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    Home > Active Ingredient News > Drugs Articles > Design and application of remote prepayment electric energy management system in Central South Aviation College of Wuhan business and Trade Vocational College

    Design and application of remote prepayment electric energy management system in Central South Aviation College of Wuhan business and Trade Vocational College

    • Last Update: 2019-07-17
    • Source: Internet
    • Author: User
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    Miao Jianmei, ankerui Electric Co., Ltd., Jiading, Shanghai 201801; Abstract: ankerui remote prepayment management system is an integrated system mainly composed of electric energy management software and centralized meter reading software, including computer, communication management machine, printer and other settings, which mainly completes the setting of electric energy meter parameters, user electricity sales management and power consumption management, and is easy to operate It helps real-time remote operation and monitoring of property companies, has a good human-computer interface, can effectively count and manage data, and has made effective confidentiality measures for data security It is easy to install, and it is an ideal solution to improve the management level of electricity consumption and solve the problem of charging This paper introduces the application of the remote prepayment management system in the school by taking the remote prepayment management system of Central South Aviation College of Wuhan business and Trade Vocational College as an example Key words: school; prepaid management; remote meter reading; 0 overview           the project of Central South Aviation College of Wuhan business and trade vocational college is located at No 225, Guanggu Second Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province It is an Aviation College in Hubei Province European campus architecture integrates history, humanity and ecology It is a modern university with international education and rich cultural atmosphere It is known as "Zui America Professional Aviation College in Central South Region" In order to adapt to the rapid development of China's aviation industry and cultivate more high-quality aviation talents, the campus has invested 500 million yuan to build a 700 Mu modern university park with strong cultural atmosphere, To build an aviation training center, it has the functions of student training, centralized training in regional aviation colleges, initial training of civil aviation employees, retraining of employees, and social experience, which can meet the training needs of various civil aviation positions This project is a set of remote prepayment electric energy management system designed for the project of Central South Aviation College of Wuhan Business Vocational College According to the requirement of selling electricity in advance, it is necessary to manage the electricity in advance in students' dormitories, so as to ensure that the electricity can be used after charging first 1 System structure description The whole prepayment management system mainly realizes the charge management and energy efficiency assessment of the 0.4kV power distribution system of the project of Zhongnan Aviation College of Wuhan International Trade University; the monitoring range is 480 sets of DDSY1352-NK installed in the distribution box, which is divided into 16 buses All the electric meters on the site communicate through shielded twisted pair wires and the communication management machine set in the background, and the data is processed by the communication management machine and then uploaded It is transmitted to the background of the prepaid system, after Zui, the data connection between the instruments on the bus and the monitoring host is realized, and the system functions of energy efficiency management and charge management are completed                                 These devices are respectively installed in the electrical cabinet corresponding to the corresponding primary equipment The RS485 communication interface is adopted for these devices, and the network communication is realized through the field MODBUS bus to realize the data field collection                            Station control management layer: equipped with high-performance industrial computer, display, UPS power supply, printer and other equipment The monitoring system is installed on the computer to collect and display the operation status of the field equipment, and display it to the user in the form of human-computer interaction The network instruments above     adopt RS485 interface and MODBUS-RTU communication protocol, RS485 adopts shielded wire transmission, generally adopts two wires, the connection is simple and convenient; the communication interface is half duplex communication, that is, both sides of communication can receive and send data, but only can send or receive data at the same time, and the data Zui high transmission rate is 10Mbps The    RS485 interface is a combination of balanced driver and differential receiver, with enhanced anti-noise interference capability Up to 32 devices are allowed to be connected on the bus, and the large transmission distance of Zui is 1.2km 2 The main function of remote prepaid electric energy management system software design is divided into three parts: centralized meter reading service system, remote prepaid electric energy management system and user query system The centralized meter reading service program runs all the year round and performs remote meter reading for all the meters when they are not judged The remote prepayment system includes all the functions of account opening, electricity selling, remote control and report forms The user inquiry machine system is used to query personal information, recharge and electricity consumption in dormitories In addition, it can be equipped with a mobile terminal inquiry network, which can be used for dormitories users to query personal information in real time on the mobile terminal Information, recharge, remote control and daily power consumption, if the conditions are met, it also supports users to use Alipay UnionPay and other remote self service power purchase The main features are as follows: A fast configuration, namely, ready to use: the meter and communication management machine configuration can be imported into the system; B remote centralized meter reading: without manual meter reading, the real-time state of the meter Zui can be accurate to within 3 minutes; C support separate pricing, multi rate, step price: each meter can be separately set with price, rate and step price; D Remote electricity sale: centralized financial management, real-time electricity distribution, and comparison of recharge times to prevent Bi; e data security: network data transmission adopts financial level 3DES encryption algorithm to prevent data from Bi stealing electricity; F SMS reminder: when the amount is insufficient or the amount is in arrears, a total of three levels of early warning, you can notify users in time by SMS; G Remote control: it can perform a series of remote control operations such as remote switching or power protection for any electric meter, which is convenient for management; h energy consumption analysis and query: users and administrators can query the daily energy consumption of prepaid meters or various connected meters; I personal mobile phone query network: support mobile phone users to purchase electricity independently and query independently                                 Chinese style By using the remote prepayment electric energy management system, without IC card, the computer can realize remote centralized meter reading, real-time monitoring, remote recharge and remote control, and then through the early warning information and SMS notification, as well as the mobile phone network, the material management department can complete the whole meter reading, charging, control and verification work, realize high informatization and automation, and greatly improve the efficiency of electricity marketing management And level, saving human and material resources, but also improve economic efficiency, but also has the security function of preventing information leakage and electricity theft 3 Case study                             Ddsy1352-nk series prepayment metering instrument is adopted for the distribution box, which mainly measures all conventional power parameters, such as: three-phase voltage, current, active power, power factor, frequency, active electricity, residual electricity and residual amount The following functions are realized on site: 1 Centralized meter reading service system The centralized meter reading service program consists of three modules In addition to the regular and long-distance meter reading of all instruments, it also integrates the alarm SMS sending service, which can automatically generate the mobile phone SMS for the corresponding dormitory users with the amount warning of electricity charge and the arrears warning This function needs to be used with the hardware SMS Mao                      2 Remote prepayment electric energy management system     this system is divided into five modules, which are operator login module, system configuration module, user (dormitory) management module, electricity sales management module and report center module The general operation and operation process of the system are as follows All reports and records in the system support the function of Excel format export Main functions: Login management: manage the operator account and authority allocation, view the system log and other functions; system settings: configure the building, communication management machine, instrument and default parameters; user management: open an account, close an account, remotely open and close an account, export the meter reading and query the records for the dormitory users; power sale management: remotely sell, return, correct and record the opened meters Record query and other operations; report center: provide query of electricity sales financial statement, energy consumption statement, alarm statement, etc     login management system settings 1 Log in again Log in again 2 Operator management can manage operators 3 Permission management can assign different permissions to operators 4 Operation log viewing and viewing operator operation log 5 Modifying operator password 6 Building group settings This function is used to maintain a collection with one or more power consumption units For example, the communication manager is set to maintain the information of all communication managers in the building 8 The instrument setting user number is set to maintain the information of all instruments It supports the batch import of 9 The setting of maintenance dormitory number 10 The default parameter setting Default settings of some common parameters, mainly including "default power threshold", "centralized reading time interval", "default alarm amount", "default electricity price", "upper limit of backlog amount", "alarm SMS No." customer Management11 account opening Maintain the user information, open an account for the table, transfer in the amount of the old table, multiple tables for one account, add table 12 after opening an account, query all the records of the current account, close the account, close the account, all the tables attached by the user will execute the closing action, and the system will automatically generate the closing record, 14 query the historical closing record, 15 Batch operation: 1 Query the status of all instruments, including the remaining amount, opening and closing status, alarm information, etc.; 2 Electricity price issuing operation; 3 Set the issuing operation; 4 Power protection, cost control opening, direct opening operation; 5 Export the real-time status of all meters as xls 16 meter reading history query provide single meter reading history query electricity sales management report center 17 electricity sales for customers who have opened accounts, support document printing, automatically generate electricity sales records 18 electricity sales query electricity sales records query 19 electricity return for customers who have opened accounts 20 electricity return query electricity return query 21 correction Perform repair and correction operation after power sale and power return 22 real time alarm record report statistics query real time alarm record 23 day sales report query financial statement of daily settlement 24 month sales report query financial statement of monthly settlement 25 year sales report query financial statement of annual settlement 26 query statement of lost connection Xi report query 27 report of lost connection communication manager 28 energy consumption analysis report 28 energy consumption analysis report 28 energy consumption analysis report 29 energy consumption query of metering meter by day by selecting date segment and geographic location (by building, floor or household number) 29 energy consumption query of metering meter
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