In the context of carbon peaking and carbon neutrality

various industries in China are flourishing and their dependence on energy is increasing.New clean energy is gradually replacing fossil energy with its clean and pollution- free advantages.However

due to the power fluctuation and intermittency of new energy photovoltaic power generation

and generally working at maximum power

it is unable to provide or absorb additional energy to respond to grid frequency events.At the same time

a large number of new energy and power electronic equipment are connected to the grid

leading to a sharp decline in the system's anti-interference ability.Therefore

in order to solve the above problems

this article uses energy storage devices to suppress the power fluctuations of photovoltaic power generation

improve the utilization rate of solar power generation

and improve the traditional second-order synchronous machine control of inverters.A first-order transient voltage control is introduced to simulate the third-order model of synchronous machines

and a joint active support control strategy for photovoltaic energy storage is proposed to provide better voltage frequency support for the power grid.The superiority of active support for photovoltaic energy storage is verified through simulation.