Power line self-energy taking system

Abstract

The invention provides a power line self-energy taking system, which comprises an energy taking unit, a secondary processing chip and a front-end impact protection circuit, wherein the energy taking unit is used for sensing a change magnetic flux generated by the power line and generating sensing voltage; the secondary processing chip is used for inputting the sensing voltage of an energy taking coil and outputting a standard voltage and current value; and the front-end impact protection circuit is arranged between the energy taking unit and the secondary processing chip. The form of the energy taking coil is changed, a later-stage energy processing module is integrated inside a single chip, the size and the weight of the self-energy taking system are reduced, the energy taking coil is applicable in a large current condition, and the self-energy taking system is more applicable to a high-voltage power line overhead hanging condition.

Description

technical field [0001] The invention relates to a power line energy harvesting system, in particular to a unilateral power line self-energy harvesting system. Background technique [0002] The increasingly complex and complete power line online monitoring system reduces the workload of people to inspect and monitor lines, and greatly improves the safety of power lines. However, the characteristics of each power supply mode of the online detection system and the limitations of the environment in which the power line is located, for example, the self-capacity of the battery and the factors of cycle efficiency, solar power supply is limited by sunlight, and laser power supply is expensive and cannot be used in a wide range. Therefore, power line self-absorption has gradually become the main source of power for the power line online monitoring system. [0003] like figure 1 As shown, the traditional power line self-energy harvesting system consists of high-voltage power lines,...

AI Technical Summary

Problems solved by technology

[0005] The inventor, after long-term observation and research, found that this form of energy harvesting system has some disadvantages: the core-through energy harvesting coil has problems such as large volume, high mass, and inconvenient installation, so the application environment is limited, such as high-altitude suspension power line places , will greatly increase the stress of the power line and form a safety hazard

Since the turn-on voltage of the core-through energy harvesting coil is very low, and the current on the high-voltage power line is usually more than several hundred amperes, the system is easy to induce high voltage in this environment, which is contrary to some low-power applications. It has become a shortcoming, increasing the processing pressure of the energy processing module and affecting the stability of the system

In addition, although the secondary processing module can be integrated on the PCB board with chips, the energy transfer between modules and the working conditions of each functional module chip will increase energy consumption and reduce transmission efficiency, and the use of multiple chips increases the inter-chip signal routing, reducing the stability of the system

When using chips, it is necessary to consider the working conditions of each chip and the compatibility issues between chip modules, which will undoubtedly increase the complexity of the design

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