本文選題：GPRS　切入點：無功補償　出處：《廣西大學(xué)》2015年碩士論文

【摘要】：無功補償控制系統(tǒng)的作用是在電網(wǎng)出現(xiàn)異常時控制終端投切電容器以提高電網(wǎng)的功率因數(shù),對電網(wǎng)進行無功功率的補償和優(yōu)化。城鄉(xiāng)各地電網(wǎng)布局比較廣,一些偏遠地方交通不方便,設(shè)備出問題很難及時處理,針對這種情況本文設(shè)計了一種基于GPRS的無功補償智能控制系統(tǒng)。該系統(tǒng)包括有硬件子系統(tǒng)和軟件子系統(tǒng)兩部分組成。本論文首先分析傳統(tǒng)的無功補償原理,設(shè)計基于ARM的嵌入式無功補償系統(tǒng)總體方案,以LPC2292芯片為控制核心,以SIM900A模塊做為GPRS通信終端,配以數(shù)據(jù)采集模塊、抄電能表模塊和無功補償模塊等為一體無功補償系統(tǒng)。其次設(shè)計了系統(tǒng)的硬件電路,整合各個模塊之間的最優(yōu)搭配方案。采用反激式開關(guān)電源,使系統(tǒng)電源在一定范圍內(nèi)實現(xiàn)無級調(diào)節(jié),采用AD7E55集成電能測量電路,測量電能穩(wěn)定準(zhǔn),對模擬信號采集電路和微功率無線通信接口電路等進行優(yōu)化選擇設(shè)計,使系統(tǒng)運行更加可靠穩(wěn)定。接著介紹了無功補償系統(tǒng)的控制算法并進行軟件設(shè)計,系統(tǒng)采用Linux操作系統(tǒng),系統(tǒng)為模塊式任務(wù)設(shè)計,包含有數(shù)據(jù)采集和處理任務(wù)、通信終端任務(wù)和級聯(lián)處理任務(wù)等,在無功補償任務(wù)模塊對無功補償電容量進行計算和分析,計算最優(yōu)補償策略和分析控制方法。最后對系統(tǒng)進行GPRS通信調(diào)試,進行軟件測試,達到了預(yù)期的效果。本設(shè)計有利于電網(wǎng)配電的安全運行,同時有一定的經(jīng)濟效益,對提高供電質(zhì)量和實時監(jiān)控起到了積極的作用。
[Abstract]:The function of the reactive power compensation control system is to control the terminal switching capacitors to improve the power factor and to compensate and optimize the reactive power when the power network is abnormal.The distribution of power grids in urban and rural areas is relatively wide, some remote areas are not convenient for transportation, and it is difficult to deal with the problems in time. In view of this situation, a reactive power compensation intelligent control system based on GPRS is designed in this paper.The system consists of hardware subsystem and software subsystem.This paper first analyzes the traditional reactive power compensation principle, designs the overall scheme of the embedded reactive power compensation system based on ARM, takes the LPC2292 chip as the control core, the SIM900A module as the GPRS communication terminal, and the data acquisition module.Watt-hour meter reading module and reactive power compensation module are integrated reactive power compensation system.Secondly, the hardware circuit of the system is designed to integrate the optimal matching scheme between the various modules.The flyback switching power supply is adopted to realize stepless regulation of the system power supply within a certain range, and the AD7E55 integrated power measurement circuit is adopted to measure the power energy stably and accurately.The analog signal acquisition circuit and micro-power wireless communication interface circuit are optimized and designed to make the system more reliable and stable.Then the control algorithm and software design of reactive power compensation system are introduced. The system adopts Linux operating system, and the system is modular task design, including data acquisition and processing task, communication terminal task and cascade processing task, etc.In the reactive power compensation task module, the reactive power compensation capacity is calculated and analyzed, the optimal compensation strategy and the analytical control method are calculated.Finally, the GPRS communication debugging and software testing are carried out, and the expected results are achieved.The design is beneficial to the safe operation of power distribution system and has certain economic benefits. It plays an active role in improving the quality of power supply and real-time monitoring.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN929.532;TM714.3

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本文編號：1718478