The hottest prepaid low-voltage power carrier cent

2022-10-01
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Prepaid low-voltage power carrier centralized meter reading system and its application

Abstract: relying on the low-voltage power carrier communication technology, the developed centralized meter reading application system can realize the long-distance centralized meter reading of the power charge in the station area, monitor the statistics and calculation of the total power and line loss in the station area, and effectively alleviate the problem of heavy workload of reading the power charge. However, stations that only use remote meter reading still need meter readers to send electricity bills to users and conduct manual fee collection, which still cannot meet the objective requirements of power supply bureau to reduce staff, increase efficiency and improve management level in the "electricity fee verification and collection" link

People gradually pay attention to their own safety problems

key words: low-voltage power carrier communication technology centralized meter reading application system remote meter reading relying on low-voltage power carrier communication technology, the developed centralized meter reading application system can realize the remote centralized meter reading of the electricity charge in the station area, monitor the statistics and calculation of the total electricity and line loss in the station area, and effectively alleviate the problem of heavy workload of reading electricity charges. However, stations that only use remote meter reading still need meter readers to send electricity bills to users and conduct manual fee collection, which still cannot meet the objective requirements of power supply bureau to reduce staff, increase efficiency and improve management level in the "electricity fee verification and collection" link. Relying on intelligent IC card technology, the prepaid power management system developed can realize the management mode of paying first and then using electricity. It solves the problem of difficult collection of electricity charges, but it can not implement effective electricity management and monitoring, such as line loss calculation, electricity summary and other functions in the electricity charge accounting cycle, and can not realize the automation of "copy" and "check". The prepaid low-voltage power carrier centralized meter reading system organically combines the above two technologies, thus affecting the quality of equipment. It uses low-voltage carrier communication technology, intelligent (CPU) IC card technology, internationally accepted 3DES encryption and password management technology, database management technology, wired/wireless communication network technology, and integrates the advantages of the above two application systems to realize prepaid power management, The system still has the functions of remote centralized meter reading and monitoring. It provides more reliable technical support for power supply enterprises to fully realize the automation of "copying", "checking" and "receiving", improve operation efficiency and avoid the risk of electricity charges. 1 system composition chzdj multi rate carrier meter reading concentrator, ddsd411 single-phase electronic multi-function watt hour meter, central management computer and IC card multi-function watt hour meter management software, intelligent (CPU) IC card, and handheld machine 2 Introduction to each component of the system 2.1 chzdj concentrator chzdj multi rate carrier meter reading concentrator is the central link of the prepaid low-voltage power carrier centralized meter reading system, Connect the management system computer through wired/wireless communication network, and connect the watt hour meter through low-voltage power line. Be responsible for the control of meter reading process and the reception, storage and forwarding of meter reading data. The chzdj multi rate carrier meter reading concentrator can communicate with the management software of the central management system computer in many ways: RS232 mode, built-in/external modem mode, RS485 mode, PDA infrared communication mode, GSM and GPRS communication mode. The communication between the chzdj multi rate carrier meter reading concentrator and multiple lower meter control modules carries out real-time meter reading, freezing meter reading, on/off operations on the managed watt hour meters through power carrier communication. It can be widely used in power consumption management of urban and rural residential areas, enterprises and institutions. 2.2 ddsd411 single-phase electronic multi-function electric energy meter ddsd411 single-phase electronic multi-function electric energy meter, as the terminal equipment of the prepaid low-voltage power carrier centralized meter reading system, is the main equipment for collecting and managing users' electricity data information. The main control CPU of the meter adopts a single chip microprocessor (single chip solution) specially designed for automatic meter reading and remote monitoring system; ADE7755 metering chip is used for electric energy measurement; The display adopts specially customized Chinese character led/lcd. It has the characteristics of high integration, high security, high measurement accuracy, low power consumption, rich communication interfaces, clear display and large amount of information. According to the production and use process and the different information contained in the electric energy meter, Go through the following process in sequence: · naked state (that is, the meter produced without any information) · original state (that is, the meter in which the naked state meter has input the necessary meter parameters and started the safety mechanism) · issued state (that is, the meter in which the original state meter has imported the system management information and system safety information) · operating state (that is, the meter in which the issued state meter has imported the user's personal information and safety information) And the position can be changed through IC card. The meter communicates with the concentrator through the power line carrier interface, receives the instructions from the concentrator, and uploads the measurement data, user management information and the status information of the user table according to the instructions. Realize the centralized meter reading function and real-time monitoring function of low-voltage power carrier. This table receives the setting information and user data from the system management computer through the IC card interface, and measures according to the system settings. At the same time, the measurement information of this table should be measured once in the two mutually perpendicular directions at both ends and the middle of the gauge distance. The user management information and the status information of decreasing with the weight of the vehicle body. Realize the prepayment function of various billing methods. The meter also has a variety of expansion interfaces and functions of alarm, arrearage and power-off, so as to facilitate the management department to check, manage and serve the user's power consumption. The performance indicators of the table meet the requirements of dl/t, gb/t (iec61036) and gb/t; IC card performance meets the requirements of gb/t standard; The carrier performance index conforms to the power industry standard dl/t, and the infrared communication protocol conforms to the industry standard dl/t. The meter has many characteristics, such as safety and reliability, high measurement accuracy, LCD or LED display, convenient installation and so on. It is especially suitable for electric energy measurement and control of residential users and industrial users. 2.3 IC card multi-function watt hour meter management software IC card multi-function watt hour meter management software is a supporting software specially designed for prepaid low-voltage power carrier centralized meter reading system. The software integrates energy meter file management, data acquisition, data management, anomaly analysis and IC card power sales management. It provides users with a relatively perfect man-machine interface. According to the requirements of the software function scheme, the system is divided into the following five parts: basic information management part: input basic data information, establish a database, and prepare for specific operations

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