Basic knowledge of smart meter application

1. How to install and use smart meters?

Use 1 to install smart meters. Open the cover of the terminal button of the electric meter, then connect the terminals according to the wiring diagram and turn on the power supply.

2. The user inserts the IC card with pre-purchased power into the meter according to the direction of the arrow on the card (the metal contact points to the left). The monitor displays F 1 first, then the electricity purchased this time, and then displays F2 stably. Then the display screen shows that the sum of the original remaining power plus the newly purchased power is the current remaining power. At this time, the IC card can be removed and the display screen will go out. (If the remaining power in the meter is lower than the alarm power, the display is always on, and the sum of the remaining power in the meter and the power in the power purchase card is greater than 9999kWh, and the power in the card will not be input into the meter, but will still be stored in the card. )

3. When the user uses electricity, the pulse indicator will flash. 4. During normal use, the prepaid electricity meter will automatically calculate the purchased electricity in descending order.

When the remaining power in the electric energy meter is less than 20 degrees, the display displays the current remaining power to remind users to buy electricity. When the remaining power is equal to 10 degree, the user will be reminded to buy electricity once when the power is cut off. At this point, the user needs to insert the IC card into the watt-hour meter to restore power supply once.

When the remaining power is zero, the power supply is stopped. 5, one meter and one card, users can only insert their own meters to input the effective power once after each new purchase.

6. The display of prepaid electric meters is usually closed. If the user needs to check the remaining power, he can insert the IC card into the electricity meter, and the display of F 1 will be zero and F2 remaining power, and the card pulling display will be turned off. 7. Every time the user inserts the IC card into the prepaid electricity meter, the electricity meter will write all the electricity consumption of the user back to the IC card. The next time the user purchases electricity, the electricity sales management system will read the data summary of the IC card to check whether the user uses electricity legally.

Electric power inspectors can also use check card to check users' electricity consumption. 8. The power supply management department sets the maximum power load of users according to the actual situation.

When the actual power load exceeds the set value, the power supply will be stopped, and the display screen of the electric meter will display "E2" to remind users to reduce the power load. Users need to insert the IC card into the meter and restore power supply.

2. How to use the smart meter remote control?

A, input code method Step 1: Find the three-digit code representing the TV you want to remotely control from the "code table".

Step 2: Press and hold the "Setup" key, then press the "Power" key, and then release these two keys. At this time, the work indicator lights up. Step 3: Enter the three-digit code you found, enter one digit, and the indicator light flashes. After entering three digits, the work indicator goes out. After setting up, you can use this remote control to remotely control the TV.

B, automatic code search method Step 1: Manually turn on the power switch of the TV to be remotely controlled, so that the TV is in the program state. Step 2: Point the remote control at the TV, first press and hold the "Settings" key, then press the "Power" key, and then release these two keys. At this time, the work indicator will light up.

Step 3: Press the volume "+"(or "-") key on the remote control once and pay attention to whether the volume on the TV is increasing (or decreasing). Repeat this operation until the TV volume increases (or decreases), stop the operation, and then press the "Set" key. At this point, the work indicator goes out and the setting is completed. Step 4: If some keys of the remote control don't work at this time, please repeat steps 2 and 3 until the remote control works on all the function operation keys of the TV.

3. Smart grid related knowledge

The concept of "smart grid" was first put forward by Obama's energy team, and then it was promoted in various countries around the world. Electric power companies, electric power research institutes and high-tech companies (including IBM, Google, SUN, etc. ) It has different definitions in different countries. Let's talk about our country here.

China State Grid Corporation defines smart grid as a unified and strong smart grid with the characteristics of informationization, automation and interaction, based on the strong grid with the coordinated development of UHV power grid and all levels of power grids, and using advanced communication, information and control technologies.

In other words, the smart grid in China must first meet the demand of power load, ensure the early intelligent construction of transmission and substation, ensure the safety and reliability of power supply, meet the economic significance and energy saving, and finally ensure the power quality and renewable energy access.

Europe and the United States focus on the real "intelligence" of power grids, such as distributed energy storage, access to all kinds of clean energy, application of smart meters, and improvement of the power grid's ability to prevent terrorist attacks.

From a technical point of view, smart grid includes the following contents: self-healing of power grid (advanced algorithm), distributed power supply (distributed application), full utilization of new energy (access and anti-interference), user's time-of-use electricity price (smart meter), electric vehicle charging (charging station) and other applications, as well as intelligent equipment (ed) and intelligent substation.

Many, the most important major is power system. Secondly, power electronics, communication, sensors and software are all related to smart grid.

4. Function description of smart meter

Application and scope of 1

DDSY540 single-phase electronic prepayment watt-hour meter is a new domestic product manufactured by advanced solid-state integration technology and SMT technology. Its characteristics are anti-stealing, high precision, high reliability, high overload and low power consumption. It is an ideal product to reform the power consumption system, realize the commercialization of electric energy, solve the difficulty of charging and adjust the load state of power grid. The power supply department can use the power sales management system software provided by our company to set the pre-purchased electricity quantity and user information in the electric card through the computer, which can be transmitted to the electric energy meter through the electric card, and can store the user's table number, table constant, user address, name and other information according to the system management needs.

2 Functions and characteristics

* Automatically measure users' electricity consumption and remind users to buy electricity in time.

* Normal display alarm: you can set the alarm value displayed normally. When the remaining amount in the user's electricity meter is the normally displayed alarm value, the electricity meter will be displayed in the normal display state, and the digital tube will display the remaining amount in the electricity meter.

* Power failure alarm: You can set the power failure alarm value. When the remaining power in the user's electricity meter is the power-off alarm value, the electricity meter will be automatically powered off, and the digital tube will display the remaining power in the electricity meter (to remind the user to buy electricity in time), and it is necessary to insert the user's electricity card once to continue power supply.

* Power-off value: When the remaining amount in the user's meter is the power-off value (the default value is 0 degrees), the electricity meter will be turned off, so it is necessary to purchase new power with an electric card, and then plug in the card to restore power supply.

* Displayed by a five-digit digital tube. When swiping the card, the following parameters are displayed in turn: F 1: remaining power, F2: last power purchase, F3: accumulated power consumption, F4: power failure alarm value, F5: number of users, and F6: number of power purchases.

* Using encryption card and dynamic encryption algorithm, the encryption is strong, the whole system data will not be decrypted, and the data in the card will remain unchanged for 10 years.

* Using high-power magnetic latching relay, short-term load current exceeds 80A without damage, low power consumption, high reliability and high safety factor.

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5. How does a smart meter know how much electricity it uses?

A, smart meter electricity query:

If users need to check the remaining power, they can insert the IC card into the electricity meter, and the display of F 1 shows the purchased power, while the display of zero shows the remaining power of F2, and the card pulling display goes out.

Insert an IC card to display the total power purchase, the number of power purchases, the last power purchase, the accumulated power consumption and the remaining power in turn.

Every time a user inserts an IC card into the prepaid electricity meter, the electricity meter will write all the electricity consumption of the user back to the IC card. The next time the user purchases electricity, the electricity sales management system will read the data summary of the IC card to check whether the user uses electricity legally. Electric power inspectors can also use check card to check users' electricity consumption.

Second, smart meters.

Smart meter is the intelligent terminal of smart grid, and it is no longer a traditional meter. In order to adapt to the use of smart grid and new energy, smart meters also have intelligent functions such as two-way multi-rate metering function, user control function, two-way data communication function of various data transmission modes, and anti-theft function. Smart meters represent the development direction of smart terminals for end users of energy-saving smart grids in the future.

strong function

1. Prepayment function: charge the electricity fee in advance, and automatically turn off the power supply when the remaining power is zero.

2. Switching mode: there are two specifications: internal switch and external control switch.

3. Memory function: The data in the following table can be saved for 10 years in case of power failure.

4. Display function: double display, the meter displays the accumulated power consumption, and the LED displays the remaining power and other information.

5. It can detect the flow that ordinary electric meters can't detect (such as sockets and wiring boards). ). Accurate billing.

6. Intelligent price adjustment mode can intelligently adjust the price of users who consume too much electricity, thus achieving the effect of energy saving and emission reduction.

6. What are the new functions of smart watt-hour meter compared with traditional watt-hour meter?

The intelligent watt-hour meter consists of measuring unit, data processing unit and communication unit, and has the functions of electric energy measurement, information storage and processing, real-time monitoring, automatic control and information interaction.

Compared with the traditional watt-hour meter, the intelligent watt-hour meter has the following functions besides the basic metering function: (1) bidirectional metering of active energy and reactive energy, and supports the access of distributed energy users. (2) It has the functions of ladder electricity price, prepayment and remote power on and off, and supports intelligent demand side management.

(3) It can monitor the power grid operation status, power quality and environmental parameters in real time, and support intelligent power consumption and energy services. (4) It has the functions of on-line monitoring, diagnosis, alarm and intelligent handling of abnormal power consumption, which meets the needs of fault handling and on-line monitoring of metering devices.

(5) Equipped with a special security encryption module to ensure the safe storage, operation and transmission of the information of the electric energy meter.