安科瑞 劉秋霞

ACREL Multifuntion Energy Meter Application  in Mozambique

摘要：本文介紹了安科瑞多功能電力儀表在莫桑比克某農場的應用以及電能管理系統解決方案。系統采用智能電力儀表采集配電現場的各種電參量和開關信號，采用現場就地組網的方式，組網后通過現場總線通訊并遠傳至后臺。通過Acrel-3000型電能管理系統實現變電所配電回路用電的實時監控和電能管理。

Abstract：This article introduces the application of the multi-function energy meter in a farm in Mozambique and the solution of energy management system. The system adopts intelligent power meters to collect various electrical parameter and switching signals at the distribution site and the way of local networking, communicate via field bus and upload to background after networking.

關鍵詞：電能表;智能電力儀表;電能管理系統

Keywords：Energy meter；Industrial projects；Intelligent power meter；Energy management system

0 概述 Project Overview

該農場位于莫桑比克楠普拉，主要使用了多功能電力儀表APM800和開口式互感器，用于電能和功率計量，并具有事件記錄和數據報表導出功能。

Acrel-3000型電能管理系統對變配電系統進行分散數據采集和集中監控管理。對配電系統的二次設備進行組網，通過計算機和通訊網絡將分散的配電所的現場設備連接為一個有機的整體，實現電網運行的遠程監控和集中管理。

The farm is located in Nampula, Mozambique, and mainly uses a three-phase electric energy meter APM800 and split core current transformers.It is used for electric energy and power measurement, and has event recording and data report export function.

Acrel-3000 energy management system provides decentralized data acquisition and centralized monitoring and management of the substation and distribution system. It networks the secondary equipment of the power distribution system, connects the field equipment of scattered substation into an organic whole through computer and communication network, realizes remote monitoring and centralized management of grid operation.

1 系統介紹 System Introduction

本監控系統采用分層分布式結構，即設備層，通訊層與站控管理層。

現場設備層主要為多功能網絡電力儀表，這些裝置對應的一次設備分別安裝在電氣柜內，這些裝置均采用RS485通訊接口，通過現場MODBUS總線組網通訊，實現數據現場采集。

網絡通訊層主要為工業串口服務器，其主要功能為把分散在現場的采集裝置集中采集，同時遠傳至站控層，完成現場層和站控層之間的數據交互。

站控管理層設有高性能工業計算機、顯示器、UPS電源、打印機等設備。監控系統安裝在計算機上，集中采集顯示現場設備運行狀況，以人機交互的形式顯示給用戶。

This system adopts a hierarchical distributed structure,that is，the equipment layer, the communication layer and the station control management layer.

The equipment layer is mainly multi-function energy meters. The corresponding primary equipment of these devices are respectively installed in the electrical cabinet. These devices all adopt RS485 communication interface,and realize data collection through field MODBUS network communication.

The communication layer is mainly an industrial serial server.Its main function is to centrally collect the devices scattered in the field and transmit data to the station control management layer at the same time to complete the data interaction between the equipment layer and the station control management layer.

The station control management layer is equipped with high-performance industrial computers, monitors, UPS power supplies, printers and other equipment.The system is installed on the computer, collects and displays the operating status of the field equipment, and displays it to the user in the form of human-computer interaction.

2 電能管理系統主要功能 Main Function

2.1  數據采集與處理 Data acquisition and processing

數據采集是配電監控的基礎，數據采集主要由底層多功能網絡儀表采集完成，實現遠程數據的本地實時顯示。需要完成采集的信號包括：三相電壓U、三相電流I、頻率Hz、功率P、功率因數COSφ、電度EpI、遠程設備運行狀態等數據。

數據處理主要是把按要求采集到的電參量實時準確的顯示給用戶，達到配電監控的自動化化和智能化要求，同時把采集到的數據存入數據庫供用戶查詢。

Data collection is the basis of power distribution monitoring. The data collection is mainly completed by the bottom multi-functional network instrument collection to realize the local real-time display of remote data.

The signals that need to be collected include: three-phase voltage U, three-phase current I, frequency Hz, power P, power factor COSφ, electricity EpI, remote device operating status and other data.

Data processing is mainly to display the electrical parameters collected as required to users in real time and accurately to meet the requirements of automation and intelligence for power distribution monitoring. At the same time, the collected data is stored in the database for users to query.

2.2  人機交互Human-computer interaction

系統提供簡單、易用、良好的用戶使用界面。采用全中文界面，圖形顯示低壓配電系統電氣一次主接線圖，顯示配電系統設備狀態及相應實時運行參數，畫面定時輪巡切換；畫面實時動態刷新；模擬量顯示；開關量顯示；連續記錄顯示等。

The system provides a simple, easy-to-use and good user interface. Adopt full Chinese interface, graphically display the primary electrical wiring diagram of low-voltage power distribution system, display the status of power distribution system equipment and corresponding real-time operating parameters, the screen will switch regularly; the screen will be dynamically refreshed in real time; analog display; switch display; continuous recording display etc.

2.3  歷史事件Historical events

歷史事件查看界面主要為用戶查看曾經發生過的故障記錄、信號記錄、操作記錄、越限記錄提供方便友好的人機交互，通過歷史事件查看平臺，您可以根據自己的要求和查詢條件方便定位您所要查看的歷史事件，為您把握整個系統的運行情況提供了良好的軟件支持。

The historical event viewing interface mainly provides convenient and friendly human-computer interaction for users to view the fault records, signal records, operation records, and limit violation records that have occurred. Through the historical event viewing platform, you can conveniently locate the historical event you want to view according to your own requirements and query conditions, and provides good software support for you to grasp the operation of the entire system.

2.4  數據庫建立與查詢Database establishment and query

主要完成遙測量和遙信量定時采集，并且建立數據庫，定期生成報表，以供用戶查詢打印。

It mainly completes the timing collection of remote measurement and remote information, and establishes a database, and generates reports on a regular basis for users to query and print.

2.5  用戶權限管理User authority management

針對不同級別的用戶，設置不同的權限組，防止因人為誤操作給生產，生活帶來的損失，實現配電系統的安全，可靠運行。可以通過用戶管理進行用戶登錄、用戶注銷、修改密碼、添加刪除等操作，方便用戶對賬號和權限的修改。

For users of different levels, different authority groups are set to prevent the loss of production and life due to human misoperation, and realize the safe and reliable operation of the power distribution system.Users can log in, log out, modify passwords, add and delete operations through user management, which is convenient for users to modify accounts and permissions.

2.6  報表查詢Report query

報表管理程序的主要功能是根據用戶的需要設計報表樣式，把系統中處理的數據經過篩選、組合和統計生成用戶需要的報表數據。本程序還可以根據用戶的需要對報表文件采用定時保存、打印或者召喚保存、打印模式。同時本程序還向用戶提供了對生成的報表文件管理功能。

報表具有自由設置查詢時間實現日、月、年的電能統計，數據導出和報表打印等功能。

The main function of the report management program is to design report styles according to the needs of users, filter, combine and count the data processed in the system to generate report data that users need.This program can also adopt the regular saving, printing or summon saving and printing modes for the report file according to the needs of users.At the same time, this program also provides users with the function of managing the generated report files.

The report has the functions of freely setting the query time to realize the electric energy statistics of the day, month and year, data export and report printing.

3 產品介紹Product Introduction

4 項目小結Project Summary

    在當今配電設施的應用中，項目的配電安全性至關重要，本文介紹了Acrel-3000電能管理系統可以實現對配電室供配電回路用電的實時監控，不僅能顯示回路用電狀況，還具有網絡通訊功能，可以與串口服務器、計算機等組成電能管理系統。系統實現對采集數據的分析、處理，實時顯示配電室內各配電回路的運行狀態，對負載越限具有彈出報警對話框、語音提示，并生成各種電能報表、分析曲線、圖形等，便于電能的遠程抄表以及分析、研究。該系統運行安全、可靠、穩定，為工業項目解決用電問題提供了真實可靠的依據，取得了較好的效益。4  項目小結Project Summary

It is paramount important that the safety of the projects in the application of power distribution facilities.This article introduces the application of Acrel-3000 energy management system can realize real-time monitoring of power supply and distribution circuits in power distribution rooms.It can not only display the power consumption status of the loop, but also has the function of network communication, and can form an electric energy management system with serial server, computer, etc.The system realizes the analysis and processing of the collected data, real-time display of the operation status of the distribution circuits in the distribution room, pop-up alarm dialog, voice prompt for load exceeding limits, and generates various electric energy reports, analysis curves, graphics, etc., which is convenient for remote meter reading, analysis and research of electric energy.The system is safe, reliable and stable in operation, providing a true and reliable basis for industrial projects to solve power problems, and has achieved good benefits.

5 現場圖片Field picture

參考文獻Bibliography

1.Solutions for Enterprise Micro-grid System