1 Project overview and construction goals
With the rapid development of my country's economy, the proportion of electricity used by enterprises in the entire power supply system is increasing, and the management of electricity charges for enterprise staff dormitories has also received more and more attention from enterprise managers. Traditional post-paid electricity consumption models, single billing models and manual meter reading methods are facing many challenges. How to prevent large electricity users from defaulting on electricity bills, traditional manual meter reading has problems such as slow speed, poor reliability, and waste of human resources. Although the plug-in prepaid system that has appeared in the past few years has high technical content and many functions, it still has the disadvantages of unchangeable operation and manual operation after paying the electricity bill. According to the above-mentioned various actual situations, this article introduces in detail the remote prepaid system that automatically collects, transmits and processes the dormitory electricity consumption information through the application of the remote power sales system for the employee dormitory of Hefei Xinsheng Optoelectronics Co., Ltd. (Hefei BOE), and recharges at the same time The information is written into the electricity meter to realize the prepayment management of electricity consumption in the staff dormitory. This system can not only solve the basic meter reading function in the traditional sense, but also fundamentally overcome the shortcomings of the manual meter reading mode, providing necessary conditions for the modernization of power management.
The first phase of the staff dormitory construction of the 10.5th generation thin film transistor liquid crystal display device project of Hefei Xinsheng Optoelectronics Technology Co., Ltd. includes 4 dormitories, 3#, 4#, 5# and 6# dormitories. Each dormitory includes 199 dormitories, and the 6# dormitory building contains 99 dormitories, all of which use single-phase electricity.
2 Design of prepaid management system
In the design of the prepaid management system, factors such as the enterprise's own characteristics, the power consumption characteristics of the dormitory, and the actual load capacity of the power system are fully considered, and then the management equipment is reasonably selected. This is not only conducive to reducing the cost of system operation, but also Conducive to the realization of system functions.
2.1 Selection of metering equipment
As the staff dormitory uses single-phase electricity, and the power load does not exceed 60A, in the selection of prepaid meters, it is necessary to ensure the independence of each dormitory's measurement and the accuracy of measurement: the control unit is independent, Ensure control reliability; secondly, prepaid meters need to ensure metering reliability, have anti-theft function, can accurately measure the electrical energy in both positive and negative directions, and accumulate in the same direction to prevent the phenomenon of stealing electricity; in addition, the meter itself needs to have prepaid Charge function, can run offline, when a user exceeds the standard or owes charge, according to the manager's instruction, or according to his own judgment of the remaining power, the user can be controlled to cut off the power;
2.2 Network composition of prepaid management system
The entire prepayment system adopts a hierarchical and distributed system structure, including a supervision center, four communication sub-stations and several on-site metering units, high-reliability application servers and software and hardware systems, high-performance fieldbus technology and network communication Technology to ensure that the entire system is safe, stable and reliable, and easy to use and maintain.
The prepaid supervision center includes prepaid management server, network switch, receipt printer, UPS and Acrel-3200 prepaid management software. The software part can automatically collect the electric energy data of each user, and has the functions of single point, unit, and group collection; It can remotely control the opening and closing of each metering unit; it can remotely carry out parameter setting function and user information modification and setting for each prepaid electric energy meter; it can support printing each user's monthly electricity consumption report and single household expense list; The database adopts SQL Server database, which is stable in operation, high in security, and strong in scalability. Non-operators can't change it at will to ensure data security. It provides historical electricity consumption data for each user, including previous electricity purchase dates, electricity purchase records, and monthly electricity consumption. Records etc.
The communication sub-stations mainly include communication management machines, data acquisition boxes and other network equipment. The network structure is shown in the figure below:
2.3 Main design reference standards
GB50052-2009 "Code for Design of Power Supply and Distribution System"
DL/T 814-2002 "Function Specification for Distribution Automation System"
GB50054-2011 "Code for Low-Voltage Power Distribution Design"
DL/T 5430-2009 "Technical Regulations for the Design of Remote Monitoring Centers for Unattended Substations"
GB/T 2887-2011 "General Specification for Computer Sites"
Q/GDW 231-2008 "Technical Guidelines for Unattended Substations and Monitoring Centers"
GB/T 50063-2008 "Code for Design of Electrical Measuring Instruments for Power Installations"
Q/GDW 214-2008 "Management Regulations for Site Acceptance of Substation Computer Monitoring System"
2.4 Software function design of prepaid management system
The system is designed according to the actual needs of customers, and realizes automatic data collection, remote control, electricity bill setting, account opening, account cancellation, meter parameter setting, user information modification, setting, and report printing.
The entire system software design is divided into three major blocks, namely the centralized meter reading service system, the remote prepaid power management system, and the user query system. The centralized meter reading service program runs all year round, and remote meter reading is performed on all meters without interruption and timing; the remote prepaid system includes all the functions of account opening, electricity sales, remote control and reporting; the user inquiry machine system is used for shops to query personal information, recharge and power consumption Circumstances; In addition, the mobile phone query website can be configured, which can be used for shop users to query personal information, recharge, remote control and daily power consumption on the mobile website terminal in real time. If the conditions are met, users can also use Alipay, UnionPay and other methods to remotely self-service Purchase electricity.
The main features are as follows:
uQuick configuration, ready to use: Import the configuration of the meter and communication management machine into the system and then you can use it;
uRemote centralized meter reading: manual meter reading is eliminated, and the real-time status of the meter can be accurate to within 3 minutes;
u Support separate pricing, multiple rates, and step electricity prices: each meter can be individually set for electricity prices, tariffs and step electricity prices;
uRemote electricity sales: centralized financial management, real-time delivery of electricity, and comparison of the number of recharges to prevent cheating;
uData security: network data transmission adopts financial-grade 3DES encryption algorithm to prevent data cheating and electricity theft;
uMobile SMS reminder: When the amount is insufficient or the amount is in arrears, there are three levels of early warning, and merchants can be notified by SMS in time;
uRemote control: A series of remote control operations such as remote switching or power protection can be performed on any electric meter, which is convenient for management;
u Energy consumption analysis and query: Both users and administrators can query the daily energy consumption status of prepaid meters or various connected metering instruments;
uPersonal mobile phone query website: support mobile phone users to purchase electricity and query independently.
Using the remote prepaid power management system, without an IC card, it can realize computer remote centralized meter reading, real-time monitoring, remote recharge and remote control, and then through early warning information and SMS notification, as well as the mobile website, the property management department can complete the entire meter reading , Charging, 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 economic benefits, and also has the security function of preventing information leakage and preventing electricity theft.
1. Centralized meter reading service system
The centralized meter reading service program includes three modules. In addition to the centralized remote meter reading of all meters, which runs all year round, it also integrates the alarm SMS sending service, which can automatically generate mobile phone SMS and send it to the counterparty. For users, this function needs to be used in conjunction with the hardware SMS modem.
By default, the system performs a remote centralized meter reading for all meters in half an hour, and the time interval supports personalized configuration.
2. Remote prepaid power management system
The system is divided into five modules, which are operator login module, system configuration module, user management module, electricity sales management module, and report center module.
1. Login management: manage operator accounts and authority assignments, view system logs and other functions;
2. System setting: configure the building, communication management machine, instrument and default parameters;
3. User management: perform operations such as account opening, account cancellation, remote opening and closing, meter reading export and record query for shop users;
4. Electricity sales management: remotely sell electricity, return electricity, reconcile, and record inquiries on the meter that has opened an account;
5. Report Center: Provides inquiries such as electricity sales financial reports, energy consumption reports, and alarm reports.
Board
land
Tube
reason
1.
Re-login
Re-login to the electricity sales system
2.
Operator management
Operators can be managed
3.
authority management
Assign different permissions to operators
4.
Operation log view
View operator operation log
5.
Modify operator password
Modify operator password
Tie
Unify
Assume
Set
6.
Building group setting
This function is used to maintain a collection with one or more power-consuming units, such as a unit with a building as a collection
7.
Communication management machine settings
Used to maintain the information of all communication management machines
8.
Instrument setting account number setting
Used to maintain the information of all meters, support batch import
9.
Account number setting
Maintain store number information
10.
Default parameter settings
The default settings of some common parameters, mainly including "default power threshold", "collection time interval", "default alarm amount", "default electricity price", "hoarding amount upper limit", "alarm SMS number"
guest
Household
Tube
reason
11.
Open an account
Maintain user information, perform account opening operations on the meter, support the transfer of the amount of the old meter, support one account with multiple meters, and support the user to add a meter after opening an account
12.
Account opening inquiry
Query the records of all currently opened accounts
13.
Account cancellation
After the user cancels the account, all tables linked to the user will execute the cancel action, and the system automatically generates the cancel record
14.
Account cancellation query
Query historical account cancellation records
15.
Batch operation
1) Query the status of all instruments, including remaining amount, opening and closing status, alarm information, etc.;
2) Electricity price issuance operation;
3) Set up and issue operations;
4) Power protection, charge control opening, and direct opening operation;
5) Export the real-time status of all tables to XLS.
16.
Meter reading history query
Provide single meter reading history record query
Sell
Electricity
Tube
reason
17.
Selling electricity
Sell ​​electricity to users who have opened an account, support receipt printing, and automatically generate electricity sales records
18.
Electricity Sales Inquiry
Electricity Sales Record Inquiry
19.
Retreat
Return the call to the user account that has opened an account
20.
Call back query
Retirement record query
twenty one.
Rush
Perform a repair and corrective operation after the wrong operation when the power is sold and the power is returned
Report
surface
middle
Heart
twenty two.
Real-time alarm record report
Statistics query real-time alarm records
twenty three.
Daily sales report
Query daily settlement of financial statements
twenty four.
Monthly sales report
Query monthly financial statements
25.
Annual sales report
Query annual financial statements
26.
Inquiry Report of Lost Connection Form
Lost contact table query
27.
Report of Lost Communication Management Machine
Inquiry of lost communication management machine
28.
Energy consumption analysis report
Query electricity consumption on a daily basis by selecting the date range and the geographic location to be queried (by building, floor or account number)
29.
Energy consumption query of metering instrument
It can query the energy consumption difference generated by the connected various other metering instruments of our company (ACR/PZ/DTSF, etc.) according to the time period, metering loop and other conditions, as well as the remote meter reading value
30.
Alarm record query
Query historical alarm records
For account opening, the system not only supports one household with one meter, but also supports the need of one household with multiple meters; at the same time, it supports and solves the problem of transferring the amount of old meters when the new and old meters are switched after the project transformation; supports peak and valley electricity prices, and supports one meter One electricity price; the threshold of power overload can be set for the single meter, and the two-level threshold of the single meter amount alarm can also be set.
In batch remote operation scenarios, the system provides a number of functions. Different colors are displayed for account opening, alarm 1, alarm 2, arrears, no account opening, and disconnection status; and it supports remote control of the instrument and remote control command types. as follows:
1. Electricity price issuance; 2. Setting issuance (issuing alarm amount threshold and overload power threshold); 3. Guaranteed power (mandatory meter closing); 4. Resuming prepayment (automatic tripping mode for arrears); 5. Switch off (forced power off); 6. Export meter reading (export all current meter status to EXCEL)
Selling electricity
The system also connects the electric energy metering instrument to the system, and provides auxiliary energy consumption query reports after remote centralized meter reading, which provides a strong basis for energy consumption analysis, energy use comparison, and safe electricity use.
The system also provides multiple reports for inquiries, including daily/monthly/yearly financial sales statistics, lost connection/communication management machine inquiry reports, energy consumption inquiry reports, real-time alarm/historical alarm inquiry reports, and support for export. Users can check their own electricity recharge information through the mobile phone website.
hand
machine
net
stand
1.
Electricity information query
Query the electricity consumption per day during the time period
2.
remote control
Remotely control the power on and off of your dormitory
3.
Recharge record query
Check your own recharge record
4.
Self-service power purchase
Self-service power purchase through Alipay and UnionPay
5.
Personal information inquiry
User password modification, display account opening date, all recharge records, current remaining amount and other queries
3. Receipt printing
When selling electricity, returning electricity, and opening an account, the system supports the function of printing triple documents, and the format can be freely customized after confirmation by the customer.
4. Mobile phone SMS alarm
Acrel-3200 remote prepaid system supports mobile phone SMS alarm function. Information such as insufficient electricity bill balance and arrears can be sent to the designated merchant's mobile phone through the SMS alarm module, so that users can understand electricity bill information in time. The SIM card is provided by Party A and recharged regularly.
5. Third-party platform payment and query functions
Acrel-3200 remote prepayment system supports WeChat and Alipay payment functions.
3 Significance of prepaid management system
To sum up, the intelligent management of enterprise electricity consumption is an unstoppable trend, and the prepaid management system for enterprise employee dormitories, as part of the intelligent management of enterprise electricity consumption, has become an important part of enterprise employee dormitory electricity management. Means, to help the logistics management department to provide a solution to the large amount of human and material consumption caused by the inconsistent payment time and the inconsistent payment method; at the same time, through the online management of the staff dormitory power consumption, on the one hand, the staff and the power distribution area are isolated , It can improve the safety of the employees’ dormitories and prevent accidents caused by illegal electrical appliances. On the other hand, it can also improve the enterprise’s power management level and reduce unnecessary power waste.
About the author: You Xiaoyun, female, undergraduate Ankerui Electric Co., Ltd., the main research direction is smart grid power supply and distribution Email: mobile QQ
Sdec 0-20Kw Diesel Generator,Sdec Soundproof Power Generator,Sdec Mobile Power Generator,Sdec Canopy Power Generator
Shanghai Kosta Electric Co., Ltd. , https://www.ksdpower.com