CN201332275Y - Variable voltage reactor of 500kV and uhv transmission lines - Google Patents
Variable voltage reactor of 500kV and uhv transmission lines Download PDFInfo
- Publication number
- CN201332275Y CN201332275Y CNU2008201999677U CN200820199967U CN201332275Y CN 201332275 Y CN201332275 Y CN 201332275Y CN U2008201999677 U CNU2008201999677 U CN U2008201999677U CN 200820199967 U CN200820199967 U CN 200820199967U CN 201332275 Y CN201332275 Y CN 201332275Y
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- CN
- China
- Prior art keywords
- reactor
- transformer
- isolating switch
- line
- voltage
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- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1828—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepwise control, the possibility of switching in or out the entire compensating arrangement not being considered as stepwise control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The utility model relates to a line variable voltage reactor of 500kV and uhv transmission lines, wherein a high-voltage bus is connected with a 500kV line, the line is connected with a line side isolating switch, a line breaker and a line side isolating switch in series, the 500kV line is connected with a transformer high voltage side isolating switch, the other end is connected with a transformer, the transformer is connected with a low current reactor, a low voltage winding of the transformer is connected with the a transformer isolating switch, the other end is connected with a low-voltage bus, and the low-voltage bus is connected with a reactor group. Various branches are all equipped with a reactor isolating switch, various branch reactor isolating switches are all connected with branch reactor breakers in series, the other end is connected with the branch reactor isolating switch, a branch reactor is connected with the isolating switch, and the branch reactor is equipped with a branch reactor neutral point connecting end. The line variable voltage reactor of the 500kV and uhv transmission lines has simple structure, reasonable design, low making cost and saving electric energy, and can effectively solve the reactive excess problem which is produced by an ehv transmission line and the uhv transmission line.
Description
Technical field
The utility model relates to a kind of transformer/reactor, specifically is the circuit transformer/reactor of 500kV and extra high voltage line.
Background technology
Along with China's transferring electricity from the west to the east implementation, and the high speed development of power industry in recent years, particularly superhigh pressure and extra-high voltage grid construction development, large quantities of superhigh pressure that build up or building and ultra high voltage transmission and distribution network make the energy of western China be able to constantly carry to the eastern region.We know, superhigh pressure and extra-high voltage transmission line, because direct-to-ground capacitance can produce a large amount of capacitive reactive powers when operation, this just need install high voltage reactor abbreviation " high anti-" in the circuit both sides additional and compensate.Generally, for avoiding taking place resonance, high anti-" undercompensation " that the compensation of line charging power is adopted fixed capacity.Because this compensation way shortcoming flexibility and economy, and cause electrical network a large amount of idle surpluses under little mode.Therefore, the reactor that has occurred a kind of being called " controlled height is anti-" in recent years.The anti-high anti-many deficiencies of circuit that remedied of controlled height, but because it involves great expense, be anti-nearly 3 times of common height, so this technology can not get promoting always.The high-tension line transformer/reactor has not only comprised high anti-all advantages that resist with controlled height of circuit, and not only can play the undercompensation function, also can play the overcompensation function.It also has the reliability height, the advantage of flexible operation.Because the reactive power that the circuit transformer/reactor can be regulated its output according to the power factor of power transmission and transforming equipment, therefore, it can substantially play energy-saving and cost-reducing effect.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides the technical scheme of a kind of 500kV and extra high voltage line transformer/reactor, and the equipment of making by the utility model has that equipment is simple, energy conservation and consumption reduction effects significantly reaches characteristics such as cost of manufacture is low.
The technical scheme that its technical problem that solves the utility model adopts is: the high-tension line transformer/reactor, include isolating switch, circuit breaker, it is characterized in that: on high voltage bus, be connected with the 500kV circuit, on the 500kV circuit, be in series with the line side isolating switch, 500kV line-breaker and line side isolating switch, on the 500kV circuit, be connected with transformer high-voltage side isolating switch, the end in addition of transformer high-voltage side isolating switch connects with the 500kV transformer, on 500kV transformer high-voltage winding neutral point, be connected with neutral point the little electric current reactor that carries variable tap is arranged, have to carry on the little electric current reactor of variable tap at neutral point and be provided with earth terminal, the low pressure winding of 500kV transformer is connected with 35kV transformer isolation switch, 35kV transformer isolation switch end in addition connects with the 35kV low-voltage bus bar, on the 35kV low-voltage bus bar, be connected with 35kV reactor group, 35kV reactor group is made up of a plurality of branches, each branch includes a 35kV branch road reactor isolating switch, all be in series with a 35kV branch road reactor circuit breaker on each 35kV branch road reactor isolating switch, 35kV branch road reactor circuit breaker end in addition is connected with 35kV branch road reactor isolating switch, 35kV branch road reactor and 35kV branch road reactor isolating switch link, and 35kV branch road reactor is provided with 35kV branch road reactor neutral point link.
Described 35kV low-voltage bus bar voltage is 35kV and following electric pressure.Described high voltage bus and high-tension line voltage are 500kV and above electric pressure.
Described 35kV reactor group is made up of at least two 35kV branch reactors.
Described high-tension line transformer/reactor (16) is provided with relaying protection and automatic control system.
The utility model is to invent for the idle superfluous problem of reactive power compensation that solves 500kV supertension line and extra high voltage line and generation.The utility model is to utilize 500kV to become the transformer of 35kV, and the reactive power of 35kV side low tension reactor group is sent to the 500kV high-pressure side.Can utilize simultaneously the little reactor ground connection of variable tap of carrying that has of transformer neutral point, come compensated line because the secondary arc current that single-pole reclosing causes.Behind the secondary arc current that has compensated superhigh pressure or extra high voltage line, system's reactive power and voltage according to 500kV circuit transformer/reactor mounting points, the switching of the low tension reactor group by control system control 35kV side makes the reactive power compensation degree of supertension line carry out controllable compensating from the undercompensation to the overcompensation.Undercompensation does not produce overvoltage with circuit or system side bus end and exceeds, overcompensation is exceeded with maximum installed capacity and system's minimum operation voltage of low tension reactor, and avoid the resonance point of circuit, thereby can make the transformer of circuit, generator and a change group of sending end, and the step-down transformer of receiving end is in real time under the High Power Factor operating mode and moves, to reach energy saving purposes, this is one of its topmost advantage.Equally only need an isolation switch to connect in the line side because 500kV circuit transformer/reactor and 500kV be high to be resisted, another low pressure isolating switch is connected in 35kV low-voltage bus bar side.Therefore it does not need 500kV circuit breaker and 35kV low-pressure side circuit breaker, this be it advantage two.Three of advantage is 500kV transformers, the 35kV circuit breaker, and it is high anti-that the manufacture level of 35kV reactor and operational reliability statistics all are better than 500kV.Four of advantage, 500kV circuit transformer/reactor has increased the regulating measure to power system reactive power and voltage.Five of advantage, the cost of 500kV circuit transformer/reactor is anti-far below the controlled height of 500kV circuit.
The utlity model has simple in structure, reasonable in design, cost of manufacture is lower, can effectively solve the idle superfluous problem that 500kV supertension line and extra high voltage line produce, characteristics such as saves energy.
Description of drawings
Fig. 1 the utility model electrical schematic diagram.
Among the figure: (1) is the line side isolating switch, (2) be the 500kV line-breaker, (3) be the line side isolating switch, (4) be the 500kV circuit, (5) be 500kV side transformer high voltage isolator, (6) for neutral point the little electric current reactor of the variable tap earth terminal of carrying is arranged, (7) be the little electric current reactor of neutral point, (8) be the 35kV low-voltage bus bar, (9) be 35kV branch road reactor isolating switch, (10) are 35kV reactor group, and (11) are 35kV branch road reactor, (12) be 35kV branch road reactor neutral point link, (13) be 35kV branch road reactor isolating switch, (14) are 35kV branch road reactor circuit breaker, and (15) are 35kV transformer isolation switch, (16) be the 500kV transformer, (17) 500kV high voltage bus.
In the frame of broken lines is 500kV and extra high voltage line transformer/reactor.
Embodiment
On 500kV high voltage bus (17), be connected with 500kV circuit (4), on the 500kV circuit, be in series with line side isolating switch (1), 500kV line-breaker (2) and line side isolating switch (3), on the 500kV circuit, be connected with 500kV transformer high-voltage side isolating switch (5), the end in addition of transformer isolation switch connects with 500kV transformer (16), on 500kV transformer high-voltage winding neutral point, be connected with neutral point the little electric current reactor of variable tap (7) of carrying is arranged, have to carry on the little electric current reactor of variable tap at neutral point and be provided with earth terminal (6), the low pressure winding of 500kV transformer is connected with transformer 35kV side isolating switch (15), transformer 35kV side isolating switch end in addition connects with 35kV low-voltage bus bar (8), on the 35kV low-voltage bus bar, be connected with 35kV reactor group (10), 35kV reactor group can be established a plurality of branches as required, each branch is by a 35kV branch road reactor isolating switch (9), all be in series with a 35kV branch road reactor circuit breaker (14) on the 35kV branch road reactor isolating switch (9), 35kV branch road reactor circuit breaker end in addition is connected with 35kV branch road reactor isolating switch (13), 35kV branch road reactor (11) links with 35kV branch road reactor isolating switch (13), and 35kV branch road reactor (11) is provided with 35kV branch road reactor neutral point link (12).Wherein be provided with relaying protection and automatic control system in the high-tension line transformer/reactor, wherein relaying protection and automatic control system are general prior art.35kV low-voltage bus bar described in the utility model (8) voltage is 35kV and following electric pressure.High voltage bus described in the utility model (17) and high-tension line voltage include 500kV and above electric pressure.High-tension line transformer/reactor of the present utility model (16) is provided with relaying protection and automatic control system, and relaying protection and automatic control system are prior art.
Claims (5)
1,500kV and extra high voltage line transformer/reactor, include isolating switch, circuit breaker, it is characterized in that: on high voltage bus (17), be connected with 500kV circuit (4), on the 500kV circuit, be in series with line side isolating switch (1), 500kV line-breaker (2) and line side isolating switch (3), on the 500kV circuit, be connected with transformer high-voltage side isolating switch (5), the end in addition of transformer high-voltage side isolating switch connects with 500kV transformer (16), on 500kV transformer high-voltage winding neutral point, be connected with neutral point the little electric current reactor (7) that carries variable tap is arranged, have to carry on the little electric current reactor of variable tap at neutral point and be provided with earth terminal (6), the low pressure winding of 500kV transformer is connected with 35kV transformer isolation switch (15), 35kV transformer isolation switch end in addition connects with 35kV low-voltage bus bar (8), on the 35kV low-voltage bus bar, be connected with 35kV reactor group (10), 35kV reactor group is made up of a plurality of branches, each branch includes a 35kV branch road reactor isolating switch (9), all be in series with a 35kV branch road reactor circuit breaker (14) on each 35kV branch road reactor isolating switch (9), 35kV branch road reactor circuit breaker end in addition is connected with 35kV branch road reactor isolating switch (13), 35kV branch road reactor (11) links with 35kV branch road reactor isolating switch (13), and 35kV branch road reactor (11) is provided with 35kV branch road reactor neutral point link (12).
2,500kV according to claim 1 and extra high voltage line transformer/reactor is characterized in that, described 35kV low-voltage bus bar (8) voltage is 35kV and following electric pressure.
3,500kV according to claim 1 and extra high voltage line transformer/reactor is characterized in that, described high voltage bus (17) and high-tension line voltage are 500kV and above electric pressure.
4,500kV according to claim 1 and extra high voltage line transformer/reactor is characterized in that, 35kV reactor group is made up of at least two 35kV branch reactors.
5,500kV according to claim 1 and extra high voltage line transformer/reactor is characterized in that, high-tension line transformer/reactor (16) is provided with relaying protection and automatic control system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201999677U CN201332275Y (en) | 2008-11-10 | 2008-11-10 | Variable voltage reactor of 500kV and uhv transmission lines |
| PCT/CN2009/074477 WO2010051727A1 (en) | 2008-11-10 | 2009-10-16 | Adjustable voltage reactor device on 500kv and extra-high-voltage line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201999677U CN201332275Y (en) | 2008-11-10 | 2008-11-10 | Variable voltage reactor of 500kV and uhv transmission lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201332275Y true CN201332275Y (en) | 2009-10-21 |
Family
ID=41225659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201999677U Expired - Fee Related CN201332275Y (en) | 2008-11-10 | 2008-11-10 | Variable voltage reactor of 500kV and uhv transmission lines |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201332275Y (en) |
| WO (1) | WO2010051727A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074944A (en) * | 2011-01-25 | 2011-05-25 | 华北电网有限公司唐山供电公司 | Method and device for preventing damage to 220kV transformer subjected to short circuit impact |
| CN102361239A (en) * | 2011-06-17 | 2012-02-22 | 四川电力科学研究院 | Mechanism for non-interrupting power of medium-voltage side of main transformer during repair |
| CN102969721A (en) * | 2012-11-02 | 2013-03-13 | 广东电网公司电网规划研究中心 | Parallel perceptual reactive compensation method for inhibiting steady over-voltages of power distribution networks containing small hydropower |
| WO2014127664A1 (en) * | 2013-02-25 | 2014-08-28 | 国家电网公司 | Controllable phase shifter for extra/ultra high voltage line and operating method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214926A (en) * | 2011-05-04 | 2011-10-12 | 上海艾能电力工程有限公司 | Energy-saving alternating current power system |
| CN108092282A (en) * | 2018-01-02 | 2018-05-29 | 日新电机（无锡）有限公司 | Integrated compact type high-voltage shunt reactor complexes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10304566A (en) * | 1997-04-25 | 1998-11-13 | Hitachi Ltd | Power facility having three-winding transformer of different transformation ratios |
| CN2488215Y (en) * | 2001-03-28 | 2002-04-24 | 西南交通大学 | Reactive compensator |
| CN100413206C (en) * | 2005-09-09 | 2008-08-20 | 西安西电变压器有限责任公司 | AC step controlled parallel reactor device |
| CN100533905C (en) * | 2007-11-16 | 2009-08-26 | 福建工程学院 | Method for preventing high tension power line single phase coinciding with permanent fault |
-
2008
- 2008-11-10 CN CNU2008201999677U patent/CN201332275Y/en not_active Expired - Fee Related
-
2009
- 2009-10-16 WO PCT/CN2009/074477 patent/WO2010051727A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074944A (en) * | 2011-01-25 | 2011-05-25 | 华北电网有限公司唐山供电公司 | Method and device for preventing damage to 220kV transformer subjected to short circuit impact |
| CN102361239A (en) * | 2011-06-17 | 2012-02-22 | 四川电力科学研究院 | Mechanism for non-interrupting power of medium-voltage side of main transformer during repair |
| CN102969721A (en) * | 2012-11-02 | 2013-03-13 | 广东电网公司电网规划研究中心 | Parallel perceptual reactive compensation method for inhibiting steady over-voltages of power distribution networks containing small hydropower |
| WO2014127664A1 (en) * | 2013-02-25 | 2014-08-28 | 国家电网公司 | Controllable phase shifter for extra/ultra high voltage line and operating method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010051727A1 (en) | 2010-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |