CN109950915A - Stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel - Google Patents

Stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel Download PDF

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Publication number
CN109950915A
CN109950915A CN201910287916.2A CN201910287916A CN109950915A CN 109950915 A CN109950915 A CN 109950915A CN 201910287916 A CN201910287916 A CN 201910287916A CN 109950915 A CN109950915 A CN 109950915A
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breaker
station
bus
condition
activating device
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CN109950915B (en
Inventor
马骏毅
任萱
张大林
施伟成
汤大海
杜炜凝
马海薇
李静
巴宇
许象明
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State Grid Jiangsu Electric Power Co Ltd Zhenjiang Power Supply Branch
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State Grid Jiangsu Electric Power Co Ltd Zhenjiang Power Supply Branch
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

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Abstract

The stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel that the invention discloses a kind of is applied to following primary connection circuit: 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

Stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel
Technical field
The stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel that the present invention relates to a kind of, belongs to Electrical power 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, proposes a kind of based on power supply sidelight The stand-by heat lines join in-put of spare power supply method in fine channel.
Summary of the invention
The purpose of the present invention is to provide a kind of, and the stand-by heat lines join backup power source based on source side optical-fibre channel is thrown Enter method, solves the problems, such as that most of substation capacitive reactive power is excessively high and electric network reactive-load is sent.Using logical based on power supply optical fiber The stand-by heat lines join in-put of spare power supply method in road, it is excessively high both to have can solve substation's capacitive reactive power, improves transformer substation voltage It is horizontal to promote power grid overall operation for level;The generation of large area blackout when can effectively avoid the main permanent fault for route again, It realizes power grid self-healing, improves power supply reliability.
The purpose of the present invention is achieved by the following technical programs:
A kind of stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel is applied to as offline Road:
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 The station power station A and the station the substation B side 110kV are equipped with automatic throw-in equipment of emergency power supply;Between the station substation A and the station substation B Equipped with optical fiber transport channel;Stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel is as follows:
The station 1.A backup auto-activating device has following functions
It stands in A and installs backup auto-activating device, which is connected by optical fiber transport channel with the B backup auto-activating device stood, and is carried out Information real-time exchange, and have following functions:
1.1 acquisition functions
(1) switching value data information is acquired:
The location status information of breaker 4DL, closes breaker 4DL letter at the station A bus bus differential protection action information manually Breath separates breaker 4DL information manually;
(2) analog data information: the station A bus voltage value is acquired;
1.2 transfer function
Function is acquired by the present apparatus, stands from optical fiber transport channel to B and transmits following message:
(1) transmitting switch amount data information: the location status of breaker 4DL, the station A bus bus differential protection action information, hand Breaker 4DL information, manual separately breaker 4DL information in dynamic circuit connector;
(2) analog data information: the station A bus voltage value is transmitted;
(3) it transmits to close a floodgate to the breaker 5DL that the station B issues and order;
1.3 receive capabilities
The information at the station B: the breaker 4DL combined floodgate order that the station B issues is received by the present apparatus by optical fiber transport channel;
The station 2.B backup auto-activating device has function
It stands in B and installs backup auto-activating device, which is connected by optical fiber transport channel with the A backup auto-activating device stood, and is carried out Information 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 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 is transmitted;
(3) it the other information transmitted: stands to A and issues breaker 4DL combined floodgate order;
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;
The station 3.A prepared auto restart action logic
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 is as follows:
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station B bus bus differential protection action;
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 is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in closing position, and closing position generation refers to breaker in operating status, i.e. breaker two sides are isolated Switch is in closing position, and breaker itself is in closing position;
(4) for breaker 5DL in open position, in open position generation, refers to breaker in hot stand-by duty, the isolation of breaker two sides Switch is in closing position, and breaker itself 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
Control process 3: the tripping control condition of breaker 4DL is as follows:
Condition a.
(1) station A backup auto-activating device charge control is completed;
(2) 1 protection act of power circuit;
When above-mentioned condition all meets, by delay time t2, starting breaker 4DL tripping control, while exporting disconnected Road device 4DL tripping starting operation signal;
Condition b.
(1) station A backup auto-activating device charge control is completed;
(2) station A bus differential protecting movement;
When above-mentioned condition all meets, by delay time t2, starting breaker 4DL tripping control, while exporting disconnected Road device 4DL tripping starting operation signal;
Condition c.
(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 all meets, by delay time t2, starting breaker 4DL tripping control, while exporting disconnected Road device 4DL tripping starting operation signal;
Control process 4: the control condition that breaker 5DL combined floodgate command signal issues is as follows:
Condition a.
(1) station A backup auto-activating device charge control is completed;
(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 switchs to open position by closing position;
When above-mentioned condition all meets, starting issues the control of breaker 5DL combined floodgate command signal;
Condition b.
(1) breaker 4DL tripping starting operation signal;
(2) breaker 4DL is by closing position to open position;
When above-mentioned condition all meets, starting issues the control of breaker 5DL combined floodgate command signal;
3.2A two prepared auto restart action logic of the method for operation of standing is as follows:
The station control process 1:A backup auto-activating device discharging condition is as follows:
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station A bus bus differential protection action;
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 is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in open position;
(4) 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
Control process 3: the shutting-brake control of breaker 4DL, i.e.,
(1) station A backup auto-activating device charge control is completed;
(2) breaker 4DL combined floodgate order is received;
(3) station A bus has voltage;
(4) breaker 4DL is in open position;
When above-mentioned condition all meets, by certain delay time t1, start breaker 4DL shutting-brake control;
The station 4.B prepared auto restart action logic
The station 4.1B one prepared auto restart action logic of the method for operation
The station control process 1:B backup auto-activating device discharging condition is as follows:
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station B bus bus differential protection action;
When any of the above-described condition meets, the station B backup auto-activating device thoroughly discharges immediately;
The station control process 2:B backup auto-activating device charge condition is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in closing position;
(4) breaker 5DL is in open position;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, B stands, and backup auto-activating device is charged to be prolonged When after complete prepared auto restart charge control, delay time t1
Control process 3: the shutting-brake control of breaker 5DL, i.e.,
(1) station B backup auto-activating device charge control is completed;
(2) breaker 5DL combined floodgate order is received;
(3) station B bus has voltage;
(4) breaker 5DL is in open position;
When above-mentioned condition all meets, by delay time t1, start breaker 5DL shutting-brake control;
The station 4.2B two prepared auto restart action logic of the method for operation is as follows:
The station control process 1:B backup auto-activating device discharging condition, i.e.,
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station A bus bus differential protection action;
When any of the above-described condition meets, the station B backup auto-activating device thoroughly discharges immediately;
The station control process 2:B backup auto-activating device charge condition is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in open position;
(4) breaker 5DL is in closing position;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, B stands, and backup auto-activating device is charged to be prolonged When after complete prepared auto restart charge control, delay time t1
Control process 3: the tripping control of breaker 5DL, i.e.,
Condition a.
(1) station B backup auto-activating device charge control is completed;
(2) 2 protection act of power circuit;
When above-mentioned condition all meets, by delay time t2, starting breaker 5DL tripping control, while exporting disconnected Road device 5DL tripping starting operation signal;
Condition b.
(1) station B backup auto-activating device charge control is completed;
(2) station B bus differential protecting movement;
When above-mentioned condition all meets, by delay time t2, starting breaker 5DL tripping control, while exporting disconnected Road device 5DL tripping starting operation signal;
Condition c.
(1) station B backup auto-activating device charge control is completed;
(2) station B bus no-voltage
(3) breaker 5DL no current;
When above-mentioned condition all meets, by delay time t2, starting breaker 5DL tripping control, while exporting disconnected Road device 5DL tripping starting operation signal;
Control process 4: the control condition that breaker 4DL combined floodgate command signal issues is as follows:
Condition a.
(1) station B backup auto-activating device charge control is completed;
(2) breaker 5DL is by closing position to open position;
When above-mentioned condition all meets, starting issues the control of breaker 4DL combined floodgate command signal;
Condition b.
(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 4DL combined floodgate command signal;
The station 5.C prepared auto restart action logic
The station 5.1C one prepared auto restart action logic of the method for operation is as follows:
The station control process 1:C 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 1DL is closed manually;
(5) breaker 2DL is closed manually;
(6) breaker 3DL is closed manually;
(7) the C No. 2 main transformer differential protections in station or II section of bus bus differential protection action;
When any of the above-described condition meets, the station C backup auto-activating device thoroughly discharges immediately;
The station control process 2:C 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 closing position;
(4) breaker 2DL is in open position;
(5) breaker 3DL is in closing position;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, C stands, and backup auto-activating device is charged to be prolonged When after complete prepared auto restart charge control, delay time t1
Control process 3: the tripping control of breaker 1DL, i.e.,
(1) station C backup auto-activating device charge control is completed;
(2) breaker 1DL is in closing position;
(3) the I section of bus no-voltage in the station C;
(4) breaker 1DL no current;
When above-mentioned condition is all satisfied, by delay time t4, starting breaker 1DL tripping control, while exporting open circuit Device 1DL tripping starting operation signal;
Control process 4: the shutting-brake control of breaker 2DL, i.e.,
Condition a.
(1) station C backup auto-activating device charge control is completed;
(2) breaker 1DL is by closing position to open position;
(3) route 2 has voltage;
(4) breaker 2DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 2DL shutting-brake control;
Condition b.
(1) breaker 1DL tripping starting operation signal;
(2) route 2 has voltage;
(3) breaker 2DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 2DL shutting-brake control;
The station 5.2C two prepared auto restart action logic of the method for operation
The station control process 1:C backup auto-activating device discharging condition is as follows
(1) breaker 1DL is separated manually;
(2) breaker 2DL is separated manually;
(3) breaker 3DL is separated manually;
(4) breaker 1DL is closed manually;
(5) breaker 2DL is closed manually;
(6) breaker 3DL is closed manually;
(7) C No. 1 main transformer in station or I section of bus bus differential protection action;
When any of the above-described condition meets, the station C backup auto-activating device thoroughly discharges immediately;
The station control process 2:C 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;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, C stands, and backup auto-activating device is charged to be prolonged When after complete prepared auto restart charge control, delay time t1
Control process 3: the tripping control of breaker 2DL, i.e.,
(1) station C backup auto-activating device charge control is completed;
(2) breaker 2DL is in closing position;
(3) the II section of bus no-voltage in the station C;
(4) breaker 2DL no current;
When above-mentioned condition is all satisfied, by delay time t4, starting breaker 2DL tripping control, while exporting open circuit Device 2DL tripping starting operation signal;
Control process 4: the shutting-brake control of breaker 1DL, i.e.,
Condition a.
(1) station C backup auto-activating device charge control is completed;
(2) breaker 2DL is by closing position to open position;
(3) route 1 has voltage;
(4) breaker 1DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 1DL shutting-brake control;
Condition b.
(1) breaker 2DL tripping starting operation signal;
(2) route 1 has voltage;
(3) breaker 1DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 1DL shutting-brake control.
The purpose of the present invention can also be further realized by following technical measures:
The aforementioned stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel, wherein
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 stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel, in which:
Delay time t1Take 10~20s;
Delay time t2By II sections of protection starting time settings of line electricity source are escaped, 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;
For the reliability for ensureing backup auto-activating device movement, the time difference of optical fiber transmission signal, delay time t are considered3It takes short Delay, is taken as 0.03~0.05s;
Delay time t4With delay time t2Cooperation, i.e.,
t4=t2+Δt (4)
(4) in formula, Δ t be it is differential, take 0.3~0.5s.
Delay time t5Shunt tripping time setting is lost by capacitor equipment on 110kV substation low-voltage bus bar, i.e.,
t3=tc+Δt (5)
(5) in formula, tcFor capacitor under-voltage protection start 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 the method for operation;
Fig. 2 is the station A two prepared auto restart action logic of the method for operation;
Fig. 3 is the station B one prepared auto restart action logic of the method for operation;
Fig. 4 is the station B two prepared auto restart action logic of the method for operation;
Fig. 5 is the station C one prepared auto restart action logic of the method for operation;
Fig. 6 is the station C two prepared auto restart action logic of the method for operation;
Fig. 7 is fiber optic network configuration diagram;
Fig. 8 is the power transmission and transformation network that the station C is bridge primary connection circuit figure in 110kV electric substation;
Fig. 9 is the power transmission and transformation network that the station C is 110kV electric substation sectionalized single busbar connection primary connection circuit figure;
Symbol description is as follows in Fig. 1-6:
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 delay t time exports effectively when expression condition all meets;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 8,9, C packs foot column primary connection circuit in the present invention:
(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, a 220kV substation A and one 110kV substation C (see Fig. 8 or Fig. 9), specific as follows:
(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) station A and the station the B side 110kV are equipped with automatic throw-in equipment of emergency power supply; (7) optical fiber transport channel is housed between the station A and the station B.Structure as shown in Figure 7 can be used in optical fiber transport channel: with 110kV route The optical fiber transport channel joint used;Using the point-to-point designated lane of detour;Using with communicate the multiplexing fiber-optic that shares and transmit Channel.
For above-mentioned transmission and distribution networks, the stand-by heat lines join backup power source based on source side optical-fibre channel how is realized The embodiment (by taking Fig. 1-6 as an example) of the method for the present invention is given below in investment method:
1, the method for operation one
1.1 the preparation stage
1.1.1 A stands the preparation stage
Stand for A, 4DL in combined floodgate operating status, 5DL in hot stand-by duty, the bus that detects that the station A busbar voltage is normal, B stands When voltage is normal, the backup auto-activating device charging of the station A is unsatisfactory for then thoroughly electric discharge immediately when condition.
1.1.2 B stands the preparation stage
Stand for B, 4DL in combined floodgate operating status, 5DL in hot stand-by duty, the bus that detects that the station A busbar voltage is normal, B stands When voltage is normal, the backup auto-activating device charging of the station B is unsatisfactory for then thoroughly electric discharge immediately when condition.
1.1.3 C stands the preparation stage
Stand for C, 1DL and 3DL in combined floodgate operating status, 2DL in hot stand-by duty, detect I section of busbar voltage it is normal, II When section busbar voltage is normal, the backup auto-activating device charging of the station C is unsatisfactory for then thoroughly electric discharge immediately when condition.
1.2 action process
1.2.1 the station A 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.It detects that A station backup auto-activating device charging complete, 4DL trip signal have issued, 4DL is by "on" position to separating brake, stands to B Issue 5DL combined floodgate order.Or detection A station backup auto-activating device charging complete, 4DL by "on" position arrive separating brake when, to B station sending 5DL, which closes a floodgate, to be ordered.
When the station B receives 5DL combined floodgate order, being detected simultaneously by the station B bus has voltage, 5DL in open position, and be delayed t3Afterwards Start 5DL to close a floodgate.
C station backup auto-activating device charging complete detects that C station 1DL stands I section of bus no-voltage, 1DL without electricity in open position, C After stream, be delayed t4Starting 1DL tripping afterwards.When 1DL tripping starting operation signal is issued while checking that route 2 has voltage, 2DL In open position, be delayed t5Starting 2DL closes a floodgate afterwards, and C restores to route 2 at station to power.Or the station detection C backup auto-activating device has charged There are voltage, 2DL in open position by "on" position to separating brake, C station track road 2 at, 1DL, be delayed t5After close a floodgate 2DL.At this point, C stands Restore to route 2 to power.
(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 to separating brake, standing to B issues 5DL and closes a floodgate order.
When the station B receives 5DL combined floodgate order, being detected simultaneously by the station B bus has voltage, 5DL in open position, and be delayed t3Afterwards Start 5DL to close a floodgate.
C station backup auto-activating device charging complete detects 1DL in open position, the station C I section of bus no-voltage, 1DL no current Afterwards, be delayed t4Starting 1DL tripping afterwards.When 1DL tripping starting operation signal is issued while checking that route 2 has voltage, 2DL to exist Open position, be delayed t5Starting 2DL closes a floodgate afterwards, and C restores to route 2 at station to power.Or detection C station backup auto-activating device charging complete, 1DL has voltage, 2DL in open position by "on" position to separating brake, C station track road 2, and be delayed t5After close a floodgate 2DL.At this point, the station C is restored It powers to route 2.
(3) station A bus bus differential protection action
When A stands bus bus differential protection action, 4DL tripping.Detect A station backup auto-activating device charging complete, 4DL tripping letter Number issued, 4DL is by "on" position to separating brake, standing to B issues 5DL and closes a floodgate order.Or the station detection A backup auto-activating device has charged At, 4DL by "on" position to separating brake when, standing to B issues 5DL and closes a floodgate order.
When the station B receives 5DL combined floodgate order, being detected simultaneously by the station B bus has voltage, 5DL in open position, and be delayed t3Afterwards Start 5DL to close a floodgate.
C station backup auto-activating device charging complete detects 1DL in open position, the station C I section of bus no-voltage, 1DL no current Afterwards, be delayed t4Starting 1DL tripping afterwards.When 1DL tripping starting operation signal is issued while checking that route 2 has voltage, 2DL to exist Open position, be delayed t5Starting 2DL closes a floodgate afterwards, and C restores to route 2 at station to power.Or detection C station backup auto-activating device charging complete, 1DL has voltage, 2DL in open position by "on" position to separating brake, C station track road 2, and be delayed t5After close a floodgate 2DL, C restores to line at station Road 2 powers.
(4) 4DL is separated manually
When separating 4DL manually, then the station A and the station B backup auto-activating device thoroughly discharge immediately.
1.2.2 the station B 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 and the station B backup auto-activating device thoroughly discharge immediately.
(4) 5DL is closed manually
When closing 5DL manually, then the station A and the station B backup auto-activating device thoroughly discharge immediately.
1.2.3 the station C accident, power loss, operational circumstances
(1) station C 1DL jump
When C stands, and 1DL jump occurs, detection C station backup auto-activating device charging complete, 1DL are by "on" position to separating brake, delay t5Starting 2DL closes a floodgate afterwards.
(2) No. 1 main transformer (I sections of buses) differential protection movements
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, detection C station backup auto-activating device charging complete, 1DL are by "on" position to separating brake, and be delayed t5Starting 2DL closes a floodgate afterwards.
(3) No. 2 main transformer (II section of bus) differential protection movements
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 C backup auto-activating device thoroughly discharges immediately.
(4) 1DL is separated manually
When separating 1DL manually, then the station C backup auto-activating device thoroughly discharges immediately.
(5) 3DL is separated manually
When separating 3DL manually, then the station C backup auto-activating device thoroughly discharges immediately.
(6) 2DL is closed manually
When closing 2DL manually, then the station C backup auto-activating device thoroughly discharges immediately.
2, the method for operation two
2.1 the preparation stage
2.1.1 A stands the preparation stage
Stand for A, 5DL in combined floodgate operating status, 4DL in hot stand-by duty, the bus that detects that the station A busbar voltage is normal, B stands When voltage is normal, the backup auto-activating device charging of the station A is unsatisfactory for then thoroughly electric discharge immediately when condition.
2.1.2 B stands the preparation stage
Stand for B, 5DL in combined floodgate operating status, 4DL in hot stand-by duty, the bus that detects that the station A busbar voltage is normal, B stands When voltage is normal, the backup auto-activating device charging of the station B is unsatisfactory for then thoroughly electric discharge immediately when condition.
2.1.3 C stands the preparation stage
It stands for C, 2DL and 3DL, in hot stand-by duty, detect C and standing I section of busbar voltage just in combined floodgate operating status, 1DL Often, when the II section of busbar voltage in the station C is normal, the backup auto-activating device charging of the station C is unsatisfactory for then thoroughly electric discharge immediately when condition.
2.2 action process
2.2.1 the station B 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.It detects that B station backup auto-activating device charging complete, 5DL trip signal have issued, 5DL is by "on" position to separating brake, stands to A Issue 4DL combined floodgate order.Or detection B station backup auto-activating device charging complete, 5DL by "on" position arrive separating brake when, to A station sending 4DL, which closes a floodgate, to be ordered.
When the station A receives 4DL combined floodgate order, being detected simultaneously by the station A bus has voltage, 4DL in open position, and be delayed t3Afterwards Start 4DL to close a floodgate.
C station backup auto-activating device charging complete detects 2DL in open position, the station C II sections of bus no-voltages, 2DL no current Afterwards, be delayed t4Starting 2DL tripping afterwards.When 2DL tripping starting operation signal is issued while checking that route 1 has voltage, 1DL to exist Open position, be delayed t5Starting 1DL closes a floodgate afterwards, and C restores to route 2 at station to power.Or detection C station backup auto-activating device charging complete, 2DL has voltage, 1DL in open position by "on" position to separating brake, C station track road 1, and be delayed t5After close a floodgate 1DL.At this point, the station C is restored It powers 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 to separating brake, standing to A issues 4DL and closes a floodgate order.
When the station A receives 4DL combined floodgate order, being detected simultaneously by the station A bus has voltage, 4DL in open position, and be delayed t3Afterwards Start 4DL to close a floodgate.
C station backup auto-activating device charging complete detects 2DL in open position, the station C II sections of bus no-voltages, 2DL no current Afterwards, be delayed t4Starting 2DL tripping afterwards.When 2DL tripping starting operation signal is issued while checking that route 1 has voltage, 1DL to exist Open position, be delayed t5Starting 1DL closes a floodgate afterwards, and C restores to route 1 at station to power.Or detection C station backup auto-activating device charging complete, 2DL has voltage, 1DL in open position by "on" position to separating brake, C station track road 1, and be delayed t5After close a floodgate 1DL.At this point, the station C is restored It powers to route 1.
(3) station B bus bus differential protection action
When B stands bus bus differential protection action, 5DL tripping.Detect B station backup auto-activating device charging complete, 5DL tripping letter Number issued, 5DL is by "on" position to separating brake, standing to A issues 4DL and closes a floodgate order.Or the station detection A backup auto-activating device has charged At, 5DL by "on" position to separating brake when, standing to A issues 4DL and closes a floodgate order.
When the station A receives 4DL combined floodgate order, being detected simultaneously by the station A bus has voltage, 4DL in open position, and be delayed t3Afterwards Start 4DL to close a floodgate.
C station backup auto-activating device charging complete detects 2DL in open position, the station C II sections of bus no-voltages, 2DL no current Afterwards, be delayed t4Starting 2DL tripping afterwards.When 2DL tripping starting operation signal is issued while checking that route 1 has voltage, 1DL to exist Open position, be delayed t5Starting 1DL closes a floodgate afterwards, and C restores to route 1 at station to power.Or detection C station backup auto-activating device charging complete, 2DL has voltage, 1DL in open position by "on" position to separating brake, C station track road 1, and be delayed t5After close a floodgate 1DL, C restores to line at station Road 1 powers.
(4) 5DL is separated manually
When separating 5DL manually, then the station A and the station B backup auto-activating device thoroughly discharge immediately.
2.2.2 the station A 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 and the station B backup auto-activating device thoroughly discharge immediately.
(4) 4DL is closed manually
When closing 4DL manually, then the station A and the station B backup auto-activating device thoroughly discharge immediately.
2.2.3 the station C accident, power loss, operational circumstances
(2) station C 2DL jump
When C stands, and 2DL jump occurs, detection C station backup auto-activating device charging complete, 2DL are by "on" position to separating brake, delay t5Starting 1DL closes a floodgate afterwards.
(2) No. 2 main transformer (II sections of buses) differential protection movements
C stand internal bridge when No. 2 transform er differential protections movement or II section bus differential protectings move when single-trunk segmental wiring Make, detection C station backup auto-activating device charging complete, 2DL are by "on" position to separating brake, and be delayed t5Starting 1DL closes a floodgate afterwards.
(3) No. 1 main transformer (I sections of buses) differential protection movements
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 C backup auto-activating device thoroughly discharges immediately.
(4) 2DL is separated manually
When separating 2DL manually, then the station C backup auto-activating device thoroughly discharges immediately.
(5) 3DL is separated manually
When separating 3DL manually, then the station C backup auto-activating device thoroughly discharges immediately.
(6) 1DL is closed manually
When closing 1DL manually, then the station C 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 stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel 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 station the A that stands and the station the substation B side 110kV are equipped with automatic throw-in equipment of emergency power supply;It is filled between the station substation A and the station substation B There is optical fiber transport channel;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 It is as follows:
The station 1.A backup auto-activating device has following functions
It stands in A and installs backup auto-activating device, which is connected by optical fiber transport channel with the B backup auto-activating device stood, 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 4DL, closes breaker 4DL information, hand at the station A bus bus differential protection action information manually It is dynamic to separate breaker 4DL information;
(2) analog data information: the station A bus voltage value is acquired;
1.2 transfer function
Function is acquired by the present apparatus, stands from optical fiber transport channel to B and transmits following message:
(1) transmitting switch amount data information: the location status of breaker 4DL, closes at the station A bus bus differential protection action information manually Upper breaker 4DL information separates breaker 4DL information manually;
(2) analog data information: the station A bus voltage value is transmitted;
(3) it transmits to close a floodgate to the breaker 5DL that the station B issues and order;
1.3 receive capabilities
The information at the station B: the breaker 4DL combined floodgate order that the station B issues is received by the present apparatus by optical fiber transport channel;
The station 2.B backup auto-activating device has function
It stands in B and installs backup auto-activating device, which is connected by optical fiber transport channel with the A backup auto-activating device stood, 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 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 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 is transmitted;
(3) it the other information transmitted: stands to A and issues breaker 4DL combined floodgate order;
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;
The station 3.A prepared auto restart action logic
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 is as follows:
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station B bus bus differential protection action;
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 is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL refers to breaker in operating status, i.e. breaker two sides disconnecting switch in closing position, closing position generation In closing position, breaker itself is in closing position;
(4) breaker 5DL refers to breaker in hot stand-by duty, breaker two sides disconnecting switch in open position, open position generation In closing position, breaker itself 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
Control process 3: the tripping control condition of breaker 4DL is as follows:
Condition a.
(1) station A backup auto-activating device charge control is completed;
(2) 1 protection act of power circuit;
When above-mentioned condition all meets, by delay time t2, starting breaker 4DL tripping control, while exporting breaker 4DL tripping starting operation signal;
Condition b.
(1) station A backup auto-activating device charge control is completed;
(2) station A bus differential protecting movement;
When above-mentioned condition all meets, by delay time t2, starting breaker 4DL tripping control, while exporting breaker 4DL tripping starting operation signal;
Condition c.
(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 all meets, by delay time t2, starting breaker 4DL tripping control, while exporting breaker 4DL tripping starting operation signal;
Control process 4: the control condition that breaker 5DL combined floodgate command signal issues is as follows:
Condition a.
(1) station A backup auto-activating device charge control is completed;
(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 switchs to open position by closing position;
When above-mentioned condition all meets, starting issues the control of breaker 5DL combined floodgate command signal;
Condition b.
(1) breaker 4DL tripping starting operation signal;
(2) breaker 4DL is by closing position to open position;
When above-mentioned condition all meets, starting issues the control of breaker 5DL combined floodgate command signal;
The station 3.2 A two prepared auto restart action logic of the method for operation is as follows:
The station control process 1:A backup auto-activating device discharging condition is as follows:
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station A bus bus differential protection action;
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 is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in open position;
(4) 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
Control process 3: the shutting-brake control of breaker 4DL, i.e.,
(1) station A backup auto-activating device charge control is completed;
(2) breaker 4DL combined floodgate order is received;
(3) station A bus has voltage;
(4) breaker 4DL is in open position;
When above-mentioned condition all meets, by certain delay time t1, start breaker 4DL shutting-brake control;
The station 4.B prepared auto restart action logic
The station 4.1 B one prepared auto restart action logic of the method for operation
The station control process 1:B backup auto-activating device discharging condition is as follows:
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station B bus bus differential protection action;
When any of the above-described condition meets, the station B backup auto-activating device thoroughly discharges immediately;
The station control process 2:B backup auto-activating device charge condition is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in closing position;
(4) breaker 5DL is in open position;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, B stands after the charged delay of backup auto-activating device Complete prepared auto restart charge control, delay time t1
Control process 3: the shutting-brake control of breaker 5DL, i.e.,
(1) station B backup auto-activating device charge control is completed;
(2) breaker 5DL combined floodgate order is received;
(3) station B bus has voltage;
(4) breaker 5DL is in open position;
When above-mentioned condition all meets, by delay time t1, start breaker 5DL shutting-brake control;
The station 4.2 B two prepared auto restart action logic of the method for operation is as follows:
The station control process 1:B backup auto-activating device discharging condition, i.e.,
(1) breaker 4DL is separated manually;
(2) breaker 5DL is separated manually;
(3) breaker 4DL is closed manually;
(4) breaker 5DL is closed manually;
(5) station A bus bus differential protection action;
When any of the above-described condition meets, the station B backup auto-activating device thoroughly discharges immediately;
The station control process 2:B backup auto-activating device charge condition is as follows:
(1) station A bus has voltage;
(2) station B bus has voltage;
(3) breaker 4DL is in open position;
(4) breaker 5DL is in closing position;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, B stands after the charged delay of backup auto-activating device Complete prepared auto restart charge control, delay time t1
Control process 3: the tripping control of breaker 5DL, i.e.,
Condition a.
(1) station B backup auto-activating device charge control is completed;
(2) 2 protection act of power circuit;
When above-mentioned condition all meets, by delay time t2, starting breaker 5DL tripping control, while exporting breaker 5DL tripping starting operation signal;
Condition b.
(1) station B backup auto-activating device charge control is completed;
(2) station B bus differential protecting movement;
When above-mentioned condition all meets, by delay time t2, starting breaker 5DL tripping control, while exporting breaker 5DL tripping starting operation signal;
Condition c.
(1) station B backup auto-activating device charge control is completed;
(2) station B bus no-voltage
(3) breaker 5DL no current;
When above-mentioned condition all meets, by delay time t2, starting breaker 5DL tripping control, while exporting breaker 5DL tripping starting operation signal;
Control process 4: the control condition that breaker 4DL combined floodgate command signal issues is as follows:
Condition a.
(1) station B backup auto-activating device charge control is completed;
(2) breaker 5DL is by closing position to open position;
When above-mentioned condition all meets, starting issues the control of breaker 4DL combined floodgate command signal;
Condition b.
(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 4DL combined floodgate command signal;
The station 5.C prepared auto restart action logic
The station 5.1 C one prepared auto restart action logic of the method for operation is as follows:
The station control process 1:C 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 1DL is closed manually;
(5) breaker 2DL is closed manually;
(6) breaker 3DL is closed manually;
(7) the C No. 2 main transformer differential protections in station or II section of bus bus differential protection action;
When any of the above-described condition meets, the station C backup auto-activating device thoroughly discharges immediately;
The station control process 2:C 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 closing position;
(4) breaker 2DL is in open position;
(5) breaker 3DL is in closing position;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, C stands after the charged delay of backup auto-activating device Complete prepared auto restart charge control, delay time t1
Control process 3: the tripping control of breaker 1DL, i.e.,
(1) station C backup auto-activating device charge control is completed;
(2) breaker 1DL is in closing position;
(3) the I section of bus no-voltage in the station C;
(4) breaker 1DL no current;
When above-mentioned condition is all satisfied, by delay time t4, starting breaker 1DL tripping control, while exporting breaker 1DL Trip starting operation signal;
Control process 4: the shutting-brake control of breaker 2DL, i.e.,
Condition a.
(1) station C backup auto-activating device charge control is completed;
(2) breaker 1DL is by closing position to open position;
(3) route 2 has voltage;
(4) breaker 2DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 2DL shutting-brake control;
Condition b.
(1) breaker 1DL tripping starting operation signal;
(2) route 2 has voltage;
(3) breaker 2DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 2DL shutting-brake control;
The station 5.2 C two prepared auto restart action logic of the method for operation
The station control process 1:C backup auto-activating device discharging condition is as follows
(1) breaker 1DL is separated manually;
(2) breaker 2DL is separated manually;
(3) breaker 3DL is separated manually;
(4) breaker 1DL is closed manually;
(5) breaker 2DL is closed manually;
(6) breaker 3DL is closed manually;
(7) C No. 1 main transformer in station or I section of bus bus differential protection action;
When any of the above-described condition meets, the station C backup auto-activating device thoroughly discharges immediately;
The station control process 2:C 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;
When above-mentioned all charge conditions are all satisfied and any discharging condition is unsatisfactory for, C stands after the charged delay of backup auto-activating device Complete prepared auto restart charge control, delay time t1
Control process 3: the tripping control of breaker 2DL, i.e.,
(1) station C backup auto-activating device charge control is completed;
(2) breaker 2DL is in closing position;
(3) the II section of bus no-voltage in the station C;
(4) breaker 2DL no current;
When above-mentioned condition is all satisfied, by delay time t4, starting breaker 2DL tripping control, while exporting breaker 2DL Trip starting operation signal;
Control process 4: the shutting-brake control of breaker 1DL, i.e.,
Condition a.
(1) station C backup auto-activating device charge control is completed;
(2) breaker 2DL is by closing position to open position;
(3) route 1 has voltage;
(4) breaker 1DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 1DL shutting-brake control;
Condition b.
(1) breaker 2DL tripping starting operation signal;
(2) route 1 has voltage;
(3) breaker 1DL is in open position;
When above-mentioned condition all meets, by delay time t5, start breaker 1DL shutting-brake control.
2. the stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel as described in claim 1,
It is characterized in that,
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 stand-by heat lines join in-put of spare power supply method based on source side optical-fibre channel as described in claim 1,
It is characterized in that, wherein:
Delay time t1Take 10~20s;
Delay time t2By II sections of protection starting time settings of line electricity source are escaped, 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;
For the reliability for ensureing backup auto-activating device movement, the time difference of optical fiber transmission signal, delay time t are considered3Short delay is taken, It is taken as 0.03~0.05s;
Delay time t4With delay time t2Cooperation, i.e.,
t4=t2+Δt(4)
(4) in formula, Δ t be it is differential, take 0.3~0.5s.
Delay time t5Shunt tripping time setting is lost by capacitor equipment on 110kV substation low-voltage bus bar, i.e.,
t3=tc+Δt(5)
(5) in formula, tcFor capacitor under-voltage protection start the time, Δ t be it is differential, take 0.3~0.5s.
CN201910287916.2A 2019-04-11 2019-04-11 Hot standby circuit combined standby power supply switching method based on power supply side optical fiber channel Active CN109950915B (en)

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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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CN110912093A (en) * 2019-12-09 2020-03-24 国网江苏省电力有限公司镇江供电分公司 Disconnection relay protection method for measuring matching of load side bus line voltage and spare power automatic switching

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