CN103825288B - A kind of ultra-high/extra-high voltage split-phase switching type shunt reactor and gear control method thereof - Google Patents
A kind of ultra-high/extra-high voltage split-phase switching type shunt reactor and gear control method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of power system ultra-high/extra-high voltage technology, be specifically related to a kind of small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type shunt reactor and gear control method thereof.Ultra-high/extra-high voltage split-phase switching type shunt reactor includes A, B, C three-phase windings, A, B, C threephase switch and small reactor on neutral point；A phase winding switchs with A phase, B phase winding switchs with B phase and C phase winding switchs with C phase after series connection respectively that A, B, C three-phase windings is star-like is connected, and the transmission line of electricity neutral point after star-like connection passes through small reactor on neutral point device ground connection；Small reactor on neutral point device includes N number of tap, its reactance values stepping position scalable.The present invention solve the installing that do not replaces on ultra-high/extra-high voltage transmission line of electricity symmetrical high anti-time may cause the technical problem such as single phase autoreclosing failure, line-to-ground switch type selecting difficulty, thus it is effectively improved single phase autoreclosing success rate, be conducive to selecting common-tower double-return or the earthed switch of the most single time construction of line.
Description
Technical field
The present invention relates to a kind of power system ultra-high/extra-high voltage technology, be specifically related to a kind of ultra-high/extra-high voltage split-phase switching type also
Connection reactor and gear control method thereof.
Background technology
In ultra-high/extra-high voltage electrical network, by install on transmission line of electricity the symmetry equivalent shunt reactor of three compatible amount (with
Lower the most symmetrical high anti-), compensate a large amount of capacitive powers that transmission line of electricity produces, and the power-frequency overvoltage of suppression system.
For the ultra-high/extra-high voltage transmission line of electricity not replaced, owing to transmission line of electricity electric pressure is higher, and the electricity of three-phase line
Hold parameter and inductance parameters uneven, the ultra-high/extra-high voltage transmission line of electricity not replaced is installed symmetrical high anti-time, transmission of electricity can be caused
Secondary arc current during circuit generation singlephase earth fault and recovery voltage gradient level are higher so that the latent of fault point supplies electric arc
Can not extinguish rapidly, thus cause single phase autoreclosing failure, affect the safe and reliable operation of ultra-high/extra-high voltage electrical network.With
Time, when the ultra-high/extra-high voltage transmission line of electricity open-phase operation not replaced, if it occur that system resonance, can be long on primary equipment
The highest raw resonance overvoltage, thus threaten the safe operation of primary equipment.
In the ultra-high-tension power transmission line of distance, for reducing line parameter circuit value degree of unbalancedness, when the construction of line typically to defeated
Electric line replaces.For compensating capacitive reactive power and the suppression system power-frequency overvoltage of long distance transmission line, generally exist in meeting
Symmetrical height is installed anti-on transmission line of electricity, and access low reactance carrys out limiting circuitry generation single-phase earthing in symmetrical high anti-neutral point
Secondary arc current during fault.
In actual short distance ultra-high/extra-high voltage power transmission engineering, transmission line of electricity was set up by passage way and week
The geographical environment that encloses limits, if replaced transmission line of electricity, then has that transposition tower design difficulty is big, construction costs is high asks
Topic.Therefore, just have and set up short distance and do not replace the necessity of ultra-high/extra-high voltage transmission line of electricity.
But, the ultra-high/extra-high voltage transmission line of electricity not replaced is installed symmetrical high anti-, there is secondary arc current power supply big, latent
Arc is difficult to the problem extinguished, thus causes single phase autoreclosing failure；Common-tower double-return erection or the most single time are set up
Circuit, there is also the problem that electrostatic coupling voltage is high, earthed switch type selecting is difficult.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of ultra-high/extra-high voltage split-phase switching type parallel reactance
Device and gear control method thereof, the present invention solve the installing that do not replaces on ultra-high/extra-high voltage transmission line of electricity symmetrical high anti-time may lead
Cause the technical problem such as single phase autoreclosing failure, line-to-ground switch type selecting difficulty, thus be effectively improved single-phase automatic reclosing
Lock success rate, is conducive to selecting common-tower double-return or the earthed switch of the most single time construction of line.
It is an object of the invention to use following technical proposals to realize:
The present invention provides a kind of ultra-high/extra-high voltage split-phase switching type shunt reactor, and it thes improvement is that, described super/special
High pressure split-phase switching type shunt reactor is small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type shunt reactor, bag
Include A, B, C three-phase windings, A, B, C threephase switch and small reactor on neutral point；A phase winding and A phase switch, B phase winding switchs with B phase
And C phase winding switchs with C phase after series connection respectively that A, B, C three-phase windings is star-like is connected, the transmission line of electricity after star-like connection is neutral
Point is by small reactor on neutral point device ground connection；
Described small reactor on neutral point device includes N number of tap, its reactance values stepping position scalable.
The present invention also provides for the gear control method of a kind of ultra-high/extra-high voltage split-phase switching type shunt reactor, and it improves it
Place is, described method carries out gear regulation according to transmission line malfunction type centering point small reactor；Described transmission line of electricity
Fault type includes ultra-high/extra-high voltage power transmission line roadside phase line generation singlephase earth fault, the common-tower double-return or parallel not replaced
A loop line road fault of stop of the ultra-high/extra-high voltage transmission line of electricity that do not replaces, transmission line of electricity difference phase line that single time sets up occur single
Phase earth fault and the ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault not replaced.
Further, when there is the ultra-high/extra-high voltage power transmission line roadside phase line generation singlephase earth fault not replaced,
In ultra-high/extra-high voltage shunt reactor, A phase switchs, B phase switchs the operation strategy switched with C phase and is:
Guan Bi fault phase limit phase and the switch of mesophase circuit, open the switch of healthy phases limit phase line；Work as power transmission line
During the mesophase circuit generation singlephase earth fault of road, A phase switchs, B phase switchs to switch with C phase and all closes；
When A, C phase line is limit phase, and B phase line is mesophase, then, when A phase line generation singlephase earth fault, A phase is opened
Closing and switch Guan Bi with B phase, C phase switchs to be opened；When C phase line generation singlephase earth fault, B phase switchs and switchs Guan Bi with C phase,
A phase switchs to be opened；When B phase line generation singlephase earth fault, A phase switchs, B phase switchs to switch with C phase and all closes.
Further, when one time of the ultra-high/extra-high voltage transmission line of electricity that do not replaces that common-tower double-return or the most single time erection occur
During line outage, in the ultra-high/extra-high voltage shunt reactor of stoppage in transit circuit, A phase switchs, B phase switchs the operation strategy switched with C phase
It is: A phase switchs, B phase switchs to switch with C phase and all opens.
Further, when occur transmission line of electricity difference phase line generation singlephase earth fault time, small reactor on neutral point according to
Line fault is separate selects corresponding gear, comprises the steps:
Step 1: according to the capacitance parameter of transmission line of electricity, determines ultra-high/extra-high voltage split-phase switching type shunt reactor compensativity
And the impedance value of winding；
Step 2: according to ultra-high/extra-high voltage split-phase switching type shunt reactor compensativity and the impedance value of winding, in design
The regulation stall of property point small reactor, the impedance of small reactor on neutral point be ultra-high/extra-high voltage shunt reactor winding impedance 0.2～
0.5 times；
Step 3: choose the original speed position of small reactor on neutral point；
Step 4: set up ultra-high/extra-high voltage split-phase switching type shunt reactor, not transposed transmission line, power supply forms system
Complete electromagnetic transient simulation model；
Step 5: the electromagnetic transient simulation carrying out different phase line earth fault calculates, and divides including A phase, B phase and C phase line
Not Fa Sheng singlephase earth fault time electromagnetic transient simulation calculate, this simulation calculation is carried out in time domain；
Step 6: according to electromagnetic transient simulation result of calculation, judges A phase, B phase and the event of C phase line generation single-phase earthing respectively
Whether secondary arc current during barrier is minimum: if secondary arc current is not minimum, then adjusts the gear of small reactor on neutral point, repeats to hold
Row step 5, until secondary arc current is minimum；
Step 7: minimum latent power supply when 6 times transmission line of electricity A phases of recording step, B phase and C phase occur singlephase earth fault respectively
The small reactor on neutral point numerical value that stream is corresponding；
Step 8: form the gear adjustable strategies of small reactor on neutral point.
Further, when there is the ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault not replaced, it is judged that fault wire
Road separate, the operation strategy switched with C phase according to ultra-high/extra-high voltage split-phase switching type shunt reactor A phase, B phase and neutral point
The gear adjustable strategies of low reactance, the switch of operation ultra-high/extra-high voltage split-phase switching type shunt reactor correspondence phase, and select neutrality
The point corresponding gear of small reactor.
Compared with the prior art, the present invention reaches to provide the benefit that:
The ultra-high/extra-high voltage split-phase switching type shunt reactor of present invention offer and gear control method thereof, solve do not changing
On the ultra-high/extra-high voltage transmission line of electricity of position installing symmetrical high anti-time may cause single phase autoreclosing failure, line-to-ground switch choosing
The technical problems such as type difficulty, thus it is effectively improved single phase autoreclosing success rate, be conducive to selecting common-tower double-return or single parallel
Return the earthed switch of the construction of line, particularly as follows:
1, the small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type shunt reactor (letter below that the present invention provides
It is referred to as split-phase switching type height to resist) and gear control method, the mode of connection and switching manipulation strategy are simply, small reactor on neutral point
Gear adjustable strategies pre-establishes, and implements easily.
2, the split-phase switching type height that the present invention provides resists and is applicable to different construction of line modes, including not replacing single time
Transmission line of electricity, the same tower double back transmission line that do not replaces, do not replace parallel single back transmission line, it is possible to adapts to transmission line of electricity not homophase
Other earth fault, advantageously reduces the secondary arc current of the ultra-high/extra-high voltage transmission line of electricity that do not replaces, improves single-pole reclosing condition,
Improve the success rate of single-pole reclosing.
3, for the transmission line of electricity of do not replace common-tower double-return or the most single time erection, when a line outage, this
The anti-electrostatic coupling voltage that can reduce stoppage in transit circuit of the split-phase switching type height that invention proposes, is conducive to selecting earthed switch.
Accompanying drawing explanation
Fig. 1 is the group of the small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type shunt reactor that the present invention provides
Become and connection type figure；
Fig. 2 is that the gear regulation strategy of the small reactor on neutral point that the present invention provides forms flow chart；
Fig. 3 is the split-phase switching type that the small reactor on neutral point of the specific embodiment that the present invention provides contains five regulation stalls
High anti-composition and connection type figure；
Fig. 4 is that the transmission line of electricity A phase that the present invention provides occurs singlephase earth fault time-division congenial cut type height anti-and neutral point
Low reactance operation strategy figure；
Fig. 5 is that the transmission line of electricity B phase that the present invention provides occurs singlephase earth fault time-division congenial cut type height anti-and neutral point
Low reactance operation strategy figure；
Fig. 6 is that the transmission line of electricity C phase that the present invention provides occurs singlephase earth fault time-division congenial cut type height anti-and neutral point
Low reactance operation strategy figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
The present invention provides a kind of small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type shunt reactor, to solve
The installing that do not replaces on ultra-high/extra-high voltage transmission line of electricity symmetrical high anti-time may cause single phase autoreclosing failure, line-to-ground
The technical problems such as switch type selecting difficulty, thus are effectively improved single phase autoreclosing success rate, be conducive to selecting common-tower double-return or
The earthed switch of the most single time construction of line.
The composition of small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type shunt reactor and connection type figure such as figure
Shown in 1, by A phase winding, B phase winding, C phase winding, A switch, B phase switchs, C phase switchs and small reactor on neutral point forms.Wherein,
Every phase winding is connected with often switching mutually, the star-like connection of three-phase windings, and its neutral point passes through low reactance ground connection；Small reactor on neutral point bag
Containing some taps so that its reactance values stepping position scalable.
Threephase switch and the link position of three-phase windings that the split-phase switching type height that the present invention provides is anti-can change, or
Threephase switch is connected with transmission line of electricity, or three-phase windings is connected with transmission line of electricity.Threephase switch be not limited to chopper and every
Leave pass, it is also possible to otherwise should realize switching function (such as power electronic devices).
The present invention also provides for the gear control method of a kind of ultra-high/extra-high voltage split-phase switching type shunt reactor, described method
Gear regulation is carried out according to transmission line malfunction type centering point small reactor；Described transmission line malfunction type includes not changing
What the ultra-high/extra-high voltage power transmission line roadside phase line generation singlephase earth fault of position, common-tower double-return or the most single time set up does not replaces
One loop line road fault of stop of ultra-high/extra-high voltage transmission line of electricity, transmission line of electricity difference phase line generation singlephase earth fault and do not change
The ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault of position.
(1) when there is the ultra-high/extra-high voltage power transmission line roadside phase line generation singlephase earth fault not replaced, split-phase switching
The operation strategy that the high anti-A phase of type, B phase switch with C phase is: Guan Bi fault phase limit phase and the switch of mesophase circuit, and opens non-
The switch of fault phase limit phase line；When transmission line of electricity mesophase circuit generation singlephase earth fault, threephase switch all closes.Lift
For example, it is assumed that A, C phase line is limit phase, B phase line is mesophase, then when A phase line generation singlephase earth fault, and A phase
Switch switchs Guan Bi with B phase, and C phase switchs and opens；When C phase line generation singlephase earth fault, B phase switchs and switchs with C phase
Guan Bi, and A phase switchs and opens；When B phase line generation singlephase earth fault, A phase switchs, B phase switchs to switch with C phase and all closes
Close.
(2) stop when a loop line road of the ultra-high/extra-high voltage transmission line of electricity that do not replaces that common-tower double-return or the most single time erection occur
During fortune, the operation strategy that the high anti-A phase of the split-phase switching type of stoppage in transit circuit, B phase switch with C phase is: A phase, B phase switch all with C phase
Open.
(3) when there is transmission line of electricity difference phase line generation singlephase earth fault, small reactor on neutral point should be according to circuit
Fault is separate selects corresponding gear, and the gear regulation strategy of small reactor on neutral point forms flow process as in figure 2 it is shown, mainly include
Following steps:
Step 1: according to the capacitance parameter of transmission line of electricity, determines high anti-compensativity and the impedance value of high anti-winding；
Step 2: according to high anti-compensativity and the impedance value of high anti-winding, design the regulation stall of small reactor on neutral point,
The impedance of small reactor on neutral point is generally 0.2～0.5 times of high anti-winding impedance；
Step 3: choose the original speed position of small reactor on neutral point；
Step 4: set up that split-phase switching type height is anti-, transposed transmission line, the complete electro-magnetic transient of power supply composition system are not imitated
True mode；
Step 5: the electromagnetic transient simulation carrying out different phase line earth fault calculates, and divides including A phase, B phase and C phase line
Not Fa Sheng singlephase earth fault time electromagnetic transient simulation calculate, this simulation calculation is carried out in time domain；
Step 6: according to electromagnetic transient simulation result of calculation, judges A phase, B phase and the event of C phase line generation single-phase earthing respectively
Whether secondary arc current during barrier is minimum: if secondary arc current is not minimum, then adjusts the gear of small reactor on neutral point, repeats to hold
Row step 5, until secondary arc current is minimum.
Step 7: minimum latent power supply when 6 times transmission line of electricity A phases of recording step, B phase and C phase occur singlephase earth fault respectively
The small reactor on neutral point numerical value that stream is corresponding；
Step 8: form the gear adjustable strategies of small reactor on neutral point.
(4) when there is the ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault not replaced, it is judged that the phase of faulty line
Not, according to the high anti-A phase of split-phase switching type, operation strategy that B phase switchs with C phase and the gear adjustable strategies of small reactor on neutral point,
The switch of the high anti-correspondence of operation split-phase switching type, and select the corresponding gear of small reactor on neutral point.
It addition, the gear regulative mode of the anti-small reactor on neutral point of split-phase switching type height is not limited to machinery adjustment mode,
The gear of small reactor on neutral point otherwise can also be regulated (such as power electronic devices).
Embodiment
Below in conjunction with specific embodiment, further illustrate technical scheme.
The rated voltage that split-phase switching type height in embodiment resists is 1000kV, and rated capacity is 420MVar, and neutral point is little
Reactance comprises five gear-adjustables, 1 grade, 2 grades, 3 grades, 4 grades of small reactor on neutral point impedances corresponding with 5 grades be respectively 600 Ω,
800 Ω, 1000 Ω, 1200 Ω, 1400 Ω, its connection type is as shown in Figure 3.The ultra-high voltage AC transmission that do not replaces in embodiment
Line length is 100km, A phase and C phase place limit phase line, and B phase is mesophase circuit, and line pitch is 22.2m, limit phase line pair
Ground antenna height is 38.5m, and mesophase line-to-ground antenna height is 41.8m.
When transmission line of electricity A phase occurs singlephase earth fault, the high anti-A phase of split-phase switching type switchs Guan Bi with B phase, and C phase
Switch is opened, and small reactor on neutral point chooses 3 grades, as shown in Figure 4；When transmission line of electricity B phase occurs singlephase earth fault, split-phase is thrown
Cut type high anti-A phase, B phase switch with C phase and all close, and small reactor on neutral point chooses 5 grades, as shown in Figure 5；When transmission line of electricity C phase is sent out
During raw singlephase earth fault, the high anti-B phase of split-phase switching type switchs Guan Bi with C phase, and A phase switchs and opens, and small reactor on neutral point selects
Take 1 grade, as shown in Figure 6.Table 1 gives transmission line of electricity conveying different capacity secondary arc current and extensive when there is singlephase earth fault
Complex voltage gradient virtual value.
Table 1 do not replace UHV transmission line installing symmetrical high anti-time secondary arc current (virtual value)
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit, to the greatest extent
The present invention has been described in detail by pipe with reference to above-described embodiment, and those of ordinary skill in the field are it is understood that still
The detailed description of the invention of the present invention can be modified or equivalent, and any without departing from spirit and scope of the invention
Amendment or equivalent, it all should be contained in the middle of scope of the presently claimed invention.
Claims (1)
1. the gear control method of a ultra-high/extra-high voltage split-phase switching type shunt reactor, it is characterised in that
Described ultra-high/extra-high voltage split-phase switching type shunt reactor is small reactor on neutral point adjustable ultra-high/extra-high voltage split-phase switching type
Shunt reactor, including A, B, C three-phase windings, A, B, C threephase switch and small reactor on neutral point；A phase winding and A phase switch, B phase
Winding switchs with B phase and C phase winding switchs with C phase after series connection respectively that A, B, C three-phase windings is star-like is connected, after star-like connection
Transmission line of electricity neutral point passes through small reactor on neutral point device ground connection；
Described small reactor on neutral point device includes N number of tap, its reactance values stepping position scalable；
Described method carries out gear regulation according to transmission line malfunction type centering point small reactor；Described transmission line malfunction
Type includes a loop line road fault of stop of the ultra-high/extra-high voltage transmission line of electricity that do not replaces that common-tower double-return or the most single time sets up, defeated
Electric line difference phase line generation singlephase earth fault and the ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault not replaced；
The described ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault not replaced includes the ultra-high/extra-high voltage power transmission line roadside do not replaced
Phase line generation singlephase earth fault；
When there is the ultra-high/extra-high voltage power transmission line roadside phase line singlephase earth fault not replaced, ultra-high/extra-high voltage shunt reactor
Middle A phase switchs, B phase switchs the operation strategy switched with C phase and is:
Guan Bi fault phase limit phase and the switch of mesophase circuit, open the switch of healthy phases limit phase line；When in transmission line of electricity
Between phase line generation singlephase earth fault time, A phase switchs, B phase switchs to switch with C phase and all closes；
When A, C phase line is limit phase, and B phase line is mesophase, then when A phase line generation singlephase earth fault, A phase switch and
B phase switchs Guan Bi, and C phase switchs to be opened；When C phase line generation singlephase earth fault, B phase switchs and switchs Guan Bi, A phase with C phase
Switch is opened；When B phase line generation singlephase earth fault, A phase switchs, B phase switchs to switch with C phase and all closes；
When there is a line outage of the ultra-high/extra-high voltage transmission line of electricity that do not replaces of common-tower double-return or the most single time erection, stop
In the ultra-high/extra-high voltage shunt reactor on transport line road, A phase switchs, B phase switchs the operation strategy switched with C phase and is: A phase switchs, B phase
Switch switchs with C phase and all opens；
When there is transmission line of electricity difference phase line singlephase earth fault, small reactor on neutral point selects according to line fault is separate
Corresponding gear, comprises the steps:
Step 1: according to the capacitance parameter of transmission line of electricity, determine ultra-high/extra-high voltage split-phase switching type shunt reactor compensativity and around
The impedance value of group；
Step 2: according to ultra-high/extra-high voltage split-phase switching type shunt reactor compensativity and the impedance value of winding, designs neutral point
The regulation stall of small reactor, the impedance of small reactor on neutral point is the 0.2～0.5 of ultra-high/extra-high voltage shunt reactor winding impedance
Times；
Step 3: choose the original speed position of small reactor on neutral point；
Step 4: set up ultra-high/extra-high voltage split-phase switching type shunt reactor, not transposed transmission line, power supply forms the complete of system
Electromagnetic transient simulation model；
Step 5: the electromagnetic transient simulation carrying out different phase line earth fault calculates, and sends out respectively including A phase, B phase and C phase line
Electromagnetic transient simulation during raw singlephase earth fault calculates, and this simulation calculation is carried out in time domain；
Step 6: according to electromagnetic transient simulation result of calculation, when judging A phase, B phase and C phase line generation singlephase earth fault respectively
Secondary arc current be whether minimum: if secondary arc current is not minimum, then adjusts the gear of small reactor on neutral point, repeat step
Rapid 5, until secondary arc current is minimum；
Step 7: minimum secondary arc current pair when 6 times transmission line of electricity A phases of recording step, B phase and C phase occur singlephase earth fault respectively
The small reactor on neutral point numerical value answered；
Step 8: form the gear adjustable strategies of small reactor on neutral point；
When there is the ultra-high/extra-high voltage transmission line of electricity generation singlephase earth fault not replaced, it is judged that faulty line separate, according to
The gear of ultra-high/extra-high voltage split-phase switching type shunt reactor A phase, the operation strategy that B phase switchs with C phase and small reactor on neutral point is adjusted
Whole strategy, the switch of operation ultra-high/extra-high voltage split-phase switching type shunt reactor correspondence phase, and select small reactor on neutral point device corresponding
Gear；
When transmission line of electricity A phase occurs singlephase earth fault, the high anti-A phase of split-phase switching type switchs Guan Bi with B phase, and C phase switchs
Opening, small reactor on neutral point chooses 3 grades；When there is singlephase earth fault in transmission line of electricity B phase, split-phase switching type high anti-A phase, B
Switching with C phase mutually and all close, small reactor on neutral point chooses 5 grades；When transmission line of electricity C phase occurs singlephase earth fault, split-phase is thrown
The high anti-B phase of cut type switchs Guan Bi with C phase, and A phase switchs and opens, and small reactor on neutral point chooses 1 grade.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2202369Y (en) * | 1994-05-03 | 1995-06-28 | 中国矿业大学 | Automatic tracking compensation arc suppression coil |
| JP5311373B2 (en) * | 2008-04-08 | 2013-10-09 | 東京電力株式会社 | Distribution line voltage adjustment method and apparatus |
| CN103474982A (en) * | 2013-09-29 | 2013-12-25 | 安徽一天电气技术有限公司 | Arc extinction device for eliminating interphase short circuit in single-resistance method |
-
2014
- 2014-03-18 CN CN201410101568.2A patent/CN103825288B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2202369Y (en) * | 1994-05-03 | 1995-06-28 | 中国矿业大学 | Automatic tracking compensation arc suppression coil |
| JP5311373B2 (en) * | 2008-04-08 | 2013-10-09 | 東京電力株式会社 | Distribution line voltage adjustment method and apparatus |
| CN103474982A (en) * | 2013-09-29 | 2013-12-25 | 安徽一天电气技术有限公司 | Arc extinction device for eliminating interphase short circuit in single-resistance method |
Non-Patent Citations (1)
| Title |
|---|
| 新型主从式消弧线圈的研究;李文锋;《华北电力大学硕士学位论文》;20040201;第18-19页，图3-4 * |
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