The global power system is undergoing a fundamental structural transformation, and the position of new energy in the power supply system is becoming increasingly prominent. For China, the coal-based energy supply system needs to shift to a low-carbon energy system. Vigorously developing new energy technologies such as wind power and solar photovoltaic power generation and accelerating the replacement of clean energy in the power supply system is one of the important tasks of China's energy transformation. However, the randomness and volatility of wind and light resources have a great impact on energy storage power and capacity support capacity. The configuration of energy storage on the new energy side needs to consider the characteristics of new energy output and space-time complementarity, and needs to take into account the indicators in single or multiple application scenarios. This paper will design a hybrid energy storage system based on new energy stations and supercapacitor energy storage, and elaborate the system structure in detail. The dynamic modeling of new energy station abstracts the physical model into mathematical model. Based on the frequency response characteristics of the synchronous motor, the control model of the super capacitor is designed. The improved droop control is used to make the super capacitor energy storage unit have the droop characteristics and the rotor inertia of the traditional synchronous motor, which is conducive to the coordinated control with the new energy unit. It realizes the coordination of new energy units and super capacitors, improves the inertial capacity of the system, and reliably restores the original level after the frequency step change while reducing the frequency change range as much as possible.
No takes yet. Share an insight, caveat, or question.
Li et al. (2024) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: