蒙牛乳业有限公司变压器配电系统改造项目的应用

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

0 概述 Overview

随着社会经济发展、生产自动化程度的提高、劳动力的解放和生活质量的改良，大量电能驱动设备投入到生产、生活中，人们对电力的依赖程度越来越高。供电的可靠性、连续性已经成为整个社会关心的重要问题之一。由于供电系统具有产生和消费同时发生的特殊性，对整个供电过程进行监控，是保证供电可靠性和连续性的重要手段。

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.

蒙牛乳业（当阳）有限公司位于湖北省当阳市，现场共有1个配电室。

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

本次项目主要涉及蒙牛乳业（当阳）有限公司配电室内的网络多功能仪表、微机保护等设备，监控主机位于1层的值班室。

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

为保证生产管理用电负荷的统计与分析及对危险源实时监控。需要对项目现场的配电室中进线及出线回路进行电压、电流、功率等参数进行实时在线监控。一旦监控点被监视参数异常，能够及时检测报警，有关人员采取必要的措施，避免安全事故的发生。自动抄表功能节省了人力物力，功率趋势曲线功能能够直观的显示各回路的工作状态与时间，方便用户找出非正常用电回路并且及时进行整改，建立电能多级计量体系提供用能分析依据。

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 系统方案 Structure

安科瑞Acrel-2000系统根据蒙牛乳业（当阳）有限公司低压系统改造电力监控系统现场实际情况，整体网络结构采用屏蔽双绞线直接接至数据采集器然后将数据上至配电室的监控主机，保障了电力监控系统传输的稳定性与实时性。

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）站控管理层 Control Centre

站控管理层针对电力监控系统的管理人员，是人机交互的直接窗口。在蒙牛乳业（当阳）有限公司低压系统改造电力监控系统工程中主要指置于一层配电室的监控主机。

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）网络通讯层 Network

通讯层主要是由采集器、以太网设备及总线网络组成。串口服务器主要功能是监测现场智能仪表；以太网设备及总线网络的主要功能是实现分站与主站之间的数据交互，使配电系统管理集中化、信息化、智能化，很大提高了配电系统的安全性、可靠性和稳定性，达到了无人值守的目的。

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）现场设备层 Device

现场设备层是数据采集终端，主要由智能仪表组成，智能仪表通过屏蔽双绞线RS485接口，采用MODBUS通讯协议总线型连接接入通讯服务器，经通讯服务器到达该配电间监控主机进行组网，实现远程控制。

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.