电网技术
電網技術
전망기술
Power System Technology
2015年
4期
904-910
,共7页
微电网%孤岛运行%联网运行%平滑切换
微電網%孤島運行%聯網運行%平滑切換
미전망%고도운행%련망운행%평활절환
microgrid%isolated island operation mode%grid-connected operation mode%smooth switching
以含光伏源的微电网为研究对象，针对微电网孤岛运行模式与联网运行模式的切换以及微电网在不同运行模式下不同控制策略之间的切换，提出了一种基于PQ控制器初始输出状态对 V/f 控制器输出状态同步跟随的平滑切换方法，改进了传统的预同步控制器，最后分析了在给定参数下电压电流双环控制系统的性能和输出阻抗。仿真结果验证了所提控制策略的有效性。
以含光伏源的微電網為研究對象，針對微電網孤島運行模式與聯網運行模式的切換以及微電網在不同運行模式下不同控製策略之間的切換，提齣瞭一種基于PQ控製器初始輸齣狀態對 V/f 控製器輸齣狀態同步跟隨的平滑切換方法，改進瞭傳統的預同步控製器，最後分析瞭在給定參數下電壓電流雙環控製繫統的性能和輸齣阻抗。倣真結果驗證瞭所提控製策略的有效性。
이함광복원적미전망위연구대상，침대미전망고도운행모식여련망운행모식적절환이급미전망재불동운행모식하불동공제책략지간적절환，제출료일충기우PQ공제기초시수출상태대 V/f 공제기수출상태동보근수적평활절환방법，개진료전통적예동보공제기，최후분석료재급정삼수하전압전류쌍배공제계통적성능화수출조항。방진결과험증료소제공제책략적유효성。
Taking the microgrid containing photovoltaic (PV) generations as the research object, in allusion to the switching between isolated island operation mode and grid-connection operation mode of microgrid and the switching among different control strategies of microgrid under different microgrid operation modes a smooth switching strategy based on the synchronous tracking of initial output situation of PQ controller to output situation of V/f controller is proposed to meliorate traditional pre-synchronous controller is proposed; finally the performance and output impedance of voltage-current double loop controller under specified parameters are analyzed. The effectiveness of the proposed control strategy is validated by simulation results.
