Current induction type power supply of power grid monitoring device

A power grid monitoring and current sensing technology, which is used in output power conversion devices, electrical components, regulating electrical variables, etc.

Active Publication Date: 2014-12-24
宁波智能装备研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the power supply of the existing power grid monitoring device using commercial power conversion, solar energy, storage battery, and optical fiber power supply, and to provide a current-sensing power supply for the power grid monitoring device

Method used

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  • Current induction type power supply of power grid monitoring device
  • Current induction type power supply of power grid monitoring device
  • Current induction type power supply of power grid monitoring device

Examples

Experimental program
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specific Embodiment approach 1

[0029] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the current induction power supply of the power grid monitoring device described in this embodiment, the current transformer 1 obtains the secondary current signal by sensing the current in the grid bus, and the secondary side of the current transformer 1 is connected to the rectifier circuit 2, rectifying The output end of the circuit 2 is connected in parallel with a plurality of load controllers 3, the output end of each load controller 3 is connected to the input end of the voltage stabilizing circuit 4, and the output end of the voltage stabilizing circuit 4 is connected to the input end of the step-down circuit 5, The output terminal of the step-down circuit 5 is connected to a load 6 .

specific Embodiment approach 2

[0030] Specific implementation mode two: the following combination image 3 Describe this embodiment, this embodiment will further explain Embodiment 1. The load controller 3 includes a piezoresistor L1, a resistor R1, a resistor R2, a sliding rheostat R3, a resistor R4, a resistor R5, a first triode Q1 and a second Transistor Q2, the first triode Q1 and the second triode Q2 are all NPN type withstand voltage triodes,

[0031] One end of the varistor L1, one end of the sliding rheostat R3, the collector of the first transistor Q1 and the collector of the second transistor Q2 are simultaneously connected to the positive output terminal IN+ of the rectifier circuit 2,

[0032] One end of the resistor R1, one end of the resistor R2, one end of the resistor R4 and one end of the resistor R5 are simultaneously connected to the negative output terminal IN- of the rectifier circuit 2,

[0033] The other end of the varistor L1 is connected to the other end of the resistor R1,

[003...

specific Embodiment approach 3

[0036] Specific implementation mode three: the following combination image 3 Describe this embodiment, this embodiment will further describe Embodiment 1, the voltage stabilizing circuit 4 includes resistors R6, resistors R7, resistors R8, resistors R9, resistors R10, resistors R13, resistors R14, resistors R15, resistors R16, resistors R17, The third transistor Q3, the fourth transistor Q4, the PMOS transistor Q5, the third transistor Q3 and the fourth transistor Q4 are all NPN transistors,

[0037] One end of the resistor R7, one end of the resistor R8, one end of the resistor R14, one end of the resistor R16, the source of the PMOS transistor Q5, and one end of the resistor R15 are simultaneously connected to the positive output terminal IN+ of the rectifier circuit 2,

[0038] One end of the resistor R6, the emitter of the third transistor Q3, one end of the resistor R10 and the emitter of the fourth transistor Q4 are simultaneously grounded to GND,

[0039] The other en...

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Abstract

The invention discloses a current induction type power supply of a power grid monitoring device, belongs to the field of power grids and solves the problem that the conventional power supply of the power grid monitoring device exists in modes of mains supply conversion, solar energy, storage battery and optical fiber power supply. The current induction type power supply of the power grid monitoring device comprises a current transformer, a rectification circuit, a voltage stabilizing circuit, a step-down circuit and n load controllers, wherein n is a natural number which is greater than or equal to 1; the current transformer acquires a secondary current signal by inducing current in a power grid bus; a secondary side of the current transformer is connected with the rectification circuit; an output end of the rectification circuit is connected in parallel with the load controllers; an output end of each load controller is connected with an input end of the voltage stabilizing circuit; an output end of the voltage stabilizing circuit is connected with an input end of the step-down circuit; and an output end of the step-down circuit is connected with a load. The device provided by the invention is used for providing power for the power grid monitoring device.

Description

technical field [0001] The invention relates to a current induction power supply of a power grid monitoring device and belongs to the field of power grids. Background technique [0002] The power supply of the power grid monitoring device mainly adopts several methods such as mains power conversion, solar energy, storage battery, and optical fiber power supply. These methods have their own shortcomings: the way of mains power conversion is only applicable When monitoring the power grid on high-voltage lines in the field, there is often no commercial power available in the surrounding environment, so other methods must be used, such as solar energy, storage batteries, optical fiber power supply, etc.; the monitoring range of the power grid is generally relatively large, and there are many monitoring equipment for the grid, such as the use of storage batteries In this way, a large number of replacement and charging is required, the workload is heavy, and the operation is incon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J17/00H02M3/156H02M3/04H02J5/00
Inventor 孙一勇魏树银余洋高会军吴志兵任雨
Owner 宁波智能装备研究院有限公司
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