What are the key points for choosing a smart meter manufacturer

The most important thing is that it should be quality, quality is the life of the enterprise, the quality should be to see the production capacity, after the cooperation to ensure that the supply can be continued, there is after-sales, after-sales to do well. For example, Yongtailong's R&D and production of 8 series, nearly 20 categories, more than 400 varieties of electric energy meters, with an annual production capacity of 8 million units, is relatively powerful, and then understand the after-sales problems.

In a smart grid architecture, numerous sensors are deployed throughout the grid infrastructure to monitor, test, and communicate. As the foundation of smart city construction, smart meters are the most basic components of smart grids, and they are also important for the basic data of smart grids. Through the application of big data, better customer service can be achieved.

Specifically, smart meters have the following three advantages.

The first is to make the data collected remotely more objective and accurate. Through the power procurement system, the power marketing business system can read the customer's voltage, current, electricity consumption and other electricity consumption information in real time, and provide users with better services through big data applications. Second, it can make the power failure to get a faster response; The third is to prevent human errors caused by manual meter reading.

The future development direction of China's smart meter technology.

From mechanical energy meters to electronic energy meters, and then to smart meters, the function of electricity meters has completed the evolution from solving the most basic needs of accurate metering and automatic meter reading, to realizing pulse monitoring of power grid operation status.

At present, smart meters are not only legal instruments for electricity billing and settlement, but also important sensors for smart grids. At present, the cost control function of smart meters has been perfected, and there is still a lot of value to be tapped in the sensor function of smart meters. By analyzing the data information collected by the smart meter, you can not only see the operation of the power grid and the specific status of the equipment, but also understand the power consumption habits of power users, load changes, and carry out user demand-side management.

Smart meters will become the foundation for the digital and intelligent transformation of the power grid.

In the next stage, the development direction of smart meter technology is, first, the meter itself needs to meet the requirements of traceability of original metering data and relative separation of non-metering functions; The second is to upgrade to dual-core and multi-core, remote meter operating system, local edge computing and intelligent data processing, M2M collaboration, data sharing and security; The third is the innovation and upgrading of communications and network technology.

If you are a customer of Guangdong Power Grid Company, Guangdong Power Grid Company has achieved full coverage of smart meters in 2018, and fully opened the upgraded smart grid service of automatic collection of meter codes and automatic issuance of electricity bills; At present, manual meter reading has been canceled and automatic meter reading has been implemented, so there is no need to send staff to read meters at home. The staff uses the low-voltage centralized meter reading system to read the meter, and the master station reads the electric energy data and related electricity information of the low-voltage user's electric energy meter through the remote communication channel (wireless, wired and other channels), which is faster, more convenient and more accurate. We hope you find ours helpful.

It has the function of forward and reverse active energy metering, can store its data, and can set the combined active energy accordingly;

The active energy is accumulated and stored according to the corresponding time period, and the total, sharp, peak, flat and valley electric energy is stored.

It has a complete complex rate settlement and billing function, and can set two sets of time periods, and each set of time periods can set four rates;

Support to modify the rate table and time period table through infrared and RS485 communication interfaces;

It can store one-way or two-way total electric energy and electric energy data of various rates for the last 12 settlement days, and in the case of power failure of the electric energy meter, all data related to settlement shall be kept for at least 10 years, and other data shall be stored for at least 3 years;

The external plug-and-play carrier communication module is adopted, and the carrier communication interface has a fail-safe circuit, which works independently with the metering part;

The power line carrier communication module can realize remote real-time point reading, regular reading of meter data, and remote on-off control;

I can count it automatically, and let's control it remotely.

Spend the money of an ordinary meter and get the function of a multi-function meter.

It has remote meter reading and data reading, and remote on-off control.

<> smart meters first have the functions of metering, storage, display, and communication.

In order to realize these functions, there must be a corresponding structural part, and the current mutual inductance, voltage division and metering chip constitute the metering part of the meter;

LCD or LED and liquid crystal driver chip form the display part; E2PROM and other components realize the storage function of power information; 485. Carrier, infrared and other modules are the communication parts of the meter. In addition, smart meters also have the function of timekeeping, so they have their own clock chips, and the general error does not exceed seconds a day.

These functional structure parts are controlled by the CPU and coordinated by it. In addition, don't forget that there is also a software part of the meter, and only the hardware meter will not work properly and cannot achieve the functions specified by the user.

How to write the value project of residents' smart meters?

The smart meter consists of an LCD screen, a power purchase card slot, a pulse indicator, a trip indicator, and an information query key. When the remaining amount in the meter is insufficient, the screen backlight will automatically light up, and the alarm red light will always be on, prompting residents to purchase electricity as soon as possible.

Smart meter: a smart terminal for the smart grid.

Smart meter is a kind of "multi-functional meter" that is different from the traditional mechanical and electronic methods, and is generally called "smart meter" and "multi-function meter".

Taking the widely used smart power meters - SST-300 and SST-330 as an example, they include 3 displays, which can be installed on the panels of control devices such as switch cabinets, control cabinets, and consoles. It also includes RS485 communication interface, analog signal output, and switching output.

The so-called "smart" refers to the SST-300 or SST-330 smart meter, which can display voltage, current, active power, reactive power, apparent power, frequency, power factor, harmonic content, active power, and reactive power. and all other electrical parameters. Because it is composed of a single-chip microcomputer as the core control chip, the corresponding parameters can be set by the program, and the electrical parameters and units can be displayed "intelligently".

Moreover, the accuracy and unit of display are automatically transformed, and can be completed without manual switching.

In addition, the so-called "intelligence" is also reflected in the intelligence of the output analog signal and the switching signal, and the user can arbitrarily specify the analog signal and switching signal that needs to be output, which is convenient for future display and control needs. At the same time, the role of the communication interface provides an economical and convenient means for automatic data collection.

Finally, the SST-300 and SST-330 with all-digital circuits are adopted, which completely avoids the temperature drift of traditional transmitters and is maintenance-free. It provides the most comprehensive means for the protection and measurement of electrical circuits.

In the newly promulgated ** new buildings, it has become a standard product for energy consumption testing and is included in the necessary electrical products.

FYI. These are some of the solutions and products that we have used in our design, and they are also relatively mature. Thank you.

Smart meter is an advanced metering device based on modern communication technology, computer technology and measurement technology to collect, analyze and manage electric energy information data.

In addition to the metering function of the basic electricity consumption of the traditional electric energy meter, in order to adapt to the use of smart grid and new energy, it also has a two-way multi-rate metering function, a user-side control function, a two-way data communication function of a variety of data transmission modes, anti-theft function and other intelligent functions, which can realize remote meter reading, remote control, prepayment, ladder electricity price and other functions.

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You can see the manual of the SST-300 smart meter. The intelligence is reflected in the use of a single DAO microcomputer to the input voltage and current version.

perform calculations to derive the power of work.

Rate factor, frequency, active power, reactive power, active power, reactive power, etc. These are distinct differences from traditional digital and electricity meters. A single table that shows all electrical parameters.

Since it is all digital, it usually also comes with an RS485 communication interface. Compared with traditional analog meters, the temperature characteristics are better. In addition, its alarm signal and analog output signal are intelligent outputs, which can be specified by the user to output any signal, which is convenient and reliable.

Therefore, it has been widely adopted in the power system. It is used to replace the traditional single-function digital display meter and electric energy meter. Objects include drawer-type switchgear, as well as small smart meters such as the SST-330. It has created conditions for the intellectualization of the electrical system.

High precision and multiple functions.

For example, anti-theft, time-sharing pricing, active, reactive...