Intelligent circuit breaker with parameter acquisition and temperature protection functions
A technology of intelligent circuit breaker and protection function, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of short circuit between phases, difficulty in identifying the installation position of incoming and outgoing lines, and low precision, so as to improve the collection content, facilitate fault analysis, and Parameter-rich effects
Pending Publication Date: 2021-02-09
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology
[0004] Currently, smart circuit breakers on the market do not have the function of temperature protection. Most of the incoming and outgoing terminals are designed with a groove structure. Such a structural design makes it difficult for the naked eye to identify the installation position of the incoming and outgoing lines, which is likely to cause loose connections and increase contact resistance. The time is slightly longer. , it may explode sparks, and then cause a short circuit between phases; or the temperature rises, causing a fire, which has certain safety hazards
In addition, the line power parameters measured by the existing circuit breakers are relatively simple, basically all current data, and the accuracy is not high, so it can only be used as a simple protection data reference
Method used
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[0020] Below in conjunction with the examples, the present invention is further described, the following examples are illustrative, not limiting, and the protection scope of the present invention cannot be limited by the following examples.
[0021] An intelligent circuit breaker with parameter acquisition and temperature protection functions, including a metering chip, the signal output end of the metering chip is connected to a communication unit, the innovation of the present invention lies in that the signal input of the metering chip and a temperature measuring unit The temperature measuring units are respectively installed in the A, B, and C three-way of the three-phase electricity. The temperature measuring unit includes a temperature sensor and a resistor, and the temperature sensor is connected to the port P of the metering chip (such as P1, P2, P3, P4) are connected, and the resistors are connected in series between them. When the ambient temperature rises, the resist...
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The invention relates to the technical field of intelligent circuit breakers, in particular to an intelligent circuit breaker with parameter acquisition and temperature protection functions. Theintelligent circuit breaker comprises a metering chip, the signal output end of the metering chip is connected with a communication unit, and the intelligent circuit breaker is characterized in that the metering chip is connected with the signal input end of a temperature measurement unit; the temperature measurement units are installed in three paths A, B and C of three-phase electricity respectively;each temperature measurement unit comprises a temperature sensor and a resistor, wherein the temperature sensor is connected with a port P of the metering chip, a resistor is connected in series between the temperature sensor and the port P, and when the environment temperature rises, the resistance of the temperature sensor decreases, the corresponding sampling voltage Heat decreases, and then the AD sampling value decreases corresponding to each temperature value.
Description
technical field [0001] The technical field of the intelligent circuit breaker of the present invention is, in particular, an intelligent circuit breaker with the functions of parameter acquisition and temperature protection. Background technique [0002] In modern society, fields such as industry, agriculture, transportation, national defense, commerce, and people's lives are inseparable from electric energy. After electricity is generated, power distribution is an extremely important link in its transmission and use. The electrical appliances used in power distribution systems include Transformers and various high-voltage and low-voltage electrical equipment, and circuit breakers are electrical products that are widely used and widely used. Although the production technology of existing circuit breakers is becoming more and more sophisticated, there are still some deficiencies that need to be improved. [0003] The circuit breakers of the prior art have the following proble...
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IPC IPC(8): H02H7/26
CPCH02H7/262H02H7/263
Inventor 李博彤刘创华张锡喆赖依曼刘延炎毕海岩史钧杰刘伟张新民
Owner STATE GRID TIANJIN ELECTRIC POWER