CN103675567B - Short circuit detection method and short circuit detection circuit for 380V power transformation busbar - Google Patents
Short circuit detection method and short circuit detection circuit for 380V power transformation busbar Download PDFInfo
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- CN103675567B CN103675567B CN201210322375.0A CN201210322375A CN103675567B CN 103675567 B CN103675567 B CN 103675567B CN 201210322375 A CN201210322375 A CN 201210322375A CN 103675567 B CN103675567 B CN 103675567B
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Abstract
The invention provides a short circuit detection circuit for a 380V power transformation busbar. The 380V power transformation busbar includes a grounding busbar and three phase voltage power transformation busbars, wherein the three phase voltage power transformation busbars are all connected with a three-phase power cord of a 380V power supply through connecting wires respectively, a testing bulb is arranged on each connecting wire, and the grounding busbar is grounded. When the testing circuit is used for detecting whether a short circuit occurs to the 380V power transformation busbar, a user can judge whether a short circuit occurs to the corresponding power transformation busbar only by observing whether each testing bulb is lightened and how bright the lightened bulb is. The method is simple and practical, and can help the user very quickly judge whether a short circuit occurs to the power transformation busbar during equipment maintenance, so that the equipment failure judgment is quickened, the equipment maintenance time is saved, equipment can be restored within the shortest possible time, the work efficiency is improved, and the labor intensity of the maintenance personnel can also be effectively reduced.
Description
Technical field
The present invention relates to a kind of line short detection method, more particularly to one kind are used for detecting the short circuit of 380v power transformation busbar
Method, and the testing circuit realizing this detection method.
Background technology
Three-phase alternating current route the circuit that three-phase alternating-current supply is powered, abbreviation three-phase circuit.Three-phase alternating-current supply refers to energy
Enough provide three frequency is identical and the power supply of voltage that phase place is different or electric current, be most commonly used that threephase alternator.Three-phase
120 ° of the phase place mutual deviation of each phase voltage of alternating current generator, between them, the advanced or delayed order of each phase voltage is referred to as phase sequence,
It is arranged on the stator of electromotor by certain angle (typically 120 degree) by three groups of coils, allow rotor high-speed rotation issue friendship
Stream is electric, generally their another poles corresponding, and totally three poles are combined, as other three lines of single line (being called zero line),
It is called phase line.Such circuit is generally termed three-phase and four-line.I.e. three phase lines, a zero line.The electricity that power plant sends will raise
Voltage, has arrived user and has wanted transformator to carry out blood pressure lowering, and to the voltage of user, voltage between phase and phase is 380v, this three-phase four
Line (zero line sometimes, voltage-to-ground is zero to save) is exactly three-phase alternating current, typically passes through power transformation busbar and lead to transformator at user
Cross cable to connect.
In order to ensure Electrical Safety, the power line of some high-power machinery equipment is often directly connected on 380v power transformation busbar
On, electric current is transferred directly to plant equipment by power transformation busbar.And (as more moist ring under some special environments
Border), plant equipment load end is easy to short circuit, and the electric elements occurring often making during short circuit burn, and impact machinery sets
Standby normal use.Short circuit problem and mainly has two kinds of situations: 1) the electronics device within plant equipment in plant equipment load end
Part occurs in that short circuit；2) short circuit occurs between power transformation busbar.
Go wrong carry out overhaul of the equipments when, for plant equipment internal electronic device occur short circuit in the case of often relatively
Detect for easy, the general position that only need to can detect that short circuit by conventional circuit tester.And use for power transformation busbar
Whether circuit tester detection is then more difficult, because the insulating requirements between power transformation busbar are very high, short-circuit between power transformation busbar
Megger (megameter) typically to be adopted is detected, although this detection method is accurately, complex steps, and carry out every time detecting all
Need longer time.And in physical device maintenance process, some plant equipment tend not to shut down for a long time, because
The time of this overhaul of the equipments is more short better, requires if now still carrying out detection using megger and tending not to meet, and at present still
There is no a kind of extraordinary method, can be used for quickly judging between power transformation busbar whether short circuit.
Content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of short circuit inspection of 380v power transformation busbar
Survey method, for solve the problems, such as in prior art can not whether short circuit be used for quickly detecting between power transformation busbar.
For achieving the above object and other related purposes, the present invention provides a kind of 380v power transformation busbar method for detecting short circuit,
Described 380v power transformation busbar includes a ground connection busbar and three phase voltage power transformation busbars it is characterised in that this detection method bag
Include following steps: 1) power transformation busbar is disconnected with external power source；2) an interim 380v power supply is set, three phase voltages are become the goddess of lightning
Row is connected with the three-phase power line of interim 380v power supply by connecting wire respectively, and setting test bulb in connecting wire,
Bus-bar earthing will be grounded, as bright in test lamp steep raising, then prove three phase voltage power transformation busbars between or phase voltage power transformation busbar with
Short circuit between ground connection busbar.
Preferably, in test process, as bright in only one of which test lamp steep raising and brightness is brighter, then prove and this test lamp
The phase voltage power transformation busbar of bubble series connection and ground connection busbar short circuit；If any two bulb is simultaneously shinny but brightness is dark, then prove with
Short circuit between the phase voltage power transformation busbar of two test bulb series connection；As simultaneously shinny in three test bulbs, then prove three phases
All short circuits between voltage power transformation busbar.
Preferably, in the case that three test bulbs are simultaneously shinny, such as test bulb brightness is brighter, then prove three phases
At least one and ground connection busbar short circuit in voltage power transformation busbar；As simultaneously shinny in three test bulbs but when brightness is dark, then
Prove that three phase voltage power transformation busbars are not all short-circuit with ground connection busbar.
The invention also discloses a kind of testing circuit for realizing above-mentioned detection method, in this circuit, 380v becomes the goddess of lightning
Row includes a ground connection busbar and three phase voltage power transformation busbars, and described three phase voltage power transformation busbars pass through connecting wire respectively
It is connected with the three-phase power line of a 380v power supply, described connecting wire is provided with test bulb, described ground connection bus-bar earthing.
Preferably, the three-phase power line of described 380v power supply is provided with air switch.
Preferably, described test bulb is electric filament lamp.
As described above, following beneficial effect is had using the 380v power transformation busbar method for detecting short circuit and testing circuit of the present invention
Really: using the method to 380v power transformation busbar short circuit detects when, whether only need to observe each test bulb shinny, with
And shinny brightness can determine whether whether corresponding power transformation busbar is short-circuit, and the method is simple and practical, can be non-during maintenance of equipment
Often quickly judge whether power transformation busbar is short-circuit, thus accelerating equipment fault to judge speed, saving the maintenance of equipment time, making equipment
Can resume work within the time as short as possible, improve work efficiency, but also the work that can effectively reduce maintainer is strong
Degree.
Brief description
Fig. 1 is shown as the schematic diagram of 380v power transformation busbar short-circuit detecting circuit of the present invention.
Component label instructions
Specific embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also be by addition different concrete realities
The mode of applying is carried out or applies, and the every details in this specification can also be based on different viewpoints and application, without departing from
Carry out various modifications and changes under the spirit of the present invention.
It should be noted that the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way,
So only showing the assembly relevant with the present invention in schema rather than painting according to component count during actual enforcement, shape and size
System, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout kenel also may be used
Can be increasingly complex.
As shown in figure 1, the present invention provides a kind of 380v power transformation busbar short-circuit detecting circuit, 380v power transformation busbar includes three
Phase voltage power transformation busbar 1 and a ground connection busbar 2, phase voltage power transformation busbar 1, the electricity all with outside 380v power supply for the ground connection busbar 2
Source line disconnects.One interim 380v power supply is set, by connecting wire by three phase voltage power transformation busbars respectively with interim 380v
The three-phase power line of power supply connects, and setting one test bulb l, the test lamp in every connecting wire in every connecting wire
Bubble l is connected with phase voltage power transformation busbar 1, and so that ground connection busbar 2 is grounded.
When being detected using this testing circuit, such as only one of which test bulb l is shinny and brightness is brighter, then prove and be somebody's turn to do
The phase voltage power transformation busbar 1 of test bulb series connection and ground connection busbar 2 short circuit；If any two bulb l is simultaneously shinny but brightness is dark,
Then prove short circuit between the phase voltage power transformation busbar connected with two test bulb l；As simultaneously shinny in three test bulbs, then demonstrate,prove
All short circuits between bright three phase voltage power transformation busbars.In the case that three test bulbs are simultaneously shinny, such as test bulb l is bright
Degree is brighter, then prove at least one and ground connection busbar short circuit in three phase voltage power transformation busbars；As three test bulbs simultaneously
Shinny but when brightness is dark, then prove three phase voltage power transformation busbars 1 all with ground connection busbar 2 short circuit.Above-mentioned test bulb is bright
The judgement of degree can rule of thumb be passed through naked eyes and directly distinguish, and for the ease of differentiating, test bulb l adopts electric filament lamp.
For the ease of the control of circuit, the three-phase power line of interim 380v power supply is provided with air switch k, air switch
K can carry out break-make control to each circuitry phase respectively, so in the case that three test bulbs are simultaneously shinny, can pass through only open-minded
Three-phase circuit Zhong mono- tunnel and turn off the method for other two-way, quickly judge which phase voltage power transformation busbar with ground connection busbar
Short circuit.
Using the method and testing circuit to 380v power transformation busbar short circuit detects when, only need to observe each test
Whether bulb is shinny, and shinny brightness can determine whether whether corresponding power transformation busbar is short-circuit, and the method is simple and practical, can set
Quickly judging very much whether power transformation busbar is short-circuit in standby maintenance process, thus accelerating equipment fault to judge speed, saving equipment
Maintenance time, so that equipment can be resumed work within the time as short as possible, improve work efficiency, but also can effectively reduce dimension
Repair the labor intensity of personnel.380v power transformation busbar method for detecting short circuit therefore of the present invention and testing circuit can effectively overcome existing skill
Various shortcoming in art and have high industrial utilization.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
All equivalent modifications becoming or change, must be covered by the claim of the present invention.
Claims (6)
1. a kind of 380v power transformation busbar method for detecting short circuit, described 380v power transformation busbar include one ground connection busbar and three mutually electricity
Pressure power transformation busbar is it is characterised in that this detection method comprises the steps:
1) power transformation busbar is disconnected with external power source；
2) an interim 380v power supply is set, and described interim 380v power supply is three-phase alternating-current supply；By three phase voltage power transformation busbars
It is connected with the three-phase power line of interim 380v power supply by connecting wire respectively, and setting test bulb in connecting wire, often
Test bulb in root connecting wire is connected with phase voltage power transformation busbar；Bus-bar earthing will be grounded, as bright in test lamp steep raising, then demonstrate,prove
Between bright three phase voltage power transformation busbars or short-circuit between phase voltage power transformation busbar and ground connection busbar.
2. 380v power transformation busbar method for detecting short circuit according to claim 1 it is characterised in that: in test process, such as
Only one of which test lamp steep raising is bright and brightness is brighter, then prove that the phase voltage power transformation busbar connected with this test bulb is female with ground connection
Row's short circuit；If any two bulb is simultaneously shinny but brightness is dark, then prove with two test bulbs connect phase voltage change the goddess of lightning
Short circuit between row；As simultaneously shinny in three test bulbs, then prove all short circuits between three phase voltage power transformation busbars.
3. 380v power transformation busbar method for detecting short circuit according to claim 2 it is characterised in that: three test bulbs with
In the case of Shi Faliang, such as test bulb brightness is brighter, then prove at least one and ground connection in three phase voltage power transformation busbars
Busbar short circuit；As simultaneously shinny in three test bulbs but when brightness is dark, then prove three phase voltage power transformation busbars all not with connect
Ground busbar short circuit.
4. a kind of 380v power transformation busbar short-circuit detecting circuit, described 380v power transformation busbar include one ground connection busbar and three mutually electricity
Pressure power transformation busbar it is characterised in that: described three phase voltage power transformation busbars pass through connecting wire and an interim 380v power supply respectively
Three-phase power line connect, described interim 380v power supply be three-phase alternating-current supply；Described connecting wire is provided with test bulb, often
Test bulb in root connecting wire is connected with phase voltage power transformation busbar；Described ground connection bus-bar earthing；Each phase voltage power transformation busbar
Short circuit or insulation and ground connection busbar between, short circuit or insulation between each phase voltage power transformation busbar.
5. 380v power transformation busbar short-circuit detecting circuit according to claim 4 it is characterised in that: described interim 380v power supply
Three-phase power line be provided with air switch.
6. 380v power transformation busbar short-circuit detecting circuit according to claim 4 it is characterised in that: described test bulb be white
Vehement lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322375.0A CN103675567B (en) | 2012-09-04 | 2012-09-04 | Short circuit detection method and short circuit detection circuit for 380V power transformation busbar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210322375.0A CN103675567B (en) | 2012-09-04 | 2012-09-04 | Short circuit detection method and short circuit detection circuit for 380V power transformation busbar |
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| CN103675567B true CN103675567B (en) | 2017-02-01 |
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| CN103926450B (en) * | 2014-04-25 | 2017-01-04 | 华为技术有限公司 | Busbar voltage detection method and circuit |
| CN106644199B (en) * | 2016-12-15 | 2018-12-25 | 河海大学 | A kind of electric power experimental measurement method based on real-time signal monitoring system |
| CN109856518A (en) * | 2019-01-28 | 2019-06-07 | 安徽晋煤中能化工股份有限公司 | A kind of synthetic tower electric furnace insulation detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4074187A (en) * | 1976-11-30 | 1978-02-14 | Miller David H | Cable tester for multi-pair shielded cables |
| CN2831148Y (en) * | 2005-08-04 | 2006-10-25 | 鸿富锦精密工业（深圳）有限公司 | Wire tester |
| CN201583616U (en) * | 2009-12-01 | 2010-09-15 | 江苏精达里亚阿尔岗琴工程线有限公司 | Composite conductor short circuit tester |
| CN102323510B (en) * | 2011-05-25 | 2015-03-04 | 中国兵器工业集团第七○研究所 | Rapid and reliable flat cable assembly detection device |
| CN202854265U (en) * | 2012-09-04 | 2013-04-03 | 贵州中烟工业有限责任公司 | 380V power transformation busbar short circuit detection circuit |
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