Emergency Power Control Technology for Wind Power and Photovoltaic Power to Improve New Energy Consumption Capacity

A cluster of renewable energy is formed in China based on UHVDC transmission systems. The renewable energy accommodation is constrained by DC power transmission and grid-connected power of renewable energy. In order to improve the absorption capacity of renewable energy, the fast control characteristics of renewable energy (wind power, photovoltaic) inverters and the necessity of incorporating renewable energy power control into emergency are analyzed. Aiming at the energy equipment control, communication status and active and reactive power control capabilities, the technical requirements of integrating the renewable energy into the communication delay of the emergency control and the real-time sensing of the controllable power are studied. Moreover, based on the actual grid, the effectiveness of the proposed control architecture and control method are verified via the simulation, which can effectively improve the consumption of new energy and maintain grid-connected operation.