CN208209514U - A kind of high resistance ground experimental rig - Google Patents
A kind of high resistance ground experimental rig Download PDFInfo
- Publication number
- CN208209514U CN208209514U CN201820267528.9U CN201820267528U CN208209514U CN 208209514 U CN208209514 U CN 208209514U CN 201820267528 U CN201820267528 U CN 201820267528U CN 208209514 U CN208209514 U CN 208209514U
- Authority
- CN
- China
- Prior art keywords
- ground
- grounded
- phase
- way
- tension fuse
- 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.)
- Active
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model provides a kind of high resistance ground experimental rig; it is related to operation of power networks field; including split-phase breaker, zero sequence current mutual inductor; the zero sequence current mutual inductor series connection tetra- tunnel split-phase breaker Hou Fen; it is grounded after capacitor, electrification display all the way; it is connected to disconnecting switch all the way; it is connected to one end of high-tension fuse all the way; the other end of the high-tension fuse is followed by ground through over-voltage protector, and the other end of the high-tension fuse is also grounded after voltage transformer, heavy damping resonance eliminator；The utility model provides a kind of high resistance ground experimental rig, and when two-phase open circuit occurs for system, Setup Controller is by zero sequence current mutual inductor current signal, the back salvo quickly by breaker open operation, as two-phase switchgear itself.
Description
Technical field
The utility model relates to operation of power networks fields, and in particular to a kind of high resistance ground experimental rig.
Background technique
In ultra-high-tension power transmission line, as lightning stroke, branch streak single-phase high-impedance caused by electric wire etc., because of its therefore
Barrier amount is unobvious and is difficult to effectively detect.Usually since malfunction monitoring is not capable after line fault, make system long-time tape jam
Operation may cause phase insulation breakdown, be converted into phase-to phase fault, expand fault coverage.Therefore, in recent years to how detecting
Single-phase high-impedance has carried out a large amount of extensive researchs.Normal switching operation in practical power systems, such as shunt capacitance
The variation of Current Voltage caused by device switching, idle-loaded switching-on, single-pole reclosing, operation transient state etc. is likely to be taken as failure and mistake
Movement, the failure amount variation characteristic of especially high resistance earthing fault is unobvious to be easier to be influenced by these operations；Route simultaneously
The failure electricity phase current that single-phase high-impedance occurs is smaller, and for false voltage without significantly falling, this is protective device examination
Fault message brings certain difficulty.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of high resistance ground experimental rig, can quickly by
Breaker open operation.
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of high resistance ground test dress
It sets, including split-phase breaker, zero sequence current mutual inductor, the zero sequence current mutual inductor series connection tetra- tunnel split-phase breaker Hou Fen, one
Road is grounded after capacitor, electrification display, is connected to disconnecting switch all the way, is connected to one end of high-tension fuse all the way, described
The other end of high-tension fuse is followed by ground through over-voltage protector, and the other end of the high-tension fuse also passes through mutual induction of voltage
It is grounded after device, heavy damping resonance eliminator.
The high resistance ground device includes three-phase transformer, ground resistance, inductance coil and capacitor, the inductance coil with
Capacitor series connection is grounded again, and ground resistance is directly grounded by fling-cut switch K1 or discharged in series resistance is indirect by fling-cut switch K2
Ground connection.
The utility model provides a kind of high resistance ground experimental rig, and when two-phase open circuit occurs for system, Setup Controller is logical
Zero sequence current mutual inductor current signal is crossed, quickly by breaker open operation, the back as two-phase switchgear itself protects hand
Section.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the schematic diagram of the embodiments of the present invention 2.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the utility model, it should be noted that the side of the instructions such as term "vertical", "upper", "lower", "horizontal"
Position or positional relationship be orientation based on the figure or positional relationship, be merely for convenience of description this it is practical and simplification retouch
State, rather than indicate or imply that signified device or element must have a particular orientation, with specific orientation construction and
Operation, therefore should not be understood as limiting the present invention.In addition, " first ", " second ", " third ", " the 4th " are only used for
Purpose is described, and should not be understood as indicating or implying relative importance.
In the description of the utility model, it is also necessary to which explanation " is set unless otherwise specific regulation and limitation, term
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or be integrally connected, it can be mechanical connection, be also possible to be electrically connected, can be and be directly connected to, be also possible to through intermediate matchmaker
It is situated between and is connected, can be the connection inside two elements.It for the ordinary skill in the art, can be as the case may be
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
As shown in Figure 1, a kind of high resistance ground experimental rig, including split-phase breaker 3, zero sequence current mutual inductor 4, described zero
The series connection of sequence current transformer 4 tetra- tunnel 3 Hou Fen of split-phase breaker, 2 ground connection after capacitor, electrification display, is connected to all the way all the way
Disconnecting switch 1 is connected to one end of high-tension fuse 5 all the way, and the other end of the high-tension fuse 5 is through over-voltage protector 6
After be grounded, the other end of the high-tension fuse 5 is also grounded after voltage transformer 7, heavy damping resonance eliminator 8.
Embodiment 2:
A kind of high resistance ground experimental rig, including split-phase breaker 3, zero sequence current mutual inductor 4, the zero sequence current mutual inductance
The series connection of device 4 tetra- tunnel 3 Hou Fen of split-phase breaker, 2 ground connection after capacitor, electrification display, is connected to disconnecting switch 1 all the way all the way,
It is connected to one end of high-tension fuse 5 all the way, the other end of the high-tension fuse 5 is grounded after over-voltage protector 6, described
The other end of the high-tension fuse 5 is also grounded after voltage transformer 7, heavy damping resonance eliminator 8.
As shown in Figure 2, it is preferable that the high resistance ground device includes three-phase transformer, ground resistance, inductance coil and electricity
Hold, the inductance coil is connected in series to the capacitor to be grounded again, and ground resistance is directly grounded by fling-cut switch K1 or discharged in series resistance
It is indirect earthed by fling-cut switch K2.
Working principle is as follows:
1, when system operates normally, analogue ground fling-cut switch in line side is in open position, the contact of device inner vacuum
Device is in open position, the real-time collection voltages mutual inductor secondary side voltage signal of controller
2, when single-phase wire break failure occurs for system, fast and accurately data-handling capacity is real using computer for controller
Existing fast Fourier analysis, by the acquisition to PT voltage, starting is interrupted, and identifies that broken string is separate and alarms；
3, when systems are functioning properly, investment ground connection fling-cut switch K1, system occur to connect through high resistant substantivity metal at this time
Ground, Setup Controller are interrupted by the acquisition to PT voltage, starting, identify that broken string is separate and alarms, and are issued corresponding separate disconnected
Road device switching signal, is converted to direct metallic ground, and overvoltage is controlled in protection circuit suppression；
4, when systems are functioning properly, investment ground connection fling-cut switch K2, system occur to connect through high resistant indirect arc light at this time
Ground, Setup Controller are interrupted by the acquisition to PT voltage, starting, identify that broken string is separate and alarms, and are issued corresponding separate disconnected
Road device switching signal, is converted to direct metallic ground, and overvoltage is controlled in protection circuit suppression.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (2)
1. a kind of high resistance ground experimental rig, which is characterized in that including split-phase breaker, zero sequence current mutual inductor, the zero sequence
Current transformer series connection tetra- tunnel split-phase breaker Hou Fen, is grounded after capacitor, electrification display all the way, is connected to keeps apart all the way
It closes, is connected to one end of high-tension fuse all the way, the other end of the high-tension fuse is followed by ground through over-voltage protector, described
The other end of high-tension fuse is also grounded after voltage transformer, heavy damping resonance eliminator.
2. high resistance ground experimental rig as described in claim 1, which is characterized in that the high resistance ground device includes three phase transformations
Depressor, ground resistance, inductance coil and capacitor, the inductance coil is connected in series to the capacitor to be grounded again, and ground resistance is opened by switching
Pass K1 is directly grounded or discharged in series resistance is indirect earthed by fling-cut switch K2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820267528.9U CN208209514U (en) | 2018-02-24 | 2018-02-24 | A kind of high resistance ground experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820267528.9U CN208209514U (en) | 2018-02-24 | 2018-02-24 | A kind of high resistance ground experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208209514U true CN208209514U (en) | 2018-12-07 |
Family
ID=64535309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820267528.9U Active CN208209514U (en) | 2018-02-24 | 2018-02-24 | A kind of high resistance ground experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208209514U (en) |
-
2018
- 2018-02-24 CN CN201820267528.9U patent/CN208209514U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104991162B (en) | A kind of positioning device and application method of single-phase grounded malfunction in grounded system of low current | |
| CN103208788B (en) | Intelligent Dynamic power network neutral point earthing method and the complete sets of equipment | |
| CN106655120A (en) | Intelligent ground protection method and system for neutral point of power distribution network | |
| CN104678260A (en) | System and method for single-phase grounding line selection of small current grounding system | |
| CN203151088U (en) | Single-phase grounding fault isolation device | |
| CN105356441A (en) | Intelligent PT harmonic elimination and phase selection method and device | |
| CN205544206U (en) | Intelligence PT harmonic elimination selects device of looks | |
| EP4046249B1 (en) | High voltage overhead electric transmission line equipped with switchgear unit | |
| CN109274070A (en) | 10 kilovoltage mutual inductors of one kind protection system and guard method | |
| CN106329509B (en) | The small current earthing wire-selecting of neutral point of electric network isolated neutral system protects system | |
| CN203519768U (en) | Traveling-wave signal extraction equipment and system for single-phase earth fault | |
| CN102332707B (en) | Earth fault signal measuring method and protective device for ungrounded system | |
| CN204441884U (en) | A kind of grounding through arc compensates pressure limiting device | |
| CN201207564Y (en) | Protection device for transformer earthing | |
| CN210608530U (en) | Arc suppression cabinet and small current grounding system | |
| CN110048335A (en) | A kind of switchgear | |
| CN208209514U (en) | A kind of high resistance ground experimental rig | |
| CN110535116A (en) | A kind of arc extinction cabinet and small current neutral grounding system | |
| CN106841920B (en) | The judgement of distribution line real time fail and Fault Locating Method | |
| CN109378144A (en) | A kind of combinational gap device and preparation method thereof changing gapless arrestyer protection mechanism | |
| CN212323701U (en) | Novel differential line selection comprehensive grounding protection device | |
| CN105207173A (en) | Device and method for monitoring, controlling and eliminating multipoint grounding of high-capacity transformer | |
| CN207992363U (en) | Singlephase earth fault circuit monitoring system | |
| CN209086373U (en) | TXLR type effectively earthed system direct current decoupling device | |
| CN105048411A (en) | 220 kV transformer neutral point gap action control device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |