【摘要】：大規(guī)模風電爬坡事件對電力系統(tǒng)功率平衡問題影響顯著,嚴重時可能導致停電事故�；趨^(qū)間分析理論,提出了一種風電爬坡事件多級預警方法,對可能造成的危害程度進行預先警告�？紤]風電爬坡預測研究現(xiàn)狀,采用區(qū)間數(shù)形式對其不確定性進行描述;針對風電爬坡事件強波動性對電力系統(tǒng)功率控制的影響,以維持靜態(tài)頻率偏差在允許范圍內(nèi)為前提,分析采用不同功率控制措施滿足功率平衡所對應(yīng)的風電爬坡幅度允許區(qū)間;確定各等級預警區(qū)間的預警界限,并利用區(qū)間排序方法計算各預警區(qū)間的概率,實現(xiàn)多級預警。算例仿真分析及比較結(jié)果表明,所述方法能夠給出各級預警區(qū)間的界限值及概率分布,物理意義明確,且簡便快速,利于實時滾動運行,體現(xiàn)了有效性和實用性。
[Abstract]:Large-scale wind power climbing events have a significant impact on the power balance of power system, which may lead to power outages in serious cases. Based on the theory of interval analysis, a multi-level early warning method for wind power climbing events is proposed to warn the possible harm degree in advance. Considering the research status of wind power climbing prediction, the uncertainty is described in the form of interval number, and in view of the influence of strong fluctuation of wind power climbing events on power control of power system, the allowable range of wind power climbing amplitude corresponding to different power control measures is analyzed on the premise of maintaining static frequency deviation within the allowable range. The early warning limit of each grade early warning interval is determined, and the probability of each early warning interval is calculated by using the interval ranking method, and the multi-level early warning is realized. The simulation results and comparison results show that the method can give the boundary value and probability distribution of the early warning interval at all levels, the physical meaning is clear, and it is simple and fast, which is beneficial to the real-time rolling operation, and reflects the effectiveness and practicability.
【作者單位】： 電網(wǎng)智能化調(diào)度與控制教育部重點實驗室(山東大學);
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)資助項目(2012CB215101) 國家自然科學基金資助項目(51177092)~~
【分類號】：TM614

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本文編號：2507117