Application of Power Monitoring System in Adama Industrial Park, Ethiopia

摘要：介紹阿達瑪工業園區項目，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Acrel-2000型電力監控系統實現配電室配電回路用電的實時監控和管理。

Abstract: Introduce the project of Adama industrial park, Ethiopia, which uses 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 via fieldbus and transmits it to the background. The Acrel-2000 power monitoring system realizes real-time monitoring and management of power distribution circuit power in the distribution room.

關鍵詞：智能電力儀表;Acrel-2000;電力監控系統;

Keywords: intelligent power meter; Acrel-2000; power monitoring system

0 需求分析Demand analysis

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室中進線及出線回路進行電壓、電流、功率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. Real-time online monitoring of parameters such as voltage, current, and power in the incoming and outgoing circuits of the power distribution room at the project site is required. 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 .

數據采集data collection

自動采集現場所有電量儀表的模擬量數據，自動采集現場開關狀態以及故障狀態等開關量數據。

Automatically collect analog data of all power meters on site, and automatically collect on-site switching data such as on-site switch status and fault status.

支持實時采集、自動周期采集（定時采集）可配置周期（1分鐘～24小時）。

Support real-time collection, automatic

periodic collection (timing collection) configurable cycle (1 minute to 24 hours).

支持數據傳輸正確性檢驗，異常數據自動處理。

Support data transmission correctness inspection, automatic processing of abnormal data.

支持多線程處理機制，提高數據采集效率，能同時對多個設備進行數據采集。

Support multi-threaded processing mechanism, improve the efficiency of data collection, and can collect data from multiple devices at the same time.

數據實時顯示采用配電箱主接線圖直觀顯示模式，各回路開關斷合以及故障狀態直觀可見。

The real-time data display adopts the intuitive display mode of the main wiring diagram of the distribution box, and the disconnection and fault status of each circuit switch are intuitively visible.

 數據分析與處理Data analysis and processing

數據的綜合統計、分析需要實現以下功能：

Comprehensive statistics and analysis of data need to achieve the following functions:

各設備用電數據小時、日、月、年等時間段內的統計、計算。

Statistics and calculation of the electricity consumption data of each equipment in hours, days, months, years and other time periods.

各設備的用電負荷（有功、無功）大、小、平均值計算。

Calculate the large, small and average value of the electrical load (active power, reactive power) of each device.

統計各分站及整體的用電量（有功、無功）。

Count the power consumption (active power and reactive power) of each substation and the whole.

數據查詢與展示Data query and display

要求能方便實現客戶端查詢和各級管理人員的查

詢，查詢界面能適應各級管理人員的要求能夠支持靈活的條件組合查詢和對比分析，各類統計分析的數據可靈活采用報表等多種圖表方式直觀的展示功能。

It is required to facilitate the realization of client query and query of managers at all levels. The query interface can adapt to the requirements of managers at all levels. It can support flexible condition combination query and comparative analysis. Various types of statistical analysis data can be flexibly used in reports and other charts. Intuitive display function.

數據展示功能按照不同用戶的不同的權限，分為操作層、管理層、決策層三層用能展示。

According to the different permissions of different users, the data display function is divided into three layers: operation layer, management layer, and decision-making layer.

操作層具備用能分析、累計用量、實時監測、運行記錄及比例、對比、對標分析等功能。

The operation layer has functions such as energy consumption analysis, cumulative consumption, real-time monitoring, running records and ratios, comparison, and benchmarking analysis.

管理層具備用能數據統計和分析、分類分項的對比、對標分析等功能。

The management has functions such as statistics and analysis of energy consumption data, comparison of classification and sub-items, and benchmarking analysis.

決策層具備用能數據分析、數據刪除、數據庫導入/導出等功能。

The decision-making layer has functions such as energy data analysis, data deletion, and database import/export.

權限管理authority management

要求對不同用戶賦予不同角色的權限，能授權到功能子菜單、具體檔案記錄、數據記錄等。

It is required to assign different roles to 

different users, and be able to authorize function sub-menus, specific file records, data records, etc.

系統要求具備合理完善的用戶安全控制機制，能使應用環境中的信息資源得到保護，防止信息的丟失、失竊和破壞。

The system requires a reasonable and complete user security control mechanism to protect the information resources in the application environment and prevent the loss, theft and destruction of information.

節能改造及效果評估

Energy-saving renovation and effect evaluation

要求為生產節能改造提供數據支撐，并能提供節能改造前后的效果評估。

It is required to provide data support for the energy-saving transformation of production, and can provide the effect evaluation before and after the energy-saving transformation.

參數設置parameter settings

可通過采集柜設置各回路互感器變比，各種電流電壓保護整定值。

The transformer ratio of each loop and the setting value of various current and voltage protection can be set through the acquisition cabinet.

故障判斷與報警具有故障自動判斷并采用聲光方式報警功能。報警類型包括開關故障，電壓、電流超限，現場采集模塊通訊故障，與監控系統通訊故障等。報警時間自動記入系統數據庫，方便用戶查詢，工作人員可隨時掌握變配電站實時運行狀態，發現變配電運行故障并作出相應處理，提高變配電的管理效率，提升電力系統安全性、可靠性。

Fault judgment and alarm have automatic fault judgment and use sound and light alarm function. Alarm types include switch failures, voltage and current overruns, communication failures of the field acquisition module, and communication failures with the monitoring system. The alarm 

time is automatically recorded in the system database, which is convenient for users to inquire. The staff can grasp the real-time operation status of the substation at any time, find the operation failure of the substation and distribution, and make corresponding treatments, improve the management efficiency of the substation and distribution, and enhance the safety of the power system. reliability.

2  系統方案System solutions

安科瑞Acrel-2000系統根據阿達瑪現場實際情況，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配電室的監控主機，保障了電力監控監控系統傳輸的穩定性與實時性。

According to the actual situation of Adama industrial park, the overall network structure of Acrel-2000 system adopts shielded twisted pair to directly connect to the data collector and then directly connect to the monitoring host in the power distribution room through the network cable, ensuring the transmission of the power monitoring and monitoring system. The stability and real-time performance.

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。在阿達瑪中主要指置于地下一層配電室的監控主機。

The station control management layer is the direct window of human-computer interaction for the management personnel of the power monitoring system. In the Adama Project, it mainly refers to the monitoring host placed in the power distribution room on the first underground floor.

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。串口服務器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，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 serial server is to monitor on-site intelligent instruments; the main function of Ethernet equipment and bus network is to realize the data interaction between the substation and the main station, so that the management of the power distribution system is centralized, informatized, and intelligent, and the power distribution is improved. The safety, reliability and stability of the system have achieved the goal of unattended operation.

3）現場設備層Field device layer

現場設備層是數據采集終端，主要由智能儀表組成，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 equipment layer is the data acquisition terminal, which is mainly composed of 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 for networking. Realize remote control.

系統結構圖System structure diagram

3  系統功能System functions

變電所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，紅色代表合閘，綠色代表分閘。在系統圖中可以直觀的看到每路進線和出線的運行參數和狀態，可以看到變壓器出線側的所有常規電力參數，如：三相電壓、電流、有功功率、無功功率、功率因數、頻率、有功電度等。如下圖所：

The real-time monitoring system diagram of the substation is the main monitoring screen, which mainly monitors the operating status of all circuits in the substation in real time. Red represents closing and green represents opening. In the system diagram, you can intuitively see the operating parameters and status of each incoming and outgoing line, and you can see all the conventional power parameters on the outgoing side of the transformer, such as: three-phase voltage, current, active power, reactive power, and power factor , Frequency, active power, etc. As shown in the figure below:

一次系統圖 primary system diagram

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:

報警功能實時查詢 Alarm function real-time query

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。該報表查詢阿達瑪配電室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。如下圖所示:

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 the low-voltage circuits of the incoming and outgoing lines of the Adama power distribution room, mainly including: three-phase current, 

active power and active power. 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 below:

電參數抄表Parameter meter reading

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。為值班人員提供了準確可靠的電能報表。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。 如下圖所示：

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 accurate and 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. As shown below:

電能報表 Energy report

系統通訊結構示意圖，主要顯示系統的組網結構，

系統采用分層分布式結構，同時監測間隔層設備的通信狀態。紅色表示通訊正常，綠色表示通訊故障。下圖為變電所通訊狀態示意圖。

A schematic diagram of the system communication structure, which mainly shows the network structure of the system. The system adopts a hierarchical distributed structure and monitors the communication status of the bay layer equipment at the same time. Red indicates that the communication is normal, and green indicates that the communication is faulty. The figure below is a schematic diagram of the communication status of the substation.

通訊結構示意圖Communication structure diagram

4  結束語 Conclusion

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Acrel-2000電力監控系統在阿達碼的應用，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、計算機等組成電力監控系統。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，為該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。

In the application of today’s power distribution facilities, the safety of the project’s power distribution is very important. The application of the Acrel-2000 power monitoring system in the Adama described in this 

article can realize the real-time power consumption of the power supply and distribution circuit in the power distribution room. Monitoring, not only can display the power status of the loop, but also has a network communication function, which can form a power monitoring system with a serial server, a 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 dialogs, 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, providing a true and reliable basis for the project to solve the electricity problem, and has achieved good benefits.

參考文獻 Bibliography

1.Solutions For Enterprise Micro-grid System 2020.02