摘要：介紹埃塞俄比亞阿瓦薩工業園區項目，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。系統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，通過電力管理系統實現變電所用電的實時監控和管理。

Abstract: Introduce of Hawassa industrial park project, which adopts intelligent power meters to collect various electrical parameters and switch signals at the distribution site. The system adopts the method of on-site networking. After networking, it communicates through the field bus and transmits it to the background. The power management system realizes real-time monitoring and management of the power consumption of the substation.

關鍵詞：智能電力儀表;配電室;電力管理系統

Keywords: smart power meter; power distribution room; power management system

0   概述Overview

阿瓦薩工業園區位于非州埃塞俄比亞。

本項目現場10KV配電室AH1~AH14柜內的微機保護、電能表等，監測其供配電系統在運行過程中的實時電參量等數據。

Hawassa Industrial Park is located in Ethiopia, Africa。

The protection device, electric energy meter, etc. in the AH1~AH14 cabinets of the 10KV power distribution room at the project site monitor the real-time electrical parameters and other data of the power supply and distribution system during operation.

1   需求分析Demand analysis

解決方案：

1)10kV/35kV變電站綜合自動化系統；

2)配網開關站智能監控后臺系統；

3)用電需求側協調控制平臺。

solution:

1) 10kV/35kV substation integrated automation system;

2) Intelligent monitoring background system of distribution network switch station;

3) Coordinated control platform on the demand side of electricity

為保證生產管理用電負荷的統計與分析及對危險源實時監控。需要對項目現場的配電箱內進線及出線回路進行電壓(U)、電流(I)、功率(P)等參數進行實時在線監控。一旦監控點被監視參數異常，能夠及時檢測報警，有關人員采取必要的措施，避免安全事故的發生。自動抄表功能節省了人力物力，功率趨勢曲線功能能夠直觀的顯示各回路的工作狀態與時間，方便用戶找出非正常用電回路并且及時進行整改，建立電能多級計量體系提供用能分析依據。

To ensure the statistics and analysis of electricity load for production management and real-time monitoring of hazard sources. It is necessary to conduct real-time online monitoring of parameters such as voltage (U), current (I), and power (P) in the incoming and outgoing circuit of the distribution box at the project site. Once the monitoring point is monitored with abnormal parameters, it can detect and alarm in time, and relevant personnel can take necessary measures to avoid safety accidents. The automatic meter reading function saves manpower and material resources. The power trend curve function can intuitively display the working status and time of each circuit, which is convenient for users to find abnormal power circuits and make corrections in time, and establish a multi-level electrical energy measurement system to provide energy analysis basis .

供方產品應具有高安全性與可靠性、易于擴展、便于維修與維護。供方提供的產品應至少滿足本技術條件，但不僅于此，其技術性能應滿足對配電箱數據監控的要求。

The supplier's products should have high safety and reliability, easy to expand, easy to repair and maintain. The products provided by the supplier shall meet the technical requirements at least, but not only this, but the technical performance shall meet the requirements for data monitoring of the distribution box.

2  系統方案System solutions

安科瑞Acrel-2000系統根據項目現場實際情況，整體網絡結構采用屏蔽雙絞線直接接至數據采集器然后通過網線直接接至值班室的監控主機，保障了電力管理監控系統傳輸的穩定性與實時性。

According to the actual situation of the project, the Acrel-2000 system uses a shielded twisted pair cable to directly connect to the data collector and then directly connect to the monitoring host in the duty room through a network cable. , To ensure the stability and real-time transmission of the power management monitoring system.

1）站控管理層Station control management

站控管理層針對電力監控系統的管理人員，是人機交互的直接窗口。在此項目中主要指配電室的監控主機。

The station control management layer is the direct window of human-computer interaction for the management personnel of the power monitoring system. In this project, it mainly refers to the monitoring host of the power distribution room.

2）網絡通訊層Network communication layer

 通訊層主要是由采集器、以太網設備及總線網絡組成。通訊管理機主要功能是監測現場智能儀表；以太網設備及總線網絡的主要功能是實現分站與主站之間的數據交互，使配電系統管理集中化、信息化、智能化，很大提高了配電系統的安全性、可靠性和穩定性，達到了無人值守的目的。

The communication layer is mainly composed of collectors, Ethernet devices and bus networks. The main function of the communication management machine is to monitor the on-site intelligent instruments; the main function of the Ethernet equipment and the bus network is to realize the data interaction between the substation and the main station, so that the management of the distribution system is centralized, informatized, and intelligent, which greatly improves This improves the safety, reliability and stability of the power distribution system, and achieves the goal of unattended operation.

本項目采用安科瑞自研通訊管理機ANet-2E8S1，提供2路10/100M以太網接口，8路光耦隔離RS485 和1路RS232(調試口)，可支持256臺計量設備。

This project uses Acrel's self-developed communication management machine ANet-2E8S1, which provides 2 10/100M Ethernet interfaces, 8 optocoupler isolation RS485 and 1 RS232 (debugging port), which can support 256 metering devices.

ANet intelligent communication management machine provides rich protocol library support to realize the interconnection of intelligent equipment of different secondary equipment suppliers.

3）現場設備層Field device layer

現場設備層是數據采集終端，主要由微機保護和智能儀表組成，智能儀表通過屏蔽雙絞線RS485接口，采用MODBUS通訊協議總線型連接接入通訊服務器，經通訊服務器到達該配電間監控主機進行組網，實現遠程控制。

The field device layer is the data acquisition terminal, which is mainly composed of microcomputer protection and smart meters. The smart meters are connected to the communication server through the shielded twisted pair RS485 interface and the MODBUS communication protocol bus connection. The communication server reaches the monitoring host of the power distribution room. Networking to realize remote control.

本項目采用安科瑞微機線路保護測控裝置AM5-F和嵌入式安裝電能計量裝置AEM96。

This project uses Acrel's microcomputer line protection and measurement device AM5-F and embedded installation electric energy metering device AEM96.

3  系統功能System functions

實時監控系統圖為主監控畫面，主要實時監測變電所所有回路的運行狀態。

The real-time monitoring system diagram is the main monitoring screen, which mainly monitors the operating status of all circuits in the substation in real time. .

遙信和遙測報警功能，主要完成對低壓各出線回路的開關運行狀態和負載進線監控，對開關變位和負載越限彈出報警界面指示具體的報警位置并聲音報警，提醒值班人員及時處理。負載越限值在相應權限

下可自由設置。      

The remote signaling and remote measurement alarm functions mainly complete the monitoring of the switch operation status of the low-voltage outlet circuits and the load incoming line. The pop-up alarm interface for switch displacement and load limit violations indicates the specific alarm location and sounds the alarm to remind the duty personnel to deal with it in time. The load limit can be set freely under the corresponding authority.

事件告警記錄功能，主要完成對查詢時間段內出現的報警信息事件記錄以及發生時間，為值班人員提供依據并且分析事故發生的原因，如下圖所示：

The event alarm record function mainly completes the record of the alarm information and the occurrence time of the alarm information that occurred during the query time period, and provides the basis for the staff on duty and analyzes the cause of the accident, as shown in the following figure:

參數抄表功能，主要對低壓各出線回路的電參數進線查詢。支持任意時刻電參數查詢，具備數據導出和報表打印等功能。該報表查詢項目配電箱進出線各低壓回路的電參數，主要包括：三相電流、有功功率和有功電度。該報表各回路名稱和數據庫關聯，方便用戶修改回路名稱。

Parameter meter reading function, mainly to query the electrical parameters of the low-voltage outgoing circuit. Supports electrical parameter query at any time, with functions such as data export and report printing. This report queries the electrical parameters of each low-voltage circuit of the inlet and outlet lines of the distribution box of this project, mainly including: three-phase current, active power and active energy. The name of each circuit in this report is associated with the database, which is convenient for users to modify the name of the circuit. 

用電量報表功能，可選擇時間段進行查詢，支持任意時間段電度累計查詢，具備數據導出和報表打印等功能。為值班人員提供了確可靠的電能報表。該報表各回路名稱和數據庫關聯，方便用戶修改回路名稱。如下圖所示，用戶可以直接打印報表，可以以EXCEL格式另存到其他位置。

The power consumption report function can select the time period for query, supports the cumulative query of the power consumption at any time period, and has the functions of data export and report printing. Provide reliable electric energy report for the staff on duty. The name of each circuit in this report is associated with the database, which is convenient for users to modify the name of the circuit. As shown in the figure below, the user can print the report directly, and save it to another location in EXCEL format.

4  結束語Concluding

在當今配電設施的應用中，項目的配電安全性至關重要，本文介紹的電力管理系統在阿瓦薩工業園區項目的應用，可以實現對變電所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，可以與通訊管理機、計算機等組成電力管理系統。

In the application of today’s power distribution facilities, the safety of the project’s power distribution is of paramount importance. The power management system introduced in this article is applied to the Hawassa industrial park project, which can realize power distribution in substations. The real-time monitoring of loop power consumption can not only display loop power consumption status, but also has network communication function, which can form a power management system with communication management machines and computers.

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。

The system realizes the analysis and processing of the collected data, real-time display of the operating status of each distribution circuit in the power distribution room, pop-up alarm dialog box, voice prompts for load exceeding limit, and generates various electric energy reports, analysis curves, graphics, etc., which is convenient The remote meter reading, analysis and research of electric energy show that the system is safe, reliable and stable, which provides a real and reliable basis for the project to solve electricity problems, and has achieved good benefits.