Research on the Cascade Utilization Framework of Large-scale Power Battery Considering the Transient Stability Regulation of Power Grid

The global low-carbon development goal objectively requires the transformation and upgrading of the entire energy structure chain as soon as possible. On the consumer side, my country’s electric vehicle industry has achieved rapid development, which has promoted great progress in the electrochemical energy storage and power battery industries. At present, further improving the performance of power batteries and paying attention to their full life cycle utilization has become the key; on the production side, relying on special In the high-voltage power grid, new energy has achieved large-scale transmission and utilization, providing clean power for the consumer, but at the same time, the inertia of the power grid is reduced, and the difficulty of frequency and voltage regulation has become a new challenge. This paper takes the effective utilization of energy resources as the starting point, considers production-consumer needs and contradictions, sorts out the performance indicators of the power battery body and the frequency modulation requirements of the new energy transmission-end power grid, studies the frequency adjustment characteristics of large-scale power batteries, and proposes based on the death The primary frequency modulation coordination strategy of district control, taking the Northeast Power Grid Lugu DC Blocking as an example, verifies the effectiveness of the proposed strategy; at the same time, taking the economic and technical dimensions as the starting point, build a large-scale participation in grid transient stability regulation The power battery cascade utilization framework clarifies the advantageous technical scenarios of large-scale power batteries participating in grid operation and regulation, improves the economy of the cycle technology chain, and provides a reference for large-scale power battery cascade utilization and grid safety and stability coordinated control.