Building a new type of power system with new energy as the main body is of great significance for improving energy structure, improving system operation efficiency, increasing economic benefits, and reducing pollution emissions. Multi terminal DC transmission based on voltage source converter is the best transmission method for large-scale new energy grid connection and consumption. But there are also a series of challenges, such as weak anti-interference, reduced inertia, and high uncertainty. These challenges have led to a decrease in system inertia and increasingly prominent frequency security issues, with frequent frequency security incidents occurring both domestically and internationally in recent years. It can be seen that frequency safety has become a bottleneck issue for the safe and stable operation of new power systems.

In order to address frequency safety risks, traditional control methods mainly include measures such as generator frequency regulation and low-frequency load shedding, which present a problem of insufficient frequency regulation methods in new power systems. Therefore, exploring new theories and technologies and implementing interactive control of frequency modulation resources from sources, loads, storage, and other aspects has important theoretical significance and practical value for ensuring frequency safety in the power system, promoting industry technological progress, and ensuring social and economic development. Special acceptance of research papers and research reviews.

Scope of special solicitation (including but not limited to)

(1) Modeling of frequency safety in a new type of power system with multi terminal flexible DC transmission;

(2) Mechanism analysis and quantitative evaluation of the inertia of a new power system with multi terminal flexible DC transmission;

(3) Evaluation indicators and analysis of frequency safety for new power systems with multi terminal flexible DC transmission;

(4) Power side control for frequency safety in a new power system with multi terminal flexible DC transmission;

(5) Load side control for frequency safety in new power systems with multi terminal flexible DC transmission;

(6) Energy storage side control for frequency safety in a new power system with multi terminal flexible DC transmission;

(7) Collaborative control of frequency safety in a new power system with multi terminal flexible DC transmission.