KEYWORDS: Frequency modulation, Power grids, Modulation frequency, Frequency response, Turbines, Standards development, Power supplies, Nuclear power plants, Lithium
Primary frequency modulation (PFM) is an important means to maintain the stability of the power grid, especially in the booming development of new energy, the performance of PFM has increased in all provinces. This paper mainly analyzes the differences between the national standard acceptance guidelines and the two detailed rules of Shandong province. In the initial stage of response, the two detailed rules have higher requirements for the unit. In order to cater to this characteristic of Shandong power grid, the generating unit must increase its contribution in the initial stage of disturbance. Through the analysis, this paper puts forward the direction of increasing the power contribution of the unit.
After the promotion of primary frequency modulation remote test, the network source platform will conduct test regularly every month and analyze the unqualified test. This paper focuses on the phenomenon of unqualified primary frequency modulation test, infers the causes of unqualified primary frequency modulation test, and divides five kinds of problems according to the causes: poor control and regulation quality, slow DEH response, insufficient unit regulation margin, influence of operation mode and poor flow characteristics of regulating valve. This paper gives the corresponding qualitative solutions to the five types of problems.
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