【摘要】：電力系統(tǒng)配電網(wǎng)中往往存在功率因數(shù)過低、諧波等問題,這些問題會對電網(wǎng)的運行造成一定的影響,本課題的研究旨在降低電網(wǎng)中的功率因數(shù)過低和諧波等問題對電網(wǎng)的影響。隨著電力電子技術(shù)的發(fā)展,針對電力系統(tǒng)中存在的功率因數(shù)過低、諧波的問題,有源電力濾波器由于其明顯的優(yōu)勢,取代了傳統(tǒng)的無源電力濾波器,被廣泛地應(yīng)用于電力系統(tǒng)配電網(wǎng)中。本課題的研究首先是借助于MATLAB/SIMULINK的仿真平臺研究傳統(tǒng)的基于瞬時無功功率理論的p、q運算方式和pi、qi運算方式,提出采用一種改進型的運算方式-改進型pi、qi運算方式。其次,由于雙閉環(huán)控制策略具有響應(yīng)速度快、工程實現(xiàn)容易等優(yōu)點,針對江西配電網(wǎng)存在負載電流畸變、功率因數(shù)過低等問題,在本課題的研究中針對低壓動態(tài)補償裝置提出采取檢測負載電流的雙閉環(huán)控制策略。再次,依據(jù)RTDS測試裝置對信號的要求,設(shè)計RTDS的擴展標準接口電路板,用于連接實物控制器與RTDS從而構(gòu)建仿真模型,測試結(jié)果顯示結(jié)合實物控制器的RTDS仿真測試結(jié)果優(yōu)于傳統(tǒng)的純軟件仿真測試,與實際結(jié)果更為接近。研發(fā)的擴展標準接口電路板具有通用性,擴展了RTDS測試裝置的使用范圍。最后,基于RTDS的APF控制器仿真測試和現(xiàn)場測試,兩種結(jié)果吻合,驗證了擴展標準接口電路板的有效性和準確性,擴展了RTDS的應(yīng)用范圍,節(jié)省了人力和物力,證明了結(jié)合實物控制器的實時數(shù)字仿真測試的有效性。同時,通過APF控制器仿真測試內(nèi)容提出了測試標準方法,包括直流側(cè)穩(wěn)壓試驗,正常運行試驗(限流能力試驗、補償效果試驗和動態(tài)響應(yīng)試驗)以及異常狀態(tài)下的保護試驗(電壓波動和頻率波動)。提出的測試標準方法在類似的工程上,對逆變器裝置具有良好的通用性。
[Abstract]:There are many problems in power distribution network, such as low power factor and harmonic. These problems will affect the operation of power system. The purpose of this paper is to reduce the influence of low power factor and harmonic on power system. With the development of power electronics technology, active power filter (APF) has replaced the traditional passive power filter (APF) because of its obvious advantages, aiming at the problems of low power factor and harmonic in power system. It is widely used in distribution network of power system. In this paper, firstly, with the help of the simulation platform of MATLAB/SIMULINK, we study the traditional PQ and PIQI operation methods based on instantaneous reactive power theory, and propose an improved PIQI operation mode, which is an improved operation mode, which is based on the theory of instantaneous reactive power. Secondly, because the double closed loop control strategy has the advantages of fast response speed and easy engineering implementation, there are some problems in Jiangxi distribution network, such as load current distortion, low power factor and so on. In this paper, a double closed loop control strategy to detect load current is proposed for low voltage dynamic compensation device. Thirdly, according to the signal requirement of RTDS testing device, the extended standard interface circuit board of RTDS is designed, which is used to connect the physical controller and RTDS to build the simulation model. The test results show that the RTDS simulation results combined with the physical controller are better than the traditional pure software simulation tests, and are closer to the actual results. The developed extended standard interface circuit board is universal and extends the scope of use of RTDS test device. Finally, the simulation test and field test of APF controller based on RTDS are carried out. The two results agree well with each other, which verify the validity and accuracy of the extended standard interface circuit board, extend the application range of RTDS, and save manpower and material resources. The validity of real-time digital simulation test combined with real-object controller is proved. At the same time, through the APF controller simulation test content, proposed the test standard method, including the DC side voltage stability test, the normal operation test (current limiting capacity test), Compensation effect test and dynamic response test) and protection test under abnormal state (voltage fluctuation and frequency fluctuation). The proposed test standard method has good generality for inverter devices in similar projects.
【學位授予單位】：南昌大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN713.8;TM761

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本文編號：2196303