本文關(guān)鍵詞： 諧波 主動配電網(wǎng) 預測 預警 云模型　出處：《電力系統(tǒng)保護與控制》2014年23期 　論文類型：期刊論文

【摘要】：提出了一種用于主動配電網(wǎng)諧波預測預警的方法�；陔S機求和原理考慮間歇式能源投入或切出主動配電網(wǎng)后引起的諧波變化,對間歇式能源并網(wǎng)或脫網(wǎng)后主動配電網(wǎng)的諧波進行預測,作為主動配電網(wǎng)協(xié)調(diào)控制新能源的依據(jù)。考慮間歇式能源投入主動配電網(wǎng)后引起的諧波變化較大,采用云模型對諧波電流建模,利用云模型的熵來衡量正常運行方式時諧波電流的波動范圍,從而確定出間歇式能源并網(wǎng)前后諧波電流的異常閾值。將實測數(shù)據(jù)與諧波異常閾值比較,可判斷諧波電流是否異常,從而實現(xiàn)諧波電流預警。仿真和工程算例驗證了該方法的實用性和有效性。
[Abstract]:A method for harmonic prediction and early warning of active distribution network is proposed. Based on the principle of random summation, harmonic changes caused by intermittent energy input or cutting out active distribution network are considered. The harmonics of active distribution network after intermittent energy is connected or unconnected are predicted as the basis for coordinated control of new energy in active distribution network. The harmonic changes caused by intermittent energy input into active distribution network are considered. The cloud model is used to model the harmonic current, and the entropy of the cloud model is used to measure the fluctuation range of the harmonic current in the normal operation mode. In order to determine the abnormal threshold of harmonic current before and after the intermittent energy is connected to the grid, and compare the measured data with the abnormal threshold of harmonic, we can judge whether the harmonic current is abnormal or not. Simulation and engineering examples verify the practicability and effectiveness of the method.
【作者單位】： 廣東電網(wǎng)公司電力科學研究院;廣東電網(wǎng)公司;
【基金】：國家高技術(shù)研究發(fā)展計劃(863計劃)(2012AA050212)~~
【分類號】：TM73

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本文編號：1544159