Arkori Qingqing Jiangsu Ankerui Electric Appliance Manufacturing Co., Ltd., Jiangyin, Jiangsu 214405, China Abstract : This paper introduces the Yuncheng pre-paid energy management system of Chengdu Wuhou Wuyue Plaza Project. It adopts intelligent remote pre-payment power meter to collect the real-time electricity consumption and remaining electricity of each merchant, and remotely control the switch-off by intelligent remote prepayment meter. In order to achieve electricity after the sale of electricity. The system adopts the on-site local networking method. After networking, it is transmitted to the back-end via fieldbus communication. The Acrel-3200 remote pre-paid power management system realizes the charging, monitoring and management of each merchant's electricity consumption. Keywords: Chengdu Wuhou Wuyue Plaza; remote prepaid meter; DTSY1352-NK; remote prepaid power management system; Acrel-3200;  0 Overview Wuhou Wu Yue Plaza project settled in Wuhou Xin Business District - Wuhou New City, the project area office building crowds, residents gathered, and the project aims to create the first Wuhou Avenue business circle to take the theme of fashion and music, set "shopping, dining, "Industry, entertainment, friendship, art, and innovative experience" is a mid-to-high-end customer, full-service, full-featured Shopping Mall. The project totals 108,000 square meters, 1610 parking spaces, 9,000 square meters of supermarkets, 2,300 square meters of cinema, and 10,000 square meters of children's facilities. . This project provides a solution for the remote prepayment system for Chengdu Wuhou Wu Yue Plaza project. This project is a total of 5 floors in the mall. In view of the nature of electricity consumption by merchants, intelligent management of commercial electricity is implemented. In order to ensure the independence and security of electricity consumption by merchants, a one-for-one plan is adopted, and Ankerui Terminal pre-paid electricity is configured for commercial users for this project. The meter DTSY1352-NK and DDSY1352-NK measure the power consumption of each commercial user independently. The communication manager collects data of all terminal energy meters through the RS-485 bus. The communications manager transmits data to a central management computer through a dedicated network of optical fibers. The system management software stores and processes the data to form the files required by the property manager, such as graphics and texts, so as to realize the intelligent management of the power consumption of the entire store. 1 Reference standard ISO/IEC 11801 International Integrated Cabling Standard GB/50198 "Monitoring System Engineering Technical Specifications" GB50052-2009 "Design Specification for Power Supply and Distribution System" GB50054-2011 "Low Voltage Distribution Design Code" IEC 61587 "Electronic Equipment Mechanical Structure Series" DL/T448-2000 "Technical Regulations for Electric Energy Metering Devices" DL/T 698.1-2009 Part 1: General Rules DL/T 698.2-2010 Part 2: Main Station Technical Specifications DL/T 698.31-2010 "Section 3.1: Technical specifications of energy information collection terminals - General requirements" DL/T/814-2002 "Functional Specifications for Distribution Automation Systems" DL/T5137-2001 Technical Specification for Design of Electrical Measurement and Energy Metering Devices GB2887 "Technical Conditions for Computing Station Sites" GB/T18460.3 "IC card prepaid electricity sale system Part 3: prepaid electricity meter" 2 system solutions Acrel-3200 remote prepaid energy management system is designed according to the actual situation of Chengdu Wuhou Wuyue Plaza. The pre-paid meter is installed on the shopping mall merchants. The local networking is adopted. The 1#, 5th floor of B1 store #, 8 #, 10 # set the collector, remote pre-paid meter connected to the collector by hand. The overall network structure is shown in the following figure: Station control management layer, network communication layer and field device layer. The field device layer is mainly: remote prepaid meter. These devices are corresponding to the corresponding primary equipment installed in the electrical cabinet, these devices are used RS485 communication interface, through the on-site MODBUS bus network communication, data acquisition on the spot. The main network communication layer is: a communication server. Its main function is to collect the scattered data at the site collection device and transmit it to the station control layer at the same time. The data exchange between the field layer and the station control layer is completed. Station control management: equipped with high-performance industrial servers, monitors, UPS power supplies, printers and other equipment. The monitoring system is installed on the server, collects and displays the operating status of the field devices and displays them to the user in the form of human-computer interaction. Smart meter on-site connection The on-site intelligent device (remote prepaid watt-hour meter) is connected in a hand-in-hand manner through a shielded twisted pair (RVVSP2*1.0). The number of smart meters per bus is within 32, and different kinds of smart devices are connected in different On the bus, the data is then uploaded to the collector, which in turn uploads the data to the monitoring host. The specific connection diagram is as follows: 3 system function The entire system software design is divided into three large blocks, which are a centralized meter reading service system, a remote prepaid energy management system, and a user query system. The centralized meter reading service program runs all year round, and remote meter readings are performed on all tables at regular intervals. The remote prepaid system includes all functions for account opening, electricity sales, remote control, and reporting. The user query system is used for shops to check personal information, recharge and use electricity. In addition, the mobile phone terminal can also be configured to inquire about personal information, recharging, remote control, and daily power consumption on the mobile website terminal. If the conditions are met, users can also use Alipay, UnionPay, and other remote self-help methods. Purchase electricity. The main features are as follows: â—† Quick configuration, ready-to-use: You can use the meter and communication manager configuration into the system. â—† Remote centralized meter reading: Manual reading is avoided, and the real-time status of the meter can be within 3 minutes. â—† support for separate pricing, multi-rate, ladder price: each set of electricity meters can be set separately price, tariff and ladder price; â—† Long-distance power sale: centralized financial management, real-time delivery of electricity, and prevention against the number of recharges; â—† Data security: Network data transmission adopts financial 3DES encryption algorithm to prevent data from stealing electricity; â—† SMS reminder: When the amount is insufficient or the amount is in arrears, a total of three levels of early warning can notify the merchant in a timely manner by SMS; â—† Remote control: A remote control operation such as remote power-up or power-saving can be performed on any meter to facilitate management; â—† Energy consumption analysis and query: Users and administrators can query the daily energy consumption status of prepaid meters or various types of connected meters; â—†Individual mobile phone inquiries website: support mobile phone end users to purchase electricity independently and make self-inquiry. The traditional IC card prepaid electricity sales management system implements the management mode of paying electricity before payment. However, since the meter data is relied on the electricity purchase card, the user electricity data lags behind the occurrence time, and not only the manual meter reading but also the Effective power management, monitoring and real-time control. The use of remote prepaid energy management system, without IC card, can realize remote centralized meter reading, real-time monitoring, remote recharging and remote control of the computer, and then through the warning information and SMS notification, as well as the mobile website, the property management department can complete the entire meter reading , Fees, control and verification work, to achieve a high degree of information and automation, greatly improve the efficiency and level of electricity marketing management, save manpower and material resources, but also improve the economic benefits, but also has anti-electricity information leakage protection features. 1 centralized meter reading service system The centralized meter reading service program consists of three major modules. In addition to centralized remote meter reading for all instruments at regular intervals, it also integrates an alarm message sending service. Shop users, this feature needs to work with hardware SMS. By default, the system performs remote centralized meter reading for all tables for half an hour. The interval supports personalized configuration. 2 remote prepaid power management system The system is divided into five modules, namely the operator login module, the system configuration module, the user (shop) management module, the power sales management module, the report center module. The general operation and operation flow of the system are as follows: All the reports and record queries of this system support the export function of excel format. 1. Login Management: Manage operator account and permission assignment, view system log and other functions; 2. System settings: configuration of building, communication management machine, instrument and default parameters; 3. User management: Performs operations such as account opening, account cancellation, remote switching, meter reading, and record query for shop users; 4. Power sales management: remotely selling, retreating, correcting and recording inquiries to the opened accounts; 5. Report Center: Provides financial reports on electricity sales, energy use reports, and alarm reports. The system's opening of accounts for shops not only supports one household and one table, but also supports the need for one household to hang multiple tables. At the same time, it supports and solves the problem of old table amount transfer when the old and new tables are switched after the project is transformed; Table 1 Electricity prices; the power overload threshold can be set for a single table and the two-level threshold for single table amount alarms can also be set. In the batch remote operation scenario, the system provides multiple functions, with different colors for account opening, alarm 1, alarm 2, arrears, no account opening, and missing status; and supports remote control of the instrument remotely, remote command type as follows: 1. Delivery of electricity price; 2. Setting of delivery (announcement of alarm threshold and overload threshold); 3. Protection of electricity (forced meter closing); 4. Recovery of prepayment (automatic payment of arrears); Pull the brake (forced power off); 6. Meter reading export (export all current table status is EXCEL) Sale of electricity The system also provides multiple reports for inquiries, namely, date/month/year financial sales statistics report, loss of list/communications management machine query report, energy consumption query report, real-time alarm/history alarm query report, and support for export. The following is a daily report of the financial statements and prepaid schedules: 4 Conclusion With the progress of social production, while the power consumption of commercial users is increasing, and the demand for power quality is constantly increasing, there are also a large number of arrears in electricity charges, which greatly aggravates the operational risks of power supply companies. In order to increase the tariff collection rate of electricity supply companies and avoid the economic losses caused by malicious arrears, we provide a complete set of prepaid solutions. The system can not only charge electricity in advance, but also achieve “pay first, then use electricityâ€, and can also target users. The different nature of electricity consumption can selectively limit electricity when the electricity supply is tight or in response to the government's call for “energy saving and emission reductionâ€. On-site remote pre-paid systems enabled the use of electricity after the first payment, which can avoid the problem of the property company's electricity fee replenishment, thereby alleviating the financial pressure of the business just put into operation. In addition, the owner and the power distribution area are isolated, preventing private Solve the problem of stealing electricity.
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