【摘要】：同步相量測量單元(Phasor Measurement Unit,PMU)的廣泛應(yīng)用,為實(shí)現(xiàn)大規(guī)模區(qū)域電網(wǎng)的動(dòng)態(tài)安全監(jiān)控提供了數(shù)據(jù)基礎(chǔ)。進(jìn)行PMU靜動(dòng)態(tài)測試,對(duì)其相量量測精度進(jìn)行校準(zhǔn),是保證PMU可靠應(yīng)用的前提。基于校準(zhǔn)器的PMU靜動(dòng)態(tài)測試系統(tǒng)將校準(zhǔn)器輸出作為標(biāo)準(zhǔn)值,彌補(bǔ)了基于高精度信號(hào)源的PMU靜動(dòng)態(tài)測試系統(tǒng)產(chǎn)生時(shí)延與無法在線測試的缺陷。進(jìn)行PMU校準(zhǔn)器同步相量量測方法的研究是搭建測試系統(tǒng)的重點(diǎn)。因此,研究適用于PMU校準(zhǔn)器的相量測量方法,并將其應(yīng)用至PMU測試系統(tǒng)中,有著深遠(yuǎn)的意義。論文實(shí)現(xiàn)了改進(jìn)插值DFT同步相量算法,通過添加窗函數(shù),并利用迭代對(duì)主頻負(fù)分量引起的誤差進(jìn)行補(bǔ)償,彌補(bǔ)了傳統(tǒng)插值DFT同步相量算法的不足,在保證計(jì)算速度的前提下,提高了計(jì)算精度,可用于靜態(tài)測試的幅值與相角計(jì)算。為了進(jìn)一步提高算法精度,論文提出了非線性回歸同步相量算法。通過對(duì)測試信號(hào)進(jìn)行有針對(duì)性的建模,在Levenberg-Marquardt法的基礎(chǔ)上,實(shí)現(xiàn)了同步相量的計(jì)算。進(jìn)一步,論文將非線性回歸同步相量算法應(yīng)用至PMU校準(zhǔn)器硬件平臺(tái),搭建基于校準(zhǔn)器的PMU靜動(dòng)態(tài)測試系統(tǒng),并利用測試系統(tǒng)進(jìn)行了測試。
[Abstract]:The application of Phasor Measurement Unit (PMU) provides a data base for the dynamic security monitoring of large-scale regional power network. The static and dynamic measurement of PMU and calibration of its phasor accuracy are the prerequisite to ensure the reliable application of PMU. The static and dynamic test system of PMU based on calibrator takes the output of calibrator as the standard value, which makes up for the defects of the static and dynamic test system of PMU based on high precision signal source, such as delay and unavailability of on-line test. The research of PMU calibrator synchronous phasor measurement method is the key of building the test system. Therefore, it is of great significance to study the phasor measurement method suitable for PMU calibrator and to apply it to PMU test system. In this paper, the improved interpolation DFT synchronization phasor algorithm is implemented. By adding window function and using iteration to compensate the error caused by the negative component of the main frequency, the deficiency of the traditional interpolation DFT synchronization phasor algorithm is made up, and the calculation speed is guaranteed. The calculation accuracy is improved and can be used to calculate the amplitude and phase angle of static test. In order to further improve the accuracy of the algorithm, a nonlinear regression synchronous phasor algorithm is proposed. Based on Levenberg-Marquardt method, the synchronous phasor is calculated by modeling the test signal. Furthermore, the nonlinear regression synchronous phasor algorithm is applied to the hardware platform of PMU calibrator, and the static and dynamic test system of PMU based on the calibrator is built, and the test system is used to test the system.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM930

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 張道農(nóng);劉灝;畢天姝;胡玉嵐;張曉莉;;中外PMU靜動(dòng)態(tài)標(biāo)準(zhǔn)及評(píng)估方法對(duì)比分析[J];電力系統(tǒng)保護(hù)與控制;2013年17期

2 陳靜;劉滌塵;王寶華;;基于有限PMU的廣域后備保護(hù)研究[J];電力系統(tǒng)保護(hù)與控制;2012年17期

3 劉灝;畢天姝;楊奇遜;;數(shù)字濾波器對(duì)PMU動(dòng)態(tài)行為的影響[J];中國電機(jī)工程學(xué)報(bào);2012年19期

4 王茂海;高洵;王蓓;牛四清;;基于廣域測量系統(tǒng)的次同步振蕩在線監(jiān)測預(yù)警方法[J];電力系統(tǒng)自動(dòng)化;2011年06期

5 畢天姝;劉灝;吳京濤;楊奇遜;;PMU電壓幅值與頻率量測一致性的在線評(píng)估方法[J];電力系統(tǒng)自動(dòng)化;2010年21期

6 徐慧明;畢天姝;黃少鋒;楊奇遜;馬瑞;;基于廣域同步測量系統(tǒng)的預(yù)防連鎖跳閘控制策略[J];中國電機(jī)工程學(xué)報(bào);2007年19期

相關(guān)碩士學(xué)位論文 前1條

1 錢程;基于高精度校準(zhǔn)器的PMU動(dòng)態(tài)測試系統(tǒng)研究[D];華北電力大學(xué);2014年

，

本文編號(hào)：2120403