电工电气
電工電氣
전공전기
Electrotechnics Electric (Jiangsu Electrical Apparatus)
2015年
9期
4-7,58
,共5页
并网光伏电站%LCL滤波器%PSCAD/EMTDC软件%双闭环控制
併網光伏電站%LCL濾波器%PSCAD/EMTDC軟件%雙閉環控製
병망광복전참%LCL려파기%PSCAD/EMTDC연건%쌍폐배공제
grid-connected photovoltaic (PV) station%LCL iflter%PSCAD/EMTDC software%double closed-loop control
介绍了并网光伏电站拓扑结构，建立了基于LCL滤波器滤波电容串联电阻的无源阻尼控制模型，并通过设计方案得出相关元件的参数取值。设计的外环电压、内环电流的并网逆变器双闭环控制策略，实现了对交直流参考信号的准确跟踪。通过在PSCAD/EMTDC软件环境下搭建并网仿真模型，分析光伏电站在正常运行状态以及网侧故障情况下的输出特性，结果验证了滤波器参数设计的合理性及逆变器控制策略的有效性。
介紹瞭併網光伏電站拓撲結構，建立瞭基于LCL濾波器濾波電容串聯電阻的無源阻尼控製模型，併通過設計方案得齣相關元件的參數取值。設計的外環電壓、內環電流的併網逆變器雙閉環控製策略，實現瞭對交直流參攷信號的準確跟蹤。通過在PSCAD/EMTDC軟件環境下搭建併網倣真模型，分析光伏電站在正常運行狀態以及網側故障情況下的輸齣特性，結果驗證瞭濾波器參數設計的閤理性及逆變器控製策略的有效性。
개소료병망광복전참탁복결구，건립료기우LCL려파기려파전용천련전조적무원조니공제모형，병통과설계방안득출상관원건적삼수취치。설계적외배전압、내배전류적병망역변기쌍폐배공제책략，실현료대교직류삼고신호적준학근종。통과재PSCAD/EMTDC연건배경하탑건병망방진모형，분석광복전참재정상운행상태이급망측고장정황하적수출특성，결과험증료려파기삼수설계적합이성급역변기공제책략적유효성。
Introduction was made to the topological structure of grid-connected photovoltaic (PV) station. This paper established a passive damping control model of iflter capacitor series resistance based on LCL iflter and the values of related components were decided. The dou-ble closed-loop control strategy was drafted for the inverter, so as to track the reference signals. Both normal operation of PV station and the short-circuit fault occurred in the power grid were simulated and analyzed in PSCAD/EMTDC. The results of simulation show the rationality of the iflter parameters design and the effectiveness of the inverter’s control strategy.
