CN110288888A - A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces - Google Patents
A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces Download PDFInfo
- Publication number
- CN110288888A CN110288888A CN201910696592.8A CN201910696592A CN110288888A CN 110288888 A CN110288888 A CN 110288888A CN 201910696592 A CN201910696592 A CN 201910696592A CN 110288888 A CN110288888 A CN 110288888A
- Authority
- CN
- China
- Prior art keywords
- core
- case
- transposition
- coaxial cable
- back side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000007634 remodeling Methods 0.000 title claims description 9
- 230000017105 transposition Effects 0.000 claims abstract description 168
- 230000009466 transformation Effects 0.000 claims abstract description 36
- 238000004088 simulation Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 238000000844 transformation Methods 0.000 claims 1
- 238000012549 training Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 239000004020 conductor Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of cable sheath grounding circulation simulators, include: threephase cable system, three phase mains, three sets of three-phase isolation transformers and two sets of transformation versions transposition casees；Allow transformer access in parallel by being transformed to transposition case, and then simulates true cable sheath grounding circulation phenomenon.It includes interior core electrode, outer core electrode, ground connection coaxial cable, coaxial cable jumper, three core sockets that version transposition case, which is transformed,.The present invention can highly restore the grounding circulation phenomenon for operating normally cable, be conducive to improve training and teaching effect, and apparatus of the present invention are at low cost, be suitable for that training and teaching uses.
Description
Technical field
The present invention relates to a kind of cable sheath grounding circulation simulator and the remodeling methods for the case that replaces.
Background technique
Cable sheath induced voltage, the electromagnetic induction being generated between cable conductor and sheath, essentially corresponds to one
The extremely low transformer of a efficiency.Cable sheath induced voltage and its caused grounding circulation are up the necessarily existing of cable
As.It is traditional, for training base grounding circulation analogy method using sheath to the electromagnetic induction of conductor current as scheme: directly
Current capacity is applied to original three-phase 110kV test cable system, sheath is made to generate true induced voltage and induced current.Its
Electric current applying method are as follows: Y type low voltage heavy current transformer is applied to the side of 110kV cable termination, centre-point earth, side
Three terminals accordingly input three-phase high current, and three terminals of the other side are shorted, and constitute closed circuit.Electric current and phase in cable
Position is as when logical high-voltage electricity, and transformer Y type output, three cables are also to constitute Y type load circuit, as shown in Figure 1a.
Above scheme is the transformer extremely low using original efficiency, promotes output work in a manner of improving input power
Rate, it needs a whole set of three-phase cranking test system to simulate true cable load, costly, land occupation is larger.One
As cable tutoring system, total length be no more than 100 meters, far below actual track piece cable length (generally 300 meters with
On), it is therefore desirable to current generating apparatus is applied to the electric current of multiple on cable conductor, can just induce connecing in actual track
Ground circulation is horizontal.
The purpose of this scheme is only the training and teaching under grounding circulation, however it spends cost than general electric current
Experimental rig is high, exists simultaneously and applies the problem of electric current is beyond current-carrying capacity of cable conductor, therefore the program is not suitable for using.
Summary of the invention
The present invention provides the remodeling method of a kind of cable sheath grounding circulation simulator and the case that replaces, by simulating to original
Transposition case in device is transformed, and enables high-efficiency potential transformer access in parallel, and then can simulate true cable sheath
Grounding circulation phenomenon is suitable for training and teaching.
Transformation version provided by the invention replaces case as sided configuration, includes front transposition case and back side transposition case；
Positive transposition case is equipped with three groups of corresponding interior core electrodes and outer core electrode, and back side transposition case is corresponding interior equipped with six groups
Core electrode and outer core electrode.
Three piece-root graftings ground coaxial cable, respectively contains inner core end and outer core end；Three piece-root grafting coaxial cable draw from outside
Enter in back side transposition case, the outer core end of these ground connection coaxial cables is made accordingly to connect the wherein three outer core electricity for the case that overleaf replaces
On extremely, the inner core end of these ground connection coaxial cables is accordingly connected on the wherein three interior core electrodes for the case that overleaf replaces, and connection is same
One piece-root grafting coaxial cable outer core electrode and interior core electrode belong to same group.
Three coaxial cable jumpers bridge front transposition case and back side transposition case, respectively contain and introduce back side transposition case
First segment and the second segment for introducing front transposition case；The outer core end of the respective first segment of these coaxial cable jumpers, is accordingly connected to
The back side replace case three outer core electrodes of residue on, the inner core end of the respective first segment of these coaxial cable jumpers is accordingly connected to
On three interior core electrodes of residue of back side transposition case；The back side replace case in connect same root coaxial cable jumper outer core electrode and
Interior core electrode belongs to same group；The outer core end of the respective second segment of these coaxial cable jumpers is accordingly connected to front transposition case
On three outer core electrodes, the inner core end of the respective second segment of these coaxial cable jumpers is accordingly connected to three of front transposition case
On interior core electrode.
Overleaf there are four three core sockets: three of three core socket of No.1 and dead earth coaxial cable for installation in transposition case
The connection of outer core electrode, No. two three core sockets are connect with three outer core electrodes of fixed coaxial cable jumper, No. three three core sockets and
The interior core electrode connection of three of dead earth coaxial cable, three inner core electricity of No. four three core sockets and fixed coaxial cable jumper
Pole connection.
Preferably, transposition arranges in front transposition case, the three-phase of core electrode and outer core electrode corresponding power in three groups, first
The interior core electrode of phase and the outer core electrode of the second phase, the outer core electrode of the interior core electrode of the second phase and third phase, third phase it is interior
Core electrode is connected with the outer core electrode of the first phase by corresponding electrical interconnecting means, and cross interconnected structure is formed.
Preferably, the bottom of box of front transposition case includes core electrode and outside in three groups of three through-holes and front transposition case
Core electrode is corresponding；The replace bottom of box of case of the back side includes core electrode and outer core in six groups of six through-holes and back side transposition case
Electrode is corresponding；Three piece-root graftings coaxial cable from outside through the back side transposition case wherein three through-holes with introduce the back side transposition case
In, the first segment of three coaxial cable jumpers is introduced into back side transposition case across three through-holes of residue of back side transposition case, and three
The second segment of root coaxial cable jumper passes through three through-holes of front transposition case to be introduced into front transposition case.
Preferably, in each coaxial cable jumper, the position between front transposition case and back side transposition case enters ground corner.
A kind of cable sheath grounding circulation simulator includes: threephase cable system, three sets of transformers change described in two sets
Make version transposition case；Threephase cable system further includes more locking terminals and multistage threephase cable, and every section of cable sheath passes through transformation
Version transposition case carries out cross interconnected；Transformation version transposition case also when selection accesses transformer, makes secondary side and the three-phase electricity of transformer
The sheath of cable system is connected；One of transformation version transposition case accesses two sets in three sets of transformers, another transformation version transposition
The remaining a set of transformer of case access.
Preferably, in the case where dummycable sheath grounding circulation, the back side transposition case of each transformation version transposition case
Three core sockets access transformer, include: outside analogue ground coaxial cable when the mutual voltage of core, electric current, three core socket of No.1
And/or No. two three core sockets connect transformer；Alternatively, in mutual voltage, the electric current of analogue ground coaxial cable inner core, No. three
Three core sockets and/or No. four three core sockets connect transformer.
Preferably, in the case where simulating true cable load, No.1 in the back side transposition case of each transformation version transposition case
Three core sockets and No. two three core sockets are shorted, and No. three three core sockets and No. four three core sockets are shorted.
Transformation version transposition case remodeling method of the present invention, specifically includes following procedure:
It is to three piece-root graftings same comprising three groups of corresponding interior core electrodes and outer core electrode in the former cross interconnected transposition case of step 1
The respective inner core end of shaft cable and outer core end accordingly connect；Take out the ground connection coaxial cable in former cross interconnected transposition case；
Step 2 is the front transposition case that version transposition case is transformed with former cross interconnected transposition case, increases a back at its back side
Replace case in face, and replace case six groups of corresponding interior core electrodes of setting and outer core electrode at the back side；
By three piece-root grafting coaxial cable is introduced into the back side transposition case step 3, makes the outer core of these ground connection coaxial cables
Overleaf on wherein three outer core electrodes of transposition case, inner core ends of these ground connection coaxial cables are accordingly connected to the corresponding connection in end
On wherein three interior core electrodes of back side transposition case, the outer core electrode and interior core electrode of connection same root ground connection coaxial cable belong to
Same group；
Step 4 takes three coaxial cable jumpers, bridges front transposition case and back side transposition case；These coaxial cable jumpers are each
The self-contained first segment for introducing back side transposition case and the second segment for introducing front transposition case；These coaxial cable jumpers respectively first
The outer core end of section, corresponding connection overleaf replace case three outer core electrodes of residue on, these coaxial cable jumpers respectively first
The inner core end of section, corresponding connection is overleaf on three interior core electrodes of residue of transposition case；The back side replace case in connection same root across
The outer core electrode and interior core electrode for connecing coaxial cable belong to same group；The outer core end of the respective second segment of these coaxial cable jumpers,
It is accordingly connected on three outer core electrodes of front transposition case, the inner core end of the respective second segment of these coaxial cable jumpers, accordingly
It is connected on three interior core electrodes of front transposition case；
Step 5 back side is replaced in case, and three core socket of No.1 is connect with three outer core electrodes of dead earth coaxial cable,
No. two three core sockets are connect with three outer core electrodes of fixed coaxial cable jumper；
Step 6 back side is replaced in case, and No. three three core sockets are connect with three interior core electrodes of dead earth coaxial cable,
No. four three core sockets are connect with three interior core electrodes of fixed coaxial cable jumper.
Preferably, the incoming end of three core socket of No.1 and No. two three core sockets as transformer, it is coaxial for analogue ground
Mutual voltage, the electric current of the outer core of cable；The incoming end of No. three three core sockets and No. four three core sockets as transformer, for simulating
It is grounded mutual voltage, the electric current of coaxial cable inner core.
Preferably, transformer is accessed in three core sockets of installation, realizes the simulation of cable sheath grounding circulation；Use shorting stub
Three core socket of No.1 and No. two three core sockets, No. three three core sockets and No. four three core sockets are shorted with plug, are realized true
Real cable load condition simulation.
Compared with prior art, cable sheath ground connection is realized in apparatus of the present invention quickly accessing and removing by transformer
Circulation simulation and true cable load simulation, be suitable for training and teaching in repeat, comparative simulation, and have it is easy to operate, device at
This low advantage.
Detailed description of the invention
Fig. 1 a is that Y type current transformer energisation mode generates faradic schematic illustration；
Fig. 1 b is the schematic illustration of cable sheath grounding circulation simulator；
Fig. 2 is cable sheath grounding circulation simulator electrical connection diagram of the present invention；
Fig. 3 is the initial state front schematic view of former cross interconnected transposition case；
Fig. 4 is the initial state schematic rear view of former cross interconnected transposition case；
Fig. 5 is the cross interconnected transposition case front schematic view of original for taking out ground connection coaxial cable；
Fig. 6 is that replace box structure schematic diagram at the back side in present invention transformation version transposition case；
Fig. 7 is the back side transposition box structure schematic diagram of connection ground connection coaxial cable in the present invention；
Fig. 8 is the back side transposition box structure schematic diagram that coaxial cable jumper is connected in the present invention；
Fig. 9 is the front transposition box structure schematic diagram that coaxial cable jumper is connected in the present invention；
Figure 10 is the back side transposition box structure schematic diagram for installing three core sockets in the present invention at outer core electrode；
Figure 11 is the back side transposition box structure schematic diagram for installing three core sockets in the present invention at interior core electrode；
Figure 12 is the back side transposition box structure schematic diagram that three core sockets are shorted in the present invention；
Figure 13 is present invention front transposition box structure schematic diagram.
Specific embodiment
It is in parallel on cable conductor and sheath this inefficient transformer foundation the present invention is based on the principle of power sources in parallel
One higher transformer of efficiency directly applies voltage to sheath to improve output power, voltage value and phase simulation are true
Power supply is hidden arrangement or is arranged in electrical cabinet by the induced voltage of sheath, and transposition row is close to true operation line in the case that makes to replace
The operating condition on road.
Applying alive scheme can be used nine sets of single-phase isolating transformers or three sets of three-phase isolation transformers, every to simulate
The true phase of phase cable sheath induced voltage, as shown in Figure 1 b；Extended meeting is illustrated further combined with electrical connection diagram afterwards.
The present invention is further elaborated by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing.
A kind of cable sheath grounding circulation simulator provided by the invention, as shown in Fig. 2, by changing to transposition case
It makes, facilitates quickly accessing and removing for transformer, carry out and apply voltage schemes.The transformation version transposition that the simulator is included
Case is front transposition case with former cross interconnected transposition case, increases a back side transposition case on former cross interconnected transposition box foundation,
Sided configuration is formed, front transposition case and back side transposition case respectively correspond the face a and the face b of transformation version transposition case, the transformation version
Transposition case specifically includes: interior core electrode, outer core electrode, ground connection coaxial cable, coaxial cable jumper, three core sockets.
In front transposition case, the bottom of box includes three through-holes 001,002,003, with interior core electrode 011,012,013 1
One is corresponding, also corresponds with outer core electrode 021,022,023；Also by corresponding electrical interconnecting means, to corresponding interior core electrode
With outer core electrode: 011 and 021,012 and 022,013 and 023 be attached, form cross interconnected structure.
The bottom of box includes six through-holes 101,102,103,104,105,106 in back side transposition case, with interior core electrode
111, it 112,113,114,115,116 corresponds, is also corresponded with outer core electrode 121,122,123,124,125,126.
The back side is replaced in case, and three piece-root graftings ground coaxial cable respectively introduces back from outside through through-hole 101,103,105
This section inside face transposition case, includes outer core end and inner core end；These ground connection coaxial cables outer core end, it is correspondingly connected
On outer core electrode 121,123,125, inner core end is correspondingly connected on interior core electrode 111,113,115.Separately there are three bridgings same
Shaft cable, it is fixed overleaf to replace on the remaining outer core electrode of case and remaining interior core electrode, while bridge front transposition case and
Replace case at the back side；These coaxial cable jumpers, it is each to have the first segment being located in back side transposition case by oneself and be located in the positive case that replaces
Second segment；The corresponding through-hole 102,104,106 across back side transposition case of first segment enters in back side transposition case, first segment it is interior
Core end accordingly connects interior core electrode 112,114,116, and the outer core end of first segment accordingly connects outer core electrode 122,124,126；By
The second segment that first segment continues, the corresponding through-hole 001,002,003 across front transposition case enter in front transposition case, second segment
Outer core end accordingly connect outer core electrode 021,022,023, the inner core end of second segment accordingly connect in core electrode 011,012,
013。
The back side is replaced in case, and three core socket 161 of No.1 is connected on outer core electrode 121,123,125, No. two three core sockets
162 are connected on outer core electrode 122,124,126；No. three three core sockets 163, which are connected to, to be connect on interior core electrode 111,113,115,
No. four three core sockets 164 are connected on interior core electrode 112,114,116.
Apply scheme based on electrical connection principle shown in Fig. 2 and above-mentioned voltage, the present invention also provides a kind of cables
Sheath grounding circulation simulator includes: threephase cable system, three sets of transformers, two sets of transformation versions transposition casees；
Threephase cable system further includes more locking terminals 200 and multistage threephase cable 201, and every section of cable sheath is by changing
It is cross interconnected to make version transposition case progress；Transformation version transposition case is also used to access transformer, makes secondary side and the threephase cable of transformer
The sheath of system is connected；Wherein, No.1 transformation version transposition case 230 access No.1 transformer 220 and No. two transformers 221, No. two
Version transposition case 231 is transformed and accesses No. three transformers 222；In the case where dummycable sheath grounding circulation, these transformers are logical
Cross the three core sockets access installed on the back side transposition case of corresponding transformation version transposition case；And the case where simulating true cable load
Under, the three core sockets installed on back side transposition case are shorted.
In conjunction with Fig. 3 to Figure 13, transformation side of the present invention for the case that replaces in above-mentioned cable sheath grounding circulation simulator
Method specifically includes following procedure:
Step 1, as shown in Figure 3 and Figure 4, the initial state of former cross interconnected transposition case, the front of cabinet as shown in figure 3,
Comprising through-hole 001,002,003 (being located at the bottom of box), corresponded with interior core electrode 011,012,013, with outer core electrode
021, it 022,023 also corresponds；By corresponding electrical interconnecting means by corresponding interior core electrode and outer core electrode: 011 and 021,
012 and 022,013 and 023 is attached, and forms cross interconnected structure；Be grounded coaxial cable pass through through-hole 001,002,003 from
After outside introduces cabinet, outer core end, inner core end are accordingly connected to 021,022,023 on outer core electrode, interior core electrode 011,012,
013；The former cross interconnected transposition case back side is cabinet shell, as shown in Figure 4.
Present invention transposition case cross interconnected to the original is transformed, and takes out the ground connection coaxial electrical in former cross interconnected transposition case
Cable, under cable shaft, ground connection coaxial cable ontology does not need to change, and other structures are also without change in front transposition case, such as Fig. 5 institute
Show.
Step 2 replaces case so that original is cross interconnected as the positive case that replaces of version transposition case is transformed in the present invention, increases at its back side
Add a transposition case to make back side transposition case, forms sided configuration；Back side transposition case sets through-hole 101,102,103,104,105,106
(be located at the bottom of box) corresponds with interior core electrode 111,112,113,114,115,116, with outer core electrode 121,122,
123, it 124,125,126 also corresponds, as shown in Figure 6.
Three piece-root graftings extracted out in step 3, step 1 ground coaxial cable, be now each passed through back side transposition case through-hole 101,
103,105, so that its outer core end is accordingly connected to the outer core electrode 121,123,125 of back side transposition case, inner core end is accordingly connected to
The interior core electrode 111,113,115 of back side transposition case, as shown in Figure 7.
Step 4 separately takes three slightly long coaxial cables, as coaxial cable jumper, bridges front transposition case and the back side is changed
The corresponding through-hole 102,104,106 across back side transposition case of position case, i.e. first segment enters in back side transposition case, as shown in Figure 8: the
One section of inner core end accordingly connects interior core electrode 112,114,116, the outer core end of first segment accordingly connect outer core electrode 122,
124,126；The second segment continued by first segment, the corresponding through-hole 001,002,003 across front transposition case enter front transposition
In case, as shown in Figure 9: the outer core end of second segment accordingly connects outer core electrode 021,022,023, and the inner core end of second segment accordingly connects
Connect interior core electrode 011,012,013.
In step 5, back side transposition case, three core socket 161 of No.1 is installed and is connected to the outer core electricity of ground connection coaxial cable
On pole 121,123,125, install No. two three core sockets 162 and be connected to coaxial cable jumper outer core electrode 122,124,
On 126, as shown in Figure 10, three core sockets 161 and 162 can be used as the incoming end of transformer, be used for analogue ground coaxial cable
Mutual voltage, the electric current of outer core.
In step 6, back side transposition case, No. three three core sockets 163 are installed and are connected to ground connection coaxial cable inner core electricity
On pole 111,113,115, install No. four three core sockets 164 and be connected to coaxial cable jumper interior core electrode 112,114,
On 116, as shown in figure 11, three core sockets 163 and 164 can be used as the incoming end of transformer, be used for analogue ground coaxial cable
Mutual voltage, the electric current of inner core.It is omitted in figure and the fixed mechanism of supplementary insulation is realized to devices such as three core sockets.
It can if accordingly accessing transformer on three core sockets 161,162,163,164 for above-mentioned transformation version transposition case
To realize that cable sheath grounding circulation is simulated.Illustratively, three core sockets are for accessing 24V100A three-phase transformer；Three core
Socket insulation against ground grade 1000V or more.
If removing transformer, three core sockets 161 and 162, three core sockets 163 and 164 are carried out using shorting stub and plug
It is shorted, so that ground connection coaxial cable and coaxial cable jumper realize short circuit accordingly, as shown in figure 12.With former cross interconnected transposition
Case is compared, and being equivalent to extends the ground connection coaxial cable of cable system, the length of extended length, that is, coaxial cable jumper,
It can be used to carry out the simulation of true cable load condition.
Regardless of whether carrying out grounding circulation simulation in reverse side, transformation version transposition case front remains original cross interconnected
The structure of transposition is constant as shown in figure 13；It is being electrically connected upper (referring to fig. 2), is also having not been changed the structure of original earthed system.
Compared with prior art, the present invention is by realizing cable sheath grounding circulation simulator to transposition case transformation
It quickly accesses and removes transformer and then simulate true cable sheath grounding circulation phenomenon, be conducive to improve training and teaching effect
Fruit, and apparatus of the present invention are at low cost, are suitable for that training and teaching uses.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
- The case 1. a kind of transformation version replaces, which is characterized in that the transformation version transposition case is sided configuration, comprising front transposition case with Replace case at the back side；Front transposition case is equipped with three groups of corresponding interior core electrodes and outer core electrode, and case is replaced equipped with six groups of corresponding inner core electricity in the back side Pole and outer core electrode；Three piece-root graftings ground coaxial cable, respectively contains inner core end and outer core end；Three piece-root grafting coaxial cable be introduced from outside into back Face is replaced in case, and the outer core end of these ground connection coaxial cables is made accordingly to connect the wherein three outer core electrodes for the case that overleaf replaces On, the inner core end of these ground connection coaxial cables accordingly connects on the wherein three interior core electrodes for the case that overleaf replaces, and connects same Piece-root grafting coaxial cable outer core electrode and interior core electrode belong to same group；Three coaxial cable jumpers bridge front transposition case and back side transposition case, respectively contain and introduce the first of back side transposition case Section and the second segment for introducing front transposition case；The outer core end of the respective first segment of these coaxial cable jumpers, corresponding connection is overleaf It replaces on three outer core electrodes of residue of case, the inner core end of the respective first segment of these coaxial cable jumpers accordingly connects overleaf It replaces on three interior core electrodes of residue of case；The outer core electrode of same root coaxial cable jumper is connected in back side transposition case and interior core electrode belongs to same group；These bridgings The outer core end of the respective second segment of coaxial cable is accordingly connected on three outer core electrodes of front transposition case, these bridgings are coaxially The inner core end of the respective second segment of cable is accordingly connected on three interior core electrodes of front transposition case；Overleaf there are four three core sockets: three outer cores of three core socket of No.1 and dead earth coaxial cable for installation in transposition case Electrode connection, No. two three core sockets are connect with three outer core electrodes of fixed coaxial cable jumper, No. three three core sockets and fixation It is grounded three interior core electrode connections of coaxial cable, three interior core electrodes companies of No. four three core sockets and fixed coaxial cable jumper It connects.
- 2. transformation version transposition case as described in claim 1, which is characterized in that there is transposition to arrange in front transposition case, three groups of inner cores The three-phase of electrode and outer core electrode corresponding power, interior core electrode and the outer core electrode of the second phase, the inner core of the second phase of the first phase Electrode is connected with the outer core electrode of third phase, the interior core electrode of third phase with the outer core electrode of the first phase by corresponding electrical interconnecting means It connects, forms cross interconnected structure.
- 3. transformation version transposition case as described in claim 1, which is characterized in that the bottom of box of front transposition case includes three logical Hole is corresponding with core electrode in three groups of front transposition case and outer core electrode；The bottom of box of back side transposition case includes six through-holes It is corresponding with core electrode in six groups of back side transposition case and outer core electrode；Three piece-root graftings coaxial cable from outside through the back side replace For wherein three through-holes of case to be introduced into back side transposition case, the first segment of three coaxial cable jumpers passes through the surplus of back side transposition case For excess-three through-hole to be introduced into back side transposition case, the second segment of three coaxial cable jumpers passes through three through-holes of front transposition case To be introduced into front transposition case.
- 4. transformation version transposition case as described in claim 1, which is characterized in that in each coaxial cable jumper, replace in front Position between case and back side transposition case enters ground corner.
- 5. a kind of cable sheath grounding circulation simulator is, characterized by comprising: threephase cable system, three phase mains, three sets The transposition case of transformation version described in any one of transformer, two sets of claim 1-4；Threephase cable system further includes more sets Terminal and multistage threephase cable, every section of cable sheath are carried out cross interconnected by transformation version transposition case；Transformation version transposition case also exists When selection access transformer, the secondary side of transformer is made to connect with the sheath of threephase cable system；One of transformation version transposition case Two sets in three sets of transformers are accessed, another remaining a set of transformer of transformation version transposition case access.
- 6. cable sheath grounding circulation simulator as claimed in claim 5, which is characterized in that be grounded in dummycable sheath In the case where circulation, three core sockets of the back side transposition case of each transformation version transposition case access transformer, include: in analogue ground Outside coaxial cable when the mutual voltage of core, electric current, three core socket of No.1 and/or No. two three core sockets connect transformers；Alternatively, When the mutual voltage of analogue ground coaxial cable inner core, electric current, No. three three core sockets and/or No. four three core sockets connect transformations Device.
- 7. cable sheath grounding circulation simulator as claimed in claim 5, which is characterized in that simulating true cable load In the case where, three core socket of No.1 and No. two three core sockets are shorted in the back side transposition case of each transformation version transposition case, and three Number three core sockets and No. four three core sockets are shorted.
- The remodeling method of case 8. transformation version described in a kind of Claims 1 to 4 replaces changes former cross interconnected transposition case It makes, which is characterized in that the remodeling method includes following procedure:Comprising three groups of corresponding interior core electrodes and outer core electrode in the former cross interconnected transposition case of step 1, to three piece-root graftings coaxial electrical The respective inner core end of cable and outer core end accordingly connect；Take out the ground connection coaxial cable in former cross interconnected transposition case；Step 2 is the front transposition case that version transposition case is transformed with former cross interconnected transposition case, increases a back side at its back side and changes Position case, replace case six groups of corresponding interior core electrodes of setting and outer core electrode at the back side；By three piece-root grafting coaxial cable is introduced into the back side transposition case step 3, makes the outer core end phase of these ground connection coaxial cables On wherein three outer core electrodes that the case that overleaf replaces should be connected, the inner core end of these ground connection coaxial cables is accordingly connected overleaf It replaces on wherein three interior core electrodes of case, the outer core electrode and interior core electrode of connection same root ground connection coaxial cable belong to same Group；Step 4 takes three coaxial cable jumpers, bridges front transposition case and back side transposition case；These coaxial cable jumpers are respectively wrapped Second segment containing the first segment and introducing front transposition case that introduce back side transposition case；The respective first segment of these coaxial cable jumpers Outer core end, corresponding connection overleaf replace case three outer core electrodes of residue on, the respective first segment of these coaxial cable jumpers Inner core end, corresponding connection is overleaf on three interior core electrodes of residue of transposition case；Connection same root bridging is same in back side transposition case The outer core electrode and interior core electrode of shaft cable belong to same group；The outer core end of the respective second segment of these coaxial cable jumpers, accordingly It is connected on three outer core electrodes of front transposition case, the inner core end of the respective second segment of these coaxial cable jumpers, corresponding connection On three interior core electrodes of front transposition case；Step 5 back side is replaced in case, three core socket of No.1 is connect with three outer core electrodes of dead earth coaxial cable, by two Number three core sockets are connect with three outer core electrodes of fixed coaxial cable jumper；Step 6 back side is replaced in case, No. three three core sockets is connect with three interior core electrodes of dead earth coaxial cable, by four Number three core sockets are connect with three interior core electrodes of fixed coaxial cable jumper.
- 9. remodeling method as claimed in claim 8, which is characterized in that three core socket of No.1 and No. two three core sockets are as transformation The incoming end of device, mutual voltage, electric current for core outside analogue ground coaxial cable；No. three three core sockets and No. four three core sockets Mutual voltage, electric current as the incoming end of transformer, for analogue ground coaxial cable inner core.
- 10. remodeling method as claimed in claim 8, which is characterized in that access transformer in three core sockets of installation, realize electricity The simulation of cable sheath grounding circulation；Using shorting stub and plug by three core socket of No.1 and No. two three core sockets, No. three three core sockets It is shorted with No. four three core sockets, realizes true cable load condition simulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910696592.8A CN110288888B (en) | 2019-07-30 | 2019-07-30 | Cable sheath grounding circular flow simulation device and transformation method of transposition box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910696592.8A CN110288888B (en) | 2019-07-30 | 2019-07-30 | Cable sheath grounding circular flow simulation device and transformation method of transposition box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110288888A true CN110288888A (en) | 2019-09-27 |
| CN110288888B CN110288888B (en) | 2024-01-30 |
Family
ID=68024232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910696592.8A Active CN110288888B (en) | 2019-07-30 | 2019-07-30 | Cable sheath grounding circular flow simulation device and transformation method of transposition box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110288888B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462188A (en) * | 2020-10-16 | 2021-03-09 | 国网山东省电力公司济宁供电公司 | Grounding circulation simulation device and detection method based on running transmission cable line |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1152003A (en) * | 1997-08-08 | 1999-02-26 | Toshiba Corp | Apparatus for diagnosing partial discharge of gas-insulated electric apparatus |
| JP2003087917A (en) * | 2002-08-30 | 2003-03-20 | Hitachi Ltd | Gas-insulated apparatus and gas-insulated switchgear |
| CN203674680U (en) * | 2013-12-25 | 2014-06-25 | 浙江万马集团电气有限公司 | Sealing anti-flood cross interconnection grounding box |
| CN204631105U (en) * | 2015-03-31 | 2015-09-09 | 甘肃丽铭电力科技有限公司 | A kind of cable sheath grounding circulation monitoring device |
| CN204925247U (en) * | 2015-07-28 | 2015-12-30 | 国网天津市电力公司 | Portable high tension cable cross -bonding system nuclear phase meter |
| CN105322497A (en) * | 2015-12-10 | 2016-02-10 | 广东电网有限责任公司东莞供电局 | Multifunctional high-voltage cable grounding box |
| CN106093527A (en) * | 2016-07-13 | 2016-11-09 | 许继集团有限公司 | The mutual header of intelligent crossover, intelligent interconnection earthed system and earth current monitoring method |
| CN108389847A (en) * | 2018-05-09 | 2018-08-10 | 宁波大学 | A kind of three-dimensional capacitor and preparation method thereof based on coaxial through-silicon via array |
| CN207946489U (en) * | 2018-03-20 | 2018-10-09 | 国网江苏省电力有限公司南京供电分公司 | A kind of novel grounded electric current observable high-tension cable cross connection grounding case |
| CN110022083A (en) * | 2019-05-14 | 2019-07-16 | 中国工程物理研究院流体物理研究所 | A kind of Impulsive Current device by transmission cable peaking electric current |
-
2019
- 2019-07-30 CN CN201910696592.8A patent/CN110288888B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1152003A (en) * | 1997-08-08 | 1999-02-26 | Toshiba Corp | Apparatus for diagnosing partial discharge of gas-insulated electric apparatus |
| JP2003087917A (en) * | 2002-08-30 | 2003-03-20 | Hitachi Ltd | Gas-insulated apparatus and gas-insulated switchgear |
| CN203674680U (en) * | 2013-12-25 | 2014-06-25 | 浙江万马集团电气有限公司 | Sealing anti-flood cross interconnection grounding box |
| CN204631105U (en) * | 2015-03-31 | 2015-09-09 | 甘肃丽铭电力科技有限公司 | A kind of cable sheath grounding circulation monitoring device |
| CN204925247U (en) * | 2015-07-28 | 2015-12-30 | 国网天津市电力公司 | Portable high tension cable cross -bonding system nuclear phase meter |
| CN105322497A (en) * | 2015-12-10 | 2016-02-10 | 广东电网有限责任公司东莞供电局 | Multifunctional high-voltage cable grounding box |
| CN106093527A (en) * | 2016-07-13 | 2016-11-09 | 许继集团有限公司 | The mutual header of intelligent crossover, intelligent interconnection earthed system and earth current monitoring method |
| CN207946489U (en) * | 2018-03-20 | 2018-10-09 | 国网江苏省电力有限公司南京供电分公司 | A kind of novel grounded electric current observable high-tension cable cross connection grounding case |
| CN108389847A (en) * | 2018-05-09 | 2018-08-10 | 宁波大学 | A kind of three-dimensional capacitor and preparation method thereof based on coaxial through-silicon via array |
| CN110022083A (en) * | 2019-05-14 | 2019-07-16 | 中国工程物理研究院流体物理研究所 | A kind of Impulsive Current device by transmission cable peaking electric current |
Non-Patent Citations (5)
| Title |
|---|
| YANG YANG, DONALD M. HEPBURN, CHENGKE ZHOU , WENJUN ZHOU , WEI JIANG , ZHI TIAN: "On-line monitoring and analysis of the dielectric loss in cross-bonded HV cable system", ELECTRIC POWER SYSTEMS RESEARCH, pages 89 - 101 * |
| 成健;黎玉强;刘文东;王晨阳;: "一种单芯电缆护层电压补偿与环流限制技术分析", 通信电源技术, no. 01, pages 96 - 99 * |
| 曹国滨，付大志，张旭，王军: "电火花震源能量传输和释放系统的改造", 石油仪器, vol. 19, no. 1, pages 65 - 67 * |
| 李秋明;李壮;: "单芯电缆线路接地系统的分析及处理", 冶金动力, no. 04, pages 5 - 7 * |
| 王锦明，徐明良，方菊，徐甜，贾超: "高压电缆混合接地箱的制造与运用", 装备应用与研究, no. 24, pages 43 - 44 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462188A (en) * | 2020-10-16 | 2021-03-09 | 国网山东省电力公司济宁供电公司 | Grounding circulation simulation device and detection method based on running transmission cable line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110288888B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105403810A (en) | Universal testing system and method of line selection apparatus of low-current grounding system | |
| Salam | Fundamentals of electrical power systems analysis | |
| CN110288888A (en) | A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces | |
| Vernay et al. | Application of frequency-dependent network equivalents for EMTP simulation of transformer inrush current in large networks | |
| CN103559406B (en) | A kind of super-pressure GIS pressure tests analogue system and method | |
| Liao et al. | Evaluation of voltage imbalance on low‐voltage distribution networks considering delta‐connected distribution transformers with a symmetrical NGS | |
| CN205450042U (en) | Experimental switching operation platform of power transformer | |
| CN110491227A (en) | Cable fault simulation device | |
| CN210955727U (en) | Cable sheath grounding circulation simulation device and modified version transposition box | |
| Corcoles et al. | Three-phase transformer modelling for unbalanced conditions. Part 1: Core modelling and introductory examples | |
| CN112285492B (en) | Power distribution network ground fault test system and method | |
| Dugan et al. | Harmonics And Reactive Power From Line-Commutated Inverters In Propposed Photovoltaic Subdivision | |
| CN210119905U (en) | Physical simulation examination and cultivation integrated system for transformer on special operation column | |
| Chen et al. | Two-port equivalent circuit model for UHVDC converter valves | |
| Mayordomo et al. | Compact and flexible three-phase power flow based on a full Newton formulation | |
| Mohseni et al. | New laboratories in High Voltage Institute of University of Tehran for teaching power engineering courses | |
| CN217721015U (en) | Seven-core cable simulation box | |
| CN206224875U (en) | A kind of high-tension cable cross connection grounding system simulation device | |
| Penido et al. | Unbalanced three-phase distribution system load-flow studies including induction machines | |
| Mazloom et al. | A method for interfacing lumped-circuit models and transmission-line system models with application to railways | |
| CN219496540U (en) | Simulation unbalanced current testing arrangement | |
| CN110175347A (en) | A kind of configuration method of main electrical scheme, terminal and computer readable storage medium | |
| CN218647123U (en) | Device for short circuit test of high-voltage power supply system | |
| Xie et al. | Study on Potential Transfer Model Considering Dynamic Arc Characteristics | |
| CN207781030U (en) | A kind of the high and low pressure side winding and core insulation fault simulator of transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |