Talking about Remote Centralized Meter Reading

[1] The remote meter reading system aims to realize real-time and reliable remote meter reading of three meters (electricity meter, water meter and gas meter). The device adopts a three-layer network structure of star/vertical line/wireless communication to realize the remote meter reading task. N MDM(DD-862S mechanical digital ammeter) meters (for example, n=32) are connected to a data collector through a star network, and the data collector is connected to a radio station through a vertical network, and a vertical network can connect m collectors (for example, m= 128). This is a triple network structure consisting of star, vertical line and wireless type. The elements of this network structure are electricity meter, water meter or gas meter (hereinafter referred to as three meters), data collector and wireless transceiver. With the development and perfection of domestic intelligent systems, most high-grade residential quarters have installed remote meter reading systems. As an important part of modern management system, the system has played a very important role. Water meter, electricity meter, gas meter and other instruments for each household in residential quarters. Its installation location is different, some electric meters (such as electric meters) are installed centrally, and some (such as water meters) are scattered among households; This will bring difficulties to the meter reading statistics of management departments. It takes a lot of manpower and time to read meter from door to door, so it is difficult to complete meter reading at one time, and sometimes it can only be estimated. Centralized meter reading management system will make these problems become history. After using the system, there is no need to manually read meters from door to door. The measured values of all household electric meters will be uniformly copied by the center. It only takes 1 second to copy a watch, which saves time and effort. The system includes automatic meter reading of water, electricity and gas, prevention of household gas leakage, real-time on-off control of water, electricity and gas by management department and other functions. The centralized meter reading management system of residential area can realize the meter reading of electric meters, water meters, pure water meters and gas meters in the residential area network, and can automatically copy, collect fees and inquire the status on the residential area management microcomputer, record and print historical data, provide meter data interface, and manually modify, change meters and settle water, electricity and gas meters under authorization. If the corresponding modem or router is added to the management center, external remote access can be realized. The remote meter reading system mainly completes three tasks: electricity measurement or information collection, information remote transmission, background software processing and analysis. These two technologies are mature, and the key technology of meter reading system is to solve the problem of information remote transmission-communication. Power frequency distortion cross-substation remote meter reading system, with the help of distribution network (10KV and 380KV lines) as transmission channels, utilizes the characteristics that information can be directly transmitted from user nodes (380V) to substations, and summarizes a large number of scattered node communications extending to all corners of power supply to one point of substation communication, which is economical and practical.

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1, remote meter reading. The remote automatic meter reading function can be directly realized in the central control room, and a regional meter reading network centered on the central control room can be formed. 2. Reliable communication. Because the antenna is used for fixed-point communication, it can communicate for 24 hours after the installation height is completed according to the technical requirements, and it is not affected by power grid fluctuation. 3. Quick. Because of the high meter reading rate, about one meter per second, meter reading and billing can be carried out in different periods. 4. Advanced technical means. Identify the electric meter reading through electronic eyes, and strictly keep the electronic reading consistent with the electric meter reading. 5. Read regularly. According to different instructions, the central control room can periodically read the electricity meters in the network once a month, once a day or several times a day. 6. It can be integrated with the charging system.

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1, correctly identify the value displayed by the electric meter and send it back correctly. 2. The central control room can directly read the readings of on-site users' electricity meters, which can be read in batches or individually, and automatically save the read historical data. 3. Make statistics, charge and double address storage on the copied electricity meter data to form a detailed electricity consumption file. 4, can be on-site or remote power proofreading. 5. Quickly query the electricity consumption of electricity users. 6. Reading meter by time and realizing time-sharing billing can solve the problem of peak-valley electricity price according to the peak-valley period of power grid load. Management of residential users' electricity meters: automatic meter reading of users' electricity metering, automatic power off due to arrears, and monitoring of voltage qualification rate.

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Substation meter management: automatic meter reading of active and reactive power meters in substation area and line loss management of all functional parameters of 485 interface meter in substation area: background software can instruct to freeze all parameters of the selected electric meter at the same time, and count the low-voltage line loss, 10KV line loss, comprehensive loss of substation power supply and comprehensive loss of electricity sales: background software can instruct to freeze all parameters of the selected electric meter at the same time. Statistics of power supply and sales of stations, lines and substations. Automatic power-off due to arrears: the relay of the module can automatically cut off the voltage qualification rate and quality inspection of arrears users; The voltage monitoring function of the module is used to complete multi-point management of voltage quality monitoring at user points: the main station is equipped with a modem, which can be set up in power management departments, manufacturers, superior competent units and other places for multi-point online management. As a subsystem of information management, users can measure the power supply of different power sources hand in hand. Home extension services: automatic management of water meters and gas meters, municipal extension services of remote control air conditioners and other equipment: automatic management of street lamps and fire fighting, extended services of oil fields: automatic control and management of tadpole machines in oil fields, and automatic communication platform of distribution network: automatic management of switches, capacitors and other equipment.

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Meter reading system products are mainly divided into two categories, one is the master station, the other is the module terminal part 1, and the master station part (1)ZZ-2000-X:ZZ- master station; 2000- managed 2,000 electric meters, generally used in the meter management system in Taiwan Province; X- stands for the number of bus sections, and can manage at most two buses running separately at the same time (2)ZZ- 100000-X:ZZ- main station; 100000- management 100000 household table, which is generally used to manage the simultaneous interpretation system of residential stations, X- ditto (3)ZZ-xq:ZZ- main station; XQ-community management. This kind of master station is generally used for residential property management and installed at the low-voltage end of residential power supply system or property management office. The master station is equipped with 232 or 485 interface to manage electricity, gas, water and fire protection in the community. 2. Module part (1)CCZ-M-X:C- system number, C-. The range is 1-8, and a terminal can read at most 8 pulse tables (2)CCZ-485:485- representing intelligent interfaces, such as intelligent 485 tables, RTU with RS232/485 interfaces or comprehensive tester. Can read all the data in the intelligent interface unit, such as u, i, p, q, cosφφ. Users need to provide the communication protocol of intelligent interface equipment for communication (3)CCZ-J:CCZ- ditto, J- relay output, which can be used for power failure or remote control, user power supply, air conditioning control, 10KV switch control, 380V contactor switching, etc. Generally, a module only provides one relay output relay node. The node capacity is AC5A/220V, and the larger output capacity should be customized separately. (4)CCZ-U:CCZ- ditto, U voltage detection function, which can monitor the voltage qualification rate, extreme value and power outage times of a phase voltage. Note: If you need mixed functions, such as CCZ-M-X and voltage monitoring, please specify them when ordering. The 485 function is generally selected when selecting, and it is best not to combine the pulse metering function.