风电虚拟同步发电机主动调频性能实测验证与优化

相比常规同步发电机,风电机组有功响应与电网频率解耦,不具备主动频率响应能力,给高比例新能源接入电网后的频率稳定带来新挑战。风电经虚拟同步发电机技术改造后具备主动调频能力。该文针对预留备用容量及转子惯性控制两种主动调频控制方式开展现场测试,测试结果表明风电虚拟同步发电机具备有功功率支撑能力。针对现场实测发现的风电虚拟同步发电机退出调频时有功功率跃变、电磁转矩和桨距角协调控制不当等工程应用问题进行闭环优化。

WIND POWER VIRTUAL SYNCHRONOUS GENERATOR ACTIVE FREQUENCY REGULATION PERFORMANCE ENGINEERING VERIFICATION AND OPTIMIZATION

Compared with conventional synchronous generators,wind turbines(WT)active power response and grid frequency are decoupled. WT do not have the ability of active frequency response. New challenges of gird frequency stability occur with high percentage of new energy access. Through virtual synchronous generator(VSG)technology transformation of WT,active frequency regulation ability is possessed. Field tests of reserve capacity and rotor inertia frequency regulation control method are conducted. The results show that WPVSG have ability of active power support. Active power jump when exiting frequency regulation and improper control coordination of electromagnetic torque and pitch angle engineering problems are closed loop optimized.