CN104167808B - 220kV spare power automatic switching method - Google Patents
220kV spare power automatic switching method Download PDFInfo
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- CN104167808B CN104167808B CN201410404892.1A CN201410404892A CN104167808B CN 104167808 B CN104167808 B CN 104167808B CN 201410404892 A CN201410404892 A CN 201410404892A CN 104167808 B CN104167808 B CN 104167808B
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Abstract
The invention discloses a kind of 220kV spare power automatic switching method, including: according to operation of power networks parameter and default setting valve, it is judged that whether spare power meets circuit is hauled oneself willingly into charge condition or mother hauls oneself willingly into charge condition；If meeting circuit to haul oneself willingly into charge condition, after described backup auto-activating device is charged, judge whether described backup auto-activating device meets circuit and haul oneself willingly into entry condition, if meeting, start described backup auto-activating device, described backup auto-activating device sends the main order for line switching of tripping after default circuit hauls oneself willingly into time delay, and detect whether main confession line switching is in a point position in default circuit hauls oneself willingly into wait time delay, if, priority order from high to low is thrown by the line section preset is standby, detect each standby line section of throwing and switch the most satisfied standby throwing condition, if meeting, Guan Bi meets the standby throwing line section switch of prepared auto restart condition the most successively.The method implementing the present invention, is applicable to the transformer station of available for different connection modes.
Description
Technical field
The present invention relates to technical field of electric power, particularly relate to a kind of 220kV spare power automatic switching method.
Background technology
Along with the continuous lifting of south electric network transferring electricity from the west to the east capacity, power supply and the high speed development of power grid construction in electrical network, electricity
The short circuit current problem of net is increasingly serious, and the short circuit current at load center area 220kV and above transformer station significantly exceeds standard.For
Effective reduction short circuit current, Optimal Power Flow is distributed, it has to the power supply mode of subregion of taking in increasing region to unlink,
Although realizing switched-mode power supply by modes such as substation bus bar fanout operation, interconnection stand-by heats can be effectively reduced associated station
The short circuit current problem of point, but reduce the power supply reliability of website, bring risk in various degree to operation of power networks.For
Solution the problems referred to above, electrical network configures backup auto-activating device at major network, improving the power supply reliability of subregion website.In recent years
Coming, the major network of more than 220kV has installed substantial amounts of backup auto-activating device, and these backup auto-activating devices play important guarantor and power work
With.
But, for improving power supply reliability, the 220kV transformer station of part electrical network have employed the mother of the double female double segmentations of 220kV
Line connection type, but existing 220kV spare power automatic switching method is only applicable to the connection type of 220kV double-bus, it is impossible to double to 220kV
The electrical network of the bus connection type of female double segmentation carries out prepared auto restart, can reduce the reliability that electrical network is powered.
Summary of the invention
Based on this, it is necessary to for above-mentioned 220kV spare power automatic switching method, it is impossible to the bus wiring of female double segmentations double to 220kV
The electrical network of form carries out prepared auto restart, the problem that can reduce the reliability that electrical network is powered, it is provided that a kind of 220kV spare power automatic switching method.
A kind of 220kV spare power automatic switching method, comprises the following steps:
According to operation of power networks parameter and default setting valve, it is judged that whether spare power meets circuit is hauled oneself willingly into charge condition or mother
Charge condition hauled oneself willingly into by connection；
If meeting circuit to haul oneself willingly into charge condition, after described backup auto-activating device is charged, it is judged that whether described backup auto-activating device
Meeting circuit and haul oneself willingly into entry condition, if meeting, starting described backup auto-activating device, described backup auto-activating device is hauled oneself willingly at default circuit
Send the main order for line switching of tripping after time delay, and detect main for line switching in default circuit hauls oneself willingly into wait time delay
Whether it is in a point position, if so, throws priority order from high to low by the line section preset is standby, detect each for throwing line section
The most satisfied standby throwing condition of switch, if meeting, Guan Bi meets the standby throwing line section switch of prepared auto restart condition the most successively, until standby
Haul oneself willingly into successfully or throw priority standby to all default line sections has all judged the failure of rear prepared auto restart；
If meeting mother to haul oneself willingly into charge condition, after described backup auto-activating device is charged, it is judged that whether described backup auto-activating device
Meeting mother and haul oneself willingly into entry condition, if meeting, starting described backup auto-activating device, it is judged that described backup auto-activating device is for circuit by main
Tripping causes bus loss of pressure still to be caused bus loss of pressure by bus connection switch tripping, if being caused bus to lose by main for circuit tripping
Pressure, then send the main order for line switching of tripping after default mother hauls oneself willingly into time delay, and haul oneself willingly into wait in default mother
Whether in time delay, detection is main is in a point position for line switching, if so, throws priority order from high to low by the switch preset is standby,
Detect each the most satisfied standby throwing condition of standby throwing bus connection switch, if meeting Guan Bi successively to meet opening for throwing mother of prepared auto restart condition
Close, until prepared auto restart success or throw priority standby to all default switches have all judged the failure of rear prepared auto restart；
If being caused bus loss of pressure by bus connection switch tripping, then throw priority from high to low suitable by the switch preset is standby
Sequence, detecting each for throwing the most satisfied standby throwing condition of bus connection switch, closing, if meeting, the standby throwing mother meeting prepared auto restart condition successively
Switch, until prepared auto restart success or throw priority standby to all default switches have all judged the failure of rear prepared auto restart；
According to operation of power networks parameter and default setting valve, it is judged that whether spare power meets circuit is hauled oneself willingly into charge condition or mother
Connection is hauled oneself willingly into the mode of charge condition and is specifically included: presets N respectively for circuit backup power automatic switching function and returns the line section of 220kV circuit
Throw priority standby with line section, and preset the standby throwing of switch of M 220kV bus connection switch preferentially according to mother backup power automatic switching function
Level, N more than or equal to 2 and less than or equal to 10, M more than or equal to 0 and less than or equal to 4, line section is set to 0,1,
2 ... x, 0 represent be not involved in circuit backup power automatic switching logic, x more than or wait 2 and be less than or equal to 8,1 to x represents that 220kV circuit divides
Other places, in different line sections, judge main for circuit, line section, the main operation shape for circuit according to the operational factor of electrical network
Condition and the operating condition of bus connection switch；
The operating condition of 220kV circuit, the operating condition of bus, M 220kV bus connection switch is returned by detecting described N
Operating condition and the default setting valve of line section, it is judged that whether present apparatus meets circuit is hauled oneself willingly into charge condition and mother is hauled oneself willingly into
Charge condition.
Above-mentioned 220kV spare power automatic switching method, presets N respectively for circuit backup power automatic switching function and returns the line section of 220kV circuit
With standby priority of throwing, and preset the standby throwing priority of M 220kV bus connection switch according to mother backup power automatic switching function, and then carry out
Prepared auto restart so that the present invention can be suitably used for including the transformer station of the available for different connection modes of the double female double section wirings of 220kV, can improve
The motility of spare power automatic switching method and subject range.
Accompanying drawing explanation
The bus wiring diagram (double points of double bypasses of band of double mothers) that Tu1Shi 220kV transformer station 220kV side is double female double points；
Fig. 2 is the schematic flow sheet of 220kV spare power automatic switching method the first embodiment of the present invention；
Fig. 3 is the schematic flow sheet of 220kV spare power automatic switching method the second embodiment of the present invention；
Fig. 4 is the schematic flow sheet of 220kV spare power automatic switching method the 3rd embodiment of the present invention；
Fig. 5 is the logical sequence schematic diagram of prepared auto restart in 220kV spare power automatic switching method embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
For taking the 220kV transformer station of subregion measure, its 220kV side Main connection form is different, and conventional having is double
The double segmentation band pair of bus belt bypass, double-bus, bus single-subsection and double-bus bypasses, (it simplifies wiring to double section wiring
Schematic diagram is as shown in Figure 1) etc. various forms, under various Main connection forms, the main power supply of its 220kV bus is generally individually this
The 220kV circuit stood.
Accordingly, it is contemplated that design provides a kind of 220kV transformer substation spare power automatic switching method, it goes for 220kV and becomes
The various connection type in 220kV side in power station, and can be right as the wider standardization spare power automatic switching method of a kind of range of application
In actual motion, the various possible methods of operation all can play a role, and improves the reliability that electrical network is powered.
Refer to the schematic flow sheet that Fig. 2, Fig. 2 are 220kV spare power automatic switching method first embodiments of the present invention.
The described 220kV spare power automatic switching method of present embodiment comprises the following steps:
Step S101, according to operation of power networks parameter and default setting valve, it is judged that whether spare power meets circuit is hauled oneself willingly into and fill
Electricity condition or mother haul oneself willingly into charge condition, if meeting circuit to haul oneself willingly into charge condition, entering step S102, hauling oneself willingly into if meeting mother
Condition enters step S103.
Step S102, charges to described backup auto-activating device, and judges whether described backup auto-activating device meets circuit and haul oneself willingly into and open
Dynamic condition, if meeting, enters step S104.
Step S103, charges to described backup auto-activating device, and judges whether described backup auto-activating device meets mother and haul oneself willingly into and open
Dynamic condition, if meeting, enters step S105.
Step S104, starts described backup auto-activating device, and described backup auto-activating device sends after default circuit hauls oneself willingly into time delay
The main order for line switching of tripping, and detect in default circuit hauls oneself willingly into wait time delay and main whether be in point for line switching
Position, if then entering step S106.
Step S105, starts described backup auto-activating device, it is judged that described backup auto-activating device is to be caused mother by main for circuit tripping
Line decompression is still caused bus loss of pressure by bus connection switch tripping, if being caused bus loss of pressure by main for circuit tripping, then enters step
Rapid S107, if being caused bus loss of pressure by bus connection switch tripping, then enters step S108.
Step S106, throws priority order from high to low by the line section preset is standby, detects each for throwing line section
Whether switch meets standby throwing condition, if meeting, enters step S109.
Step S107, sends the main order for line switching of tripping after default mother hauls oneself willingly into time delay, and default
Mother hauls oneself willingly into whether the interior detection of wait time delay is main is in a point position for line switching, if then entering step S108.
Whether step S108, by default switch standby throwing priority order from high to low, detect each standby throwing bus connection switch
Meeting standby throwing condition, if meeting, then entering step S110.
Step S109, Guan Bi meets the standby of prepared auto restart condition and throws line section switch successively, until prepared auto restart success or
Throw priority standby to all default line sections has all judged the failure of rear prepared auto restart.
Step S110, Guan Bi meets the standby of prepared auto restart condition and throws bus connection switch successively, until prepared auto restart success or to institute
The standby priority of throwing of default switch is had all to judge the failure of rear prepared auto restart.
Further, according to operation of power networks parameter and default setting valve in step S101, it is judged that whether spare power meets
Circuit hauls oneself willingly into charge condition or mother is hauled oneself willingly into the mode of charge condition and specifically included: preset N respectively for circuit backup power automatic switching function
Return line section and the line section standby throwing priority of 220kV circuit, and preset M 220kV according to mother backup power automatic switching function
The switch of bus connection switch is standby throws priority, and N is more than or equal to 2 and less than or equal to 10, and M is more than or equal to 0 and is less than or equal to
4, line section is set to 0,1,2 ... x, 0 represents and is not involved in circuit backup power automatic switching logic, x more than or etc. 2 and be less than or equal to
8,1 to x represent that 220kV circuit is respectively at different line sections, judge main for circuit, circuit according to the operational factor of electrical network
Section, the main operation conditions for circuit and the operating condition of bus connection switch；
The operating condition of 220kV circuit, the operating condition of bus, M 220kV bus connection switch is returned by detecting described N
Operating condition and the default setting valve of line section, it is judged that whether present apparatus meets circuit is hauled oneself willingly into charge condition and mother is hauled oneself willingly into
Charge condition.
Present embodiment, presets N respectively for circuit backup power automatic switching function and returns the line section of 220kV circuit with standby throwing preferentially
Level, and the standby throwing priority of M 220kV bus connection switch is preset according to mother backup power automatic switching function, and then carry out prepared auto restart, full
Under the different types of prepared auto restart charge condition of foot, perform different prepared auto restart modes, strong adaptability, be configured in routine
In 220kV power transformation website, the method can be applicable to the conventional 220kV transformer station being not more than 10 times 220kV circuits, is applicable to each
Plant the method for operation flexibly, solve conventional backup auto-activating device and be limited by the defect of website and the method for operation, for actual motion
In the various possible method of operation all can play a role so that the present invention can be suitably used for including the double female double section wirings of 220kV
The transformer station of the available for different connection modes of the double bypass of band, can improve motility and the subject range of spare power automatic switching method.
Wherein, for step S101, it is preferable that a line section is the circuit belonging to same group, and line section is standby
Throwing priority and can adjusting is 0,1,2,3,4,5,6,7 or 8.Wherein, " 0 " represents that this section is not involved in standby throwing；Standby throwing priority is whole
Fixed identical line section when all meeting standby throwing condition, then should put into simultaneously；If the standby standby throwing of line section throwing line section
Priority is set to " 1 " and " 2 ", then preferential input standby throws the line section that priority is " 1 ", if unsuccessful put into the most again standby
Throw the line section that priority is " 2 ", the like, the standby priority of throwing of the line section of all line sections is all set to same
Non-" 0 " digital fashion is put and should be alerted, and adjusts unsuccessfully, blocking device.
Preferably, 220kV circuit can be divided into main for state, standby throwing state, inspecting state and throwing state off guard；Wherein, standby
Throwing state is only effective in circuit backup power automatic switching function, and main confession state, inspecting state and throwing state off guard are at circuit, mother prepared auto restart
In function the most effective.220kV bus connection switch can be divided into running status, inspecting state, standby throwing state and throwing state off guard.
Further, the maintenance pressing plate of line maintenance mark circuit puts into, it determines for the circuit of inspecting state, its open into
Amount, electric parameters are all not involved in the logic of prepared auto restart and abnormal judgement.Circuit bid off guard knowledge is unsatisfactory for main confession, for throwing or maintenance shape
The circuit of state.The standby circuit submitting a tender knowledge section composition of line section has standby circuit and the dereliction thrown for circuit.Mother runs mark mother
Connection switch maintenance pressing plate exits and bus connection switch is closing position.Mother maintenance mark bus connection switch maintenance pressing plate puts into.Mother is off guard
Knowledge bus connection switch of submitting a tender is unsatisfactory for running, overhauling, for throwing state.
Further, detect that then meeting circuit when following condition is satisfied by hauls oneself willingly into charge condition, entrance charged state:
Backup power automatic switching function pressing plate is in the state of input；The bus of non-inspecting state has pressure；The mother of non-inspecting state is closing position；At least one
Individual standby throwing section；The most main for circuit.
Then meet mother when detecting and meet following condition and haul oneself willingly into charge condition, entrance charged state: backup power automatic switching function pressure
Plate is in the state of input；At least two bus connection switches divide position or maintenance；An at least standby bus connection switch thrown.
In one embodiment: when meeting following condition at the same time, it is determined that 220kV circuit is main for circuit: the inspection of circuit
Repair pressing plate and exit state；Line switching is closing position；After circuit switching, voltage has for presetting element more than or equal to U1, described U1
Compression set value；It it is non-load terminated line under circuit backup power automatic switching decision condition；
When meeting following condition at the same time, it is determined that 220kV circuit is standby throwing circuit: the maintenance pressing plate of circuit is exiting shape
State；Line switching is in a point position；After circuit switching, voltage is more than or equal to U1；Circuit PT measures voltage more than or equal to U1；Circuit
The standby priority of throwing of affiliated section is not 0, and described U1 has compression set value for presetting element.
Further, when meeting following condition at the same time, it is determined that the line section of 220kV circuit is standby line section of throwing:
Line section is the most main for circuit in combining；The most once for throwing circuit in line section combination；Line section is standby to be thrown preferentially
Level is not 0.
Wherein, after circuit backup power automatic switching function throws priority orders by line section of adjusting is standby, can be according to the actual work of system
Condition automatic discrimination goes out main for throwing circuit with standby, and enters charged state.For circuit backup power automatic switching logic, use main for line tripping
By the standby closing in sequence extension wire section throwing priority of line section of adjusting after causing bus loss of pressure.
Preferably, voltage >=U1 after circuit switching, represent that this side bus disconnecting link is closing position；Circuit PT measures voltage >=U1,
Represent that offside switch closes position and active.
In another embodiment, when meeting following condition at the same time, it is determined that 220kV bus connection switch is opened for standby mother of throwing
Close: the maintenance pressing plate of bus connection switch is exiting state；Bus connection switch is in a point position；The bus of bus connection switch both sides all has pressure and non-inspection
Repair；The switch the preset standby throwing priority of bus connection switch is non-zero.
For step S102, after charging complete, enter circuit and haul oneself willingly into logic.
In one embodiment, when meeting following five conditions at the same time and continue for presetting the charging of circuit automatic bus
Between, it is determined that complete the charging process of circuit backup power automatic switching function: backup power automatic switching function pressing plate is in the state of input；The bus of non-inspecting state
There is pressure；The mother of non-inspecting state is closing position；An at least standby throwing line section；The most main for circuit.
Further, when meeting following two conditions at the same time and continue for presetting the circuit automatic bus startup time, sentence
Surely meet circuit and haul oneself willingly into entry condition: the busbar voltage of all operations is voltage starting decision content less than U2, U2；All main for line
Lu Junwu flows.
For step S103, after charging complete, enter bus and haul oneself willingly into logic.
In one embodiment, meet following three condition at the same time and continue for presetting the mother automatic bus charging interval
Time, it is determined that complete the charging process of mother backup power automatic switching function: backup power automatic switching function pressing plate is in the state of input；At least two mothers are opened
Close point position or a maintenance；An at least standby throwing bus connection switch.
Further, if bus is supplied line powering by main, meet following two conditions at the same time and continue for presetting circuit
When automatic bus starts the time, it is determined that meet mother and haul oneself willingly into entry condition: standby bus connection switch one side bus voltage of throwing is less than U2, and
Standby bus connection switch opposite side busbar voltage of throwing is more than U2；There is main confession circuit without stream, and after its switching, voltage is voltage less than U2, U2
Start decision content.
Further, if bus is powered by segmentation or mother, meet following two conditions at the same time and continue for presetting
When circuit automatic bus starts the time, it is determined that meet mother and haul oneself willingly into entry condition: standby bus connection switch one side bus voltage of throwing is less than
U2, and be voltage starting decision content for throwing bus connection switch opposite side busbar voltage more than U2, U2；There is the mother of decompression bus side
Switch tripping.
For step S104, default circuit is hauled oneself willingly into time delay and is preferably 0.2s, and it is main for circuit that default circuit hauls oneself willingly into wait
The time delay of tripping is preferably 1s.
For step S105, it is judged that bus loss of pressure cause reason, spare power automatic switching method can be applicable to double female double points of 220kV
Bus connection type.
For step S106, standby line section of throwing switchs the line switching that the line section for being in standby throwing is corresponding, detection
Each standby line section of throwing switchs the most satisfied standby throwing condition, may preferably be the circuit in respective lines section priority and is starting
Whether front 5s is in standby throwing state.
For step S107, default mother is hauled oneself willingly into time delay and is preferably 0.2s, and it is main for circuit that default mother hauls oneself willingly into wait
The time delay of tripping is preferably 1s.
For step S108, detect whether each standby throwing bus connection switch meets standby throwing condition, may preferably be in respective switch
Whether the standby switch 5s before activation of priority that throws is in standby throwing state.
For step S109, after the corresponding standby throwing line section switch of Guan Bi, if decompression bus within the default detection time
Voltage recovers, then prepared auto restart success, if decompression busbar voltage is not recovered within the default detection time, then priority adds 1, continues
Perform this step.
In one embodiment, throw priority order from high to low by the line section preset is standby, detect each for throwing line
The most satisfied standby throwing condition of road section switch, if meeting, Guan Bi meets the standby throwing line section switch of prepared auto restart condition the most successively,
Until prepared auto restart success or throw priority standby to all default line sections have all judged the step that rear prepared auto restart is failed
Further comprising the steps of:
The maximum standby number of times of throwing of order is the standby standby maximum throwing priority of line section throwing line section.
It is examined in the standby standby line section of throwing throwing priority of each line section and switchs whether 5s before activation meets standby throwing
Condition.
If so, when transformer station is with small power supply, being excised by small power supply, after presetting time delay, Guan Bi is standby throws line section
Switch；When transformer station is without small power supply, directly Guan Bi is standby throws line section switch.
If detecting in default dynamic time, decompression busbar voltage is recovered, then put on record and haul oneself willingly into successfully.
For step S110, after the corresponding standby throwing mother line switching of Guan Bi, if decompression bus within the default detection time
Voltage recovers, then prepared auto restart success, if decompression busbar voltage is not recovered within the default detection time, then priority adds 1, continues
Perform this step.
In one embodiment, throw priority order from high to low by the switch preset is standby, detect each standby mother of throwing and open
Close and whether meet standby throwing condition, if satisfied Guan Bi successively meets the standby of prepared auto restart condition throws bus connection switch, until prepared auto restart success
Or throw priority standby to all default switches have all judged that the failed step of rear prepared auto restart is further comprising the steps of:
The maximum standby number of times of throwing of order is the standby standby maximum throwing priority of switch throwing bus connection switch.
It is examined in whether the standby standby bus connection switch 5s before activation of throwing throwing priority of each switch meets standby throwing condition.
The most then when decompression bus need to excise small power supply, the small power supply circuit of excision decompression bus, after presetting time delay
Guan Bi is standby throws bus connection switch, and when decompression bus is without excising small power supply, directly Guan Bi is standby throws bus connection switch.
If the voltage of decompression bus recovers in default dynamic time, then put on record and haul oneself willingly into successfully.
Refer to the schematic flow sheet that Fig. 3, Fig. 3 are 220kV spare power automatic switching method second embodiments of the present invention.
Step S301, meets charge condition through Tc1After time delay, backup auto-activating device charging complete.
Step S302, meets circuit and hauls oneself willingly into entry condition through Tq1After time delay, backup auto-activating device starts, and outlet tripping is main for line
Way switch.
Step S303, at TT1In time, when detecting that all main switches for circuit are in point position, execution step
S304, otherwise backup auto-activating device electric discharge, puts on record and hauls oneself willingly into failure.
Step 304, initial standby priority n of throwing of order is 1, and the maximum standby number of times M of throwing of order is the standby line section throwing line section
The standby maximum throwing priority.
Step S305, checks that the standby line section of throwing of current priority n switchs whether 5s before activation meets standby throwing condition,
It is then to perform step 306, otherwise, performs step S310.
Step S306, checks whether with cutting small power supply and load, if there being execution step S307, if without performing step
S308。
Step S307, backup auto-activating device is directly exported to be excised small power supply, through Tt1After time delay, perform step S308.
Step S308, Guan Bi is standby throws line section switch.
Step S309, at Th1Detect in time whether decompression busbar voltage is recovered, if recovering, then put on record and haul oneself willingly into successfully,
If otherwise performing step S310.
Step S310, makes n=n+1, if n≤M, then returns step S305, if n is ＞ M, then puts on record and haul oneself willingly into failure.
Present embodiment, for the operating process of circuit backup power automatic switching function in 220kV circuit backup power automatic switching method.
In one embodiment, public discharging condition includes: device startup is jumped main after supplying line switching, if TTInspection in time delay
Do not detect the corresponding main point position state for switch, report switch failure, then device should discharge at once, needs hand resetting；Device action
Should discharge at once after success or failure, need hand resetting；(sentence HWJ abnormal the most own should have 5s time delay) device after HWJ abnormality alarming
Should discharge at once, just can reopen after blackout and hand resetting；Device is in non-started state and switch maintenance pressing plate
When exiting, if the hands receiving line switching correspondence interval jumps signal, device should discharge at once；Receive female poor, malfunctioning and its
During his outside block signal, device should discharge at once；When backup power automatic switching function pressing plate exits, device should discharge at once.
In another embodiment, the discharging condition under circuit backup power automatic switching mode is included in circuit backup power automatic switching charging modes
Under, should discharge when device detects situations below；Meet above-mentioned public discharging condition for the moment；All main for line maintenance pressure
When plate all puts into, device should discharge at once；When causing circuit backup power automatic switching charge condition to be unsatisfactory for due to standby throwing line status change,
Time delay 5s discharges.
In other embodiments, situations below device should keep charged state, should not discharge:
Under the standby charging modes thrown of circuit, if not maintenance bus connection switch becomes a point position, device does not discharges, but should send announcement
Alert signal；Main all trip for circuit after, if busbar voltage is not down to below initiation value, device should not discharge, must always etc.
Treating, during until busbar voltage drops to below initiation value, device row again starts.
Refer to the schematic flow sheet that Fig. 4, Fig. 4 are 220kV spare power automatic switching method the 3rd embodiments of the present invention.
Step S401, meets charge condition through Tc2After time delay, backup auto-activating device charging complete；
Step S402, meets circuit and hauls oneself willingly into entry condition through Tq2After time delay, backup auto-activating device starts.
Step S403, it is judged that current decompression bus is to be caused for line tripping by main or jumped by segmentation or bus connection switch
Opening, if being caused for line tripping by main, performing step S404, if then being performed step S405 by segmentation or bus connection switch tripping.
Step S404, main for line switching with or without stream of institute, execution step S406 on outlet tripping non-maintenance decompression bus.
Step S405, it may be judged whether with or without pressure without Flow Line, if not without pressure without Flow Line, then performs step S407.If
With or without pressure without Flow Line, tripping without pressure without Flow Line, it determines switch whether tripping, if switch failure, device electric discharge, put throwing on record
Failure.
Step S406, at TT2In time, when detecting that the corresponding main switch for circuit without stream is in point position, execution
Step S407, otherwise, device discharges, and puts on record and hauls oneself willingly into failure.
Step S407, initial standby throwing priority n of order is 1, and the maximum standby number of times M of throwing of order is to throw preferentially for the switch throwing switch is standby
Level maximum.
Step S408, checks whether the standby bus connection switch 5s before activation of throwing of current priority n meets standby throwing condition, if
It is then to perform step S409, otherwise, perform step S413；
Step S409, checks whether with cutting small power supply and load, if there being execution step S410, if without performing step
S413。
Step S410, backup auto-activating device is directly exported to be excised the small power supply of decompression bus, through Tt2After time delay, perform step
S411。
Step S411, closes bus connection switch.
Step S412, at Th2Detect in time whether decompression busbar voltage is recovered, if recovering, then put on record and haul oneself willingly into successfully,
Perform step S310 if not.
Step S413, makes n=n+1, if n≤M, then returns step S408, if n is ＞ M, then puts on record and haul oneself willingly into failure.
Present embodiment, for the operating process of mother backup power automatic switching function in 220kV circuit backup power automatic switching method.
Preferably, the treatment principle that in the case of two sections of bus loss of pressure, mother is hauled oneself willingly into is for closing any one when meeting and hauling oneself willingly into condition
After individual switch, only just can close, after this switch closes success or failure, the switch that residue can be thrown.
In one embodiment, when this mother or block switch close position by 1 to 0, if this disconnected bus exists small power supply, female
Line voltage can not reduce immediately, and this signal is always maintained at, until this switch become close position or receive this hands jumper connection point open into or
Maintenance pressing plate puts into or meets mother discharging condition.When mother or block switch close position by 1 to 0 displacement marking signal be 1
In the case of, switch can not be judged to throw switch.When, after the hands jumper connection point receiving mother or segmentation, the displacement of respective switch keeps letter
Number reset, simultaneously device electric discharge.
In another embodiment, the discharging condition under mother prepared auto restart mode include meeting above-mentioned public discharging condition it
For the moment；When causing mother prepared auto restart charge condition to be unsatisfactory for due to the change of bus connection switch state, time delay 5s discharges；Due to bus PT
When three-phase broken string (sentence PT broken string itself and should have 5s time delay) causes mother prepared auto restart charge condition to be unsatisfactory for, discharge at once；Because of mother
When single-phase the or biphase broken string of line PT causes mother prepared auto restart charge condition to be unsatisfactory for, device does not discharges, and carries out with perfecting phase voltage
Differentiate；Device is in non-started state and bus connection switch maintenance pressing plate when exiting, if the hands receiving this switch jumps signal, and device
Should discharge at once, blackout automatic resetting.
Fig. 5 show the logical sequence schematic diagram of prepared auto restart in 220kV spare power automatic switching method embodiment of the present invention.
The present invention program has also fully taken into account the impact of time delay, sets corresponding time delay definite value, including: the line preset
Charging time delay (default circuit hauls oneself willingly into time delay) T is hauled oneself willingly on roadC1, preset mother haul oneself willingly into charging time delay (default mother is hauled oneself willingly into and is prolonged
Time) TC2, the circuit preset haul oneself willingly into start-up study (default circuit haul oneself willingly into wait time delay) Tq1, the mother preset hauls oneself willingly into startup and prolongs
Time (default mother haul oneself willingly into wait time delay) Tq2, preset circuit haul oneself willingly into switch trip wait time delay TT1, preset mother haul oneself willingly into
Switch trip waits time delay TT2, preset circuit haul oneself willingly into small power supply line tripping wait time delay Tt1, preset mother haul oneself willingly into little electricity
Source line tripping waits time delay Tt2, preset circuit haul oneself willingly into detection busbar voltage recover wait time delay Th1, preset mother haul oneself willingly into detection
Busbar voltage is recovered to wait time delay Th2。
Shown in Figure 5, the logical sequence schematic diagram of prepared auto restart in 220kV spare power automatic switching method embodiment.
As seen from Figure 5, after reaching entry condition, through presetting circuit or mother automatic bus start-up study TqTime
Afterwards, device starts, and then analyzes and judges whether to need tripping without flowing and supplying circuit without the main of pressure；The most then tripping correspondence master
For line switching, and haul oneself willingly into switch trip wait time delay T at default circuitTTime in confirm main for line switching the most certain
Tripping, if at TTTime in be not detected by corresponding main for line switching tripping, the most directly judge prepared auto restart failure, if at TT's
Detect in time, then analyze and judge whether to need to cut small power supply, if it is corresponding main for line switching, the most directly to need not tripping
Analysis judges whether to need to cut small power supply；If small power supply need to be excised, then device will directly excise element and wait default circuit certainly
Throw small power supply tripping operation and wait time delay Tt；If without excising small power supply, then device is directly entered next step.It follows that device outlet
Close standby section circuit or the bus connection switch thrown, and waits time delay T at default switch combined floodgate of hauling oneself willingly intohTime in detection decompression bus
Whether there is pressure, the most then prepared auto restart success.
Concrete alarming processing such as table 1 when exception below occurring under device is at non-started state, under different standby throwing modes
Shown in mark table 2.
All kinds of warning signals under table 1 circuit backup power automatic switching mode are detailed:
All kinds of warning signals under table 2 mother prepared auto restart mode are detailed:
The following stated is 220kV circuit other generation to process logic.
Our station configures twice 220kV bypasses, and is every time 220kV inlet wire configuration Bypass Switching function.And by " 220 is other
In road 01 other generation, sets definite value " and " 220 bypass 02 setting of other generation definite value " circuit of adjusting can be by that Bypass Switching, bit0-
The bypass definition on the corresponding 10 loop line roads of bit9, it is 1 to be to allow by this Bypass Switching that corresponding bit adjusts, and adjusting is 0 not allow by this
Lu Dailu, if during none-disk terminal, fixed value adjusting is 0, and exits corresponding Bypass Switching pressing plate, bypasses current Bypass Switching function and adopts
Processing with simplification, 220kV inlet wire puts into corresponding other for pressing plate, then electric parameters and the switching value of this inlet wire all uses bypass electric parameters
Differentiate with switching value；When 220kV inlet wire exits for pressing plate by correspondence, then this inlet wire this line electric parameters and switching value is used to enter
Row differentiates.When the side of same bypass puts into for pressing plate is multiple simultaneously, device is reported to the police, and warning message is " how other for pressing plate report
Alert ".
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a 220kV spare power automatic switching method, it is characterised in that comprise the following steps:
According to operation of power networks parameter and default setting valve, it is judged that whether backup auto-activating device meets circuit is hauled oneself willingly into charge condition or mother
Haul oneself willingly into charge condition；
If meeting circuit to haul oneself willingly into charge condition, after described backup auto-activating device is charged, it is judged that whether described backup auto-activating device meets
Circuit hauls oneself willingly into entry condition, if meeting, starts described backup auto-activating device, and described backup auto-activating device hauls oneself willingly into time delay at default circuit
The order of rear transmission tripping main confession line switching, and in default circuit hauls oneself willingly into wait time delay, whether detect main confession line switching
It is in a point position, if so, throws priority order from high to low by the line section preset is standby, detect each for throwing line section switch
The most satisfied standby throwing condition, if meeting, Guan Bi meets the standby throwing line section switch of prepared auto restart condition the most successively, until prepared auto restart
Success or throw priority standby to all default line sections have all judged the failure of rear prepared auto restart；
If meeting mother to haul oneself willingly into charge condition, after described backup auto-activating device is charged, it is judged that whether described backup auto-activating device meets
Mother hauls oneself willingly into entry condition, if meeting, starts described backup auto-activating device, it is judged that described backup auto-activating device is for circuit tripping by main
Bus loss of pressure is caused still to be caused bus loss of pressure by bus connection switch tripping, if being caused bus loss of pressure, then by main for circuit tripping
The main order for line switching of tripping is sent after default mother hauls oneself willingly into time delay, and in default mother hauls oneself willingly into wait time delay
Detecting and main whether be in a point position for line switching, if so, by the standby priority order from high to low of throwing of the switch preset, detection is respectively
For throwing the most satisfied standby throwing condition of bus connection switch, close, if meeting, the standby throwing bus connection switch meeting prepared auto restart condition successively, until
Prepared auto restart success or throw priority standby to all default switches have all judged the failure of rear prepared auto restart；
If being caused bus loss of pressure by bus connection switch tripping, then by the standby priority order from high to low of throwing of the switch preset, inspection
Survey each for throwing the most satisfied standby throwing condition of bus connection switch, close, if satisfied, the standby throwing bus connection switch meeting prepared auto restart condition successively,
Until prepared auto restart success or throw priority standby to all default switches have all judged the failure of rear prepared auto restart；
According to operation of power networks parameter and default setting valve, it is judged that whether backup auto-activating device meets circuit is hauled oneself willingly into charge condition or mother
The mode hauling oneself willingly into charge condition specifically includes: for circuit backup power automatic switching function preset respectively N return the line section of 220kV circuit with
The standby priority of throwing of line section, and preset the standby throwing of switch of M 220kV bus connection switch preferentially according to mother backup power automatic switching function
Level, N more than or equal to 2 and less than or equal to 10, M more than or equal to 0 and less than or equal to 4, line section is set to 0,
1 ... x, 0 expression is not involved in circuit backup power automatic switching logic, and x is more than or equal to 2 and less than or equal to 8, and 1 to x represents 220kV line
Road is respectively at different line sections, judges main for circuit, line section, the main fortune for circuit according to the operational factor of electrical network
Row situation and the operating condition of bus connection switch；
The operating condition of 220kV circuit, the operating condition of bus, the operation of M 220kV bus connection switch is returned by detecting described N
Operating mode and the default setting valve of line section, it is judged that whether present apparatus meets circuit is hauled oneself willingly into charge condition and mother hauls oneself willingly into charging
Condition；
When meeting following three condition at the same time and continue for presetting the mother automatic bus charging interval, it is determined that complete mother standby certainly
Throw the charging process of function: backup power automatic switching function pressing plate is in the state of input；At least two bus connection switches divide position or maintenance；At least
One standby throwing bus connection switch；
If bus is supplied line powering by main, when meeting following two conditions at the same time and continue for presetting the startup of circuit automatic bus
Between time, it is determined that meet mother and haul oneself willingly into entry condition: standby bus connection switch one side bus voltage of throwing is less than U2, and standby to throw bus connection switch another
One side bus voltage is more than U2；There is main confession circuit without stream, and after its switching, voltage is voltage starting decision content less than U2, U2；
If bus is powered by segmentation or mother, meet following two conditions at the same time and continue for presetting the startup of circuit automatic bus
During the time, it is determined that meet mother and haul oneself willingly into entry condition: standby bus connection switch one side bus voltage of throwing is less than U2, and standby throwing bus connection switch
Opposite side busbar voltage is voltage starting decision content more than U2, U2；There is the bus connection switch tripping of decompression bus side.
220kV spare power automatic switching method the most according to claim 1, it is characterised in that:
When meeting following condition at the same time, it is determined that 220kV circuit is main for circuit: the maintenance pressing plate of circuit is exiting state；Line
Way switch is closing position；After circuit switching, voltage has compression set value more than or equal to U1, described U1 for presetting element；At circuit backup power automatic switching
It it is non-load terminated line under decision condition；
When meeting following condition at the same time, it is determined that 220kV circuit is standby throwing circuit: the maintenance pressing plate of circuit is exiting state；Line
Way switch is in a point position；After circuit switching, voltage is more than or equal to U1；Circuit PT measures voltage more than or equal to U1；Break belonging to circuit
The standby priority of throwing in face is not 0, and described U1 has compression set value for presetting element；
When meeting following condition at the same time, it is determined that the line section of 220kV circuit is standby line section of throwing: in line section combination
The most main for circuit；The most once for throwing circuit in line section combination；The standby priority of throwing of line section is not 0.
220kV spare power automatic switching method the most according to claim 1, it is characterised in that when meeting following condition at the same time, it is determined that
220kV bus connection switch is standby throwing bus connection switch: the maintenance pressing plate of bus connection switch is exiting state；Bus connection switch is in a point position；Mother
The bus of switch both sides all has pressure and non-maintenance；The switch the preset standby throwing priority of bus connection switch is non-zero.
220kV spare power automatic switching method the most according to claim 1, it is characterised in that 220kV circuit is divided into main for state, standby
Throwing state, inspecting state and throwing state off guard；Wherein, standby throwing state is only effective in circuit backup power automatic switching function, main for state, inspection
Repair state and throwing state off guard the most effective in circuit, mother backup power automatic switching function.
220kV spare power automatic switching method the most according to claim 1, it is characterised in that 220kV bus connection switch is divided into operation shape
State, maintenance shape body, standby throwing state and throwing state off guard.
220kV spare power automatic switching method the most according to claim 1, it is characterised in that:
Meet following five conditions at the same time and continue for presetting the circuit automatic bus charging interval, it is determined that completing circuit backup power automatic switching
The charging process of function: backup power automatic switching function pressing plate is in the state of input；The bus of non-inspecting state has pressure；The mother of non-inspecting state
Closing position；An at least standby throwing line section；The most main for circuit；
When meeting following two conditions at the same time and continue for presetting the circuit automatic bus startup time, it is determined that meet circuit and haul oneself willingly into
Entry condition: the busbar voltage of all operations is voltage starting decision content less than U2, U2；All main confession circuits are all without stream.
220kV spare power automatic switching method the most as claimed in any of claims 1 to 6, it is characterised in that by the circuit preset
Section is standby throws priority order from high to low, detects whether each standby throwing line section switch meets standby throwing condition, if meeting, then
Guan Bi meets the standby of prepared auto restart condition and throws line section switch successively, until prepared auto restart success or to all default breakage of circuits
Face is standby throws priority and has all judged that the failed step of rear prepared auto restart is further comprising the steps of:
The maximum standby number of times of throwing of order is the standby standby maximum throwing priority of line section throwing line section；
It is examined in the standby standby line section of throwing throwing priority of each line section and switchs whether 5s before activation meets standby throwing condition；
If so, when transformer station is with small power supply, being excised by small power supply, after presetting time delay, Guan Bi is standby throws line section switch；
When transformer station is without small power supply, directly Guan Bi is standby throws line section switch；
If detecting in default dynamic time, decompression busbar voltage is recovered, then put on record and haul oneself willingly into successfully.
220kV spare power automatic switching method the most as claimed in any of claims 1 to 6, it is characterised in that by the switch preset
Standby throwing priority order from high to low, detects whether each standby throwing bus connection switch meets standby throwing condition, if satisfied Guan Bi successively is completely
The standby of foot prepared auto restart condition throws bus connection switch, until prepared auto restart success or throw priority standby to all default switches all judge
The step that after completing, prepared auto restart is failed is further comprising the steps of:
The maximum standby number of times of throwing of order is the standby standby maximum throwing priority of switch throwing bus connection switch；
It is examined in whether the standby standby bus connection switch 5s before activation of throwing throwing priority of each switch meets standby throwing condition；
The most then when decompression bus need to excise small power supply, the small power supply circuit of excision decompression bus, close after presetting time delay
Standby throwing bus connection switch, when decompression bus is without excising small power supply, directly Guan Bi is standby throws bus connection switch；
If the voltage of decompression bus recovers in default dynamic time, then put on record and haul oneself willingly into successfully.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106787153A (en) * | 2017-02-21 | 2017-05-31 | 国网山东省电力公司莱芜供电公司 | A method for incoming line backup for inner bridge wiring |
| CN107329027B (en) * | 2017-05-26 | 2019-08-27 | 广西电网有限责任公司 | Applicable to light-load dual-bus standby self-transfer TV disconnection method |
| CN109462230A (en) * | 2018-11-09 | 2019-03-12 | 南京国电南自电网自动化有限公司 | A kind of load transfer decision system and method based on high-speed bus |
| CN109861218A (en) * | 2019-03-14 | 2019-06-07 | 深圳供电局有限公司 | 10kV spare power automatic switching device |
| CN110149001A (en) * | 2019-05-24 | 2019-08-20 | 华自科技股份有限公司 | Generator throws method, apparatus, system, computer equipment and storage medium certainly |
| CN111030289A (en) * | 2019-12-27 | 2020-04-17 | 深圳供电局有限公司 | Self-adaptive standby power supply automatic switching method and device for 220kV double-bus section wiring |
| CN111786383B (en) * | 2020-07-01 | 2021-05-25 | 云南电网有限责任公司曲靖供电局 | Spare power automatic switching device and method for realizing mutual backup of multiple power incoming lines |
| CN112186881B (en) * | 2020-09-14 | 2022-05-31 | 深圳供电局有限公司 | Optimized switching method and system for automatic switching device of standby power supply |
| CN113193643B (en) * | 2021-03-31 | 2023-04-11 | 深圳供电局有限公司 | Spare power automatic switching device switching method and device based on transformer substation |
| CN113517685A (en) * | 2021-03-31 | 2021-10-19 | 广西电网有限责任公司 | Stable control device bypass route replacement switching method based on switch deflection |
| CN113702736B (en) * | 2021-08-24 | 2023-03-03 | 深圳供电局有限公司 | Regular inspection method, device, system and computer equipment for self-injection equipment |
| CN115411754B (en) * | 2022-11-02 | 2023-01-24 | 广东电网有限责任公司中山供电局 | Incoming spare power automatic switching method and device for energy storage power station |
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| JP3471914B2 (en) * | 1994-09-26 | 2003-12-02 | Ｋｄｄｉ株式会社 | System switching device for optical cable power supply system |
| CN201774319U (en) * | 2010-09-02 | 2011-03-23 | 西南交通大学 | Bus tie protection measurement and control and standby automatic switching device of railway power distribution station |
| CN102055235B (en) * | 2011-01-12 | 2013-01-30 | 广东省电力调度中心 | Spare power automatic switching method for 220kV side circuit and bus of 220kV transformer station |
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Effective date of registration: 20200917 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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