新聞中心
PRESS CENTER隨著人們對(duì)電能質(zhì)量的要求越來越高,配電網(wǎng)的供電可靠性受到很大重視。開閉所配電終端 DTU 是配電網(wǎng)系統(tǒng)的重要組成部分,DTU的遙信遙控單元實(shí)現(xiàn)了對(duì)配電系統(tǒng) 中運(yùn)行設(shè)備的實(shí)時(shí)監(jiān)控功能,遙信遙控的可靠性直接影響電能質(zhì)量的高低。然而在電網(wǎng)運(yùn)行期間,經(jīng)常出現(xiàn)遙信的誤報(bào)與遙控的誤動(dòng),這將給我們帶來了直接的經(jīng)濟(jì)損失,甚 至可能引發(fā)巨大電力事故。為了解決上述問題,本文提出了基于ARM的DTU遙信與 遙控單元的設(shè)計(jì)。
論文首先針對(duì) DTU 的遙信遙控技術(shù)展開研究,確定了具體設(shè)計(jì)目標(biāo)和功能需求, 在完成遙信遙控單元的總體設(shè)計(jì)以及軟硬件的劃分之后,然后進(jìn)行了具體的軟硬件設(shè)計(jì) 與實(shí)現(xiàn)。硬件設(shè)計(jì)采用多板卡設(shè)計(jì)方案,包括 CPU 板、遙信遙控板、液晶板,其中遙 信遙控板可進(jìn)行熱插拔與靈活配置,能夠滿足不同的配電場(chǎng)合。CPU 板采用基于 ARM9 內(nèi)核的 i.MX287 處理器,遙信遙控板與液晶板采用基于 ARMv7 架構(gòu)的 32 位芯片 STM32F103VE 處理器,速度快、精度高、穩(wěn)定性好。遙信遙控回路采用兩級(jí)隔離,抗 干擾性更強(qiáng)。軟件設(shè)計(jì)采用模塊化設(shè)計(jì)方案,包括 CPU 板、遙信遙控板、液晶板的軟 件設(shè)計(jì)。整個(gè)軟件設(shè)計(jì)利用了嵌入式開發(fā)技術(shù),遙信技術(shù),遙控技術(shù)等多種技術(shù),依照 IEC60870-5-101電力規(guī)約,在異步串口通信和CAN通信的基礎(chǔ)上采用多線程編程思想, 實(shí)現(xiàn)了遙信、遙控、SOE、數(shù)據(jù)存儲(chǔ)與上傳、系統(tǒng)對(duì)時(shí)、顯示與通信等配電監(jiān)控功能。 在完成整個(gè)設(shè)計(jì)之后,對(duì)遙信遙控單元的功能進(jìn)行了測(cè)試,測(cè)試結(jié)果表明,遙信遙 控單元的設(shè)計(jì)符合預(yù)期目標(biāo),具有一定的應(yīng)用價(jià)值。
As people have more and more high demand of the power quality, the supply reliabilityof power distribution network attracts more and more attention. DTU is the importantcomponent of distribution network, its teleindication unit and telecommand unit completereal-time monitoring function of running equipment in the power distribution system. Thereliability of teleindication and telecommand directly influences the power quality. However,during power grid operation period, teleindication often appears false alarm and telecommand often appears maloperation. These will bring us the direct economic losses and even may leadto huge power accidents. In order to solve the above problems, this paper puts forward thedesign of DTU teleindication and telecommand unit based on ARM.
First of all, this paper studies DTU teleindication and telecommand technology, confirming specific design aim and functional requirement. After completing the wholedesign of teleindication and telecommand unit and the partition of soft-hardware, the specificsoft-hardware design and implementation are elaborated. The hardware design adoptsmultiple boards’ solution, including CPU board, teleindication and telecommand board, LCDboard. Teleindication and telecommand board is hot-plugging and configures flexibly. It canmeet the different requirements of power distribution occasions. CPU board uses i.MX287processor based on ARM9 core. LCD board and teleindication and telecommand board use ARMv7 architecture's 32-bit STM32F103VE processor. Multi processor has thecharacteristics of fast response speed, high accuracy and good stability. The teleindication andtelecommand’s circuit uses two stage isolated optocoupler to improve counter-jammingperformance. Software design uses modularized scheme, including software design of CPUboard, teleindication and telecommand board, LCD board. The whole software design adopts the development of embedded technology, teleindication technology, telecommandtechnology etc. According to IEC60870-5-101 power protocol, using the idea ofmulti-threaded programming based on asynchronous serial communication and CANcommunication, finally realizing the distribution monitoring functions, such as teleindication, telecommand, SOE, data conservation and uploading, time setting, display andcommunication and so on.
At last, completing the whole design of the soft-hardware and testing teleindication andtelecommand unit’s functions. The test results show that the design of teleindication andtelecommand unit meets the desired goal and has a certain application value.
論文作者:秦靜。申明:網(wǎng)站文章部分來源于網(wǎng)絡(luò)轉(zhuǎn)載,若對(duì)您的利益照成侵害,請(qǐng)聯(lián)系我們,我們會(huì)刪除相關(guān)內(nèi)容,并予以道歉!
論文后續(xù)內(nèi)容,會(huì)在后面的文章更新!