基于时间触发机制的温控负荷集群综合惯性控制研究OA北大核心CSTPCD

Facing the low-inertia trend of new power systems,large-scale and dispersed thermostatically controlled loads providing virtual inertia and primary frequency regulation support for the power grid will be a new idea to enhance the frequency security of the power grid.So,based on the detailed decomposition of a series of real-time tasks such as sampling,calculation,control and execution in the auxiliary frequency regulation,an asynchronous response mechanism for thermostatically controlled loads that combines event triggering and time triggering is designed.The proposed asynchronous response mechanism achieves the effect that the load cluster power follows the synthetic inertia control law.Subsequently,the frequency response modeling of the power system in which the thermostatically controlled load cluster participates in frequency regulation with the proposed synthetic inertial control is carried out.Further,the improved Routh approximation is used to reduce the order of the frequency response model,thereby obtaining the time-domain analytical expressions of the key features of the system frequency response dynamics.Finally,the effectiveness of the proposed control strategy is verified by case study,and the feasibility of down-order system model using improved Routh approximation is analyzed.