發(fā)布時(shí)間：2018-04-22 13:37

  本文選題：海上風(fēng)電 + 雙饋電機(jī)�。� 參考：《中國電機(jī)工程學(xué)報(bào)》2017年01期

【摘要】：海上風(fēng)電機(jī)組運(yùn)行環(huán)境惡劣,早期故障信號微弱可能導(dǎo)致故障迅速惡化、引起修護(hù)困難,該文提出以擬序阻抗為故障特征量的海上雙饋電機(jī)定子繞組匝間短路早期故障的辨識方法。首先構(gòu)建精確、通用的雙饋電機(jī)(doubly-fed induction generator,DFIG)定子繞組匝間短路故障模型,推導(dǎo)演繹故障狀態(tài)下各序分量的表達(dá)式;然后計(jì)及工程上各種非理想運(yùn)行工況的影響,得到由于故障引起的擬序阻抗表達(dá)式。仿真和實(shí)驗(yàn)分析結(jié)果表明,擬序阻抗對雙饋電機(jī)定子繞組匝間短路的早期故障辨識具有高靈敏性與高可靠性,為海上雙饋電機(jī)故障的精確辨識提供技術(shù)支撐。
[Abstract]:The poor operating environment of offshore wind turbines and the weak early fault signals may lead to the rapid deterioration of the faults and the difficulty of repair and maintenance. This paper presents an early fault identification method for inter-turn short circuit of stator windings of a marine doubly-fed machine with pseudo-sequence impedance as its fault characteristic. Firstly, an accurate and universal fault model of inter-turn short circuit in stator windings of doubly-fed induction generator (DFIGD) is constructed, and the expressions of each sequence component under the condition of fault are deduced, and then the influence of various non-ideal operating conditions in engineering is taken into account. The expression of pseudo-sequence impedance caused by fault is obtained. The simulation and experimental results show that the pseudo-sequence impedance has high sensitivity and high reliability for early fault identification of stator winding inter-turn short circuit of doubly-fed machine, which provides technical support for accurate fault identification of offshore doubly-fed machine.
【作者單位】： 上海電力學(xué)院電氣工程學(xué)院;
【基金】：上海市科技創(chuàng)新行動計(jì)劃(16DZ1203504) 上海綠色能源并網(wǎng)工程技術(shù)研究中心(13DZ2251900) “電氣工程”上海市Ⅱ類高原學(xué)科,上海市電站自動化技術(shù)重點(diǎn)實(shí)驗(yàn)室~~
【分類號】：TM614

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本文編號：1787445