Self-energy-taking flexible current measuring device

Abstract

The invention relates to a self-energy-taking flexible current measuring device, and the device comprises a measuring module which comprises an alternating current sensor and can measure the alternating current in a to-be-measured conductor; the power supply module comprises an induction circuit, and the power supply module can generate induction current by inducing an alternating magnetic field in the to-be-detected conductor; the processing module comprises a first connecting end and a second connecting end which are arranged back to back, and a third connecting end and a fourth connecting end which are arranged back to back, and two opposite ends of the measuring module are respectively connected with the first connecting end and the second connecting end to form a first annular channel through which a conductor to be measured can pass; the two opposite ends of the power supply module are connected with the third connecting end and the fourth connecting end respectively to form a second annular channel for the to-be-measured conductor to pass through, the power supply module can supply power to the processing module, and the processing module can measure the induced current generated on the measuring module after obtaining the current of the power supply module. The device has the advantages of being simple in structure, wide in frequency and capable of achieving self energy supply.

Description

technical field [0001] The invention relates to the technical field of electric power measurement, in particular to a self-energy flexible current measurement device. Background technique [0002] Current measurement plays an extremely important role in the power industry, providing power systems with the information necessary for metering, control and relay protection. At present, the current measurement of the power system still mainly relies on the traditional electromagnetic current transformer. The disadvantage of this kind of sensor is that it is bulky and expensive. It must prevent the saturation of the iron core. It can only measure AC signals, and the frequency is very low, so it cannot measure high frequency. current, and an external power supply is also required. With the continuous development of the power grid in the direction of intelligence and digitization, the demand for research and development of miniaturized, easy-to-install and low-cost current sensors ...

AI Technical Summary

Problems solved by technology

At present, the current measurement of the power system still mainly relies on the traditional electromagnetic current transformer. The disadvantage of this kind of sensor is that it is bulky and expensive. It must prevent the iron core from being saturated. It can only measure AC signals, and the frequency is very low, so it cannot measure high frequency. current, and an external power supply is also required

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