve the frequency regulation characteristics of new energy, and improve the stability of the power grid under the access of a high proportion of new energy, the National Photovoltaic Energy Storage and Demonstration Experimental Platform has carried out research work on primary frequency regulation technology based on power energy storage equipment.
And by configuring the appropriate primary frequency regulation control device, energy storage equipment and fast communication network, the new energy station can effectively suppress the high and low frequency disturbance of new energy power generation, and finally the primary frequency regulation system of the photovoltaic station successfully passed various tests. , successfully connected to the grid, achieving a "zero" breakthrough in the power-type energy storage equipment supporting the primary frequency modulation and grid connection of photovoltaic stations, and becoming the only flywheel, lithium titanate and Supercapacitor energy storage device.
The Yellow River Company said that the official grid-connected operation of the photovoltaic primary frequency modulation system of the National Photovoltaic and Energy Storage Demonstration Experiment Platform (Daqing Base) is a historic breakthrough in the primary frequency modulation technology of photovoltaic power plants based on power-type energy storage equipment in China, and it is also a milestone for the use of flywheels. Energy storage equipment represented by energy storage technologies such as lithium batteries and supercapacitors participated in the primary frequency regulation of new energy stations, providing powerful empirical test data and application cases.
After the grid-connected operation of the primary frequency modulation system of the base, more relevant empirical test data will be obtained, which will provide a scientific basis for the country to formulate industrial policies and technical standards.
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