Abstract: It may sound trite, but it is definitely true: the smart grid has the potential to completely transform the energyindustry. However, smart meters and grid management alone will not ensure the success of the smart grid. Unliketraditional IT networks, smart grids require consideration of energy measurement and security. To completely optimize thistechnology, smart grid designs must focus on energy measurement and security. This tutorial considers the benefits ofboth energy measurement and security and how they make machine-to-machine networks different from traditional IT.
上傳時間： 2013-10-29
上傳用戶：皇族傳媒
Abstract: Stuxnet, a sophisticated virus that damaged Iran's nuclear capability, should be an eye openerfor the world. We can choose to learn something very narrow (how to combat the Stuxnet virus) or wecan choose to focus on the larger goal of thwarting the next type of creative cyber attack. Unfortunately,critical industrial infrastructure is not currently designed with security as a key goal, leaving open multipleavenues for an educated and funded attacker to create massive problems. This tutorial outlines somebasic concepts that engineers and product definers should consider to make sure their new projects stayahead of future threats.
上傳時間： 2013-11-17
上傳用戶：llwap
Abstract: Investment in smart meters and smart grid end equipment continues to grow worldwide as countriestry to make their electric delivery systems more efficient. However, as critical as the electric deliveryinfrastructure is, it is normally not secured and thus subject to attack. This article describes the concept oflife-cycle security—the idea that embedded equipment in the smart grid must have security designed into theentire life of the product, even back to the contract manufacturer. We also talk about how life-cycle securityapplies to embedded equipment in the smart grid. Potential threats are discussed, as are potential solutionsto mitigate the risks posed by those threats.
上傳時間： 2014-12-24
上傳用戶：熊少鋒
Advances in low power electronics now allow placementof battery-powered sensors and other devices in locationsfar from the power grid. Ideally, for true grid independence,the batteries should not need replacement, but instead berecharged using locally available renewable energy, suchas solar power. This Design Note shows how to producea compact battery charger that operates from a small2-cell solar panel. A unique feature of this design is thatthe DC/DC converter uses power point control to extractmaximum power from the solar panel.
上傳時間： 2014-01-20
上傳用戶：wettetw
為了改變目前電網現場作業管理的變電巡檢、變電檢修試驗、輸電線路巡檢檢修等管理系統各自獨立運行，信息不能共享，功能、效率受限，建設和維護成本高的現狀，提出了采用B/S+C/S構架模式，將各現場作業管理模塊和生產MIS（管理系統）集成為一體的現場作業管理系統的設計方案，做到各子系統和生產MIS軟硬資源共享，做到同一數據唯一入口、一處錄入多處使用。各子系統設備人員等基礎信息來源于生產管理系統，各子系統又是生產管理系統的作業數據、缺陷信息的重要來源。經過研究試用成功和推廣應用，目前該系統已在江西電網220 kV及以上變電站全面應用。 Abstract: In order to improve the status that the substation field inspection system， substation equipments maintenance and testing system， power-line inspection and maintenance system are running independent with each other. They can?蒺t share the resource information which accordingly constrains their functions and efficiency， and their construction and maintenance costs are high. This paper introduces a field standardized work management system based on B/S+C/S mode， integrating all field work management systems based on MIS and share the equipments and employee?蒺s data of MIS，the field work data of the sub systems are the source information of MIS， by which the same single data resouce with one-time input can be utilized in multiple places. After the research and testing， this system is triumphantly using in all 220kV and above substations in Jiangxi grid.
上傳時間： 2013-11-15
上傳用戶：han_zh
光伏發電是未來新能源發電重要方向之一，而光伏變流器是光伏發電系統的核心。介紹一種基于微網理念的光伏變流器設計。以該變流器為核心的光伏發電系統可以看做一個小型的微網系統。該系統能根據外部電網情況，工作于并網模式和離網模式。介紹了該系統的各個組成部件的設計以及變流器主電路部分器件的選型。最后，由實驗樣機進行測試。試驗結果驗證了電路拓撲結構及控制方案的可行性，也說明了系統參數設計方法的正確性。 Abstract: Solar Photovoltaic generation is an important direction of new energy power generation in the future，while photovoltaic converter is the core of photovoltaic generation system. This paper deals with a study on photovoltaic inverter based on the concept of microgrid. This paper describes a system whose core component is the photovoltaic inverter，can work on grid-connected mode or run independently according to the external situation. The paper simply describes the main components of the system. At last，the prototype was produced and tested. Test result has proved feasibility of circuit topology structure and controlling scheme and shown correctness of system parameters.Key words: PV inverter； microgrid； off-grid； storage battery
上傳時間： 2014-12-24
上傳用戶：Shaikh
附件下載proteus7.8破解版包含了Proteus中文入門教程在內 Proteus Pro 7.8 sp2 漢化破解版，該Proteus 漢化破解版解決了7.2版本運行10分鐘就自動關閉的問題，是目前最Protus中最高的版本。Proteus 不僅具有其它EDA工具軟件的仿真功能，還能仿真單片機及外圍器件，它是目前最好的仿真單片機及外圍器件的工具。從原理圖布圖、代碼調試到單片機與外圍電路協同仿真，一鍵切換到PCB設計，真正實現了從概念到產品的完整設計。 Proteus 是目前世界上唯一將電路仿真軟件、PCB設計軟件和虛擬模型仿真軟件三合一的設計平臺，其處理器模型支持8051、HC11、PIC10/12/16/18/24/30/DsPIC33、AVR、ARM、8086和MSP430等，Proteus為您建立完整的電子設計開發環境。中文系統可用，不需修改 “非unicode程序的語言”設置，不用改區域語言設置，也不要安裝其他破解。 proteus7.8破解版安裝步驟： 先安裝P7.8sp2.exe，再運行"Proteus Pro 7.8 SP2破解1.0.exe"破解，再漢化。這個漢化補丁用7.5的漢化修改而來，覆蓋前注意備份原文件，如果漢化報錯，就將“漢化報錯.exe” 復制到安裝文件夾再運行。 Proteus 不僅具有其它EDA工具軟件的仿真功能，還能仿真單片機及外圍器件，它是目前最好的仿真單片機及外圍器件的工具。從原理圖布圖、代碼調試到單片機與外圍電路協同仿真，一鍵切換到PCB設計，真正實現了從概念到產品的完整設計。 Proteus中文入門教程 Proteus ISIS是英國Labcenter公司開發的電路分析與實物仿真軟件。它運行于Windows操作系統上，可以仿真、分析(SPICE)各種模擬器件和集成電路，該軟件的特點是：①實現了單片機仿真和SPICE電路仿真相結合。具有模擬電路仿真、數字電路仿真、單片機及其外圍電路組成的系統的仿真、RS232動態仿真、I2C調試器、SPI調試器、鍵盤和LCD系統仿真的功能；有各種虛擬儀器，如示波器、邏輯分析儀、信號發生器等。②支持主流單片機系統的仿真。目前支持的單片機類型有：68000系列、8051系列、AVR系列、PIC12系列、PIC16系列、PIC18系列、Z80系列、HC11系列以及各種外圍芯片。③提供軟件調試功能。在硬件仿真系統中具有全速、單步、設置斷點等調試功能，同時可以觀察各個變量、寄存器等的當前狀態，因此在該軟件仿真系統中，也必須具有這些功能；同時支持第三方的軟件編譯和調試環境，如Keil C51 uVision2等軟件。④具有強大的原理圖繪制功能。總之，該軟件是一款集單片機和SPICE分析于一身的仿真軟件，功能極其強大。本章介紹Proteus ISIS軟件的工作環境和一些基本操作。 Proteus中文入門教程目 錄 第一章 概述 2 一、進入Proteus ISIS 2 二、工作界面 3 三、基本操作 3 圖形編輯窗口 3 預覽窗口（The Overview Window） 4 對象選擇器窗口 5 圖形編輯的基本操作 5 參考1 10 參考2作原理圖仿真調試 12 四、實例一 16 電路圖的繪制 17 KeilC與Proteus連接調試 26 五、實例二 30 使用元件工具箱 30 使用狀態信息條 30 使用對話框 30 使用仿真信息窗口 30 關閉Proteus ISIS 30 四、菜單命令簡述 31 主窗口菜單 31 表格輸出窗口(Table)菜單 33 方格輸出窗口(Grid)菜單 33 Smith圓圖輸出窗口(Smith)菜單 33 直方圖輸出窗口(Histogram)菜單 33 第二章 基于51的PID爐溫度調節器的硬件設計及仿真 34
上傳時間： 2013-11-20
上傳用戶：tangsiyun
Proteus中文入門基礎教程 目 錄 第一章 概述... 2 一、進入Proteus ISIS. 2 二、工作界面... 3 三、基本操作... 3 圖形編輯窗口... 3 預覽窗口（The Overview Window）... 4 對象選擇器窗口... 5 圖形編輯的基本操作... 5 參考1. 10 參考2作原理圖仿真調試... 12 四、實例一... 16 電路圖的繪制... 17 KeilC與Proteus連接調試... 26 五、實例二... 30 使用元件工具箱... 30 使用狀態信息條... 30 使用對話框... 30 使用仿真信息窗口... 30 關閉Proteus ISIS. 30 四、菜單命令簡述... 31 主窗口菜單... 31 表格輸出窗口(Table)菜單... 33 方格輸出窗口(Grid)菜單... 33 Smith圓圖輸出窗口(Smith)菜單... 33 直方圖輸出窗口(Histogram)菜單... 33 第二章 基于51的PID爐溫度調節器的硬件設計及仿真（未完成）... 34
上傳時間： 2013-10-31
上傳用戶：hanli8870
Abstract: While many questions still surround the creation and deployment of the smart grid, the need for a reliablecommunications infrastructure is indisputable. Developers of the IEEE 1901.2 standard identified difficult channel conditionscharacteristic of low-frequency powerline communications and implemented an orthogonal frequency division multiplexing (OFDM)architecture using advanced modulation and channel-coding techniques. This strategy helped to ensure a robust communicationsnetwork for the smart grid.
上傳時間： 2013-10-18
上傳用戶：myworkpost
§1、安裝： SPB15.2 CD1～3，安裝1、2，第3為庫，不安裝 License安裝： 設置環境變量lm_license_file D:\Cadence\license.dat 修改license中SERVER yyh ANY 5280為SERVER zeng ANY 5280 §2、用Design Entry CIS(Capture)設計原理圖 進入Design Entry CIS Studio 設置操作環境\Options\Preferencses: 顏色：colors/Print 格子：Grid Display 雜項：Miscellaneous .........常取默認值
上傳時間： 2013-11-13
上傳用戶：wangchong
