电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2014年
5期
90-97
,共8页
无刷双馈异步电机%潮流建模%最大功率点跟踪%有功调度%收敛性%改进平电压启动
無刷雙饋異步電機%潮流建模%最大功率點跟蹤%有功調度%收斂性%改進平電壓啟動
무쇄쌍궤이보전궤%조류건모%최대공솔점근종%유공조도%수렴성%개진평전압계동
brushless doubly-fed induction machine%power flow modeling%maximum power point tracking%active power dispatch%convergence%modified flat voltage start
针对并网无刷双馈异步电机（BDFM）风电机组潮流计算问题，发现在最大功率点跟踪（MPPT）方式下，BDFM 有功出力与电网运行条件有关；提出BDFM与电网联立求解潮流模型。对于受功率调度的BDFM，发现有功参考值在低风速下可能得不到满足，将导致潮流发散；提出两阶段潮流模型：首先判断功率调度是否有效，然后选择 BDFM潮流约束和求解方法。为改善潮流收敛性，提出基于转差率或支路功率的BDFM初值算法。给出IEEE RTS系统中BDFM参数计算结果，以验证所提BDFM潮流算法的可行性和正确性。
針對併網無刷雙饋異步電機（BDFM）風電機組潮流計算問題，髮現在最大功率點跟蹤（MPPT）方式下，BDFM 有功齣力與電網運行條件有關；提齣BDFM與電網聯立求解潮流模型。對于受功率調度的BDFM，髮現有功參攷值在低風速下可能得不到滿足，將導緻潮流髮散；提齣兩階段潮流模型：首先判斷功率調度是否有效，然後選擇 BDFM潮流約束和求解方法。為改善潮流收斂性，提齣基于轉差率或支路功率的BDFM初值算法。給齣IEEE RTS繫統中BDFM參數計算結果，以驗證所提BDFM潮流算法的可行性和正確性。
침대병망무쇄쌍궤이보전궤（BDFM）풍전궤조조류계산문제，발현재최대공솔점근종（MPPT）방식하，BDFM 유공출력여전망운행조건유관；제출BDFM여전망련립구해조류모형。대우수공솔조도적BDFM，발현유공삼고치재저풍속하가능득불도만족，장도치조류발산；제출량계단조류모형：수선판단공솔조도시부유효，연후선택 BDFM조류약속화구해방법。위개선조류수렴성，제출기우전차솔혹지로공솔적BDFM초치산법。급출IEEE RTS계통중BDFM삼수계산결과，이험증소제BDFM조류산법적가행성화정학성。
To the power flow modeling of the brushless doubly-fed induction generators (BDFMs), it is found that their active output under the maximum power point tracking (MPPT) mode is related to the power system operation condition, thus simultaneous solution to power flow constraints of the BDFMs and the power system is newly proposed. For the BDFMs under power dispatch, it is found that the reference power may not be satisfied by low wind speed, yielding divergence of power flow solution. A two-stage power flow model is newly proposed. Effectiveness of power dispatch object is judged to choose the power constraints and solution procedure for the BDFMs. To improve power flow convergence, the initial setting to the BDFMs set by the rotor slips or branch powers is newly proposed. The numerical results on IEEE RTS test system are provided, which validate the feasibility and accuracy of the proposed models.
