Abstract: To improve the automatic generation control (AGC) and automatic voltage control (AVC) performance of new energy power stations and enhance system operational stability, this paper analyzes issues encountered during AGC and AVC testing at renewable energy stations in Yunnan, including slow data refresh rates, delayed response in wind farm regulation, difficulties in coordinating primary frequency regulation with AGC, inaccurate theoretical power calculations for photovoltaic plants, and low power factors after AVC activation. Practical case studies demonstrate that reducing the deadband for telemetry data transmission in monitoring devices can partially address slow data refresh issues; an integrated control system combining AGC, AVC, and primary frequency regulation facilitates coordinated control between AGC and primary frequency regulation; and appropriately setting voltage adjustment coefficients can mitigate some AVC voltage overshoot problems. Additionally, this paper proposes optimization suggestions such as enabling direct communication between AGC/AVC substations and turbine monitoring systems to improve regulation response speed, establishing an independent theoretical power calculation system to enhance accuracy for photovoltaic plants, and using power factor as a blocking condition for AVC.