电网与清洁能源
電網與清潔能源
전망여청길능원
ADVANCES OF POWER SYSTEM & HYDROELECTRIC ENGINEERING
2014年
12期
109-113,118
,共6页
徐琳%唐永红%蒲维%龚锦霞
徐琳%唐永紅%蒲維%龔錦霞
서림%당영홍%포유%공금하
高电压穿越%双馈风电机组%安全电压%直流侧电压控制
高電壓穿越%雙饋風電機組%安全電壓%直流側電壓控製
고전압천월%쌍궤풍전궤조%안전전압%직류측전압공제
high voltage ride-through%doubly fed induc-tion generators%safety voltage%DC voltage control
基于双馈风电机组的动态无功支持能力,在电网电压骤升时协调控制网侧变流器和发电机定子输出的无功功率,维持直流侧母线电压的安全稳定运行。根据DFIG直流侧电容的高电压穿越安全要求,定义了电网电压骤升时双馈风力发电机组接入电压的安全电压。然后基于安全电压给出了DFIG在电网电压骤升时能否实现高电压穿越的判断依据,并给出了其高电压穿越时的无功协调输出策略。仿真结果验证了所提的方法。
基于雙饋風電機組的動態無功支持能力,在電網電壓驟升時協調控製網側變流器和髮電機定子輸齣的無功功率,維持直流側母線電壓的安全穩定運行。根據DFIG直流側電容的高電壓穿越安全要求,定義瞭電網電壓驟升時雙饋風力髮電機組接入電壓的安全電壓。然後基于安全電壓給齣瞭DFIG在電網電壓驟升時能否實現高電壓穿越的判斷依據,併給齣瞭其高電壓穿越時的無功協調輸齣策略。倣真結果驗證瞭所提的方法。
기우쌍궤풍전궤조적동태무공지지능력,재전망전압취승시협조공제망측변류기화발전궤정자수출적무공공솔,유지직류측모선전압적안전은정운행。근거DFIG직류측전용적고전압천월안전요구,정의료전망전압취승시쌍궤풍력발전궤조접입전압적안전전압。연후기우안전전압급출료DFIG재전망전압취승시능부실현고전압천월적판단의거,병급출료기고전압천월시적무공협조수출책략。방진결과험증료소제적방법。
Based on the dynamic reactive power supporting ability of DFIG,the scheme proposed in this paper can be used to coordinate the reactive power outputs of the grid side converter (GSC)and the generator to maintain the safe operation of the DC capacitor. The safety value of the interface voltage of the DFIG is defined according to the high voltage ride-through requirements of the DC capacitor. Based on the safety voltage, the judgment basis is given to judge whether the DFIG can ride through the high voltage fault during the grid voltage swell,and the strategies of the reactive outputs of the grid side converter (GSC)during the high voltage ride-through are also given. The simulation results verify correctness of the proposed scheme.