摘要
为提高新能源发电组网输出的稳定性和抗干扰能力,研究电力电子变换器拓扑技术在新能源发电组网中的应用。基于软并网和硬并网联合设计的新能源发电组网方案,以变压器、发电机及输电线路等元件作为差动谐波控制模型,结合继电保护和二次谐波参数融合,在差动电流中通过电力电子变换器的拓扑设计,通过短暂的闭锁差动保护方法,建立单位功率因数下的新能源发电组网控制和光伏输出电流稳态控制模型。实验结果表明,采用该方法进行新能源发电组网的输出稳定性较好,二次谐波含量降低。
In order to improve the stability and anti-interference ability of the output of new energy generation network, the application of power electronic converter topology technology in new energy generation network is studied. Based on the joint design of soft and hard grid-connected new energy generation group network scheme, the transformer, generator and transmission line components are used as the differential harmonic control model, combined with relay protection and second harmonic parameter fusion, and the topology design of power electronic converter in the differential current, the new energy generation group network control and PV output current steady-state under unit power factor is established through the short-lived blocking differential protection method. control model with unit power factor.The experimental results show that the output stability of the new energy generation grid using this method is better and the second harmonic content is reduced.
作者
杨海华
Yang Haihua(Nanjing Nanrui Relay Electric Co.,Ltd.,Nanjing Jiangsu 211106)
出处
《现代工业经济和信息化》
2022年第12期124-125,127,共3页
Modern Industrial Economy and Informationization
关键词
电力电子变换器
拓扑技术
新能源
发电组网
power electronic converter
topology technology
new energy
power generation network
