Temperature control load participated electric power system primary frequency modulation method based on double-layer control

Abstract

The invention relates to a temperature control load participated electric power system primary frequency modulation method based on double-layer control. The method is characterized in that in the upper layer, each temperature control load aggregator is regarded as a virtual generator set; a virtual droop coefficient changing in real time is constructed, the variable droop coefficient can adjust power distribution according to the real-time adjusting capacity of the aggregators, the adjusting power of each aggregator is within the adjusting capacity of the aggregator, a dispatching center distributes power deviation values to a traditional unit and each load aggregator accordingly, and the frequency modulation effect is effectively improved; the participation degree autonomously selected by the user is designed at the load end of the lower layer, and the loads are sorted according to a temperature priority list method, so that the switching frequency of the loads is effectively reduced, and the loss of equipment caused by frequent starting and stopping of the loads is reduced. The technical scheme of the method is feasible, the temperature control load can be effectively controlledon the premise that the comfort degree of a user is guaranteed, the frequency quality of a power system is improved, and the application value is high.

Description

technical field [0001] The invention relates to the technical field of power system frequency regulation, and relates to a method for temperature-controlled loads based on double-layer control to participate in the primary frequency regulation of the power system. Background technique [0002] The existing primary frequency regulation is mainly completed by the generator set, but due to the inherent characteristics of the unit, the response speed of the frequency regulation is slow, and frequent increases and decreases in output will not only cause wear and tear on the unit, but also increase coal consumption. In addition, in the face of a large amount of frequency regulation demand caused by the access of new energy sources, increasing the frequency regulation capacity simply by increasing the unit capacity will significantly increase the operating cost, which is not economical. Therefore, it is necessary to find a new way of frequency modulation as a supplement to the supp...

AI Technical Summary

Problems solved by technology

However, due to the wide distribution of temperature-controlled loads, the dispatch center needs to process a large amount of information in frequency regulation control, which is difficult to control. When temperature-controlled loads participate in frequency regulation, it is necessary to ensure the comfort of users, and the willingness of users to participate in frequency regulation should be considered as much as possible. , reduce the loss of equipment caused by frequent switching loads

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