本文選題：瞬時無功功率理論　切入點：互補集合經(jīng)驗?zāi)B(tài)分解　出處：《電力學(xué)報》2016年05期

【摘要】：經(jīng)理論推導(dǎo)出在電網(wǎng)電壓畸變的情況下,傳統(tǒng)的瞬時無功功率理論(p-q檢測模型)的檢測結(jié)果會根據(jù)電壓畸變程度的不同出現(xiàn)不同程度的誤差,i_p-i_q以及id-i_q檢測模型雖然解決了這一問題,但是它里面的鎖相環(huán)(PLL)與正弦發(fā)生器模塊非常容易受到電壓波動,頻率偏移等因素的影響。對互補集合經(jīng)驗?zāi)B(tài)分解(ComplementaryEnsemble Empirical Mode Decomposition,CEEMD)進行了改進,將其與p-q檢測模型相結(jié)合,消除p-q檢測模型因電壓畸變而導(dǎo)致的誤差,之后進行建模仿真,與應(yīng)用i_p-i_q模型的仿真結(jié)果進行比較,仿真結(jié)果表明,改進的瞬時無功功率模型在諧波檢測方面效果更好。
[Abstract]:Under the condition of voltage distortion in power system, The traditional instantaneous reactive power theory / p-q detection model) the detection results will be different degrees of error according to the voltage distortion degree, although the detection model of id-i_q and the id-i_q detection model can solve this problem. But the PLL and sinusoidal generator modules are easily affected by voltage fluctuation, frequency offset and other factors. The complementary Ensemble Empirical Mode Decomposition (CEEMD) is improved and combined with the p-q detection model. The error caused by voltage distortion of p-q detection model is eliminated, and the simulation results are compared with those of i_p-i_q model. The simulation results show that the improved instantaneous reactive power model is more effective in harmonic detection.
【作者單位】： 上海電機學(xué)院;上海電氣風(fēng)電設(shè)備有限公司;
【基金】：上海市教委科研創(chuàng)新項目(13YZ140);上海市教委重點學(xué)科(J51901)資助
【分類號】：TM935

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