Anke Ruishi Qingqing

Jiangsu Ankerui Electric Manufacturing Co., Ltd. Jiangyin, Jiangsu 214405, China

Abstract: This paper introduces the remote prepaid power management system of Zhutong Wushushu Building. It uses intelligent remote prepaid electricity meter to collect the real-time electricity consumption and remaining power of each tenant, and remotely close and close the control through the intelligent remote prepaid meter. Realize the electricity after the first sale of electricity. The system adopts on-site local networking. After networking, it is transmitted to the background through fieldbus communication. The Acrel-3200 remote prepaid power management system is used to realize the charging, monitoring and management of each tenant's electricity.

Key words: Zhuhai Wutongshu Building; remote prepaid electricity meter; remote prepaid power management system; Acrel-3200;

 

0, overview

This project is located in Hengqin District of Zhuhai City. It is the distance between the high-end project of Hengqin Free Trade Zone and Macau Bridge.

The total construction area of ​​the project is about 25,079.31 m2, including seven stars, with a total construction area of ​​173,447 m2 and a building height of 188.8 m. The number of building layers is 40 floors above ground and 4 floors underground.

In this project, a set of intelligent electricity metering management system is designed for Zhuhai Wutongshu Building. The system is mainly for the nature of tenants' electricity consumption, and realizes the intelligent management of tenants' electricity consumption. To ensure the independence and safety of tenants' electricity consumption, The ADF300 multi-circuit metering box of the Encore terminal prepaid energy meter is configured for the tenant to measure the electricity consumption of each tenant independently. The communication management machine collects data of all terminal energy metering instruments through the RS-485 bus. The communication manager transmits data to the management computer over a private network. The system management software stores and processes the data to form files in the form of graphics and text required by the property management party, so as to realize the intelligent management of the tenants of the Wutongshu Building.

1, reference standard

ISO/IEC11801 "International Integrated Wiring Standards"

GB/50198 "Technical Specifications for Monitoring System Engineering"

GB50052-2009 "Design Specification for Power Supply and Distribution System"

GB50054-2011 "Design Specification for Low Voltage Distribution"

IEC 61587 "Electrical Equipment Mechanical Structure Series"

DL/T448-2000 "Technical Management Regulations for Electric Energy Metering Devices"

DL/T 698.1-2009 "Part 1: General"

DL/T 698.2-2010 "Part 2: Technical Specifications for Master Stations"

DL/T 698.31-2010 "Section 3.1: Technical Specifications for Power Information Collection Terminals - General Requirements"

DL/T/814-2002 "Functional Automation System Functional Specification"

DL/T5137-2001 "Technical Regulations for Design of Electrical Measurement and Energy Metering Devices"

GB2887 "Technical Conditions for Computing Station Sites"

GB/T18460.3 "IC Card Prepaid Power Sales System Part 3: Prepaid Electricity Meter"

2, system solution

Ankerui Acrel-3200 remote prepaid power management system is designed according to the actual situation of Wutongshu Building, adding remote prepaid meter to floor tenants, using local networking, and placing a collector in the background server position. The remote prepaid meter is connected to the collector by hand. The overall network structure is shown in the following figure: station management layer, network communication layer and field device layer.

The field device layer is mainly: remote prepaid meter. These devices are respectively installed in the electrical cabinet corresponding to the corresponding primary equipment. These devices all adopt RS485 communication interface, and realize on-site data collection through the on-site MODBUS bus networking communication.

The network communication layer is mainly: communication server, its main function is to collect the scattered devices in the field, and transmit them to the station control layer to complete the data interaction between the field layer and the station control layer.

Station control management: equipped with high-performance industrial servers, displays, UPS power supplies, printers and other equipment. The monitoring system is installed on the server to collect and display the running status of the field device and display it to the user in the form of human-computer interaction.

3, system function

The entire system software design is divided into three large blocks, namely centralized meter reading service system, remote prepaid power management system, and user query system.

The centralized meter reading service program runs all the year round, and remote meter reading is performed continuously for all the tables. The remote prepaid system includes all account opening, power selling, remote control and reporting functions; the user query machine system is used for shops to inquire personal information, recharge and electricity. Situation; in addition, you can also configure the mobile terminal query network zhan , which can be used for real-time query of personal information, recharge, remote control and daily power consumption on the mobile phone network zhan terminal. If the conditions are met, the user can also use Alipay UnionPay. Remote self-service purchase.

The main features are as follows:

â—†Quick configuration, ready to use: the meter and communication management machine configuration can be used to import into the system;

â—†Remote centralized meter reading: eliminating manual meter reading, the real-time status of the meter can be accurate to within 3 minutes;

â—† Support separate pricing, multi-rate, and ladder price: separately set electricity price, rate and ladder price for each meter;

â—†Remote sales: centralized financial management, real-time delivery of electricity, and prevention of recharge times to prevent bi;

â—† Data security: The network data transmission uses the financial level 3DES encryption algorithm to prevent data from being stolen;

â—† SMS reminder: When the amount is insufficient or the amount is owed, a total of three levels of warning can be notified to the merchant in time;

â—†Remote control: It can perform remote control or remote control on any meter to facilitate remote management.

â—† Energy consumption analysis and query: Both users and administrators can check the daily energy consumption status of prepaid meters or meters connected to each type;

â—† Personal mobile phone query network zhan: support mobile phone users to purchase their own electricity, independent inquiry.

The traditional IC card prepaid sales management system realizes the management mode of paying electricity after paying the fee first. However, since the data of the meter is dependent on the purchase of the power card, the user's power consumption data lags behind the occurrence time, which requires not only manual meter reading, but also Effective power management, monitoring and real-time control.

Using remote prepaid power management system, without IC card, computer remote centralized meter reading, real-time monitoring, remote recharge and remote control, and through warning information and SMS notification, as well as mobile phone network zhan, property management department can complete the entire copy Table, charging, control and verification work, to achieve high information and automation, greatly improve the efficiency and level of electricity marketing management, save manpower and material resources, but also improve economic efficiency, while also having the security function of preventing information leakage and electricity tampering .

1 centralized meter reading service system

The centralized meter reading service program consists of three modules. In addition to the centralized remote meter reading of all instruments at regular intervals, it also integrates the alarm SMS sending service, which can automatically generate mobile phone text messages from the electricity fee warning and arrears warning. For shop users, this feature needs to be used in conjunction with hardware messaging.

The system defaults to a remote centralized meter reading of all tables for half an hour by default, and the time interval supports personalized configuration.

2 remote prepaid power management system

The system is divided into five modules, namely operator login module, system configuration module, user (shop) management module, power sales management module, and report center module. The general operation and operation process 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 authority allocation, view system log and other functions;

2. System settings: configure the building, communication management machine, instrument and default parameters;

3. User management: perform operations such as opening an account, selling an account, remotely closing, reading and exporting records, and recording and querying for the shop user;

4. Sales management: remote sales, power-off, correction, and record inquiry for the opened accounts;

5. Report Center: Provide power sales financial statements, energy reports, alarm reports and other inquiries.

The system not only supports one household and one table for the opening of the store, but also supports the need of one household to hang multiple tables. At the same time, it supports and solves the problem of transferring the old table amount when the new and old tables are switched after the project transformation; support peak and valley electricity price, support one Table 1 electricity price; the threshold of power overload can be set for a single table, and the two-level threshold for setting a single table amount alarm is also supported.

In the batch remote operation scenario, the system provides a variety of functions, for account opening, alarm 1, alarm 2, arrears, unopened account, lost connection status have different color display; and support remote remote control of the instrument, remote control command type as follows:

1. The electricity price is issued; 2. The setting is issued (the alarm amount threshold and the overload power threshold are issued); 3. The power is guaranteed (the forced meter is closed); 4. The prepaid (the mode of the automatic trip of the arrears) is restored; Pull brake (forced power off); 6. Meter reading export (export all current table status to EXCEL)

Sale of electricity

The system also provides multiple reports for query, which are daily/month/year financial sales statistics report, lost connection table/communication management machine query report, energy consumption query report, real-time alarm/history alarm query report, and support for export. The following are the financial statements and prepaid daily usage query reports:

4 Conclusion

With the advancement of social production, while the commercial users' electricity consumption is increasing and the power supply quality requirements are constantly improving, there are also a large number of arrears of electricity charges, which greatly increases the operational risks of power supply companies. In order to enable power supply enterprises to increase the collection rate of electricity charges and avoid the economic losses caused by malicious arrears, our company provides a complete set of prepaid solutions. The system can not only receive electricity charges in advance, but also realize “pay first, then use electricity” and target users. The different nature of electricity can be selectively limited when the power supply is tight or in response to the government's call for “energy saving and emission reduction”. Through the remote prepaid system, the system realized the electricity consumption after paying the fee first, which can avoid the problem of the electricity company's electricity cost, thus alleviating the financial pressure of the commercial operation. In addition, the owner and the power distribution area are isolated to prevent private connection. The problem of stealing electricity.

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