CN110165658A - Optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control - Google Patents
Optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control Download PDFInfo
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- CN110165658A CN110165658A CN201910287900.1A CN201910287900A CN110165658A CN 110165658 A CN110165658 A CN 110165658A CN 201910287900 A CN201910287900 A CN 201910287900A CN 110165658 A CN110165658 A CN 110165658A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- 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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
Abstract
The invention discloses a kind of optical-fibre channel stand-by heat route in-put of spare power supply methods based on main transformer control, are applied to following route: bridge primary connection circuit in 110kV electric substation 110kV；110kV electric substation 110kV sectionalized single busbar connection primary connection circuit.The present invention solves the problems, such as that substation's capacitive reactive power is excessively high and electric network reactive-load is sent, and improves transformer substation voltage level, prevents partial electric grid overtension, it is horizontal to improve power grid overall operation.Equipment loss and insulation ag(e)ing are reduced, the operational efficiency of substation's main equipment is improved, improves substation's power factor, improves the economy of operation of power networks.The generation of large area blackout when effectively avoiding the main permanent fault for route, realizes power grid self-healing, improves power supply reliability.The present invention can be used as the technical guarantee of the special method of operation of power grid, and the security risk control under the special method of operation of significant increase promotes power network safety operation.
Description
Technical field
The present invention relates to a kind of optical-fibre channel stand-by heat route in-put of spare power supply methods based on main transformer control, belong to electricity
Power transmission & distribution control technology field.
Background technique
With the propulsion of urban construction and the improvement of electric network composition, 110kV and following substation's high and low pressure side are generallyd use
Cable run power supply, causes capacitive reactive power increasing.On the one hand, most of urban district substation is since the time of putting into operation is long, interval
Quantity, which has been saturated, to be caused to lack reactor, can not absorb extra capacitive reactive power；On the other hand, there are equipment for the reactor on new
Defect takes place frequently, running noises disturb residents etc. is unable to run by the restriction of inside and outside portion's factor.More seriously power grid is in festivals or holidays underload
The phenomenon that period reactive power releasing, is generally existing, causes power factor to be substantially reduced, the higher (operation of power networks of partial electric grid area voltage
Show that the capacitive reactive power that 110kV cable run generates is 1MVar/km), active loss is increased, is accelerated apparatus insulated
Aging reduces power supply capacity, affects the economy and safety of operation of power networks.
Analysis is found: the capacitive reactive power that the higher cable run of voltage class generates is bigger, will further raise local electricity
Net working voltage.It powers for using 110kV cable run, grid operation mode requirement: 110kV substation uses 1 loop line road
Power supply, 1 time Standby Line the method for operation, to reduce reactive power that the power supply of 110kV cable run generates to operation of power networks
The higher operation bring of voltage influences.However this method of operation will affect 110kV substation power supply reliability.Therefore, it is necessary to
Backup auto-activating device is installed to make up 110kV substation power supply reliability；The present invention is a large amount of for current urban distribution network cable run
The influence for causing reactive power releasing excessive in power grid after use causes some areas voltage higher, for equipped with optical fiber transport channel
The case where, propose a kind of optical-fibre channel stand-by heat route in-put of spare power supply method based on Bulk Supply Substation control.
Summary of the invention
The purpose of the present invention is to provide a kind of optical-fibre channel stand-by heat route in-put of spare power supply based on main transformer control
Method solves the problems, such as that most of substation capacitive reactive power is excessively high and electric network reactive-load is sent.Using based on based on Bulk Supply Substation control
The optical-fibre channel stand-by heat route in-put of spare power supply method of system, it is excessively high both to have can solve substation's capacitive reactive power, improves substation
It is horizontal to promote power grid overall operation for voltage level；Large area blackout when can effectively avoid the main permanent fault for route again
Occur, realizes power grid self-healing, improve power supply reliability.
The purpose of the present invention is achieved by the following technical programs:
A kind of optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control, is applied to following route:
Route 1, the route 2 of 110kV is connected to the station substation A and the station substation B, 1 one end of route and the power transformation of 220kV respectively
The 110kV bus at the station the A that stands is connected, and the other end is connected with the substation C of the 110kV I section bus stood, the station route 1 and substation A phase
Source side even is equipped with breaker 4DL, and the load side that route 1 is connected with the I section bus that substation C stands is equipped with breaker 1DL；Line
2 one end of road is connected with the 110kV bus that substation B stands, and the other end is connected with the II section bus that substation C stands, route 2 and power transformation
The connected source side of the 110kV bus at the station the B that stands is equipped with breaker 5DL, and route 2 is connected negative with the II section bus that substation C stands
Lotus side is equipped with breaker 2DL；Segmentation or interior bridge breaker 3DL are equipped between the I section bus and II sections of buses at the station substation C；Become
Power station A stands the side 110kV equipped with automatic throw-in equipment of emergency power supply；It is respectively arranged between the station substation A and the station B, between the station A and the station C
Optical fiber transport channel；The station substation B and the station C are equipped with measuring equipment；
The station B measuring equipment has following functions:
It stands in B and installs measuring equipment, which is connected by optical fiber transport channel with the station A backup auto-activating device, and information is carried out
Real-time exchange, and have following functions:
1.1 acquisition functions
(1) switching value data information is acquired:
The location status information of breaker 5DL, closes breaker 5DL letter at the station B bus bus differential protection action information manually
Breath separates breaker 5DL information manually；
(2) analog data information: the station B bus voltage value, breaker 5DL current value is acquired；
1.2 transfer function
Function is acquired by the present apparatus, stands from optical fiber transport channel to A and transmits following message:
(1) transmitting switch amount data information: the location status of breaker 5DL, the station B bus bus differential protection action information, hand
Breaker 5DL information, manual separately breaker 5DL information in dynamic circuit connector；
(2) analog data information: the station B bus voltage value, breaker 5DL current value is transmitted；
1.3 receive capabilities
The information at the station A: the breaker 5DL combined floodgate order that the station A issues is received by the present apparatus by optical fiber transport channel；
1.4 execute function
Present apparatus setting tripping and combined floodgate interface, execute following information: breaker 5DL trip signal that the station A issues and
Breaker 5DL, which closes a floodgate, to be ordered；
The station C measuring equipment has following functions:
It stands in C and installs measuring equipment, which is connected by optical fiber transport channel with the station A backup auto-activating device, and information is carried out
Real-time exchange, and have following functions:
2.1 acquisition functions
(1) switching value data information is acquired:
The location status information of breaker 1DL, breaker 2DL and breaker 3DL, the station 1 C main transformer (I is female) differential protection
Action message, closes breaker 1DL information manually, is separately breaking manually at the station 2 C main transformers (II is female) differential protection action message
Device 1DL information, manually close breaker 2DL information, manually separate breaker 2DL information, manually close breaker 3DL information,
Breaker 3DL information is separated manually；
(2) analog data information: II sections of the I sections of bus voltage values in the station C, the station C bus voltage values is acquired；
2.2 transfer function
Function is acquired by the present apparatus, stands from optical fiber transport channel to A and transmits following message:
(1) transmitting switch amount data information: breaker 1DL, the location status of breaker 2DL and breaker 3DL, C stand No. 1
Main transformer (I is female) differential protection action message, closes breaker 1DL at the station 2 C main transformers (II is female) differential protection action message manually
Information separates breaker 1DL information manually, closes breaker 2DL information manually, separate breaker 2DL information manually, close manually
Upper breaker 3DL information separates breaker 3DL information manually；
(2) analog data information: II sections of the I sections of bus voltage values in the station C, the station C bus voltage values is transmitted；
2.3 receive capabilities
The information that A stands is received by the present apparatus by optical fiber transport channel: the order of breaker 1DL combined floodgate and break that the station A issues
The order of breaker 2DL combined floodgate and breaker 2DL trip signal that road device 1DL trip signal, the station A issue；
2.4 execute function
Present apparatus setting tripping and combined floodgate interface, execute following information: the breaker 1DL that the station A issues close a floodgate order and
The order of breaker 2DL combined floodgate and breaker 2DL trip signal that breaker 1DL trip signal, the station A issue；
Stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel is as follows:
The station 3.A prepared auto restart action logic
It stands in A and backup auto-activating device is set, the prepared auto restart is real-time by optical fiber transport channel and the station B measuring equipment progress information
Exchange, and possess logic judging function:
The station 3.1A one prepared auto restart action logic of the method for operation
The station control process 1.A backup auto-activating device discharging condition, i.e.,
(1) breaker 1DL is separated manually；
(2) breaker 2DL is separated manually；
(3) breaker 3DL is separated manually；
(4) breaker 4DL is separated manually；
(5) breaker 5DL is separated manually；
(6) breaker 1DL is closed manually；
(7) breaker 2DL is closed manually；
(8) breaker 3DL is closed manually；
(9) breaker 4DL is closed manually；
(10) breaker 5DL is closed manually；
(11) the C No. 2 main transformer differential protections in station or II section of bus bus differential protection action；
(12) station B bus differential protecting movement；
When any of the above-described condition meets, the station A backup auto-activating device thoroughly discharges immediately；
The station control process 2.A backup auto-activating device charge condition:
(1) the I section of bus in the station C has voltage；
(2) the II section of bus in the station C has voltage；
(3) breaker 1DL refers to breaker in operating status in closing position, generation, i.e. breaker two sides disconnecting switch is being closed
Gate position, breaker itself is in closing position；
(4) breaker 2DL refers to breaker in hot stand-by duty in open position, generation, and breaker two sides disconnecting switch is being closed
Gate position, breaker itself is in open position；
(5) breaker 3DL is in closing position；
(6) station A bus has voltage；
(7) breaker 4DL is in closing position；
(8) station B bus has voltage；
(9) breaker 5DL is in open position；
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, A stands, and backup auto-activating device is charged to be prolonged
When after complete prepared auto restart charge control, delay time t1；
The tripping of 3. breaker 4DL of control process controls, i.e.,
Condition a.
(1) station A backup auto-activating device charge control is completed；
(2) station A bus no-voltage；
(3) breaker 4DL no current；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 4DL tripping control, while exporting open circuit
Device 4DL tripping starting operation signal；
Condition b.
(1) station A backup auto-activating device charge control is completed；
(2) station A bus bus differential protection action；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 4DL tripping control, while exporting open circuit
Device 4DL tripping starting operation signal；
Condition c.
(1) station A backup auto-activating device charge control is completed；
(2) 1 protection act of route；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 4DL tripping control, while exporting open circuit
Device 4DL tripping starting operation signal；
The control that 4. breaker 1DL trip signal signal of control process issues, i.e.,
Condition a.
(1) breaker 4DL tripping starting operation signal；
(2) breaker 4DL refers to that breaker goes to hot stand-by duty by operating status by closing position to open position, generation,
I.e. for breaker two sides disconnecting switch still in closing position, breaker itself goes to open position by closing position；
When above-mentioned condition all meets, starting issues the control of breaker 1DL trip signal signal；
Condition b.
(1) station A backup auto-activating device charge control is completed；
(2) breaker 4DL is by closing position to open position；
(3) station C I bus no-voltage；
(4) station C II bus no-voltage；
When above-mentioned condition all meets, starting issues the control of breaker 1DL trip signal signal；
The control that 5. breaker 5DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 1DL trip signal issues action signal；
(2) breaker 1DL is by closing position to open position；
(3) station B bus has voltage；
(4) breaker 5DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 5DL combined floodgate command signal；
The control that 5. breaker 2DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 5DL, which closes a floodgate to order, issues action signal；
(2) breaker 5DL refers to that breaker goes to operating status by hot stand-by duty by open position to closing position, generation,
I.e. for breaker two sides disconnecting switch still in closing position, breaker itself goes to closing position by open position；
(3) route 2 has voltage；
(4) breaker 2DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 2DL combined floodgate command signal；
The station 3.2A two prepared auto restart action logic of the method for operation
The station control process 1.A backup auto-activating device discharging condition, i.e.,
(1) breaker 1DL is separated manually；
(2) breaker 2DL is separated manually；
(3) breaker 3DL is separated manually；
(4) breaker 4DL is separated manually；
(5) breaker 5DL is separated manually；
(6) breaker 1DL is closed manually；
(7) breaker 2DL is closed manually；
(8) breaker 3DL is closed manually；
(9) breaker 4DL is closed manually；
(10) breaker 5DL is closed manually；
(11) the C No. 1 main transformer differential protection in station or I sections of bus bus differential protection actions；
(12) station A bus differential protecting movement；
When any of the above-described condition meets, the station A backup auto-activating device thoroughly discharges immediately；
The station control process 2.A backup auto-activating device charge condition:
(1) the I section of bus in the station C has voltage；
(2) the II section of bus in the station C has voltage；
(3) breaker 1DL is in open position；
(4) breaker 2DL is in closing position；
(5) breaker 3DL is in closing position；
(10) station A bus has voltage；
(11) breaker 4DL is in open position；
(12) station B bus has voltage；
(13) breaker 5DL is in closing position；
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, A stands, and backup auto-activating device is charged to be prolonged
When after complete prepared auto restart charge control, delay time t1；
The tripping of 3. breaker 5DL of control process controls, i.e.,
Condition a.
(1) station A backup auto-activating device charge control is completed；
(2) station B bus no-voltage；
(3) breaker 5DL no current；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 5DL tripping control, while exporting open circuit
Device 5DL tripping starting operation signal；
Condition b.
(1) station A backup auto-activating device charge control is completed；
(2) station B bus bus differential protection action；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 5DL tripping control, while exporting open circuit
Device 5DL tripping starting operation signal；
Condition c.
(1) station B backup auto-activating device charge control is completed；
(2) 2 protection act of route；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 5DL tripping control, while exporting open circuit
Device 5DL tripping starting operation signal；
The control that 4. breaker 2DL trip signal signal of control process issues, i.e.,
Condition a.
(1) breaker 5DL tripping starting operation signal；
(2) breaker 5DL is by closing position to open position；
When above-mentioned condition all meets, starting issues the control of breaker 2DL trip signal signal；
Condition b.
(1) station B backup auto-activating device charge control is completed；
(2) breaker 5DL is by closing position to open position；
(3) station C I bus no-voltage；
(4) station C II bus no-voltage；
When above-mentioned condition all meets, starting issues the control of breaker 2DL trip signal signal；
The control that 5. breaker 4DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 2DL trip signal issues action signal；
(2) breaker 2DL is by closing position to open position；
(3) station A bus has voltage；
(4) breaker 4DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 4DL combined floodgate command signal；
The control that 5. breaker 1DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 4DL, which closes a floodgate to order, issues action signal；
(2) breaker 4DL is by open position to closing position；
(3) route 1 has voltage；
(4) breaker 1DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 1DL combined floodgate command signal.
The purpose of the present invention can also be further realized by following technical measures:
The aforementioned optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control, in which:
There is voltage decision threshold UzdBy 70%~75% adjusting of this substation bus bar voltage rating, i.e.,
Uzd=(0.7~0.75) Ue (1)
(1) in formula, UeFor substation bus bar voltage rating, when busbar voltage is greater than UzdShi Weiyou voltage；
Wherein the determination method of no-voltage is as follows: no-voltage decision threshold UzdBy the 30% of this substation bus bar voltage rating
~60% adjusting, i.e.,
Uzd=(0.3~0.6) Ue (2)
(2) in formula, UeThe substation bus bar voltage rating where backup auto-activating device, when busbar voltage is less than UzdFor no electricity
Pressure；
Wherein currentless determination method is as follows:
No current decision threshold is adjusted by minimum load current, is determined as no electricity when electric current is less than minimum load current
Stream.
The aforementioned optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control, in which:
Delay time t1Take 10~20s；
Delay time t2By the end line electricity source II protection starting time setting is greater than, i.e.,
(3) in formula,For the source side end route II protect starting the time, Δ t be it is differential, take 0.3~0.5s；
Compared with prior art, the beneficial effects of the present invention are:
1. solving the problems, such as that substation's capacitive reactive power is excessively high and electric network reactive-load is sent, transformer substation voltage level is improved, is prevented
It is horizontal to improve power grid overall operation for only partial electric grid overtension.
2. reducing equipment loss and insulation ag(e)ing, the operational efficiency of substation's main equipment is improved, substation is improved
Power factor improves the economy of operation of power networks.
3. effectively avoiding the generation of large area blackout when the main permanent fault for route, realizes power grid self-healing, improve
Power supply reliability.
The peace 4. present invention can be used as the technical guarantee of the special method of operation of power grid, under the special method of operation of significant increase
Full risk management and control promotes power network safety operation.
Detailed description of the invention
Fig. 1 is the station A one prepared auto restart action logic of mode；
Fig. 2 is the station A two prepared auto restart action logic of mode；
Fig. 3 fiber optic network configuration diagram；
Fig. 4 is the power transmission and transformation network that the station C is bridge primary connection circuit figure in 110kV electric substation；
Fig. 5 is the power transmission and transformation network that the station C is 110kV electric substation sectionalized single busbar connection primary connection circuit figure；
Fig. 1, symbol description is as follows in 2:
Indicate logical AND relationship, i.e., when input condition all meets, output is effective；
Indicate logic or relationship, i.e., input condition is any when meeting, and output is effective；
It is expressed as opposite with input signal；
-- the t time that is delayed when expression condition all meets exports effectively；Condition is any to be returned immediately when being unsatisfactory for.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 4,5, C packs foot column primary connection circuit in this programme:
(1) bridge primary connection circuit in 110kV electric substation 110kV；
(2) 110kV electric substation 110kV sectionalized single busbar connection primary connection circuit.
Transmission and distribution networks applied by method of the invention are two 110kV routes, Liang Zuo 220kV substation A, B and one
Seat 110kV substation C, comprising:
(1) 110kV route 1,110kV route 2 are respectively from 220kV substation A and B；(2) 110kV route 1 connects respectively
I sections of buses of 220kVA station 110kV bus and the station 110kVC, 1 source side of route have breaker 4DL, Current Transmit 4, route 1
Load side has breaker 1DL, Current Transmit 1；(3) 110kV route 2 connect respectively 220kVB station 110kV bus and
110kVC stands II sections of buses, and 2 source side of route has a breaker 5DL, Current Transmit 5,2 load side of route have breaker 2DL,
Current Transmit 5；(3) it is connected to voltage transformer pt 3 on the 110kV bus of the station A, is connected to voltage transformer on 110kV bus
PT4；(4) it is connected to voltage transformer pt 4 on the 110kV bus of the station B, voltage transformer pt 4 is connected on 110kV bus；(5) C stands
It is connected to voltage transformer pt 1 on 110kVI sections of buses, voltage transformer pt 2 is connected on 110kV pair bus, is had between two sections of buses
Current Transmit and segmentation (interior bridge) breaker 3DL；(6) A stands the side 110kV equipped with automatic throw-in equipment of emergency power supply；(7)A
It stands between the station B, be respectively arranged with optical fiber transport channel between the station A and the station C；Optical fiber transport channel as shown in Figure 3 can be used: with
The optical fiber transport channel that 110kV route is joint used；Using the point-to-point designated lane of detour；Using with communicate the multiplexing shared
Optical fiber transport channel.(8) station B and the station C are equipped with measuring equipment.
(as shown in Figure 3) can be used in optical fiber transport channel:
(1) optical fiber transport channel joint used with 110kV route；
(2) the point-to-point designated lane of detour is used；
(3) it uses and communicates the multiplexing fiber-optic transmission channel shared.
For above-mentioned transmission and distribution networks, the optical-fibre channel stand-by heat route standby electricity based on Bulk Supply Substation control how is realized
Source puts into method, and the embodiment (by taking Fig. 1,2 as an example) of the method for the present invention is given below:
1, the method for operation one
1.1 the preparation stage
1DL, 3DL and 4DL, in hot stand-by duty, detect C and are standing I section of busbar voltage just in combined floodgate operating status, 2DL and 5DL
Often, when II section of the station C busbar voltage is normal, the station A busbar voltage is normal, the station B busbar voltage is normal, the backup auto-activating device charging of the station A, no
Then thoroughly electric discharge immediately when meeting condition.
1.2 action process
1.2.1A station accident, power loss, operational circumstances
(1) 1 protection act of A station track road
When A stands, and 1 protection act of route (reclosing of all fronts cable run generally deactivates) occurs, 4DL tripping, route 1
Power loss.Detect A station backup auto-activating device charging complete, 4DL tripping starting operation signal issued, 4DL by "on" position to divide
After lock, stands to C and issue 1DL trip signal.Or detection A station backup auto-activating device charging complete, 4DL are stood by "on" position to separating brake, C
When II sections of bus no-voltages of I sections of bus no-voltages and the station C, stands to C and issue 1DL trip signal.
The station C receives the 1DL trip signal that the station A issues, and executes 1DL trip signal by measuring equipment.
Issued when the station A detects 1DL trip signal signal, 1DL by "on" position to separating brake, B station bus have voltage,
5DL stands to B in gate-dividing state and issues 5DL combined floodgate order.When 5DL combined floodgate command signal has issued, 5DL by gate-dividing state to
Combined floodgate, route 2 have voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stand to C and issue 2DL combined floodgate order.
The 2DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 2DL.At this point, the station C is extensive
It powers again to route 2.
(2) station A 4DL jump
When A stands, and 4DL jump occurs, 1 power loss of route.A station backup auto-activating device charging complete, 4DL are detected by "on" position
When standing II sections of bus no-voltages of I sections of bus no-voltages and the station C to separating brake, C, stands to C and issue 1DL trip signal.
The station C receives the 1DL trip signal that the station A issues, and executes 1DL trip signal by measuring equipment.
Issued when the station A detects 1DL trip signal signal, 1DL by "on" position to separating brake, B station bus have voltage,
5DL stands to B in gate-dividing state and issues 5DL combined floodgate order.When 5DL combined floodgate command signal has issued, 5DL by gate-dividing state to
Combined floodgate, route 2 have voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stand to C and issue 2DL combined floodgate order.
The 2DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 2DL.At this point, the station C is extensive
It powers again to route 2.
(3) station A bus power loss
When the station A, bus causes power loss due to higher level's power grid, 1 power loss of route.Detect the backup auto-activating device charging of the station A
It completes, the station A bus no-voltage, 4DL no current, be delayed t2Starting 4DL tripping afterwards.Detect 4DL tripping starting operation signal
After sending, 4DL are by "on" position to separating brake, stand to C and issue 1DL trip signal.Or detection A station backup auto-activating device charging complete,
When 4DL is by II sections of "on" position to separating brake, the C I sections of bus no-voltages in station and the station C bus no-voltages, 1DL tripping is issued to the station C and is ordered
It enables.
The station C receives the 1DL trip signal that the station A issues, and executes 1DL trip signal by measuring equipment.
Issued when the station A detects 1DL trip signal signal, 1DL by "on" position to separating brake, B station bus have voltage,
5DL stands to B in gate-dividing state and issues 5DL combined floodgate order.When 5DL combined floodgate command signal has issued, 5DL by gate-dividing state to
Combined floodgate, route 2 have voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stand to C and issue 2DL combined floodgate order.
The 2DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 2DL.At this point, the station C is extensive
It powers again to route 2.
(4) station A bus bus differential protection action
When A stands bus bus differential protection action, 4DL tripping, 1 power loss of route.Detect that the station A backup auto-activating device has charged
It after starting operation signal has issued, 4DL is by "on" position to separating brake, stands to C at, 4DL tripping and issues 1DL trip signal.Or inspection
It surveys A station backup auto-activating device charging complete, 4DL and II sections of buses of I sections of bus no-voltages and the station C is stood without electricity by "on" position to separating brake, C
When pressure, stands to C and issue 1DL trip signal.
The station C receives the 1DL trip signal that the station A issues, and executes 1DL trip signal by measuring equipment.
Issued when the station A detects 1DL trip signal signal, 1DL by "on" position to separating brake, B station bus have voltage,
5DL stands to B in gate-dividing state and issues 5DL combined floodgate order.When 5DL combined floodgate command signal has issued, 5DL by gate-dividing state to
Combined floodgate, route 2 have voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stand to C and issue 2DL combined floodgate order.
The 2DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 2DL.At this point, the station C is extensive
It powers again to route 2.
(5) 4DL is separated manually
When separating 4DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
1.2.2B station accident, power loss, operational circumstances
(1) station B bus bus differential protection action
When B stands bus bus differential protection action, then the station A backup auto-activating device thoroughly discharges immediately.
(2) 5DL is closed manually
When closing 5DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
1.2.3C station accident, power loss, operational circumstances
(1) No. 2 main transformer (II section of bus) differential protection movement
C stand internal bridge when No. 2 transform er differential protections movement or II section of bus differential protecting is dynamic when single-trunk segmental wiring
Make, then the station A backup auto-activating device thoroughly discharges immediately.
(4) 1DL is separated manually
When separating 1DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
(5) 3DL is separated manually
When separating 3DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
(6) 2DL is closed manually
When closing 2DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
2, the method for operation two
2.1 the preparation stage
2DL, 3DL and 5DL, in hot stand-by duty, detect C and are standing I section of busbar voltage just in combined floodgate operating status, 1DL and 4DL
Often, when II section of the station C busbar voltage is normal, the station A busbar voltage is normal, the station B busbar voltage is normal, the backup auto-activating device charging of the station A, no
Then thoroughly electric discharge immediately when meeting condition.
2.2 action process
2.2.1B station accident, power loss, operational circumstances
(1) 2 protection act of B station track road
When B stands, and 2 protection act of route (reclosing of all fronts cable run generally deactivates) occurs, 5DL tripping, route 2
Power loss.Detect A station backup auto-activating device charging complete, 5DL tripping starting operation signal issued, 5DL by "on" position to divide
After lock, stands to C and issue 2DL trip signal.Or detection A station backup auto-activating device charging complete, 5DL are stood by "on" position to separating brake, C
When II sections of bus no-voltages of I sections of bus no-voltages and the station C, stands to C and issue 2DL trip signal.
The station C receives the 2DL trip signal that the station A issues, and executes 2DL trip signal by measuring equipment.
Issued when the station A detects 2DL trip signal signal, 2DL by "on" position to separating brake, A station bus have voltage,
In gate-dividing state, starting 4DL's 4DL closes a floodgate.When 4DL combined floodgate starting operation signal has issued, 4DL by gate-dividing state to close a floodgate,
Route 1 has voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stands to C and issues 1DL combined floodgate order.
The 1DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 1DL.At this point, the station C is extensive
It powers again to route 1.
(2) station B 5DL jump
When B stands, and 5DL jump occurs, 2 power loss of route.B station backup auto-activating device charging complete, 5DL are detected by "on" position
When standing II sections of bus no-voltages of I sections of bus no-voltages and the station C to separating brake, C, stands to C and issue 2DL trip signal.
The station C receives the 2DL trip signal that the station A issues, and executes 2DL trip signal by measuring equipment.
Issued when the station A detects 2DL trip signal signal, 2DL by "on" position to separating brake, A station bus have voltage,
In gate-dividing state, starting 4DL's 4DL closes a floodgate.When 4DL combined floodgate starting operation signal has issued, 4DL by gate-dividing state to close a floodgate,
Route 1 has voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stands to C and issues 1DL combined floodgate order.
The 1DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 1DL.At this point, the station C is extensive
It powers again to route 1.
(3) station B bus power loss
When the station B, bus causes power loss due to higher level's power grid, 2 power loss of route.Detect the backup auto-activating device charging of the station A
It completes, the station B bus no-voltage, 5DL no current, be delayed t2The backward station B issues starting 5DL trip signal.Detect 5DL tripping life
It enables signal issue, after 5DL is by "on" position to separating brake, stands to C and issue 2DL trip signal.Or the station detection A backup auto-activating device fills
When electricity is completed, 5DL is by II sections of "on" position to separating brake, the C I sections of bus no-voltages in station and the station C bus no-voltages, stands to C and issue 2DL
Trip signal.
The station C receives the 2DL trip signal that the station A issues, and executes 2DL trip signal by measuring equipment.
Issued when the station A detects 2DL trip signal signal, 2DL by "on" position to separating brake, A station bus have voltage,
In gate-dividing state, starting 4DL's 4DL closes a floodgate.When 4DL combined floodgate starting operation signal has issued, 4DL by gate-dividing state to close a floodgate,
Route 1 has voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stands to C and issues 1DL combined floodgate order.
The 1DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 1DL.At this point, the station C is extensive
It powers again to route 1.
(4) station B bus bus differential protection action
When B stands bus bus differential protection action, 5DL tripping, 2 power loss of route.Detect that the station A backup auto-activating device has charged
It after starting operation signal has issued, 5DL is by "on" position to separating brake, stands to C at, 5DL tripping and issues 2DL trip signal.Or inspection
It surveys A station backup auto-activating device charging complete, 5DL and II sections of buses of I sections of bus no-voltages and the station C is stood without electricity by "on" position to separating brake, C
When pressure, stands to C and issue 2DL trip signal.
The station C receives the 2DL trip signal that the station A issues, and executes 2DL trip signal by measuring equipment.
Issued when the station A detects 2DL trip signal signal, 2DL by "on" position to separating brake, A station bus have voltage,
In gate-dividing state, starting 4DL's 4DL closes a floodgate.When 4DL combined floodgate starting operation signal has issued, 4DL by gate-dividing state to close a floodgate,
Route 1 has voltage, 1DL in gate-dividing state, 2DL in gate-dividing state, stands to C and issues 1DL combined floodgate order.
The 1DL that the station C receives the sending of the station A, which closes a floodgate, to be ordered, and is closed a floodgate and is ordered by measuring equipment execution 1DL.At this point, the station C is extensive
It powers again to route 1.
(5) 5DL is separated manually
When separating 5DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
2.2.2A station accident, power loss, operational circumstances
(1) station A bus bus differential protection action
When A stands bus bus differential protection action, then the station A backup auto-activating device thoroughly discharges immediately.
(2) 4DL is closed manually
When closing 4DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
The station 2.3C accident, power loss, operational circumstances
(1) No. 1 main transformer (I sections of buses) differential protection movement
C stand internal bridge when No. 1 transform er differential protection movement or I section bus differential protectings move when single-trunk segmental wiring
Make, then the station A backup auto-activating device thoroughly discharges immediately.
(4) 2DL is separated manually
When separating 2DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
(5) 3DL is separated manually
When separating 3DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
(6) 1DL is closed manually
When closing 1DL manually, then the station A backup auto-activating device thoroughly discharges immediately.
In addition to the implementation, the present invention can also have other embodiments, all to use equivalent substitution or equivalent transformation shape
At technical solution, be all fallen within the protection domain of application claims.
Claims (3)
1. a kind of optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control, is applied to following route:
Route 1, the route 2 of 110kV is connected to the station substation A and the station substation B, 1 one end of route and the substation A of 220kV respectively
The 110kV bus stood is connected, and the other end is connected with the substation C of the 110kV I section bus stood, and route 1 is connected with the station substation A
Source side be equipped with breaker 4DL, the load side that route 1 is connected with the I section bus that substation C stands is equipped with breaker 1DL；Route
2 one end are connected with the 110kV bus that substation B stands, and the other end is connected with the II section bus that substation C stands, route 2 and substation
The source side that the 110kV bus at the station B is connected is equipped with breaker 5DL, the load that route 2 is connected with the II section bus that substation C stands
Side is equipped with breaker 2DL；Segmentation or interior bridge breaker 3DL are equipped between the I section bus and II sections of buses at the station substation C；Power transformation
The A that stands stands the side 110kV equipped with automatic throw-in equipment of emergency power supply；Light is respectively arranged between the station substation A and the station B, between the station A and the station C
Fine transmission channel；The station substation B and the station C are equipped with measuring equipment；
The station B measuring equipment has following functions:
It stands in B and installs measuring equipment, which is connected by optical fiber transport channel with the station A backup auto-activating device, and it is real-time to carry out information
Exchange, and have following functions:
1.1 acquisition functions
(1) switching value data information is acquired:
The location status information of breaker 5DL, closes breaker 5DL information, hand at the station B bus bus differential protection action information manually
It is dynamic to separate breaker 5DL information；
(2) analog data information: the station B bus voltage value, breaker 5DL current value is acquired；
1.2 transfer function
Function is acquired by the present apparatus, stands from optical fiber transport channel to A and transmits following message:
(1) transmitting switch amount data information: the location status of breaker 5DL, closes at the station B bus bus differential protection action information manually
Upper breaker 5DL information separates breaker 5DL information manually；
(2) analog data information: the station B bus voltage value, breaker 5DL current value is transmitted；
1.3 receive capabilities
The information at the station A: the breaker 5DL combined floodgate order that the station A issues is received by the present apparatus by optical fiber transport channel；
1.4 execute function
Present apparatus setting tripping and combined floodgate interface execute following information: the breaker 5DL trip signal and open circuit that the station A issues
Device 5DL, which closes a floodgate, to be ordered；
The station C measuring equipment has following functions:
It stands in C and installs measuring equipment, which is connected by optical fiber transport channel with the station A backup auto-activating device, and it is real-time to carry out information
Exchange, and have following functions:
2.1 acquisition functions
(1) switching value data information is acquired:
The location status information of breaker 1DL, breaker 2DL and breaker 3DL, the station 1 C main transformer (I is female) differential protection movement
Information, closes breaker 1DL information manually, separates breaker 1DL manually at the station 2 C main transformers (II is female) differential protection action message
Information closes breaker 2DL information manually, separates breaker 2DL information manually, closes breaker 3DL information, manual point manually
Circuit breaker 3DL information；
(2) analog data information: II sections of the I sections of bus voltage values in the station C, the station C bus voltage values is acquired；
2.2 transfer function
Function is acquired by the present apparatus, stands from optical fiber transport channel to A and transmits following message:
(1) transmitting switch amount data information: No. 1 breaker 1DL, the location status of breaker 2DL and breaker 3DL, the station C main transformer
(I female) differential protection action message, C stand No. 2 main transformers (II is female) differential protection action message, close manually breaker 1DL information,
Manually separate breaker 1DL information, manually close breaker 2DL information, manually separate breaker 2DL information, close manually it is disconnected
Road device 3DL information separates breaker 3DL information manually；
(2) analog data information: II sections of the I sections of bus voltage values in the station C, the station C bus voltage values is transmitted；
2.3 receive capabilities
The information at the station A is received by the present apparatus by optical fiber transport channel: the order of breaker 1DL combined floodgate and breaker that the station A issues
The order of breaker 2DL combined floodgate and breaker 2DL trip signal that 1DL trip signal, the station A issue；
2.4 execute function
Present apparatus setting tripping and combined floodgate interface execute following information: the order of breaker 1DL combined floodgate and open circuit that the station A issues
The order of breaker 2DL combined floodgate and breaker 2DL trip signal that device 1DL trip signal, the station A issue；
It is characterized in that, the stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel is as follows:
The station 3.A prepared auto restart action logic
It stands in A and backup auto-activating device is set, which is carried out information and handed in real time by optical fiber transport channel and the station B measuring equipment
It changes, and possesses logic judging function:
The station 3.1 A one prepared auto restart action logic of the method for operation
The station control process 1.A backup auto-activating device discharging condition, i.e.,
(1) breaker 1DL is separated manually；
(2) breaker 2DL is separated manually；
(3) breaker 3DL is separated manually；
(4) breaker 4DL is separated manually；
(5) breaker 5DL is separated manually；
(6) breaker 1DL is closed manually；
(7) breaker 2DL is closed manually；
(8) breaker 3DL is closed manually；
(9) breaker 4DL is closed manually；
(10) breaker 5DL is closed manually；
(11) the C No. 2 main transformer differential protections in station or II section of bus bus differential protection action；
(12) station B bus differential protecting movement；
When any of the above-described condition meets, the station A backup auto-activating device thoroughly discharges immediately；
The station control process 2.A backup auto-activating device charge condition:
(1) the I section of bus in the station C has voltage；
(2) the II section of bus in the station C has voltage；
(3) breaker 1DL refers to breaker in operating status in closing position, generation, i.e., breaker two sides disconnecting switch is in closing position
It sets, breaker itself is in closing position；
(4) breaker 2DL refers to breaker in hot stand-by duty in open position, generation, and breaker two sides disconnecting switch is in closing position
It sets, breaker itself is in open position；
(5) breaker 3DL is in closing position；
(6) station A bus has voltage；
(7) breaker 4DL is in closing position；
(8) station B bus has voltage；
(9) breaker 5DL is in open position；
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, A stands after the charged delay of backup auto-activating device
Complete prepared auto restart charge control, delay time t1；
The tripping of 3. breaker 4DL of control process controls, i.e.,
Condition a.
(1) station A backup auto-activating device charge control is completed；
(2) station A bus no-voltage；
(3) breaker 4DL no current；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 4DL tripping control, while exporting breaker 4DL
Trip starting operation signal；
Condition b.
(1) station A backup auto-activating device charge control is completed；
(2) station A bus bus differential protection action；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 4DL tripping control, while exporting breaker 4DL
Trip starting operation signal；
Condition c.
(1) station A backup auto-activating device charge control is completed；
(2) 1 protection act of route；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 4DL tripping control, while exporting breaker 4DL
Trip starting operation signal；
The control that 4. breaker 1DL trip signal signal of control process issues, i.e.,
Condition a.
(1) breaker 4DL tripping starting operation signal；
(2) breaker 4DL refers to that breaker goes to hot stand-by duty by operating status by closing position to open position, generation, i.e., disconnected
For road device two sides disconnecting switch still in closing position, breaker itself goes to open position by closing position；
When above-mentioned condition all meets, starting issues the control of breaker 1DL trip signal signal；
Condition b.
(1) station A backup auto-activating device charge control is completed；
(2) breaker 4DL is by closing position to open position；
(3) station C I bus no-voltage；
(4) station C II bus no-voltage；
When above-mentioned condition all meets, starting issues the control of breaker 1DL trip signal signal；
The control that 5. breaker 5DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 1DL trip signal issues action signal；
(2) breaker 1DL is by closing position to open position；
(3) station B bus has voltage；
(4) breaker 5DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 5DL combined floodgate command signal；
The control that 5. breaker 2DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 5DL, which closes a floodgate to order, issues action signal；
(2) breaker 5DL refers to that breaker goes to operating status by hot stand-by duty by open position to closing position, generation, i.e., disconnected
For road device two sides disconnecting switch still in closing position, breaker itself goes to closing position by open position；
(3) route 2 has voltage；
(4) breaker 2DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 2DL combined floodgate command signal；
The station 3.2 A two prepared auto restart action logic of the method for operation
The station control process 1.A backup auto-activating device discharging condition, i.e.,
(1) breaker 1DL is separated manually；
(2) breaker 2DL is separated manually；
(3) breaker 3DL is separated manually；
(4) breaker 4DL is separated manually；
(5) breaker 5DL is separated manually；
(6) breaker 1DL is closed manually；
(7) breaker 2DL is closed manually；
(8) breaker 3DL is closed manually；
(9) breaker 4DL is closed manually；
(10) breaker 5DL is closed manually；
(11) the C No. 1 main transformer differential protection in station or I sections of bus bus differential protection actions；
(12) station A bus differential protecting movement；
When any of the above-described condition meets, the station A backup auto-activating device thoroughly discharges immediately；
The station control process 2.A backup auto-activating device charge condition:
(1) the I section of bus in the station C has voltage；
(2) the II section of bus in the station C has voltage；
(3) breaker 1DL is in open position；
(4) breaker 2DL is in closing position；
(5) breaker 3DL is in closing position；
(10) station A bus has voltage；
(11) breaker 4DL is in open position；
(12) station B bus has voltage；
(13) breaker 5DL is in closing position；
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, A stands after the charged delay of backup auto-activating device
Complete prepared auto restart charge control, delay time t1；
The tripping of 3. breaker 5DL of control process controls, i.e.,
Condition a.
(1) station A backup auto-activating device charge control is completed；
(2) station B bus no-voltage；
(3) breaker 5DL no current；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 5DL tripping control, while exporting breaker 5DL
Trip starting operation signal；
Condition b.
(1) station A backup auto-activating device charge control is completed；
(2) station B bus bus differential protection action；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 5DL tripping control, while exporting breaker 5DL
Trip starting operation signal；
Condition c.
(1) station B backup auto-activating device charge control is completed；
(2) 2 protection act of route；
When above-mentioned condition is all satisfied, by delay time t2, starting breaker 5DL tripping control, while exporting breaker 5DL
Trip starting operation signal；
The control that 4. breaker 2DL trip signal signal of control process issues, i.e.,
Condition a.
(1) breaker 5DL tripping starting operation signal；
(2) breaker 5DL is by closing position to open position；
When above-mentioned condition all meets, starting issues the control of breaker 2DL trip signal signal；
Condition b.
(1) station B backup auto-activating device charge control is completed；
(2) breaker 5DL is by closing position to open position；
(3) station C I bus no-voltage；
(4) station C II bus no-voltage；
When above-mentioned condition all meets, starting issues the control of breaker 2DL trip signal signal；
The control that 5. breaker 4DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 2DL trip signal issues action signal；
(2) breaker 2DL is by closing position to open position；
(3) station A bus has voltage；
(4) breaker 4DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 4DL combined floodgate command signal；
The control that 5. breaker 1DL combined floodgate command signal of control process issues, i.e.,
(1) breaker 4DL, which closes a floodgate to order, issues action signal；
(2) breaker 4DL is by open position to closing position；
(3) route 1 has voltage；
(4) breaker 1DL is in open position；
When above-mentioned condition all meets, starting issues the control of breaker 1DL combined floodgate command signal.
2. the optical-fibre channel stand-by heat route in-put of spare power supply method as described in claim 1 based on main transformer control, feature
It is, in which:
There is voltage decision threshold UzdBy 70%~75% adjusting of this substation bus bar voltage rating, i.e.,
Uzd=(0.7~0.75) Ue (1)
(1) in formula, UeFor substation bus bar voltage rating, when busbar voltage is greater than UzdShi Weiyou voltage；
Wherein the determination method of no-voltage is as follows: no-voltage decision threshold UzdBy this substation bus bar voltage rating 30%~
60% adjusting, i.e.,
Uzd=(0.3~0.6) Ue (2)
(2) in formula, UeThe substation bus bar voltage rating where backup auto-activating device, when busbar voltage is less than UzdFor no-voltage；
Wherein currentless determination method is as follows:
No current decision threshold is adjusted by minimum load current, is determined as no current when electric current is less than minimum load current.
3. the optical-fibre channel stand-by heat route in-put of spare power supply method as described in claim 1 based on main transformer control, feature
It is, in which:
Delay time t1Take 10~20s；
Delay time t2By the end line electricity source II protection starting time setting is greater than, i.e.,
(3) in formula,For the source side end route II protect starting the time, Δ t be it is differential, take 0.3~0.5s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287900.1A CN110165658A (en) | 2019-04-11 | 2019-04-11 | Optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287900.1A CN110165658A (en) | 2019-04-11 | 2019-04-11 | Optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control |
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| Publication Number | Publication Date |
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| CN110165658A true CN110165658A (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374645A (en) * | 2020-10-14 | 2022-04-19 | 中国南方电网有限责任公司超高压输电公司 | Inter-station communication data roundabout method for multiple converter stations |
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| WO2007055593A1 (en) * | 2005-11-11 | 2007-05-18 | Norsk Hydro Produksjon A.S. | Arrangement for internal black start of subsea power system |
| CN103855713A (en) * | 2014-03-31 | 2014-06-11 | 国网上海市电力公司 | Power distribution net rack wiring structure |
| CN204156594U (en) * | 2014-09-26 | 2015-02-11 | 南京南瑞继保电气有限公司 | A kind of region backup auto-activating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007055593A1 (en) * | 2005-11-11 | 2007-05-18 | Norsk Hydro Produksjon A.S. | Arrangement for internal black start of subsea power system |
| CN103855713A (en) * | 2014-03-31 | 2014-06-11 | 国网上海市电力公司 | Power distribution net rack wiring structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114374645A (en) * | 2020-10-14 | 2022-04-19 | 中国南方电网有限责任公司超高压输电公司 | Inter-station communication data roundabout method for multiple converter stations |
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Application publication date: 20190823 |