CN106300262A - A kind of 220kV grade transformer protection method for transformer station's remote power-feeding - Google Patents
A kind of 220kV grade transformer protection method for transformer station's remote power-feeding Download PDFInfo
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- CN106300262A CN106300262A CN201610739279.4A CN201610739279A CN106300262A CN 106300262 A CN106300262 A CN 106300262A CN 201610739279 A CN201610739279 A CN 201610739279A CN 106300262 A CN106300262 A CN 106300262A
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- protection
- transformer
- optical
- longitudinal difference
- transformator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
- H02H7/045—Differential protection of transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses the guard method of a kind of 220kV grade transformator for transformer station's remote power-feeding, using the short leg main protection of the distance high tension cable that 220kV optical-fiber longitudinal difference protection switchs as 220kV high voltage side of transformer to 220kV GIS, equipment for protecting optical fibre longitudinal difference infield is transforming plant protecting room, protection zone formation cross protection with transformer station's 220kV bus protection, transformer side arranges in-situ protection cell configuration 220kV optical-fiber longitudinal difference protection and coordinates each other with transformer substation side optical-fiber longitudinal difference protection as stub protection, transformer differential protection with the configuration of transformer side in-situ protection cell forms cross protection simultaneously.The present invention utilize " far jump " the functional realiey tranformer protection action in 220kV optical fiber differential protective after unsuccessful reason and trip protection, utilize " teletransmission " functional realiey tranformer protection action in 220kV optical fiber differential protective after press off lock to malfunctioning the demultiplexing of failure protection and realize the transfer trip of non-ionizing energy loss.
Description
Technical field
The present invention relates to a kind of 220kV grade transformer protection method for transformer station's remote power-feeding.
Background technology
Current transformer station or provincialism power plant, when facing expansion and heat supply, the steam supply additional demand of supply district,
Need to carry out putting into the new booster stations of new transformer station or power plant, and access standby unit and spare transformer to meet supply district
Expansion and heat supply, steam supply additional demand, simultaneously, it is also desirable to reserve grid-connected conditions for follow-up Construction of Unit.And by power transformation
Stand or the new booster stations of power plant place limit, transformer station or new power plant's booster stations be often arranged on certain distance newly
Point, often occur transformer station or power plant newly boost stop spacing from supply transformer too away from situation.
Transformer station or new power plant's booster stations distance supply transformer are too remote, can give the protection scheme design of supply transformer
Bring very burden, if following conventional lines protection scheme, it may be assumed that the high and low pressure side electric current of transformator, voltage circuit, breaker tripping and closing are returned
Road uses conventional secondary cable to connect, so can be because away from too far away, and the CT secondary cable distance of offside, load is big, causes
CT C-V characteristic is abnormal, causes CT capacity type selecting difficulty, thus causes the possible malfunction of differential protection, and secondary closing loop mistake
Length causes anti-supertension and thunder and lightning, electromagnetic interference difficulty, and secondary cable insulation exists hidden danger and the mistake conjunction thereby resulted in, false tripping
Risk.
Accordingly, it would be desirable to the tranformer protection scheme suitable to the transformator offer of remote power-feeding.
Summary of the invention
The present invention is to solve the problems referred to above, it is proposed that a kind of 220kV grade transformation for transformer station's remote power-feeding
The guard method of device, this method utilizes the communication optical fiber communication link as route protection of 220kV optical-fiber longitudinal difference protection, utilizes
Trip protection and unsuccessful reason after " far jumping " functional realiey tranformer protection action of 220kV optical-fiber longitudinal difference protection, utilize 220kV
After " teletransmission " functional realiey tranformer protection action in optical-fiber longitudinal difference protection give failure protection malfunctioning demultiplex press off lock and
Realize the transfer trip of non-ionizing energy loss, substitute the electric parameters transmission of conventional secondary cable.Avoid because away from too far away, offside
CT secondary cable distance, load is big, causes CT C-V characteristic abnormal, causes CT capacity type selecting difficulty, thus causes differential
Protection may malfunction, and secondary closing loop is long causes anti-supertension and thunder and lightning, electromagnetic interference difficulty, and secondary cable insulate
There is hidden danger and the mistake conjunction thereby resulted in, false tripping risk.
To achieve these goals, the present invention adopts the following technical scheme that
The guard method of a kind of 220kV grade transformator for transformer station's remote power-feeding, makees optical-fiber longitudinal difference protection
For the short leg main protection of the distance high tension cable that 220kV high voltage side of transformer to GIS switchs, equipment for protecting optical fibre longitudinal difference is pacified
Dress place is transforming plant protecting room, forms cross protection with the protection zone of substation bus bar protection, and transformer side arranges and protects on the spot
Protect cell configuration optical-fiber longitudinal difference protection coordinate each other with transformer substation side optical-fiber longitudinal difference protection as stub protection, while and transformation
Device differential protection forms cross protection.
Described transformer differential protection is in the range of high voltage side of transformer sleeve pipe and low-pressure side.Protection device infield is
Transformer side in-situ protection cell.
The remote function of jumping in optical-fiber longitudinal difference protection is utilized to carry out unsuccessful reason and trip protection height after tranformer protection action
Pressure side GIS switching manipulation.
Demultiplex to after utilizing the transporting function in optical-fiber longitudinal difference protection to realize tranformer protection action the malfunctioning of failure protection
Press off lock and realize the transfer trip high-pressure side GIS switch of non-ionizing energy loss.
For 220kV grade transformer configuration tranformer protection and the stub protection of transformer station's remote power-feeding, above-mentioned
Protection dual configuration configures.
For the 220kV grade transformator of transformer station's remote power-feeding, because the high pressure GIS switch of power supply is arranged on transformer station
Side, breaker fail protection scheme: transformer fault, tranformer protection action (without non-ionizing energy loss), tranformer protection is high
Transformer side optical-fiber longitudinal difference protection distant jump circuit is received in the tripping operation outlet of pressure side, and the tripping operation outlet high jump of offside optical-fiber longitudinal difference protection presses off
Closing, offside optical-fiber longitudinal difference protection is far jumped start failure protection outlet and is received bus differential protecting unsuccessful reason loop simultaneously.
During power transformer interior fault, tranformer protection releases malfunctioning pressing off again and lock out mouth access transformer side optical-fiber longitudinal difference guarantor
Protecting " teletransmission " loop, offside optical-fiber longitudinal difference protection teletransmission collection of letters outlet is received bus differential protecting malfunctioning the pressing off again of releasing and is locked back
Road.
During short leg fault, offside optical-fiber longitudinal difference protection action, export straight high jump and compress switch, it is poor that malfunctioning outlet accesses bus
Dynamic protection unsuccessful reason loop.
Transformer non-electricity protection act, connects non-ionizing energy loss (protection) through non-electricity protecting device protection exit
To second " teletransmission " loop of transformer side optical-fiber longitudinal difference protection, second " teletransmission " of offside (booster stations side) optical-fiber longitudinal difference protection is received
Letter outlet is directly connected to high pressure GIS control box and does not open malfunctioning TJF trip(ping) circuit.Reach non-ionizing energy loss to trip not start failure protection
The countermeasure of protection.
The invention have the benefit that
(1) present invention is the transformator distance booster stations bus distance of large-size thermal power plant or hydroelectric power plant and transformer station
Overlength, it may be assumed that the operating mode that power supply point is the most remote, it is provided that a kind of safe and reliable, the protection scheme being worthy to be popularized；
(2) present invention solves the 220kV grade transformator of transformer station's remote power-feeding and follows conventional lines the reality of protection scheme
Execute run into difficulty；Avoiding because away from too far away, the CT secondary cable distance of offside, load is big, causes CT volt-ampere special
Sexual abnormality, causes CT capacity type selecting difficulty, thus causes the possible malfunction of differential protection；Avoid closing loop long cause anti-
Supertension and thunder and lightning, electromagnetic interference difficulty, there is hidden danger and the mistake conjunction thereby resulted in, the risk of false tripping in secondary cable insulation；
(3) present invention utilizes the unique advantage that the communication optical fiber of optical fiber differential protective is had as communication link, special
It not to advantages such as electric field insulation, bandwidth and attenuation are low, utilize " far jumping " the functional realiey transformator in optical fiber differential protective
Unsuccessful reason and trip protection, " teletransmission " functional realiey tranformer protection action utilized in optical fiber differential protective after protection act
Malfunctioning the demultiplexing giving failure protection afterwards presses off lock and realizes the transfer trip of non-ionizing energy loss.
Accompanying drawing explanation
Fig. 1 is the power plant 220kV new booster stations electric main wiring diagram of embodiment；
Fig. 2 is power plant's GPF (General Protection False scheme schematic diagram of embodiment；
Fig. 3 is the schematic diagram of the protection scheme of the power plant use present invention of embodiment；
Fig. 4 is that the transformer side optical difference protection of the embodiment of the present invention is far jumped and teletransmission is opened into schematic diagram；
Fig. 5 is the 220kV booster stations protection room optical difference protection action outlet schematic diagram of the embodiment of the present invention.
Detailed description of the invention:
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
A power plant is provincialism power plant, and supply district is mainly A city.A power plant has 3 units at present, and capacity is 1 × 225+2
×670MW。
Issuing according to country's prevention and control of air pollution action plan in the recent period and fired power generating unit of keeping under strict control builds situation, A municipal government is bright
Really do not allow newly-built Thermal generation unit in region on principles of identifying；According to the heat supply ad hoc planning of new district reply, new district will be filled
Divide the heat capacity after utilizing A repowering, meet its heat supply, steam supply demand as the main force's thermal source in region.A power plant
Long-term planning is adjusted, and the #3 unit closed down in the original plan considers #3 unit is carried out comprehensive upgrading in the recent period, and maintains fortune
OK, to meet national energy-saving reduction of discharging and heat supply needs in region.
The #3 unit closed down for satisfied original plan accesses electrical network needs, and reserves grid-connected conditions for follow-up Construction of Unit,
Meet A utility grid safety and stability eventually to power needs.According to up-to-date power plant, power network development situation, newly-built 220kV new liter in A power plant
Pressure station, by high for the stand-by power supply #02 of power plant's #3, #5, #6 unit and all of 6 times 220kV outlets and #3 unit standby change, #5, #
The equipment such as the high standby change of the stand-by power supply #03 of 6 units are entered the new booster stations of 220kV by 220kV old booster stations reconfiguration.
As seen from Figure 1: #02 is high standby to be become, #03 high standby becomes, #1 comprehensively becomes and is 220kV grade transformator, and accesses 220kV
New booster stations bus.
Being limited by plant site, A power plant 220kV site of newly boosting is selected near 220kV circuit outlet portal frame, and #02
The standby change of height, the high standby change of #03, #1 comprehensively conjugate in old factory, the new booster stations of distance 220kV about 1.5 kilometers.
Therefore a series of problem is brought: standby become owing to #02 is high, 03 open standby change, the comprehensive displacement of #1 newly boosts from 220kV
Stand about 1.5 kilometers, bring very burden away from too far away to the protection scheme design of above main equipment, initially consider to follow conventional lines
Protection scheme, it may be assumed that the high and low pressure side electric current of transformator, voltage circuit, closing loop use conventional secondary cable to connect, because
Away from too far away, the CT secondary cable distance of offside, load is big, causes CT C-V characteristic abnormal, causes CT capacity type selecting difficulty,
Thus cause differential protection may malfunction, and secondary closing loop is long causes anti-supertension and thunder and lightning, electromagnetic interference difficulty,
There is hidden danger and the mistake conjunction thereby resulted in, false tripping risk in secondary cable insulation.
Open with #02 and standby become example and state.
As in figure 2 it is shown, utilize GPF (General Protection False scheme:
Relaying configuration is: 220kV tranformer protection forms cross protection with 220kV bus protection, by high voltage side of transformer
The scope of transformer differential protection included in by 1.5 kilometers of high tension cables to 220kV GIS switch.
Problem: because the CT secondary cable distance away from offside too far away, load is big, causes CT C-V characteristic abnormal, makes
Become CT capacity type selecting difficulty, thus cause differential protection may malfunction, and secondary closing loop long cause anti-supertension with
Thunder and lightning, electromagnetic interference difficulty, there is hidden danger and the mistake conjunction thereby resulted in, false tripping risk in secondary cable insulation.
Solution: open to 220kV GIS as high voltage side of transformer as it is shown on figure 3, increase 220kV optical-fiber longitudinal difference protection
The main protection of 1.5 kilometers of high tension cables between pass, substitutes conventional transformer differential protection as transformator and 1.5 kilometers of high pressure
The scheme of the main protection of cable, the scope of transformer differential protection is high voltage side of transformer sleeve pipe and low-pressure side.
Utilize unsuccessful reason and protection after " far jumping " the functional realiey tranformer protection action in 220kV optical-fiber longitudinal difference protection
Tripping operation, utilize after " teletransmission " functional realiey tranformer protection action in 220kV optical-fiber longitudinal difference protection to failure protection malfunctioning
Demultiplex and press off lock and realize the transfer trip of non-ionizing energy loss, substitute the electric parameters transmission of conventional secondary cable.
It is high as 220kV transformator that protection room, relaying configuration: 220kV new booster stations side increases 220kV optical-fiber longitudinal difference protection
The short leg main protection of 1.5 kilometers of high tension cables that pressure side switchs to 220kV GIS, with the protection zone shape of 220kV bus protection
Become cross protection.Transformer side arranges in-situ protection cell configuration 220kV optical-fiber longitudinal difference protection as stub protection and power transformation
Optical fiber of standing longitudinal difference protection coordinates each other, forms cross protection with transformer differential protection simultaneously.
Directly using fibre core communication due to optical fiber, eliminate other links, its anti-signal of telecommunication interference performance highlights, and fault is general
Rate is low, and optical-fibre channel to have connection simple and convenient, debug successfully later the most more stable, the most labile superiority, light
When fine Sustainable use optical-fibre channel carries out data exchange, not only exchange both sides current data, the most also alteration switch amount information, real
More existing miscellaneous functions, the most just include far jumping, transporting function.Preferably with southern auspicious relay protection PCS-931L optical fiber differential protective.
Protection device sampling obtains remote tripping when entering for high level, through processing and confirming, as switching value, together with electric current
(i.e. Cyclic Redundancy Check cyclic redundancy check (CRC), transmitting terminal mathematically produces for sampled data and CRC check code
Sending with information after information code bit after raw CRC code, receiving terminal also produces a CRC code by same method, by this
Two check codes compare, if it is errorless unanimously to turn out transmitted breath, if inconsistent meaning that has mistake, i.e. in transmission
Having made a byte difference, produced CRC code is also different) etc. be packaged as a complete frame information together, by digital channel,
Send offside protection device to.Offside device often receives a frame information, will extract far jump signal through CRC check, decoding,
And receive offside for the most continuous three times far to jump signal and just think that the remote signal of jumping received is reliable.When protection control word is adjusted
When controlling without local boot for remote jumping, then after receiving remote jumping signal, unconditional three-phase tripping operation exports, and start failure protection exports, and closes
Lock reclosing.When controlling through local boot into remote jumping when protecting control word to adjust, then this side device is needed to start just outlet.
PCS-931L is configured with and remote jumps 1, remote jump 2 transfer trips open into, and configure receipts and remote jump 1, remote jump 2 and output node.When
When the remote jumping 1 of receipts, remote jumping 2 meet exit condition, output node action accordingly.
Device configuration teletransmission 1, teletransmission 2, teletransmission 3 open ingress.As remote jumping, device is also by digital channel respectively
Transmit teletransmission 1, teletransmission 2, teletransmission 3.After difference is to receive offside remote transfer signal, the tripping operation not acting on this device goes out
Mouthful, and simply the most strictly according to the facts the ingress state of opening of offside device is reflected the outputing on node of correspondence.
Open standby change at #02 and near transformer body, build protective chamber, place tranformer protection cabinet, stub protection cabinet.
Stub protection selects PCS-931L optical difference protection, and protection dual configuration configures.
As shown in Figure 4, #02 opens and standby become new transformator, only booster stations side and have high pressure GIS switch, breaker failure guarantor
Protecting scheme: transformer fault, tranformer protection action (without non-ionizing energy loss), the tripping operation outlet of tranformer protection high-pressure side is received
Transformer side PCS-931L distant jump circuit, offside PCS-931L tripping operation outlet high jump compresses switch.Offside PCS-931L far jumps simultaneously
Bus differential protection unsuccessful reason loop is received in start failure protection outlet.
Power transformer interior fault, tranformer protection releases malfunctioning pressing off again and lock out mouth access transformer side PCS-931L teletransmission
Loop 1, offside PCS-931L teletransmission outlet 1 of collecting mail is received bus differential protection and is released and malfunctioning press off lock loop again.Short leg fault is right
Side PCS-931L optical difference protection action, exports straight high jump and compresses switch, and malfunctioning outlet accesses bus differential protection unsuccessful reason loop.
Power transformer interior fault, transformer non-electricity protection act, non electrical quantity (gas) protection is protected through non electrical quantity device
Protecting outlet and receive transformer side PCS-931L teletransmission loop 2, offside (booster stations side) PCS-931L teletransmission collection of letters outlet 2 directly connects
Malfunctioning TJF trip(ping) circuit is not opened to high pressure GIS control box.Reach trip counter the arranging of not actuating breaker failure protection of non-ionizing energy loss to want
Ask.
As it is shown in figure 5, #02 opens for uprising low-pressure side tripping operation outlet mode: tranformer protection action (is protected without non electrical quantity
Protect) high-pressure side tripping operation outlet receive transformator PCS-931L distant jump circuit, offside (booster stations side) PCS-931L far jump out mouth jump
High-voltage switch gear.The tripping operation outlet of tranformer protection action low-pressure side is directly connected to low-pressure side related switch trip(ping) circuit.Transformer side
Low-pressure side related switch trip(ping) circuit is received in PCS-931L optical difference protection action outlet.Offside PCS-931L (booster stations side) equation of light
Protection act exports straight TRIP, and malfunctioning outlet accesses bus differential protection unsuccessful reason loop.
Utilize the unique advantage that 220kV optical fiber differential protective is had as the communication link of route protection, the most right
The advantages such as electric field insulation, bandwidth and attenuation are low, utilize " far jumping " the functional realiey transformator in 220kV optical fiber differential protective to protect
Unsuccessful reason and trip protection, " teletransmission " the functional realiey tranformer protection utilized in 220kV optical fiber differential protective after protecting action
Malfunctioning the demultiplexing giving failure protection after action presses off lock and realizes the transfer trip of non-ionizing energy loss.
Well solve A factory to become owing to #02 is high standby, 03 open standby change, the comprehensive displacement of #1 from the new booster stations of 220kV about 1.5
Kilometer, follows conventional lines the difficulty that the enforcement of protection scheme run into above main equipment away from too far away；Avoid because apart from too
Far, the CT secondary cable distance of offside, load is big, causes CT C-V characteristic abnormal, causes CT capacity type selecting difficulty, thus makes
Become the possible malfunction of differential protection；Avoid that closing loop is long causes anti-supertension and thunder and lightning, electromagnetic interference difficulty, secondary electricity
There is hidden danger and the mistake conjunction thereby resulted in, the risk of false tripping in cable insulation.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (9)
1., for the guard method of 220kV grade transformator for transformer station's remote power-feeding, it is characterized in that: by optical-fiber longitudinal difference
The short leg main protection of the distance high tension cable that protection switchs as 220kV high voltage side of transformer to GIS, optical-fiber longitudinal difference protection
Device infield is transforming plant protecting room, forms cross protection with the protection zone of substation bus bar protection, and transformer side is arranged
In-situ protection cell configuration optical-fiber longitudinal difference protection coordinates with transformer substation side optical-fiber longitudinal difference protection each other as stub protection, simultaneously
Cross protection is formed with transformer differential protection.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: described transformer differential protection is in the range of high voltage side of transformer sleeve pipe and low-pressure side.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: utilize the remote function of jumping in optical-fiber longitudinal difference protection to carry out unsuccessful reason and trip protection high pressure after tranformer protection action
Side GIS switching manipulation.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: demultiplex pressure to after utilizing the transporting function in optical-fiber longitudinal difference protection to realize tranformer protection action the malfunctioning of failure protection
Locking and realize the transfer trip of non-ionizing energy loss.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: for 220kV grade transformer configuration tranformer protection and stub protection, the transformator of transformer station's remote power-feeding
Protection and stub protection duplicate system retrofit.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: the 220kV grade transformator of transformer station's remote power-feeding, because the high pressure GIS switch of power supply is arranged on transformer substation side, disconnected
Road device failure protection scheme: transformer fault, tranformer protection action, transformator is received in the tripping operation outlet of tranformer protection high-pressure side
Optical fiber longitudinal difference protection distant jump circuit, the tripping operation outlet high jump of offside optical-fiber longitudinal difference protection compresses switch, and offside optical-fiber longitudinal difference is protected simultaneously
Protect remote jumping start failure protection outlet and receive bus differential protecting unsuccessful reason loop.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: during power transformer interior fault, and tranformer protection releases malfunctioning pressing off again and lock out mouth access transformer side optical-fiber longitudinal difference guarantor
Protecting " teletransmission " loop, offside optical-fiber longitudinal difference protection teletransmission collection of letters outlet is received bus differential protecting malfunctioning the pressing off again of releasing and is locked back
Road.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: during short leg fault, offside optical-fiber longitudinal difference protection action, exports straight high jump and compresses switch, and it is poor that malfunctioning outlet accesses bus
Dynamic protection unsuccessful reason loop.
A kind of guard method of the 220kV grade transformator for transformer station's remote power-feeding, its
Feature is: transformer non-electricity protection act, and non-ionizing energy loss is received transformer side through non-electricity protecting device protection exit
Second teletransmission loop of optical-fiber longitudinal difference protection, booster stations optical fiber longitudinal difference protection the second teletransmission collection of letters outlet is directly connected to high pressure
GIS control box does not open malfunctioning TJF trip(ping) circuit, has reached non-ionizing energy loss and has tripped the countermeasure of not actuating breaker failure protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610739279.4A CN106300262B (en) | 2016-08-26 | 2016-08-26 | A kind of 220kV grade transformer protection method for substation's remote power-feeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610739279.4A CN106300262B (en) | 2016-08-26 | 2016-08-26 | A kind of 220kV grade transformer protection method for substation's remote power-feeding |
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| CN106300262A true CN106300262A (en) | 2017-01-04 |
| CN106300262B CN106300262B (en) | 2019-02-05 |
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ID=57677418
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| CN201610739279.4A Active CN106300262B (en) | 2016-08-26 | 2016-08-26 | A kind of 220kV grade transformer protection method for substation's remote power-feeding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086552A (en) * | 2017-06-21 | 2017-08-22 | 四川电力设计咨询有限责任公司 | The protection circuit of enlarging unit connection type system |
| CN107769162A (en) * | 2017-11-22 | 2018-03-06 | 国网新疆电力有限公司电力科学研究院 | Generator protection tripgear based on 3/2 wiring condition power plant |
| CN108680819A (en) * | 2018-05-24 | 2018-10-19 | 国网河南省电力公司检修公司 | A kind of change of current becomes protection exit circuit and matrix test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684153A (en) * | 2012-05-15 | 2012-09-19 | 攀钢集团西昌钢钒有限公司 | Device for controlling linkage of circuit breakers of line transformer bank |
| CN202586279U (en) * | 2012-04-06 | 2012-12-05 | 滁州利华电子有限公司 | Wiring circuit for microcomputer transformer protection device |
| CN103401226A (en) * | 2013-08-09 | 2013-11-20 | 国网山东省电力公司潍坊供电公司 | Substation area differential protection method for intelligent substation |
| CN204886156U (en) * | 2015-06-25 | 2015-12-16 | 中机国能电力工程有限公司 | Protection of line change group |
-
2016
- 2016-08-26 CN CN201610739279.4A patent/CN106300262B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202586279U (en) * | 2012-04-06 | 2012-12-05 | 滁州利华电子有限公司 | Wiring circuit for microcomputer transformer protection device |
| CN102684153A (en) * | 2012-05-15 | 2012-09-19 | 攀钢集团西昌钢钒有限公司 | Device for controlling linkage of circuit breakers of line transformer bank |
| CN103401226A (en) * | 2013-08-09 | 2013-11-20 | 国网山东省电力公司潍坊供电公司 | Substation area differential protection method for intelligent substation |
| CN204886156U (en) * | 2015-06-25 | 2015-12-16 | 中机国能电力工程有限公司 | Protection of line change group |
Non-Patent Citations (1)
| Title |
|---|
| 欧阳兵: "110kV线路变压器组差动保护实现方式分析", 《冶金动力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086552A (en) * | 2017-06-21 | 2017-08-22 | 四川电力设计咨询有限责任公司 | The protection circuit of enlarging unit connection type system |
| CN107086552B (en) * | 2017-06-21 | 2020-02-07 | 四川电力设计咨询有限责任公司 | Protection circuit of extended cell wiring system |
| CN107769162A (en) * | 2017-11-22 | 2018-03-06 | 国网新疆电力有限公司电力科学研究院 | Generator protection tripgear based on 3/2 wiring condition power plant |
| CN108680819A (en) * | 2018-05-24 | 2018-10-19 | 国网河南省电力公司检修公司 | A kind of change of current becomes protection exit circuit and matrix test method |
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| Publication number | Publication date |
|---|---|
| CN106300262B (en) | 2019-02-05 |
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