摘要
为进一步提高大型山地风电场风电机组的电网系统谐振的适应能力,在建立风电场多机组电网系统阻抗和LCL滤波器的数学模型的基础上,文章详细研究了大型山地风电场的电网谐振及其抑制策略。因为风电场机组数量的增加会改变机组电网系统阻抗,利用准确的数学模型计算出机组谐振频率,再采用有源阻尼的控制策略设计控制器,有效地解决了机组电网谐振问题。通过对大型山地风电场的MATlab仿真和实际应用,验证了电网谐振抑制策略的有效性和优点。
In order to further improve the adaptability of grid system resonance of wind turbines in large-scale mountain wind farm,grid system impedance of wind turbine and mathematical model of LCL filter was established.In this paper,the power grid resonance of large mountain wind farm and its suppression strategy were studied in detail.Because of increasing the number of wind turbines in wind farm,the power grid system impedance would be changed.This paper firstly calculated resonance frequency by accurate mathematical model,secondly used the active damping control strategy to design the controller,finally solved the problem of grid resonance.By MATlab simulation and practical application in large-scale mountain wind farm,the effectiveness and advantages of grid resonance suppression strategy were verified.
作者
余业祥
刘江华
付斌
Yu Yexiang;Liu Jianghua;Fu Bin(Dongfang Electric Wind Power Co.,Ltd.,Deyang Sichuan,618000)
出处
《东方汽轮机》
2019年第1期73-78,共6页
Dongfang Turbine
