摘要：Due to the increasing amount of photovoltaic (PV)-based power generation being connected to power systems, issues pertaining to the integration of the PV-based generators have attracted intense attention. In this connection, the design of a PV-based stabilizer for enhancing power system dynamic stability is examined. The damping action is achieved through the independent control of real power flow from the stabilizer and voltage at the point of common coupling between the stabilizer and grid system. The stabilizer system is designed based on classical frequency response technique. Robustness of the proposed control strategy in enhancing network dynamic stability is demonstrated through computer simulation.

摘要：随着风力发电渗透率的日益提高,风电波动给电网带来了大量的负面影响。采用超级电容–蓄电池混合储能系统平衡风功率和风电场计划出力之间的偏差。首先,采用经验模态分解技术(empirical mode decomposition,EMD)将电网中的计划出力与原始风功率之间的不平衡功率(unbalanced power,UP)分解成若干固有模态函数(intrinsic mode functions,IMFs)。其次,以各固有模态函数之间能量混叠最少为原则确定"划分频率",将不平衡功率分解成为高频分量和低频分量,并分别采用超级电容和蓄电池对其进行平抑。最后,以风电场实际出力数据为基础,设计了同时考虑投资成本与调度效果的混合储能系统(hybrid storage system,HSS),计算结果验证了所提方法的有效性。