电力科学与工程
電力科學與工程
전력과학여공정
INFORMATION ON ELECTRIC POWER
2014年
2期
7-11
,共5页
风力发电逆变器%多环反馈控制%加权控制算法%无缝切换
風力髮電逆變器%多環反饋控製%加權控製算法%無縫切換
풍력발전역변기%다배반궤공제%가권공제산법%무봉절환
wind power inverter%multiple loop feedback control%weight control algorithm%seamless handover
每一种分布式电源都有并网运行和孤岛运行两种运行模式。提出一种多环反馈的逆变控制器，风力发电机并网逆变器在两种运行模式下都采用PQ控制，发出指定的有功功率和无功功率；储能蓄电池并网逆变器在并网时采用PQ控制，发出指定的有功和无功功率，孤岛时采用V/f控制，维持电压和频率。设计一种加权控制算法，在分布式电源两种运行模式切换时，抑制并网电流的冲击，稳定负载电压，达到无缝切换。利用电磁暂态分析软件PSCAD/EMTDC进行了仿真分析，算例结果验证了所提方法的有效性和可行性。
每一種分佈式電源都有併網運行和孤島運行兩種運行模式。提齣一種多環反饋的逆變控製器，風力髮電機併網逆變器在兩種運行模式下都採用PQ控製，髮齣指定的有功功率和無功功率；儲能蓄電池併網逆變器在併網時採用PQ控製，髮齣指定的有功和無功功率，孤島時採用V/f控製，維持電壓和頻率。設計一種加權控製算法，在分佈式電源兩種運行模式切換時，抑製併網電流的遲擊，穩定負載電壓，達到無縫切換。利用電磁暫態分析軟件PSCAD/EMTDC進行瞭倣真分析，算例結果驗證瞭所提方法的有效性和可行性。
매일충분포식전원도유병망운행화고도운행량충운행모식。제출일충다배반궤적역변공제기，풍력발전궤병망역변기재량충운행모식하도채용PQ공제，발출지정적유공공솔화무공공솔；저능축전지병망역변기재병망시채용PQ공제，발출지정적유공화무공공솔，고도시채용V/f공제，유지전압화빈솔。설계일충가권공제산법，재분포식전원량충운행모식절환시，억제병망전류적충격，은정부재전압，체도무봉절환。이용전자잠태분석연건PSCAD/EMTDC진행료방진분석，산례결과험증료소제방법적유효성화가행성。
Every kind of distributed power has two operation modes,namely,grid connected operation and islan-ded operation. This paper proposes a kind of multiple loop feedback inverter controller,in which wind generator grid-connected inverter adopts PQ control in the two operation modes and produces the specified active power and reactive power. Energy storage battery grid-connected inverter uses PQ control to generate specified active and inac-tive power when it is connected to the grid,while employs V/f control when the system is operated in islanded mode to maintain the voltage and frequency. At the same time a weighted control algorithm is designed in distributed pow-er supply to inhibit the grid connected current impact when the two operation modes of distributed power supply are switching,so as to achieve a seamless handover. Simulation analysis is performed by using electromagnetic transi-ent analysis software PSCAD/ EMTDC. The results verify the effectiveness and feasibility of the proposed method.
