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變壓器智能保護(hù)電量計(jì)量模塊的軟硬件設(shè)計(jì)-展示頁

2024-09-09 21:08本頁面
  

【正文】 .............................36 167。 系統(tǒng)原理圖 ................................................................................34 167。 小結(jié) ............................................................................................33 第 4 章 系統(tǒng)原理圖設(shè)計(jì) .......................................................................34 167。 SPI 讀操作 ..........................................................................29 167。 參數(shù)計(jì)算 ............................................................................27 167。 軟件校表設(shè)計(jì) ...........................................................................26 167。 +5V 電壓設(shè)計(jì) ............................................................................23 167。2 . 電流互感器 ........................................................................21 167。 互感器電路設(shè)計(jì) .......................................................................20 167。 相關(guān)數(shù)值的測(cè) 量 ................................................................16 167。 應(yīng)用示意圖 ........................................................................14 167。 芯 片引腳定義 .................................................................... 11 167。 電量計(jì)量芯片 ATT7026 介紹 .................................................10 167。 管腳定義 ............................................................................. 6 167。 AT89S51 單片機(jī)簡(jiǎn)介 ................................................................. 5 167。s low voltage power,having large quantity and using monitoring the various parameters of the distribution transformer operation, the timely discovery which appears in the operation of the distribution transformer and control ling the abnormal situation of the solution for optimal operation of the power grid stability, has the very vital significance. Working current, working voltage and transformer oil temperature is three main parameters which decides small and medium sized transformer safely to operate,so realtime monitoring of the three parameters can guarantee the safe operation of the transformer. This module about the electricity metering and power transformer protection, is used for realtime detection of transformer condition of electricity data such as voltage, current, power,and process overcurrent, overvoltage and undervoltage fault state in a timely manner through some control strategy for transformer. According to intelligent protection system, protection struction and working principle, the design of the transformer analyses the design goals of the transformer protection, functional and performance requirements .The hardware part which selects AT89S51 as the main control machine system uses highprecision threephase electric energy metering chip ATT7026 realtime monitoring of current and and voltage detection circuit is 河南科技大學(xué)本科畢業(yè)設(shè)計(jì)(論文) III posed of current transformer and voltage transformer. In the software design it adopts the good readability and portability programming language of KEILC in order to realize the control of the microcontroller and its peripheral equipment, which greatly increases the software development efficiency and flexibility. KEY WORDS: power transformer,overcurrent and overvoltage protection, single chip microputer,power detection 河南科技大學(xué)本科畢業(yè)設(shè)計(jì)(論文) IV 目 錄 前 言 ....................................................................................................... 1 第 1 章 變壓器智能保護(hù)系統(tǒng) ............................................................... 3 167。在軟件設(shè)計(jì)中采用可讀性和可移植性都較好的 KEILC 語言進(jìn)行編程,以此實(shí)現(xiàn)對(duì)單片機(jī)及其外圍設(shè)備的控制,使軟件開發(fā)的效率和靈活性大大提高。 本設(shè)計(jì)中根據(jù)變壓器智能保護(hù)系統(tǒng)保護(hù)的組成結(jié)構(gòu)與工作原理,分析了變壓器保護(hù)的設(shè)計(jì)目標(biāo)、功能需求以及性能需求 。 工作電流、工作電壓和變壓器油溫是決定中小型變壓器是否安全運(yùn)行的三個(gè)主要參數(shù),因此,這三個(gè)參數(shù)的實(shí)時(shí)監(jiān)控對(duì)保證變壓器的安全運(yùn)行具有很大的作用。河南科技大學(xué)本科畢業(yè)設(shè)計(jì)(論文) I 變壓器智能保護(hù)電量計(jì)量模塊的軟硬件設(shè)計(jì) 摘 要 在電力供配電系統(tǒng)中,配電變壓器是將電壓直接分配給低壓用戶的電力設(shè)備,數(shù)量多且應(yīng)用普遍。實(shí)時(shí)地監(jiān)測(cè)配電變壓器運(yùn)行中的各種參數(shù),及時(shí)地發(fā)現(xiàn)配電變壓器運(yùn)行中出現(xiàn)的異常情況并加以控制和解決,對(duì)于電網(wǎng)穩(wěn)定、優(yōu)化運(yùn)行具有十分重要的意義。電量計(jì)量模塊就是用來實(shí)時(shí)檢測(cè)變壓器工況的電壓、電流、功率等電量數(shù)據(jù),通過一定的控制策略對(duì)變壓器 的過流、超壓和欠壓的故障狀態(tài)進(jìn)行及時(shí)處理。 硬件部分選取 AT89S51 單片機(jī)作為系統(tǒng)主控機(jī),采用高精度三相電能專用計(jì)量芯片 ATT7026 實(shí)時(shí)監(jiān)測(cè)電流和電壓值,電流、電壓檢測(cè)電路由電流互感器和電壓互感器組成。 關(guān)鍵詞 :電力變壓器,過流過壓保護(hù),單片機(jī),電量檢測(cè) 河南科技大學(xué)本科畢業(yè)設(shè)計(jì)(論文) II THE SOFTWARE AND HARDWARE DESIGN OF POWER MEASUREMENT MODULE IN TRANSFORMER’S INTELLIGENCE PROTECTION SYSTEM ABSTRACT In the electric power supply and distribution system, distribution transformer is the power system directly assigning to a user39。 系統(tǒng)工作原理 ............................................................................ 3 167。 特性簡(jiǎn)介 ............................................................................. 5 167。 小節(jié) ............................................................................................. 9 第 2 章 電量計(jì)量模塊硬件設(shè)計(jì) ..........................................................10 167。 功能簡(jiǎn)介 ............................................................................10 167。 內(nèi)部框圖介紹 ....................................................................13 167。 系統(tǒng)復(fù)位 ............................................................................15 167。 接口模塊 ............................................................................19 167。 電壓互感器 ........................................................................20 167。 復(fù)位電路 ....................................................................................22 167。 小結(jié) ............................................................................................24 第 3 章 電量 計(jì)量軟件模塊的設(shè)計(jì) ......................................................26 167。 寄存器定義 ........................................................................26 167。 SPI 通信軟件設(shè)計(jì) .....................................................................29 河南科技大學(xué)本科畢業(yè)設(shè)計(jì)(論文) V 167。 SPI 寫操作 ..........................................................................31 167。 硬件電路圖設(shè)計(jì) .......................................................................34 167。 硬件抗干擾設(shè)計(jì) ..................................................
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