CN201388000Y - Intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet - Google Patents
Intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet Download PDFInfo
- Publication number
- CN201388000Y CN201388000Y CN200920024111U CN200920024111U CN201388000Y CN 201388000 Y CN201388000 Y CN 201388000Y CN 200920024111 U CN200920024111 U CN 200920024111U CN 200920024111 U CN200920024111 U CN 200920024111U CN 201388000 Y CN201388000 Y CN 201388000Y
- Authority
- CN
- China
- Prior art keywords
- cabinet
- bus bar
- voltage
- line selection
- arc extinguishing
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 5
- 230000001012 protector Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet, belonging to the technical field of over voltage protection devices. The intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet comprises a cabinet body provided with a duplicate bus bar incoming cabinet and is characterized in that two groups of high-voltage current limiting fuses are arranged in the cabinet body; and two groups of vacuum contactors, high voltage capacitors, voltage transformers and over voltage protectors are arranged at the bottom of the cabinet body. The line selection duplicate bus bar cabinet has the functions extinguishing arc for one time and eliminating harmonics for two times and at the same time has the function of a PT cabinet, thereby saving a PT cabinet for the system and saving cost.
Description
Technical field
The utility model belongs to a kind of overvoltage protection, is specifically related to a kind of intelligent extinguishing arc resonance eliminating wire-selection double-bus cabinet.
Background technology
The electrical network of China 3～35kV (66kV) non_direct ground, when Single Phase Metal ground connection is taken place, the voltage to earth of all the other two-phases will be increased to line voltage (UL), thereby the electric equipment of this class electrical network, insulation against ground level as transformer, voltage/current instrument transformer, circuit breaker, cable line etc. can both satisfy the requirement of bearing the effect of line voltage for a long time and not damaging.
Traditional concept is unilateral to be thought, 3～35kV electrical network belongs to medium voltage distribution network, and the amplitude of internal overvoltage is not high in this type of electrical network, so the principal element that jeopardizes line insulation safety should not be an internal overvoltage, but atmospheric over-voltage.Thereby the overvoltage protection measure of taking for a long time is only at preventing atmospheric over-voltage, and the major technique measure only limits to install various types of lightning arresters, and its protection value is higher, does not play any protective effect for internal overvoltage.
Yet along with the development of electrical network, overhead transmission line is progressively replaced by the cable line of solid insulation.Because the build-up effect that solid insulation punctures, its internal overvoltage, particularly arc grounding overvoltage that produces during electrical network generation single phase intermittent arc grounding and the ferro-resonance over-voltage that excites have therefrom become one of this class electric power netting safe running and have threatened greatly.Wherein serious with single-phase arc grounding overvoltage.
Existing operating standard regulation when non-direct ground system generation single phase ground fault, allows to continue operation two hours, as through the approval of higher level department, can also prolong.If single phase ground fault is an arc grounding, then its overvoltage can reach the peak value of 3.5 times of normal operation phase voltages, under high like this overvoltage continuous action, certainly will cause the accumulation damage of insulation of electrical installation, cause in the insulation weak link that perfects phase to puncture over the ground and then cause the phase fault accident.
Summary of the invention
The utility model purpose provides a kind of intelligent extinguishing arc resonance eliminating wire-selection double-bus cabinet, the utlity model has extinguishing arc secondary harmonic elimination function one time, has PT cabinet function simultaneously.
The following technical scheme of the concrete employing of the utility model:
A kind of intelligent extinguishing arc resonance eliminating wire-selection double-bus cabinet; comprise cabinet, described cabinet has double-bus and advances cabinet, it is characterized in that; two groups of high-voltage and current-limitation fuses are set in the cabinet, and bottom of cabinet bulk is provided with two groups of vacuum contactors, high-voltage capacitor, voltage transformer, overcurrent protection device.
Compared with prior art, advantage of the present utility model is:
1) the utlity model has twice harmonic elimination function of an extinguishing arc, integrated PT cabinet function for system saves a PT cabinet, is saved cost simultaneously.
2) the utility model double-bus can be used alternatingly, the extinguishing arc harmonic elimination.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure, 1 is intelligent controller, and 2,2 ' is high-voltage and current-limitation fuse, and 3,3 ' is vacuum contactor, and 4 is high-voltage capacitor, and 5 is voltage transformer, and 6 is the overcurrent protection device.
Embodiment
Embodiment
As shown in Figure 1; a kind of intelligent extinguishing arc resonance eliminating wire-selection double-bus cabinet; comprise cabinet; described cabinet has double-bus; two groups of high-voltage and current-limitation fuses (2,2 ') are set in the cabinet, and bottom of cabinet bulk is provided with two groups of vacuum contactors (3,3 '), high-voltage capacitor 4, voltage transformer 5, overcurrent protection device 6.
The utility model electrical schematic is identical with existing basic fundamental.
Claims (1)
1. intelligent extinguishing arc resonance eliminating wire-selection double-bus cabinet; comprise cabinet, described cabinet has double-bus and advances cabinet, it is characterized in that; two groups of high-voltage and current-limitation fuses are set in the cabinet, and bottom of cabinet bulk is provided with two groups of vacuum contactors, high-voltage capacitor, voltage transformer, overcurrent protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024111U CN201388000Y (en) | 2009-03-24 | 2009-03-24 | Intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920024111U CN201388000Y (en) | 2009-03-24 | 2009-03-24 | Intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388000Y true CN201388000Y (en) | 2010-01-20 |
Family
ID=41580542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920024111U Expired - Fee Related CN201388000Y (en) | 2009-03-24 | 2009-03-24 | Intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388000Y (en) |
-
2009
- 2009-03-24 CN CN200920024111U patent/CN201388000Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2912069Y (en) | Over-voltage protector of large power dynamo | |
| CN2884641Y (en) | Overvoltage limit and small current earthing selective integrator of power transfer and distribution system | |
| CN2817170Y (en) | Arc-resonance extinction route-selecting over voltage protection device | |
| CN201478821U (en) | Three-phase power grid neutral point indirect grounding system overvoltage protection device | |
| CN203180518U (en) | Intelligent switch arc-extinguishing and overvoltage-protecting device | |
| CN200953472Y (en) | Electric power transmitting and distributing system arc light over-voltage comprehensive limiting device | |
| CN201004553Y (en) | Arc over voltage limit for power transmission and distribution system and integrated device for small current grounding and line selection | |
| CN102290805A (en) | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system | |
| CN2722487Y (en) | Arc and resonance extinction and overvoltage protector | |
| CN208401544U (en) | A kind of over-voltage protector of energy-absorbing cumulative | |
| CN202513569U (en) | Transformer neutral point overvoltage protector | |
| CN201388042Y (en) | Central high-voltage switch equal-height cabinet | |
| CN201887444U (en) | Electric grounding comprehensive protector for TXHPT | |
| CN201388000Y (en) | Intelligent arc extinguishing and harmonic eliminating line selection duplicate bus bar cabinet | |
| CN201388001Y (en) | RZX type arc extinguishing and harmonic eliminating line selection cabinet | |
| CN201388009Y (en) | Central isolated handcart type arc extinction, harmonic elimination and route selection device | |
| CN201387999Y (en) | Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device | |
| CN203660531U (en) | Novel intelligent arc-extinguishing and over-voltage protection device | |
| CN209844556U (en) | Compact cabinet type 35kV high-voltage parallel capacitor device | |
| CN2559153Y (en) | Arc-extinguishing and overvoltage protection device | |
| CN201388051Y (en) | GG-1A type arc extinguishing and harmonic eliminating line selection device | |
| CN205263529U (en) | Controllable elimination three -phase ferroresonance's electric power system model based on DSP | |
| CN2604019Y (en) | Transient state attack voltage suppressor | |
| CN214626350U (en) | Low residual voltage bus protector | |
| CN203312816U (en) | Shunt reactor compensation circuit for substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20140324 |