CN205264354U - Spiral tubular damping generating line - Google Patents
Spiral tubular damping generating line Download PDFInfo
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- CN205264354U CN205264354U CN201520657139.3U CN201520657139U CN205264354U CN 205264354 U CN205264354 U CN 205264354U CN 201520657139 U CN201520657139 U CN 201520657139U CN 205264354 U CN205264354 U CN 205264354U
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- 238000013016 damping Methods 0.000 title claims abstract description 72
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012806 monitoring device Methods 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241000411036 Lestes helix Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a spiral tubular damping generating line, the device adopts the spiral tubular damping generating line that can consume the electronic current energy, the contact tube manufacturing of damping generating line becomes out the helicla flute structure, forms the spiral pipe. The utility model discloses can suppress the VFTO who forms among the GIS, reduce its amplitude and frequency by a wide margin, start with from primary equipment, improve the electronic transformer that uses and other status monitoring device's secondary system's operational reliability among the GIS, reduce its accident rate, promote to use the foundation of electronic transformer as the intelligent substation of representative. Through the mode that changes the generating line wave impedance, increase generating line active loss, restrain the development of travelling wave to the realization reduces VFTO's amplitude, reduces the purpose of VFTO frequency.
Description
Technical field
The utility model relates to a kind of device of operation of power networks, is specifically related to a kind of helix tube type damping bus.
Background technology
Gas insulated combined electrical equipment (GIS) built-in electrical insulation performance is good, bus do not have corona thereby loss very little,When isolator operation, on bus, residual charge easily forms catadioptric row ripple on bus section, busbar section. This row ripple,Amplitude and frequency are all very high, are referred to as quick steep wave overvoltage (VFTO). VFTO upper limiting frequency can reach 5MHzTo 40MHz, this can produce harm, spy to GIS built-in electrical insulation support member, disc insulator and other partsThe harm that is not transformer to being connected with GIS by oil-gas casing, reactor is larger. GIS electric pressureHigher, the relative dielectric level of primary equipment reduces, and VFTO exists the various harm risks that produce just to get overHigh.
VFTO not only endangers primary equipment, also very serious to the harm of electrical secondary system. The reach of secondary weak electricity systemNear primary equipment. Near primary equipment, condition monitoring system has also been installed in a large number simultaneously. Operation discovery,The overvoltage that isolator operation produces, is to cause one of main reason of secondary failure, is particularly arranged onNear electrical secondary system fault rate primary equipment is very high.
VFTO is very strong to air-launched high-frequency interferencing signal by GIS outlet casing tube. Test platform is attachedNear electrical secondary system that charged apparatus for checking connects, also usually breaks down. As intelligent grid primary equipmentOne of feature, the fault rate of electronic mutual inductor is also very high, and often occurs in electrical secondary system, comprises prepositionCircuit, capture card and data processing unit, cause deadlock, mess code or damage. One of them material impact because ofElement is exactly that the electromagnetic interference that produces of isolator operation causes, and comprises once establishing that isolator operation causesStandby earth terminal moment earth potential raises.
Utility model content
For overcoming above-mentioned defect, the utility model provides a kind of helix tube type damping bus. Adopt one section of energyEnough consume the helix tube type damping bus of electron stream energy, by changing the mode of bus wave impedance, increase femaleLine active loss, suppresses the development of row ripple, reaches the amplitude that reduces VFTO, reduces the object of VFTO frequency.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of helix tube type damping bus, described damping bus adopts the helix tube that can consume electron stream energyFormula damping bus;
The contact tube of described damping bus is the helix tube of helical groove structure;
Interval between described helicla flute is equal, and the width of groove radially diminishes from outside to inside gradually at it, and formation is put, there is electric discharge loss bus-bar charge energy in electricity gap.
Described helicla flute two ends can damping resistance in parallel, and damping resistance in parallel divides single turn parallel connection or multiturn alsoConnection;
The single turn parallel connection of damping resistance refers to the circuit that contains damping resistance R in parallel with helicla flute;
The multiturn parallel connection of damping resistance refers to series connection in parallel multiple described single turns.
The described circuit that contains damping resistance R is: by damping resistance R and remaining inductance LRSeries connection, after series connectionIn parallel with turn-to-turn inductance L, the circuit after parallel connection is connected with turn-to-turn gap g and turn-to-turn gap discharge arc road resistance rAfter circuit parallel connection.
Described multiturn parallel connection comprises: 2 circle parallel connections, 3 circle parallel connections, 4 circles parallel connection or 5 circle parallel connections.
Described damping resistance is arranged in the middle of damping bus contact tube, improves the mechanical strength of damping bus, subtractsThe remaining inductance of few damping resistance.
The damping resistance of the helix tube turn-to-turn parallel connection of described damping bus is cascaded, and damping resistance is logicalCross inserts or a spring section and helix tube electrical connection.
The resistance size of described damping resistance R can regulate. Described remaining inductance LRThe number of turn and induction reactance flatSide is directly proportional. Resistor rod is installed at the middle part of damping bus helix tube. Described resistor rod is along the axial side of helix tubeTo the inside that is arranged on helix tube, resistor rod and helix tube use electrical connection.
With immediate prior art ratio, the utlity model has following excellent effect:
The VFTO that the utility model can suppress to form in GIS, significantly reduces its amplitude and frequency, from once establishingStandby starting with, the work of the electronic mutual inductor using in raising GIS and the electrical secondary system of other state monitoring apparatusReliability, reduces its accident rate, promotes the foundation of the intelligent substation taking electronic mutual inductor as representative.
The utility model adopts one section of helix tube type damping bus that can consume electron stream energy, by changingThe mode of bus wave impedance, increases bus active loss, suppresses the development of row ripple, reduces VFTO thereby realizeAmplitude, reduce the object of VFTO frequency. This design had both been applicable to existing GIS pipeline to transform, againNovel GIS pipe design is played to directive function, and the foundation of the transformation to old transformer station and new transformer station has heavilyWant meaning.
The utility model, in the design and manufacture of damping bus, has been considered the system that GIS bus will bearThe fuel factor that short circuit current causes and mechanical force impact, considered that GIS bus current normally moves the temperature rise of generationEffect, makes it to have good compatibility with current power system.
Brief description of the drawings
Fig. 1 is the basic circuit diagram that VFTO forms.
Fig. 2 is that damping bus suppresses VFTO circuit diagram.
Fig. 3 is inductance and the damping resistance distribution schematic diagram of damping bus.
Fig. 4 is band spiral fluted damping bus pipe exterior view.
Fig. 5 is the transverse cross-sectional view of Fig. 4.
Fig. 6 is helix tube cross-sectional flow area schematic diagram.
Fig. 7 is bus helix tube resistor rod scheme of installation.
Wherein, 1: tube wall; 2: tube chamber; 3: inserts; 4: bolt; 5: bus tube wall; 6: insulating bar;7: connect wire.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail:
The generation principle of VFTO, can simply describe with Fig. 1. In GIS, there are two sections of buses, wave impedanceBe respectively Z1And Z2, electrically charged G respectively1And G2, in the time that switch k closes a floodgate, electric charge G1And G2To again existOn bus, distribute. Due to insulating properties good in GIS, in bus-bar charge re-allocation process, energy lossVery faint, generation row ripple is very high in bus two ends catadioptric formation amplitude, frequency reaches 5 to 40MHz VFTO.
In GIS, change the wave impedance of one section of bus, with the form of damping bus, i.e. inductance L damping in parallelThe form of resistance R, row ripple forms high voltage in remaining inductance section, and its two ends damping resistance is done at high voltageAbsorb row wave energy with getting off, as shown in Figure 2.
The energy of VFTO self is very little, in transmitting procedure, as long as increase a small amount of active loss, just can reduce widthValue and frequency. The existence of inductance L, has increased row ripple two-way time, reduces VFTO frequency, improves simultaneouslyThe voltage of damping resistance R end, makes row ripple flow of charge produce energy consumption through R.
The inductance L of damping bus and damping resistance R realize with element with distributed parameters, as shown in Figure 3. LiRepresent the inductance value of every circle; RiBe the damping resistance that is connected in parallel on turn-to-turn, be in series with remaining inductance LRi，RiResistanceSize can regulate; g0For turn-to-turn gap, riFor turn-to-turn gap discharge arc road resistance. Due to air core inductor eachMutual Inductance Coupling effect between winding, square being directly proportional of the number of turn of remaining inductance L and induction reactance.
The primary structure feature of damping bus is, bus pipe spiral way is drawn to hollow slots, forms helix tube,As shown in Figure 4. Draw hollow slots and play discharging gap giEffect, discharge channel form loss resistance riRepresent.
Draw hollow slots and be less than near the outer side clearance of bus pipe by the gap of bus pipe inner side, make helix tube turn-to-turnWhen breakdown between adjacent turns that row wave voltage causes, discharge channel occurs near bus duct inwall, reduces electric sparkFlash, guarantee the major insulation of bus pipe to the GIS pipeline body. Helix tube cross-sectional flow area S simultaneously2Be not less thanThe originally cross-sectional flow area S of bus pipe1, the through-current capability when ensureing that bus normally moves. Here S1＝0.5(φ1+φ2)π，S2＝0.5×(φ1-φ3) × l. Helix tube cross-sectional flow area schematic diagram as shown in Figure 5.
When rated voltage is equal to or less than the GIS of 500kV, can not be by original bus pipe structure, design systemMake the damping bus that size should be greater than original geometric parameter, to ensure the inductance value of helix tube. Bus helix tubeMiddle part settle resistor rod, as shown in Figure 6. Resistor rod, except bearing the effect of damping resistance R, also will riseTo the supporting role of bus helix tube. The every circle of helix tube adopts the electric company of inserts with the resistor rod that is placed in middle partConnect or spring leaf electrical connection, form inductance circuit in parallel with a resistor, be expert under ripple effect, because of helix tube motherLine inductance value is higher than conventional bus pipe, and turn-to-turn forms voltage difference, and resistance and discharging gap all can loss row wave energyAmount, reaches the object that reduces row wave amplitude, reduces row ripple frequency.
Need statement, the utility model content and detailed description of the invention are intended to prove that the utility model carriesFor the practical application of technical scheme, should not be construed as the restriction to the utility model protection domain. This area skillArt personnel, under spirit of the present utility model and principle inspiration, can do various amendments, be equal to and replace or improve.But in the protection domain that these changes or amendment are all awaited the reply in application.
Claims (10)
1. a helix tube type damping bus, is characterized in that: described damping bus adopts can consume electronicsThe helix tube type damping bus of stream energy;
The contact tube of described damping bus is the helix tube of helical groove structure;
Interval between described helicla flute is equal, and the width of groove radially diminishes from outside to inside gradually at it, and formation is put, there is electric discharge loss bus-bar charge energy in electricity gap.
2. damping bus according to claim 1, is characterized in that: described helicla flute two ends can be alsoConnection damping resistance, damping resistance in parallel divides single turn parallel connection or multiturn parallel connection;
The single turn parallel connection of damping resistance refers to the circuit that contains damping resistance R in parallel with helicla flute;
The multiturn parallel connection of damping resistance refers to series connection in parallel multiple described single turns.
3. damping bus according to claim 2, is characterized in that: described in contain damping resistance R'sCircuit is: damping resistance R connected with remaining inductance L R, and in parallel with turn-to-turn inductance L after series connection, after parallel connectionThe circuit parallel connection of circuit after connecting with turn-to-turn gap g and turn-to-turn gap discharge arc road resistance r.
4. damping bus according to claim 2, is characterized in that: described multiturn parallel connection comprises: 2Circle parallel connection, 3 circle parallel connections, 4 circles parallel connection or 5 circle parallel connections.
5. damping bus according to claim 2, is characterized in that: described damping resistance is arranged on resistanceIn the middle of Buddhist nun's bus contact tube, improve the mechanical strength of damping bus, reduce the remaining inductance of damping resistance.
6. damping bus according to claim 1, is characterized in that: the helix tube of described damping busThe damping resistance of turn-to-turn parallel connection is cascaded, and damping resistance is by inserts or a spring section and helix tube electricityGas connects.
7. damping bus according to claim 3, is characterized in that: the resistance of described damping resistance RSize can regulate.
8. damping bus according to claim 3, is characterized in that: the number of turn of described remaining inductance L RTo square being directly proportional of induction reactance.
9. damping bus according to claim 6, is characterized in that: the middle part of damping bus helix tubeResistor rod is installed.
10. damping bus according to claim 9, is characterized in that: described resistor rod is along helix tubeAxial direction be arranged on the inside of helix tube, resistor rod and helix tube use electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520657139.3U CN205264354U (en) | 2015-08-27 | 2015-08-27 | Spiral tubular damping generating line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520657139.3U CN205264354U (en) | 2015-08-27 | 2015-08-27 | Spiral tubular damping generating line |
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| CN205264354U true CN205264354U (en) | 2016-05-25 |
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| CN201520657139.3U Active CN205264354U (en) | 2015-08-27 | 2015-08-27 | Spiral tubular damping generating line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106934115A (en) * | 2017-02-21 | 2017-07-07 | 中国电力科学研究院 | A kind of method and system of the wideband model for setting up gas-insulated switchgear damping bus |
| CN107633990A (en) * | 2017-10-12 | 2018-01-26 | 深圳市创仕达电子有限公司 | A kind of slow device and method of electromagnetic wave traveling wave |
| CN115688661A (en) * | 2022-12-30 | 2023-02-03 | 华中科技大学 | Modeling method for full circuit parameters of spiral tube type damping bus for VFTO (very fast transient overvoltage) suppression |
-
2015
- 2015-08-27 CN CN201520657139.3U patent/CN205264354U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106934115A (en) * | 2017-02-21 | 2017-07-07 | 中国电力科学研究院 | A kind of method and system of the wideband model for setting up gas-insulated switchgear damping bus |
| CN107633990A (en) * | 2017-10-12 | 2018-01-26 | 深圳市创仕达电子有限公司 | A kind of slow device and method of electromagnetic wave traveling wave |
| CN107633990B (en) * | 2017-10-12 | 2023-09-29 | 深圳市创仕达电子有限公司 | Electromagnetic wave traveling wave stagnation equipment and method |
| CN115688661A (en) * | 2022-12-30 | 2023-02-03 | 华中科技大学 | Modeling method for full circuit parameters of spiral tube type damping bus for VFTO (very fast transient overvoltage) suppression |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20170125 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee after: China Electric Power Research Institute Patentee after: State Grid Corporation of China Patentee after: Taikai Mutual Inductor Co., Ltd., Shandong Patentee after: STATE GRID SHANXI ELECTRIC POWER CO., LTD. Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute Patentee before: State Grid Corporation of China Patentee before: Taikai Mutual Inductor Co., Ltd., Shandong |