Introduce the Baosteel Cultural Center, using integrated protection devices and intelligent power meters to collect various electrical parameters and status signals from the power distribution site. The system adopts the on-site local networking mode. After the network is connected, it communicates through the field bus and travels to the background. Through the Acrel-2000 power monitoring and power management system, the real-time monitoring and management of the power distribution circuit of the substation is realized.
Yang Junjun 1

1 Ankerui Electric Co., Ltd., Jiading, Shanghai 201801, China;



0 Overview

Baosteel Group Co., Ltd. (abbreviated as Baosteel) is China's most competitive steel company. From 2003 to 2007, Baosteel entered the world's top 500 for five consecutive years. In 2007, Standard & Poor's Ratings Corporation announced that Baosteel Group and Baosteel's long-term credit rating was confirmed as “A-”, and the outlook was upgraded from “stable” to “positive” in the previous year. This is the highest in Baosteel since December 2006. Another breakthrough after rating "A-". In 2007, Baosteel entered the list of “World's Most Respected Companies” by Fortune magazine for the third time.

Shanghai Baosteel Cultural Center is located at No. 1569, Mudanjiang Road, Baoshan District, Shanghai, with a building area of ​​88,000 square meters. It is a combination of culture, sports and business.

This program is a power monitoring system designed for the 35KV station and 10KV station of Baosteel Cultural Center.



1 Demand analysis

There are three substation rooms on the site, which are 35KV transformer room (35KV part and 10KV part), 1#10KV transformer room (10KV part and 0.4KV part), 2#10KV transformer room (10KV part and 0.4KV part). ). Power monitoring systems need to implement centralized data management, analysis and processing. The approximate functional requirements of the software are as follows:

Monitoring information such as voltage, current, power, power factor and frequency is refreshed in real time and displayed visually and dynamically in a single graph. Each loop sub-screen displays information such as the electrical parameters and circuit names of the loop.

A trend curve is drawn for the current of each loop to facilitate analysis of the distribution operation conditions of the loop.

The power collection function of each loop can generate power consumption reports that meet customer management requirements during the time period.

Real-time communication status display for each loop meter.

Multi-user rights management for easy hierarchical operation.

This technical condition applies to the transformer and power distribution room of Baosteel Cultural Center. Supplier products should be highly safe and reliable, easy to expand, and easy to maintain and maintain. The products provided by the supplier shall meet at least the technical conditions, but not limited to this, and its technical performance shall meet the requirements for data monitoring of the power distribution room.



2 system plan

The monitoring system mainly realizes power consumption monitoring and power management for the substation of Baosteel Cultural Center. The monitoring range is 35KV transformer room integrated protection device, multi-function instrument, DC screen, AC screen, transformer temperature controller; 1#10KV transformer room integrated protection device, transformer temperature controller, low-voltage incoming multi-function instrument; 2#10KV transformer room integrated protection device, transformer temperature controller, low-voltage incoming multi-function instrument. The system is connected to 17 integrated protection devices of 35KV transformer room, 21 multi-function meters, 1 DC screen, 2 transformer temperature controllers, which are divided into 10 buses, and the bus is directly connected to the expansion port of the industrial computer in the substation; 1#10KV transformer room 6 integrated protection devices, 4 multi-function meters, 4 transformer temperature controllers, divided into 4 buses, the bus directly connected to the data acquisition box in the substation, uploading data to 35KV through optical fiber Electric room duty room host; 2#10KV transformer room 6 integrated protection devices, 4 multi-function meters, 4 transformer temperature controllers, divided into 4 buses, the bus directly connected to the data acquisition box in the substation, through The optical fiber uploads data to the 35KV transformer room duty room host, thereby implementing data communication between the meter on the bus and the monitoring host on the monitoring host. As shown in the figure below: station management layer, network communication layer and field device layer.



System network topology

1) Station management

The management of the station control management system for the power monitoring system is a direct window for human-computer interaction. In the main refers to the industrial computer, display, UPS, etc. placed in the duty room.

2) Network communication layer

The communication layer is mainly composed of NPORT5410 serial server, Ethernet device and bus network. The main function of NPORT5410 serial server is to monitor on-site intelligent instrument, integrated protection device, DC screen, transformer temperature controller; the main function of Ethernet equipment and bus network is to realize data interaction, make distribution system management centralized, information and intelligent. It greatly improves the safety, reliability and stability of the power distribution system, and truly achieves the goal of unattended operation.

3) Field device layer

The field device layer is a data acquisition terminal, which is mainly composed of a smart meter, an integrated protection device, a DC screen, and a transformer temperature controller. The smart meter is connected to the communication server through a shielded twisted pair RS485 interface and a MODBUS communication protocol bus type connection. The server arrives at the power distribution monitoring host to perform networking and remote monitoring. Hardware Business Network Information Center)http://news.chinawj.com.cn

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