【摘要】：當(dāng)電網(wǎng)發(fā)生強(qiáng)迫功率振蕩時(shí),快速找到擾動(dòng)源并將其切除,對(duì)保障電網(wǎng)的安全穩(wěn)定運(yùn)行具有重要意義。電網(wǎng)中強(qiáng)迫功率振蕩引起的機(jī)電擾動(dòng)會(huì)沿著輸電線路在電網(wǎng)中傳播,根據(jù)傳播到不同位置的擾動(dòng)波形具有時(shí)間延遲的特點(diǎn),提出了一種利用最小均方時(shí)延估計(jì)法定位擾動(dòng)源的方法。利用二次差分法檢測(cè)強(qiáng)迫功率振蕩起振后,通過計(jì)算關(guān)鍵母線頻率出現(xiàn)擾動(dòng)波形的時(shí)差和先后次序,分析擾動(dòng)傳播的順序,從而確定擾動(dòng)源的位置。該方法只需要廣域測(cè)量信息,可以實(shí)現(xiàn)在線應(yīng)用。四機(jī)兩區(qū)域系統(tǒng)算例和華中電網(wǎng)算例均驗(yàn)證了該方法的有效性。
[Abstract]:When the forced power oscillation occurs, it is very important to find the disturbance source quickly and remove it, which is very important to ensure the safe and stable operation of the power network. The electromechanical disturbance caused by forced power oscillation propagates along the transmission line in the power network. According to the disturbance waveform propagating to different positions, it has the characteristic of time delay. In this paper, a method of locating the disturbance source by using the least mean square time delay estimation method is proposed. After the forced power oscillation is detected by the quadratic difference method, by calculating the time difference and sequence of the disturbance waveform in the key bus frequency, the sequence of the disturbance propagation is analyzed, and the position of the disturbance source is determined. This method only needs wide area measurement information and can be applied online. The effectiveness of the method is verified by four-machine and two-area system examples and the central China power network examples.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;中國(guó)電力科學(xué)研究院;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2011AA05A119) 國(guó)家電網(wǎng)公司大電網(wǎng)重大專項(xiàng)資助項(xiàng)目(SGCC-MPLG029-2012)~~
【分類號(hào)】：TM712

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