Application of power management system in transformer distribution system Renovation project of Inner Mongolia Meng Niu Dairy (Group) Co., Ltd. 

0 概述 Overview

隨著社會經(jīng)濟(jì)發(fā)展、生產(chǎn)自動化程度的提高、勞動力的解放和生活質(zhì)量的改良，大量電能驅(qū)動設(shè)備投入到生產(chǎn)、生活中，人們對電力的依賴程度越來越高。供電的可靠性、連續(xù)性已經(jīng)成為整個社會關(guān)心的重要問題之一。由于供電系統(tǒng)具有產(chǎn)生和消費同時發(fā)生的特殊性，對整個供電過程進(jìn)行監(jiān)控，是保證供電可靠性和連續(xù)性的重要手段。

With the development of social economy, the improvement of production automation, the liberation of labor and the improvement of quality of life, a large number of electric power-driven equipment is put into production and life, and people's dependence on electricity is getting higher and higher. The reliability and continuity of power supply have become one of the important issues of concern to the entire society. Since the power supply system has the particularity of simultaneous production and consumption, monitoring the entire power supply process is an important means to ensure the reliability and continuity of power supply.

蒙牛乳業(yè)（當(dāng)陽）有限公司位于湖北省當(dāng)陽市，現(xiàn)場共有1個配電室。

Inner Mongolia Meng Niu Dairy (Group) Co., Ltd. is located in Dangyang City, Hubei Province. There is a power distribution room on site.

本次項目主要涉及蒙牛乳業(yè)（當(dāng)陽）有限公司配電室內(nèi)的網(wǎng)絡(luò)多功能儀表、微機(jī)保護(hù)等設(shè)備，監(jiān)控主機(jī)位于1層的值班室。

This project mainly involves network multi-function meters, microcomputer protection and other equipment in the power distribution room of Inner Mongolia Meng Niu Dairy (Group) Co., Ltd. The monitoring host is located in the duty room on the first floor.

1 需求分析 Demand analysis

為保證生產(chǎn)管理用電負(fù)荷的統(tǒng)計與分析及對危險源實時監(jiān)控。需要對項目現(xiàn)場的配電室中進(jìn)線及出線回路進(jìn)行電壓、電流、功率等參數(shù)進(jìn)行實時在線監(jiān)控。一旦監(jiān)控點被監(jiān)視參數(shù)異常，能夠及時檢測報警，有關(guān)人員采取必要的措施，避免安全事故的發(fā)生。自動抄表功能節(jié)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(tài)與時間，方便用戶找出非正常用電回路并且及時進(jìn)行整改，建立電能多級計量體系提供用能分析依據(jù)。

To ensure the statistics and analysis of electricity load for production management and real-time monitoring of dangerous sources. Real-time online monitoring of voltage, current, power and other parameters in 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, and 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 rectify them in time, and establish a multi-level electric energy measurement system to provide energy analysis basis .

2 系統(tǒng)方案 Structure

安科瑞Acrel-2000系統(tǒng)根據(jù)蒙牛乳業(yè)（當(dāng)陽）有限公司低壓系統(tǒng)改造電力監(jiān)控系統(tǒng)現(xiàn)場實際情況，整體網(wǎng)絡(luò)結(jié)構(gòu)采用屏蔽雙絞線直接接至數(shù)據(jù)采集器然后將數(shù)據(jù)上至配電室的監(jiān)控主機(jī)，保障了電力監(jiān)控系統(tǒng)傳輸?shù)姆€(wěn)定性與實時性。

Acrel-2000 system is based on the actual situation of the low-voltage system of Inner Mongolia Meng Niu Dairy (Group) Co., Ltd. to transform the power monitoring system on site. The overall network structure uses shielded twisted pair to directly connect to the data collector and then send the data to the power distribution room for monitoring The host ensures the stability and real-time transmission of the power monitoring system.

1）站控管理層 Control Centre

站控管理層針對電力監(jiān)控系統(tǒng)的管理人員，是人機(jī)交互的直接窗口。在蒙牛乳業(yè)（當(dāng)陽）有限公司低壓系統(tǒng)改造電力監(jiān)控系統(tǒng)工程中主要指置于一層配電室的監(jiān)控主機(jī)。

The control centre is the direct window of human-computer interaction for the management personnel of the power monitoring system. In Inner Mongolia Meng Niu Dairy (Group) Co., Ltd. low-voltage system transformation power monitoring system project, it mainly refers to the monitoring host located in the power distribution room on the first floor.

2）網(wǎng)絡(luò)通訊層 Network

通訊層主要是由采集器、以太網(wǎng)設(shè)備及總線網(wǎng)絡(luò)組成。串口服務(wù)器主要功能是監(jiān)測現(xiàn)場智能儀表；以太網(wǎng)設(shè)備及總線網(wǎng)絡(luò)的主要功能是實現(xiàn)分站與主站之間的數(shù)據(jù)交互，使配電系統(tǒng)管理集中化、信息化、智能化，很大提高了配電系統(tǒng)的安全性、可靠性和穩(wěn)定性，達(dá)到了無人值守的目的。

The network 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 distribution system is centralized, informatized, and intelligent, which greatly improves The safety, reliability and stability of the power distribution system have achieved the goal of unattended operation.

3）現(xiàn)場設(shè)備層 Device

現(xiàn)場設(shè)備層是數(shù)據(jù)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(xié)議總線型連接接入通訊服務(wù)器，經(jīng)通訊服務(wù)器到達(dá)該配電間監(jiān)控主機(jī)進(jìn)行組網(wǎng)，實現(xiàn)遠(yuǎn)程控制。

The device 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.