CN209028110U - A kind of power circuit singlephase earth fault lookup device signal source - Google Patents

A kind of power circuit singlephase earth fault lookup device signal source Download PDF

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Publication number
CN209028110U
CN209028110U CN201821316014.4U CN201821316014U CN209028110U CN 209028110 U CN209028110 U CN 209028110U CN 201821316014 U CN201821316014 U CN 201821316014U CN 209028110 U CN209028110 U CN 209028110U
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CN
China
Prior art keywords
alien frequencies
signal
power
connects
lithium battery
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Active
Application number
CN201821316014.4U
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Chinese (zh)
Inventor
陈媚
董加都
曹光平
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Zhejiang Branch Electronic Ltd By Share Ltd
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Zhejiang Branch Electronic Ltd By Share Ltd
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Priority to CN201821316014.4U priority Critical patent/CN209028110U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52Outage or fault management, e.g. fault detection or location

Abstract

The utility model relates to electric power system power distribution line faults to search detecting instrument field, more particularly, to electric distribution network overhead wire grounding fault device signal source, a kind of power circuit singlephase earth fault lookup device signal source is provided, it include: charging interface, lithium battery pack, power switch, alien frequencies signal converter, non-power-frequency current sensor, ammeter, alien frequencies step-up transformer, connect the earth terminal, high-voltage signal output end, signal indicator, charge indicator, cabinet, external power supply is not needed using lithium battery, it is easy to carry, for quick trouble-shooting point, debugging provides, it provides a kind of light, efficient portable signal source device.

Description

A kind of power circuit singlephase earth fault lookup device signal source
Technical field
The utility model relates to electric power system power distribution line faults to search detecting instrument field, more particularly, to Distribution Network Frame Ceases to be busy road grounding fault device signal source.
Background technique
Power overhead network is the most common power transmission mode of electric system, and route includes electric pole, transmission pressure, insulation The power transmission and transforming equipments material such as son, arrester, transformer, disconnecting switch, PT, CT, overhead transmission line is in long-term live line work process In, the equipment such as insulator, arrester, disconnecting switch may be subjected to lightning stroke, corrosion, cause decreasing insulating and breakdown, lead It causes the single-phase insulation of transmission line of electricity low, is unable to satisfy the needs of transmission of electricity, produces ground fault phenomenon, electric system is known as low current Ground fault is also referred to as singlephase earth fault, and upon the occurrence of a ground fault, substation's output end will appear residual voltage raising, zero sequence The phenomenon of the failure that electric current becomes larger, after line failure, it is necessary to which line management personnel go on-the-spot make an inspection tour to search, power industry phase Closing all is to need to look for power circuit ground fault in the case where stopping state to look into when regulatory requirements search singlephase earth fault, guarantees peace Entirely, in recent years, occur a kind of singlephase earth fault lookup instrument in the market, Single-phase Ground Connection Failure occurs for quickly positioning Instrument is connect on faulty line using fixed or mobile signal using the current signal for having added certain power on dead line Device is received, for determining that earth fault, the current signal of this certain power, some are risen using generator or inverter Pressure, some usually occur that voltage is not high enough, and instruments weight is overweight or wants two kinds to set using modes such as high direct voltage signal injections It is standby to be applied in combination, it is not readily portable the problems such as, the utility model is intended to provide a kind of light, efficient portable purpose, Using 24 power supply of lithium battery, external power supply is not needed, whole device weight is less than 10Kg, and it is easy to carry, it is quick trouble-shooting Point, debugging provide.
Summary of the invention
The problems such as the technical issues of solving needed for the utility model is insufficient, not readily portable in view of the above technology, provides A kind of power overhead network single-line ground trouble shoot device signal source that is light, being not required to external power supply, have it is portable, conveniently, Simply, easily, it is accurate, quickly judge earth fault.
To solve the above-mentioned problems, realize line-to-ground fault it is accurate, easily and fast search, the skill of the utility model Art scheme is: providing a kind of power circuit singlephase earth fault lookup device signal source, it is characterised in that include: (1) charging Interface, (2) lithium battery pack, (3) power switch, (4) alien frequencies signal converter, (5) non-power-frequency current sensor, (6) ammeter, (7) alien frequencies step-up transformer, (8) connect the earth terminal, (9) high-voltage signal output end, (10) signal indicator, and (11) charging refers to Show device, (12) cabinet, charging interface connects with lithium battery pack charging input end, and lithium battery pack becomes through power switch and alien frequencies signal Parallel operation input terminal connects, and the output end of alien frequencies signal converter is through non-power-frequency current sensor and alien frequencies step-up transformer primary phase It connects, alien frequencies signal transducer output end connects with ammeter, and alien frequencies step-up transformer secondary one end connects with the earth terminal is connect, separately One end connects with high-voltage signal output end, and signal indicator connects with alien frequencies step-up transformer secondary, charge indicator and charging Interface connects, and lithium battery pack, alien frequencies signal converter, non-power-frequency current sensor, alien frequencies step-up transformer are placed in cabinet, fills Electrical interface, ground terminal, high-voltage output end, power switch, signal lamp, charging indicator light are placed on cabinet panel.
The utility model proposes a kind of power circuit singlephase earth fault search device have compared with prior art with Lower advantage: structure is simple, and instruction is clear, easy to operate;Complete machine is light and handy, small volume, and built-in lithium electricity does not have to external power supply, makes With conveniently;Using non-mains-supplied mode, reducing distribution capacity using alien frequencies signal influences measurement, more preferably judges ground fault Point.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of power circuit singlephase earth fault search device functional block diagram.
Specific embodiment
The technical solution of the utility model is: a kind of power circuit singlephase earth fault lookup device signal source is provided, Be characterized in that include: (1) charging interface, (2) lithium battery pack, (3) power switch, (4) alien frequencies signal converter, (5) alien frequencies Current sensor, (6) ammeter, (7) alien frequencies step-up transformer, (8) connect the earth terminal, (9) high-voltage signal output end, (10) Signal indicator, (11) charge indicator, (12) cabinet;Charging interface connects with lithium battery pack charging input end, lithium battery pack Connect through power switch with alien frequencies signal converter input terminal, the output end of alien frequencies signal converter through non-power-frequency current sensor with Alien frequencies step-up transformer primary connects;Alien frequencies signal transducer output end connects with ammeter, alien frequencies step-up transformer secondary one It holds and connects the earth terminal and connect, the other end connects with high-voltage signal output end;Signal indicator and alien frequencies step-up transformer are secondary Connect, charge indicator connects with charging interface, lithium battery pack, alien frequencies signal converter, non-power-frequency current sensor, alien frequencies boosting Transformer is placed in cabinet, charging interface, ground terminal, high-voltage output end, power switch, signal lamp, charging indicator light It is placed on cabinet panel.
Lithium battery group uses 20AH, 24V battery pack, and alien frequencies signal converter exports 300V, 50mA using input 24V, The inverter of 22HZ is a constant current signal source, and charging interface is the 24V charging interface an of standard, as to lithium battery Group charging uses, and step-up transformer is the transformer of non-50HZ, using low-frequency iron core coiling, inputs 300V, exports 3000V, 22HZ, which is generated, is up to 3000V signal source, and power switch controls lithium battery group output services, and lithium battery does not export processing and opens when closing Line state, alien frequencies signal could export when connection, and entire signal source could work, and cabinet uses the cabinet of PVC material, and width is 6U, high-voltage signal, the output end being arranged on panel are the high pressure alien frequencies signal for exporting step-up transformer, feed-in ground fault Route on, connect the earth terminal by conducting wire with greatly be attached, enable power circuit singlephase earth fault by this high pressure Signal just tests out earth fault by current clamp by earth fault flow direction the earth, using portable signal collector.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (1)

1. a kind of power circuit singlephase earth fault searches device signal source, it is characterised in that include: (1) charging interface, (2) Lithium battery pack, (3) power switch, (4) alien frequencies signal converter, (5) non-power-frequency current sensor, (6) ammeter, (7) alien frequencies liter Pressure transformer, (8) connect the earth terminal, (9) high-voltage signal output end, (10) signal indicator, (11) charge indicator, (12) machine Case;Charging interface connects with lithium battery pack charging input end, and lithium battery pack is through power switch and alien frequencies signal converter input terminal Connect, the output end of alien frequencies signal converter connects through non-power-frequency current sensor with alien frequencies step-up transformer primary, alien frequencies signal Sensor output connects with ammeter, and alien frequencies step-up transformer secondary one end connects with the earth terminal is connect, the other end and high pressure Signal output end connects, and signal indicator connects with alien frequencies step-up transformer secondary, and charge indicator connects with charging interface, lithium Battery pack, alien frequencies signal converter, non-power-frequency current sensor, alien frequencies step-up transformer are placed in cabinet, charging interface, ground connection End, high-voltage output end, power switch, signal lamp, charging indicator light are placed on cabinet panel.
CN201821316014.4U 2018-08-15 2018-08-15 A kind of power circuit singlephase earth fault lookup device signal source Active CN209028110U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821316014.4U CN209028110U (en) 2018-08-15 2018-08-15 A kind of power circuit singlephase earth fault lookup device signal source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821316014.4U CN209028110U (en) 2018-08-15 2018-08-15 A kind of power circuit singlephase earth fault lookup device signal source

Publications (1)

Publication Number Publication Date
CN209028110U true CN209028110U (en) 2019-06-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821316014.4U Active CN209028110U (en) 2018-08-15 2018-08-15 A kind of power circuit singlephase earth fault lookup device signal source

Country Status (1)

Country Link
CN (1) CN209028110U (en)

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