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First, the development status of smart electricity meters "full coverage, full collection, full cost control" is the construction goal of the electricity information collection system. The full cost control function is the difficulty of the nationwide power grid information collection system construction project. With the continuous improvement in the level of power management, it is imminent to change the old method of manual meter reading, and to build a remote meter reading automation system to replace the manual meter reading to fundamentally solve the problem of incomplete meter reading, miscalculation, mis-copying, missed copying, etc. And the meter reading data is not accurate on time, at the same time, inaccurate, statistical data is slow, the report period is long and other shortcomings. At this stage, all provincial power companies are using technology to remodel smart meters in large areas, realizing the transformation of users from the original mode of “first use of electricity and later payment†to “first payment and later use of electricityâ€, and strive to make residents Electricity is more intelligent and the power supply service is more human.
Second, the application of smart meter advantage The promotion and application of smart meters, can promote the power supply companies from manual meter reading to automatic meter reading; at the same time can obtain more detailed electricity data, after analysis and processing, real-time electricity price information, payment information and It informs the user by using electricity information, etc., so that it can serve the customer better and prompt the user to use electricity more scientifically and reasonably and actively participate in the load adjustment. Specifically in the following aspects.
(1) After reading the meter and implementing the smart meter, it is no longer necessary for the meter reading personnel to go to the scene to collect the copy. Instead, the data collection is complete, and the meter reading personnel basically achieve the transformation or transfer, and only need the smart meter maintenance personnel to visit the site on an irregular basis. Check and check and correct after anomalies. Thanks to the prepayment method, meter reading personnel are reduced, and the meter reading personnel are trained as smart meter maintenance personnel; the accuracy of the collected data is higher and the power supply service level is improved; the electricity bill can be calculated on a daily basis, and the daily deduction of the electricity fee can be realized. , It helps to improve the electricity rate recovery.
(II) After the implementation of the intelligentized electricity meter, due to the high accuracy of data collection, it does not require the electricity charge accounting link, but determines a fixed reading meter settlement date every month. The system automatically judges whether the electricity charge is abnormal or not. Send information on electricity charges. If there is any abnormality, an exception process will be initiated to the electricity tariff center. The electricity cost accountant will be responsible for the judgment. In the pre-paid mode, the electricity accounting personnel are reduced, and the electricity accounting personnel are trained as data collection anomaly analysis and processing personnel; since the data collection accuracy is high, the number of pieces that need to be processed due to meter reading errors is also reduced.
(III) Blackouts In the prepaid mode, blackouts are convenient, as long as the master station triggers a power outage order, the remote unit is powered off, and the customer is unable to perform the private operation.
(D) In ​​the pre-paid mode, the complex power is more advanced. According to the charging situation of the marketing system, the master station system triggers the command of the relay in real time and remotely restores the power; the power is restored in time, and the number of customer complaints will be reduced.
Third, the development prospects and countermeasures of smart meters According to the arrangement of the State Grid Corporation, during the "Twelfth Five-Year Plan" period, the country will build a smart electricity service system, complete coverage of all users, achieve all user information collection, support for comprehensive electricity tariff control Electricity information acquisition system. For power companies, the use of smart meters can eliminate the cost of manual meter reading and reduce the loss of power. In addition, the power company uses the smart meter to obtain the electricity consumption data of the customer, and then uses the Internet to return the user's reference in real time. The customer can use the time for decentralized electricity consumption (due to the high peak rate). The use of electricity is managed to save electricity. For the government, smart meters can help users save electricity and achieve the goal of energy saving and carbon reduction. For users, they can save on electricity expenses. Users can make full use of the differences between the peak and valley electricity prices to formulate their own power consumption plans, so that they can use the same amount of electricity as the least money.
Fourth, the future development trend of the field of smart meters (A) smart meter's industrial system is more perfect Smart meters are high-tech products, so the smart meter production must be integrated, so that all aspects of the smart meter industry can be controlled and managed . The smart meter industry mainly includes the following production processes: design of smart meter structure and function, professional manufacture of smart meters, promotion of smart meter industrialization, after-sales maintenance of smart meters, and development of new technologies. These production processes must be Rationalized management must be combined with relevant experience in other industries for management. In the research and development of smart meter chips, the use of current advanced technology is the best way to form core technology values, so that the smart meter industry can have long-term benefits.
(II) Function setting The function setting of the modular smart energy meter must support the concept of being updatable or writable. Therefore, it is necessary to set the modularization of the function and continuously improve the function setting of the smart energy meter. In practice, according to the smart grid operating conditions, remotely set or modify the function and program of the smart energy meter, and require all the functions are independent threads, do not interfere with each other and influence, to ensure stability and security, that is, without having to replace the entire table It also eliminates obstacles to the implementation of new technologies.
(3) The detection of the interface integrated power meter has always been a complicated labor force, and the smart meter must change the existing power meter detection mode to achieve intelligent and automated detection methods. The author believes that there are too many types of weak electrical interfaces in smart energy meters, which require frequent switching during the detection process, which leads to problems such as high labor intensity, high resource consumption, high management costs, and low efficiency. Moreover, many interface settings cannot guarantee electrical safety. Reliability, in turn, affects the accuracy of energy metering.
The development of smart grids or advanced measurement systems has placed increasing demands on smart energy meters. We can see that these requirements are in line with the trend of the times and have a profound impact on the "intelligent" effects of smart energy meters. With the launch of a new batch of electric energy meters, the popularity of smart energy meters is only a matter of time. Since it is a smart energy meter, it should also show intelligence along with its details, and the existing data processing, module design, detection methods, and interface types are insufficient to meet the application requirements for future smart energy meters. The smart power meter of the future should have information, automation, and intelligent performance characteristics in terms of appearance, use, and function, so as to provide a more efficient way for the popularity of smart energy meters.
In addition, Xiao Bian believes that meter reading during the application of smart electricity meters can be said to be a very arduous task and has many limitations. Can we follow the pattern of using natural gas to replace smart meters? That is, the IC card is pre-charged with a certain amount of fees in the inside, and the plug-and-play power consumption is carried out by receiving the relevant power interface in the home. When the user goes out home in the home, the IC card can be dialed and the instant can be done immediately. The purpose of power off, and can also reduce the potential for electrical fire.
Smart Meter Application Status and Development Trend Analysis
At this stage, during the construction of the smart grid, the actual installation and application of smart meters has also begun gradually. The State Grid has also carried out many tenders for smart meters.