An integrated voltage and current sensor built in a solid insulating pole
A solid insulated pole, voltage and current technology, applied in the direction of measuring current/voltage, instruments, measuring devices, etc., to achieve the effect of high-precision voltage and current measurement, high integration, and small size
Active Publication Date: 2019-08-09
SHANGHAI G&W ELECTRIC LTD
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Problems solved by technology
Voltage measurement accuracy is not greater than 3%
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Embodiment Construction
[0025] Below the utility model embodiment is described in further detail:
[0026] An integrated voltage and current sensor with a built-in solid insulating pole, including a capacitor circuit 1 that converts V1 of 3KV to 40.5KV into a V2 signal of 1V to 5V, and a conversion circuit 2 that transforms the electrical signal sent by the conversion circuit 2 Transformer circuit 3, controller 4, temperature sensing resistor 5 for sensing external temperature, protection circuit 6 for overvoltage or low voltage, and signal circuit 7 for communication. The conversion circuit 2 sequentially includes a power amplifier circuit 21, a processing module 22 and an output module 23, the input terminal of the capacitor circuit 1 is V1, the output terminal is V2, and the output terminals of the output module 23 are respectively connected with the transformer circuit 3 and the controller 4, and the processing The module 22 is connected with the controller 4 , and the temperature sensing resisto...
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The invention relates to a built-in integrated voltage and current sensor of a solid insulation pole. The built-in integrated voltage and current sensor comprises a capacitive circuit (1), a conversion circuit (2), a voltage transformation circuit (3), a controller (4) and a temperature-sensitive resistor (5). The conversion circuit (2) comprises a power amplification circuit (21), a processing module (22) and an output module (23) in sequence. The input end of the capacitive circuit (1) is V1, and the output end of the capacitive circuit (1) is V2. The output end of the output module (23) is connected with the voltage transformation circuit (3) and the controller (4). The processing module (22) is connected with the controller (4). The temperature-sensitive resistor (5) is connected with the controller (4). The built-in integrated voltage and current sensor further comprises an over-voltage or low-voltage protection circuit (6) or a communication signal circuit (7). The sensor is exquisite in structure, high in integrity and capable of measuring the voltage and current of an electric system at high precision in combination with temperature compensation, and the size of the sensor is 90% smaller than that of a common voltage transformer.
Description
technical field [0001] The invention relates to a medium-voltage power distribution switch, in particular to an integrated voltage and current sensor with a built-in solid insulating pole applied to an overhead line switch. Background technique [0002] With the application of distribution automation becoming more and more extensive in China, the market demand for automatic protection circuit breakers on poles is increasing. At the same time, due to the requirements of environmental protection, the market is more inclined to products made of environmentally friendly materials such as solid insulation. The integrated voltage and current sensor is directly cast in the pole of the solid insulated switch. It is a high-precision voltage monitoring device. At the same time, it integrates a current sensor, which can monitor current and voltage at the same time. It is easy to use and saves costs. Contents of the invention [0003] The object of the present invention is to provide...
Claims
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IPC IPC(8): G01R19/00
Inventor 田寅午俞波王红君孙亮
Owner SHANGHAI G&W ELECTRIC LTD