▎ 摘　　要

The effect of charge-carrier drift on the plasmon excitation modes (plasmons) in a Dirac electron liquid in graphene with a displaced Fermi level is considered. The dispersion relations for plasmons are obtained using the electromagnetic approach and hydrodynamic description of the electron liquid. Damped and amplified plasmon eigenmodes are studied numerically depending on the relationship of the magnitudes and directions of the direct electrical current and the plasmon phase velocity.