With development of large-scale renewable energy base built in deserts

Gobi and desertification

the VSC-HVDC has become one of the recommended solutions for large-scale renewable energy long-distance transmission. Therefore

focusing on the stability issues of large-scale renewable energy island transmission systems via VSC-HVDC

this paper analyzes the mechanisms of synchronous stability

energy balance

and wideband oscillation. Novel stability controls are proposed such as coordination control of renewable energy and VSC-HVDC

coordination control of energy-consuming devices

additional damping control

and impedance adapter. Through electromagnetic transient simulation

it is verified that the proposed stability control method can be adopted to effectively ensure the stable operation of large-scale new energy via VSC-HVDC transmission system

which has certain reference value for the construction and operation of large-scale new energy via VSC-HVDC transmission system.