System composition:
The system consists of three-level equipment, two-level channels and one set of system.Where Three-level equipment are electricity metering equipment, data acquisition equipment and master station equipment.
Two-level channels are the data channel (downlink channel) of data acquisition equipment and meter and the data channel (uplink channel)of data acquisition equipment and master station system.
One set of system is the smart electricity management system.
Main functions:
Automatic meter reading. There is no need to go to doors to read the meter and it will not disturb the residents, so that the residents' safety and privacy will be highly improved.
File management. It will maintain and manage the basic parameters of metering points, the basic parameters of equipment, the status of concentrator, the acquisition scheme and the operating log.
Statistical analysis. It will make classified statistics, analyze and check the data of the electricity meter through forms and charts, including the electricity meter data of users, line loss and electricity consumption of users.
Statement management. It will save and make statistics of users' electricity data and generate statements and then print them.Remote power cut and power transmission (description: the function should be supported by electricity meter).The system has the ability of remote power cut and power transmission according to actual conditions. If it detects a defaulting subscriber or illegal electricity use, the operator will send out a power cut command to cut off the current load circuit. If it meets the power transmission requirements, the operator will send out a power transmission command to connect the current load circuit.
It has the SMS and E-mail notification functions to duly inform users of their electricity use conditions.
Prepaid electricity management.It supports several modes such as WeChat, remote control and IC card.
Technical schemes:
If centralized installation is applied for meters, RS485 channel should better be applied to acquire data from collectors and meters.
If distributed installation is applied for meters, data should better be acquired through power line carrier or wireless communication.
If centralized installation and distributed installation are combined for meters, hybrid networking of channels above can be applied
Construction contents:
Electronic electricity meter that supports low voltage carrier/ 485 communication is mounted at positions requiring electricity metering. RS485 meter wiring is carried out between concertrator and meter or power line between meters is used for carrier data communication.
Through the data concentrator installed at the power distribution room/ courbuilding, the electricity data of each electricity meter is acquired automatically through the low voltage power line carrier/ 485 bus and effectively managed.
According to the metering reading scheme, the data of the concentrator ls acquired to the low voltage meter reading system master station through GPRS/CDMA and tCPP networks.
Joint debugging is carried for the equipment connected above and the system master station publishes and shares the acquired data by the means of WEB, statements and database after analysis and management.
Features:
It supports several communication modes, such as GPRS/CDMA and Ethernet thus it can adapt to the rich diversity of communication networks and utilization of communication resources of users.
Openness. Adopting C# development, it has good portability. It follows relevant softv ware standards and industrial standards.
Expandability. It supports the data increase of master sfation equipment, acquisition terminal and electricity meter and requires no modification of application program
Easy maintenance. The system applies disc mounting ,ensuring simple operationjand convenience for remote maintenance management.
