Introduce the new 10/0.4KV substation of Shanghai University of Finance and Economics, using intelligent power meters to collect various electrical parameters and switching signals from the power distribution site. The system adopts the on-site local networking mode. After networking, it communicates to the background through the fieldbus. 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
Ankerui Electric Co., Ltd., Jiading, Shanghai 201801, China;
0 Overview
The Shanghai University of Finance and Economics campus covers a total area of ​​766 acres (37 square meters for full-time students), with one main campus and two sub-campus. Among them, the main campus is a full-time undergraduate student and international student education base, which consists of a group of national, Wuchuan and Wudong campuses. The main campus is located in Yangpu University City, adjacent to Fudan University, Tongji University, Second Military Medical University and other famous universities. The Zhongshan North 1st Road Campus is a high-level talent on-the-job training base.
The new 10KV substation project of Shanghai University of Finance and Economics is located at No. 777, Guoding Road, Shanghai, near the junction of Wuchuan Road, Zhengli Road.
This project is a power monitoring system for the new 10KV substation in Shanghai University of Finance and Economics.
1 Demand analysis
The site is a 10/0.4KV power distribution room. 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. The information of each electrical parameter, circuit name, and current limit of the circuit is displayed on each circuit sub-screen.
A trend curve is drawn for the current of each loop power meter to facilitate analysis of the loop distribution operating conditions.
The power metering function of the power meter of each loop power meter can generate the power consumption report that meets the customer management requirements within the time period.
This technical condition applies to the 0.4KV power distribution room low voltage cabinet of Shanghai University of Finance and Economics. 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 the electricity monitoring and power management of the 0.4kV power distribution system of the newly built 10/0.4KV substation of Shanghai University of Finance and Economics. The monitoring scope is remote real-time monitoring and power management for the low-voltage incoming cabinets of the substation T1 and T2 transformers, the communication cabinets and the feeder cabinet instruments. The system accesses 26 ACR120EL multi-function power meters in the substation, 6 REF611 comprehensive protection and 2 lion temperature controllers, divided into 6 buses, and the bus directly connects to the acquisition equipment in the substation; the duty room is located in the substation. The bus is directly uploaded to the substation host, thereby implementing data communication between the meter on the bus and the monitoring host on the monitoring host.
The field topology is shown in the following figure: station management layer, network communication layer and field device layer.
.png)
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 connected to the 232 serial port of the background host by the instrument bus via the rear 232/485 converter, so that the data of the intelligent power meter is uploaded to the system background.
The main function of the communication layer is to realize data interaction, which makes the distribution system management centralized, informationized and intelligent, which 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 smart meters. The smart meter is connected to the communication server through the shielded twisted pair RS485 interface, and uses the MODBUS communication protocol bus type connection to reach the communication host through the communication server. Implement remote control. Hardware Business Network Information Center)http://news.chinawj.com.cn
Our Polyurethane Ceiling roses have Various designs with flower or without flower, You may decorate one piece on the ceiling, or use Polyurethane Ceiling Rose as a decorative ornament for the ceiling or wall, Polyurethane Ceiling Rose breaks up large ceiling surfaces and light up your room. you may paint Polyurethane Ceiling Rose to combine your funiture color, this series goods give you complete new decorative room!
Our PU Ceiling Medallion collections are modeled after original historical patterns and designs. Our artisans then hand carve an original piece. Being hand carved each piece is richly detailed with deep relief, sharp lines and a truly unique touch. That master piece is then used to create a mould master. Once the mould master is created we use our high density polyurethane foam to form each medallion. The finished look is a beautifully detailed, light weight, solid construction, focal piece. The resemblance to original plaster medallions is achieved only by using our high density urethane and not vacuum formed, plastic type medallions. Medallions can be cut using standard woodworking tools to add a hole for electrical or a ceiling fan canopy. PU Ceiling Medallions are light weight for easy installation. They are fully primed and ready for your paint.
Advantages of Ceiling Rose, Ceiling Domes, Ceiling Tiles, Ceiling Rims,PU Ceiling Rose,PU Ceiling Medallion :
1. Elegant European style.
2. Many models to choose from.
3. Suitable for both DIY and construction projects.
4. Superior to Gypsum moldings.
5. Light weight, easy to transport and install.
6. Elaborate patterns.
7. Better flexibility.
8. Labor efficient
Our Service:
1.Factory direct sale with excellent quality, reasonable price and first-class service.
2.Timely delivery to every corner of the world.
3.Strong supply capacity, high-tech skills and advanced equipment can surely meet customers` requirement.
4.Launching new designs for each category every year.
5.Exquisite workmanship. All products 100% inspected.
6.Preferential freight by Famous shipping company.
7.Excellent after-sales service.
Ceiling Roses,Ceiling Domes,Ceiling Tiles,Foam Ceiling Rim,PU Ceiling Roses,PU Ceiling Medallions,Arc Mouldings,Curved Moldings,Oval Ceiling Medallions
Suntronic New Materials Technology Co., Ltd. , https://www.dsmdecor.com