本文關(guān)鍵詞： 換流變壓器 勵磁涌流 特高壓直流輸電 普通電力變壓器 PSCAD　出處：《電網(wǎng)技術(shù)》2017年12期 　論文類型：期刊論文

【摘要】：近幾年換流變壓器空載合閘產(chǎn)生的勵磁涌流影響了直流輸電系統(tǒng)的安全穩(wěn)定性。換流變壓器由于漏抗高且運(yùn)行方式特殊,其勵磁涌流較特殊。為分析換流變壓器空充產(chǎn)生的勵磁涌流與普通電力變壓器產(chǎn)生的勵磁涌流的不同,從換流變壓器的基本特性、勵磁曲線、繞組結(jié)構(gòu)、運(yùn)行方式以及有載調(diào)壓等角度分析了換流變壓器勵磁涌流的特殊性,并提出了相應(yīng)的運(yùn)行建議。分析表明,相較于普通電力變壓器的勵磁涌流,換流變壓器勵磁涌流的幅值更高,衰減更慢,二次諧波幅值高、占比小,且受分接頭檔位的影響。同時(shí),還分析了特高壓直流輸電工程換流變壓器投切順序?qū)畲庞苛鞯挠绊?并提出運(yùn)行建議。
[Abstract]:In recent years, the inrush current caused by no-load closing of converter transformer affects the safety and stability of HVDC transmission system. The converter transformer has a special operation mode because of its high leakage reactance. The inrush current of converter transformer is special. In order to analyze the difference between the excitation inrush current produced by empty charge of converter transformer and that produced by ordinary power transformer, the basic characteristics of converter transformer, excitation curve, winding structure, In this paper, the particularity of excitation inrush current of converter transformer is analyzed from the angle of operation mode and on-load voltage regulation, and the corresponding operation suggestions are put forward. The analysis shows that, compared with ordinary power transformer, the inrush current of excitation is different from that of ordinary power transformer. The amplitude of excitation inrush current of converter transformer is higher, the attenuation is slower, the amplitude of second harmonic is high, the proportion of secondary harmonic is small, and it is affected by the splice gear. At the same time, the influence of switching order of converter transformer on excitation inrush current in UHV HVDC transmission project is analyzed. And put forward the operation suggestion.
【作者單位】： 華南理工大學(xué)電力學(xué)院;中國南方電網(wǎng)有限責(zé)任公司電力調(diào)度控制中心;
【基金】：國家自然科學(xué)基金項(xiàng)目(51377059,51677073)~~
【分類號】：TM41

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本文編號：1555565