风电装备VSG等效功率平抑及频率补偿方法  

Wind Power Equipment VSG Equivalent Power to Tame and Frequency Compensation

作　　者：王桂英[1] 韩奇霖 李天宇[1] 

机构地区：[1]沈阳农业大学,信息与电气工程学院,辽宁沈阳110161

出　　处：《电力电子技术》2016年第2期28-30,共3页Power Electronics

摘　　要：借鉴传统电力系统中的同步发电机数学模型,提出一种大规模风电装备虚拟同步发电机(VSG)等效实现功率平抑及频率补偿方法。首先,设计了具有电力电子装置自身特性的虚拟调速器和虚拟励磁控制器,保证电网电流的低谐波畸变的同时,具有响应电网电压幅度、频率波动事件功能,可在一定程度上提高电网稳定性。同时模拟同步发电机的转动惯量,提高电网接口的惯性和阻尼特性,降低大规模风力发电系统对传统电网的冲击。最后,基于110 kW风力发电机组及锂电池储能单元对所提方法的可行性和有效性进行了验证与分析。Drawing on traditional mathematical model of synchronous generator in power system,proposed a large-scale wind power gear virtual synchronous generator（VSG） is equivalent to realize the ease and frequency offset compensation method of power.First of all,with characteristics of power electronic devices are designed by virtual governor and excitation controller while maintaining low harmonic distortion of current to meet the load power requirements,and with voltage/frequency response function of abnormal events,to a certain extent improved the stability of the net-work.Simulate synchronous generators inertia,improving network interface of inertia and damping,reducing the impact of variable frequency driving system on the grid,improve network adaptability to large-scale inverter driver system integration.Finally,110 kW,wind turbines and lithium battery energy storage unit on the feasibility and effectiveness of the method is validated and analyzed.

关 键 词：发电机 风电系统 功率平抑 

分 类 号：TM31[电气工程—电机]