An intelligent electric energy meter with the function of monitoring and protecting electric power failure
A smart energy meter and power failure technology, applied in the field of smart energy meters, can solve the problems of limited power metering, billing and related information interaction functions, technology and equipment that cannot meet the needs of smart grids, weak technology and equipment, etc., to achieve The effect of preventing automatic isolation of fault points, improving the correct rate of protection action, and reducing power loss and economic loss
Inactive Publication Date: 2016-03-16
王金泽
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Problems solved by technology
[0006] The low-voltage power grid is the weakest link in the technology and equipment of smart grid construction. At present, the technology and equipment in the field of low-voltage power grid are difficult to meet the needs of smart grid.
Specifically, the smart energy meter is still limited to the functions of electric energy metering, billing and related information interaction, and the intelligent low-voltage switchgear is still limited to the functions of electrical monitoring and electrical protection. Intelligent terminal equipment with various functions
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[0078] Method 1: Such as figure 1 As shown, the communication interface 8 of the core module is electrically connected to the central processing unit CPU12 and the communication module 9 respectively, and the remote master station 16 and the communication module 9 communicate with each other using a data communication protocol.
[0079] Method 2: Such as figure 2 As shown, a concentrator 17 is also included. The remote master station 16 and the concentrator 17, and the concentrator 17 and the communication module 9 of the core module respectively communicate with each other using a data communication protocol. The concentrator 17 collects and stores the data of each collection terminal or electric energy meter, and can simultaneously realize the data exchange between the electric energy meter and the electricity consumption information collection master station or handheld intelligent terminal equipment.
[0080] The present invention has three implementation modes according to the...
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A smart electricity meter with a function of monitoring and protecting power failure comprises a metering chip, a leakage current sampling circuit, a phase current sampling circuit, a phase voltage sampling circuit, a CPU (central processing unit), a power module and a low voltage breaker. The leakage current sampling circuit is electrically connected with the metering chip which is mutually electrically connected with the CPU. The CPU is electrically connected with the low voltage breaker through a trip output port. The low voltage breaker is electrically connected with the CPU through a status acquisition interface. The invention further provides a power failure monitoring and controlling method of the smart electricity meter. The smart electricity meter has the advantages that the reliable power module for power failure protection and control is provided, various types of power failure warning and protection are provided, failure warning and failure protection for voltage, current, power and the like are achieved for power users, failure spots are prevented and isolated, economic loss and personal safety accidents due to failure of electric circuit equipment of the users are prevented and reduced, and reliability of low voltage grids is effectively improved.
Description
Technical field [0001] The invention relates to the field of power measurement and protection equipment for low-voltage power grids, in particular to an intelligent electric energy meter with power failure monitoring and protection functions. Background technique [0002] According to the definition of smart meters of the State Grid Corporation of China, smart electric energy meters are composed of measurement units, data processing units, communication units, etc., and have functions such as electric energy measurement, information storage and processing, real-time monitoring, automatic control, and information interaction. Therefore, the existing smart energy meters do not have power failure monitoring and protection functions. [0003] The technical equipment in the field of intelligent low-voltage switchgear has made great progress in recent years, and intelligent switchgear such as intelligent low-voltage integrated protector, intelligent leakage protector, and intelligent cir...
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IPC IPC(8): G01R11/25G01R35/04
Inventor 王金泽
Owner 王金泽