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Power transmission line break monitoring and alarming device

A technology for monitoring and alarming devices and power transmission lines, which is applied in the directions of measuring devices, measuring electricity, fault locations, etc., can solve problems such as economic losses, the inability of power transmission lines to continue to supply power, factory production and the impact on people's lives, and achieve the effect of reducing losses.

Active Publication Date: 2010-04-14
GUANGDONG CORRECTITUDE POWER CURRENCY ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Damaged power lines cannot continue to supply power, which will have a great impact on the production of factories and people's lives, and even cause huge economic losses
These transmission lines are laid in a wide range, long and complicated routes, and often cannot be found in time after damage, and of course they cannot be repaired in time

Method used

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  • Power transmission line break monitoring and alarming device
  • Power transmission line break monitoring and alarming device
  • Power transmission line break monitoring and alarming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, such as figure 2 As shown, according to the application of the transmission line disconnection monitoring and alarm device of the present invention in a one-way power supply system, the transmission line includes a live wire 1 and a neutral wire 2; the bias current circuit is connected to the live wire 1 and the Inductance 15 between ground 3; Current detection circuit 6 comprises: current transformer 9, amplifying circuit 10, rectification circuit 11, subtraction circuit 12, amplifying circuit 13 and comparison circuit 14; Current transformer 9 is positioned at the power end of transmission line, The iron core is placed outside the transmission line, the measurement output end of the current transformer 9 is connected with the input end of the amplifier circuit 10, the output end of the amplifier circuit 10 is connected with the input end of the rectification circuit 11, and the output end of the rectification circuit 11 is connected with the subtraction cir...

Embodiment 2

[0029] Example 2, such as Figure 4 As shown, according to the application of the transmission line disconnection monitoring and alarm device of the present invention in a one-way power supply system, the transmission line includes a live wire 1 and a neutral wire 2; the bias current circuit is connected to the live wire 1 and the Inductance 15 between ground; Current detection circuit comprises: be positioned at transmission line tail end, the current transformer 9 that iron core is sleeved outside inductance 15 branches; The input end of driving circuit 7 is connected with the measurement output end of current transformer 9, The output terminal of the driving circuit 7 is connected with the alarm 8, and when the measured output of the current transformer 9 is zero, the driving circuit 7 drives the alarm 8 to alarm.

[0030] When the transmission line supplies power normally, there is a voltage at both ends of the inductor 15 connected between the live line 1 and the ground 3...

Embodiment 3

[0034] Example 3, such as Figure 5As shown, according to the application of the transmission line disconnection monitoring and alarm device of the present invention in a one-way power supply system, the transmission line includes a live line 1 and a neutral line 2 . A power supply switch 26 is installed on the live wire 1 of the power supply end of the transmission line. The bias current circuit 5 includes: two impedances 15, 16 connected in parallel between the fire wire 1 and the ground 3 at the end of the transmission line; a relay 21 connected to the end of the transmission line, and a normally closed contact 23 of the relay 21 is connected to Between the impedance 16 and the live wire 1 or the ground 3, its normally open contact 24 is connected between the impedance 15 and the live wire 1 or the ground 3, and its coil 22 is connected between the live wire 1 and the neutral wire 2; terminal, the primary is connected between the live wire 1 and the neutral wire 2 before t...

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PUM

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Abstract

The invention discloses a power transmission circuit breaking monitoring and alarming device, which comprises the following parts: offset current circuit, current detecting circuit, driving circuit and alarm, wherein the offset current circuit is connected on the power transmission circuit to produce an offset current from rear of transmission circuit, which connects impedance between live wire and ground of transmission circuit rear; the current detecting circuit detects the offset current of offset current circuit; the driving circuit connects the output end of current detecting circuit, which drives alarm to alarm when the offset current is not detected by current detecting circuit. The invention can alarm automatically, which can find the circuit damage condition for restoring rapidlyand reduces loss.

Description

technical field [0001] The invention relates to a monitoring and alarming device for a transmission line disconnection. technical background [0002] As a kind of energy, electric energy plays a very important role. It is mainly transmitted to various power consumption areas through power transmission lines. However, these transmission lines are often damaged, such as: artificial cutting and construction damage. Damaged power lines cannot continue to supply power, which has a great impact on the production of factories and people's lives, and even causes huge economic losses. These transmission lines are laid in a wide range, long and complicated routes, and often cannot be found in time after damage, and of course they cannot be repaired in time. [0003] If the transmission line is damaged and can automatically alarm, then the damage of the line can be found in time, so that the line can be repaired quickly and the loss can be reduced. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02G01R31/08
Inventor 辛平野
Owner GUANGDONG CORRECTITUDE POWER CURRENCY ELECTRIC CO LTD