Abstract
The primary frequency modulation function of generating units is an important means to maintain the frequency stability of the power grid. The reasonable assessment criteria help to regulate the primary frequency modulation performance of generating units and enhance the enthusiasm of units to participate in frequency modulation auxiliary services. On the basis of mastering primary frequency modulation principle, the response characteristics of the electro-hydraulic governor and the turbine under frequency excursion are analysed in detail. Aiming at the shortcoming of the current primary frequency modulation evaluation standard, an integral electricity algorithm with different weights added according to the contribution of primary frequency modulation is proposed. Finally, based on the concrete example, the correctness and rationality of the improved method are verified.
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