CN108051706A - Automatic throw-in equipment of emergency power supply fault recognition method and system - Google Patents
Automatic throw-in equipment of emergency power supply fault recognition method and system Download PDFInfo
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- CN108051706A CN108051706A CN201711463081.9A CN201711463081A CN108051706A CN 108051706 A CN108051706 A CN 108051706A CN 201711463081 A CN201711463081 A CN 201711463081A CN 108051706 A CN108051706 A CN 108051706A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
A kind of automatic throw-in equipment of emergency power supply fault recognition method and system are related to the method and system of substation's alternate power autocast.This method comprises the following steps：The installation combining unit intelligent terminal integrated device concentrated in mother and inlet wire, gather the electric current and the position of the switch of the voltage, inlet wire of busbar and inlet wire with segmentation, and backup auto-activating device is sent to optical signal message, while receive and perform the operation of the order control breaker from prepared auto restart；Criterion of its current direction of backup auto-activating device automatic decision as fault location；When meeting prepared auto restart entry condition, backup auto-activating device judges whether bus-bar fault or transformer fault, then according to strategy execution prepared auto restart logic, automatic identification fault type.The system includes automatic throw-in equipment of emergency power supply, in real time combining unit intelligent terminal integrated device, direction monitoring unit, breakdown judge and the position monitor unit of monitoring line current direction and size.The present invention can effectively improve the power supply reliability of electric power networks and the stability of operation of power networks.
Description
Technical field
The present invention relates to the method and system of substation's alternate power autocast, more particularly to a kind of 110kV voltages etc.
Grade does not configure bus protection, it is necessary to prepared auto restart automatic identification fault type, performs the standby electric power automatic throwing of Different Logic
Method and system.
Background technology
With the high speed development of social economy, power consumer is to the stability of the power supply reliability and operation of power networks of power grid
It is it is required that also higher and higher.
The backup auto-activating device in Intelligent transformer station can realize automatic detection substation operation mode in station, complete at present
Alternate power autocast logic, can greatly improve the power supply reliability of power grid, occupy in Automation System of Power Network important
Status.But the substation of the 110kV voltage class of current mainstream, bus protection will not be separately configured, in this way, working as has busbar event
During barrier, go to cut off by the back-up protection action of transformer or circuit, the automatic device in standby electricity source can be put into after excision, still
There are the risks of He Zhong Library；During for transformer action, mainstream prepared auto restart fails division operation type before this, is directly latched
Prepared auto restart has that loss part meets.There is presently no event can be voluntarily differentiated according to related electric amount and switching value
Hinder type, the automatic switching device of standby power supply for performing Different Strategies.
The content of the invention
One of the objects of the present invention is to provide one kind in Intelligent transformer station can quick, accurate judgement fault type,
And the strategy according to response realizes stand-by power supply and the automatic throw-in equipment of emergency power supply fault recognition method automatically engaged.
An object of the present invention can be achieved in that, design a kind of automatic throw-in equipment of emergency power supply fault identification side
Method comprises the following steps：
A, the installation combining unit intelligent terminal integrated device concentrated in mother and inlet wire, acquisition busbar voltage, into
Line voltage, inlet wire current, segmented current and inlet wire and block switch position, and message optical signal is sent to backup auto-activating device, together
When receive and perform the tripping from prepared auto restart, close a floodgate order, control the operation of breaker；
B, the busbar voltage and inlet wire electricity that backup auto-activating device is transmitted according to circuit combining unit intelligent terminal integrated device
Its current direction of the relation automatic decision of stream, the criterion as fault location；
C, when busbar voltage has been unsatisfactory for press strip part, while meets prepared auto restart entry condition, backup auto-activating device is according to phase
Of ac and electrical magnitude relation are closed, bus-bar fault or transformer fault is judged whether, is then held according to different strategies
The different prepared auto restart logic of row, automatic identification fault type.
Further, the relation of busbar voltage and inlet wire current by circuit, it is specified that flow to busbar as positive direction, directional element
Using 90 ° of wiring, positive direction operation equation is：
In formula：WithCorresponding electric current and voltage in 90 ° of modes of connection are represented respectively；
When device is judged as positive direction and when current value is more than fault current threshold, illustrate that trouble point is in breaker at this time
Below current transformer；Then it is line fault if negative direction.
When further, in mother prepared auto restart mode, charge when the following conditions are satisfied by：1a, bus connection switch are in
Gate-dividing state；1b, service entrance switch are in "on" position；1c, busbar voltage have pressure definite value higher than busbar；
It discharges when following any one condition meets：2a, locking inlet wire are hauled oneself willingly into and opened into putting 1；2b, remote control are jumped manually on the spot
Drive the switch of one of line into；2c, transformer action signal put 1；2d, bus connection switch close；2e, two sections of busbar voltages have been unsatisfactory for
The time is pressed to be more than 15s；2f, inlet wire combining unit intelligent terminal integrated device inspecting state and backup auto-activating device inspecting state are not
Unanimously；2g, mother combining unit intelligent terminal integrated device inspecting state and backup auto-activating device inspecting state are inconsistent；2h、
The soft pressing plate of mother prepared auto restart or control word are not put into；2i, service entrance switch refuse to jump or bus connection switch is refused to close；
When backup auto-activating device receives the actuating signal from protection equipment for transformer, it is believed that correspond to transformer guarantor at this time
There are failure, backup auto-activating device should directly discharge shield；
The electric current for flowing through inlet wire is more than the fault current threshold set, and is judged as positive direction according to direction criterion, then fills
It puts and is judged as corresponding female bus-bar fault；The service entrance switch is cut off first, closes bus connection switch；After closing bus connection switch, if corresponding
Female failure is transient fault, then failure has eliminated at this time, and system can normal operation；If corresponding mother's failure is permanent fault,
After closing bus connection switch, accelerate definite value after the fault current of mother CT is more than, start acceleration function after mother at this time, cut
Bus connection switch, isolated fault point；
The electric current for flowing through inlet wire is less than the fault current threshold set or is judged as negative direction according to direction criterion, then
Device is judged as line fault, cuts off corresponding service entrance switch first, closes bus connection switch, ensures that whole station does not lose voltage.
When further, in inlet wire prepared auto restart mode, charge when the following conditions are satisfied by：At 3a, the service entrance switch
In gate-dividing state；3b, another service entrance switch are in "on" position；3c, busbar voltage have pressure definite value higher than busbar；3d, mother are opened
It closes in "on" position；3e, when examining primary voltage control word input, should have pressure definite value higher than inlet wire into line extraction voltage；
It discharges when following any one condition meets：4a, locking inlet wire are hauled oneself willingly into and opened into putting 1；4b, remote control are jumped manually on the spot
Open another service entrance switch；4c, the transformer action signal put 1；4d, the service entrance switch close；4e, when inspection, the primary voltage controls
When word is put into, the pressure time should be unsatisfactory for into line extraction voltage more than 15s；4f, inlet wire combining unit intelligent terminal are integrally disguised
It puts inspecting state and backup auto-activating device inspecting state is inconsistent；4g, mother combining unit intelligent terminal integrated device maintenance shape
State and backup auto-activating device inspecting state are inconsistent；4h, the soft pressing plate of inlet wire prepared auto restart or control word are not put into；4i, Ling Yijin
Wiretap refuses jump, and either the service entrance switch is refused to close or bus connection switch is refused to jump；
When backup auto-activating device, which is received, becomes the actuating signal of protective device from 1#, it is believed that 1# becomes protection in the presence of event at this time
Barrier, backup auto-activating device start at this time, and tripping inlet wire " 1 " switch and bus connection switch then close inlet wire " 2 " switch；
When backup auto-activating device, which is received, becomes the actuating signal of protective device from 2#, it is believed that 2# becomes protection in the presence of event at this time
Barrier, backup auto-activating device should directly discharge, prevent He Zhong Library, influence system stability；
The electric current for flowing through inlet wire " 1 " is more than the fault current threshold set, and is judged as positive direction according to direction criterion, then
Device is judged as bus-bar fault, cuts off bus connection switch first, and the current vanishes of inlet wire " 1 ", explanation are flowed through after excision bus connection switch
Trouble point has been cut off on mother's II busbar；If flow through the electric current of inlet wire " 1 " there are still, illustrate trouble point on mother's I busbar,
Device cuts off inlet wire " 1 " switch again, closes inlet wire " 2 " switch, ensures that mother's II load is not removed；
The electric current for flowing through inlet wire " 1 " is less than the fault current threshold set or is judged as negative direction according to direction criterion,
Then device is judged as line fault, cuts off inlet wire " 1 " first and switchs, and closes inlet wire " 2 " switch, ensures that whole station does not lose voltage.
An object of the present invention can be achieved in that, design a kind of automatic throw-in equipment of emergency power supply fault identification system
System, including automatic throw-in equipment of emergency power supply, combining unit intelligent terminal integrated device, in real time monitoring line current direction and
Direction monitoring unit, breakdown judge and the position monitor unit of size,
Automatic throw-in equipment of emergency power supply, the electrical quantity provided according to combining unit intelligent terminal integrated device and switch
Information is measured, automatic decision is out of order situation, performs logic corresponding with fault type according to fault type, ensures electric power system
Reliability and stability；
Combining unit intelligent terminal integrated device is opened according to the analog quantity sampled value that collects collector, breaker
Off position and transformer substation synchronous signal, are sent with optical signal, while receive the control life from automatic throw-in equipment of emergency power supply
Order, goes to operating breaker mechanism；
The direction monitoring unit of monitoring line current direction and size in real time, according to the busbar voltage and line electricity received
Stream, judges sense of current and size；
Breakdown judge and position monitor unit, according to the direction monitoring unit of real-time monitoring line current direction and size
Monitoring result failure judgement passes through switching fault point.
The present invention uses to set in substation control system can detect our station busbar voltage and inlet wire current direction in real time
Detection unit, real-time monitoring system electrical quantity and the states such as killer switch information and other protective device actuating signals are simultaneously real-time
Backup auto-activating device is sent to optical signal while receives the combining unit intelligent terminal integrated unit from prepared auto restart order
Structure so that backup auto-activating device system of the invention can effectively improve the stabilization of the power supply reliability and operation of power networks of electric power networks
Property, it had not only been applicable in and had been used as normal conventional prepared auto restart, but also can have been used as the prepared auto restart for possessing fault identification function.
Description of the drawings
Fig. 1 is the network architecture schematic diagram of present pre-ferred embodiments；
Fig. 2 is that the inlet wire " 2 " of present pre-ferred embodiments hauls oneself willingly into action logic figure；
Fig. 3 is the segmentation prepared auto restart action logic figure of present pre-ferred embodiments.
Specific embodiment
The invention will be further described with reference to embodiments.
The present invention be directed to single busbar, the bypass of single busbar band, single mother partition and the substation of single mother partition band bypass
Main electrical scheme and the spare power automatic switching method of intelligent automatic throw-in equipment of emergency power supply (also known as backup auto-activating device) designed.The present invention can
Electric power system fault type is judged with electric quantity informations such as the intake according to device and of acs, according to different faults type
Perform different logics.
A kind of automatic throw-in equipment of emergency power supply fault recognition method, comprises the following steps：
A, the installation combining unit intelligent terminal integrated device concentrated in mother and inlet wire, acquisition busbar voltage, into
Line voltage, inlet wire current, segmented current and inlet wire and block switch position, and be sent to IEC61850 message optical signals for certainly
Device is thrown, while receives and perform the tripping from prepared auto restart, order of closing a floodgate, controls the operation of breaker；
B, the busbar voltage and inlet wire electricity that backup auto-activating device is transmitted according to circuit combining unit intelligent terminal integrated device
Its current direction of the relation automatic decision of stream, the criterion as fault location；
C, when busbar voltage has been unsatisfactory for press strip part, while meets prepared auto restart entry condition, backup auto-activating device is according to phase
Of ac and electrical magnitude relation are closed, bus-bar fault or transformer fault is judged whether, is then held according to different strategies
The different prepared auto restart logic of row, automatic identification fault type ensure reliable and stable purpose of powering.
The busbar voltage and inlet wire current that backup auto-activating device is transmitted according to circuit combining unit intelligent terminal integrated device
Relation automatic decision its current direction, as the criterion of fault location, criterion is as follows：The pass of busbar voltage and inlet wire current
System by circuit, it is specified that flow to busbar as positive direction, directional element uses 90 ° of wiring (Ia → Ubc/Ib → Uca/Ic → Uab), just
Direction operation equation is：
In formula：WithCorresponding electric current and voltage in 90 ° of modes of connection are represented respectively.
When device is judged as positive direction and when current value is more than fault current threshold, illustrate that trouble point is in breaker at this time
Below current transformer；Then it is line fault if negative direction.Fault distinguishing and direction recognition function device real-time judge are protected
Demonstrate,prove the reliable with complete of data, elimination erroneous judgement, misjudgement risk.
Realization process of the present invention is as follows：
1st, as shown in Figure 1 and Figure 2, by taking inlet wire " 2 " is hauled oneself willingly into as an example.
During in inlet wire prepared auto restart mode, charge when the following conditions are satisfied by：3a, the service entrance switch (inlet wire 2 switchs)
In gate-dividing state；3b, another service entrance switch (inlet wire 1 switchs) are in "on" position；3c, busbar voltage have pressure to determine higher than busbar
Value；3d, bus connection switch are in "on" position；3e, when examine inlet wire (inlet wire " 2 ") the voltage control word input when, the inlet wire (inlet wire
" 2 ") it extracts voltage and has pressure definite value higher than inlet wire.
It discharges when following any one condition meets：4a, locking inlet wire are hauled oneself willingly into and opened into putting 1；4b, remote control are jumped manually on the spot
Open another service entrance switch (inlet wire " 1 " switch)；4c, transformer (2# transformers) actuating signal put 1；4d, the service entrance switch (into
Line " 2 " switchs) it closes；4e, when examine inlet wire (inlet wire " 2 ") the voltage control word input when, the inlet wire (inlet wire " 2 ") extract voltage
The pressure time has been unsatisfactory for more than 15s；4f, inlet wire (inlet wire 1 or inlet wire 2) combining unit intelligent terminal integrated device maintenance shape
State and backup auto-activating device inspecting state are inconsistent；4g, mother combining unit intelligent terminal integrated device inspecting state with it is standby from
It is inconsistent to throw turnaround of unit state；4h, inlet wire (inlet wire " 2 ") the soft pressing plate of prepared auto restart or control word are not put into；4i, Ling Yijin
Wiretap (inlet wire " 1 " switch) refuses jump, and either the service entrance switch (inlet wire " 2 " switch) is refused to close or bus connection switch is refused to jump.
Action logic is divided into：1# main transformers failure, 2# main transformers failure, mother's I bus-bar fault, mother's II bus-bar fault, inlet wire " 2 " line
Situations such as road failure, device can perform different strategies according to various situations.
When backup auto-activating device, which is received, becomes the actuating signal of protective device from 1#, it is believed that 1# becomes protection in the presence of event at this time
Barrier, backup auto-activating device start at this time, and tripping inlet wire " 1 " switch and bus connection switch then close inlet wire " 2 " switch.When 1# transformations
When device breaks down, backup auto-activating device receives the GOOSE actuating signals sent from 1# main transformer protections at this time, judges that I is female
Whether line voltage is below busbar without pressure definite value with the female voltages of II, determines if meeting two sections of busbar voltages and being below busbar without pressure
Being worth, then prepared auto restart starts, and through adjusting delay tripping inlet wire " 1 " switch and bus connection switch, device sends actuating signal, while for certainly
Launch electricity；After confirming inlet wire " 1 " switch and bus connection switch all trippings, through a time definite value, send automatically and close inlet wire " 2 " switch life
Order；Confirm that inlet wire " 2 " switchs to have closed a floodgate, send the report of prepared auto restart completion.In prepared auto restart action process, any one switch
It refuses to jump or refuses to close, stop prepared auto restart action process, and send the report of prepared auto restart failure.Failure is isolated at this time, ensures II
Female load is not removed, improves power supply reliability.
When backup auto-activating device, which is received, becomes the actuating signal of protective device from 2#, it is believed that 2# becomes protection in the presence of event at this time
Barrier, backup auto-activating device should directly discharge, prevent He Zhong Library, influence system stability.When 2# becomes failure, when 2# transformers are sent out
During raw failure, backup auto-activating device receives the GOOSE actuating signals sent from 2# main transformer protections at this time, and prepared auto restart is direct at this time
Electric discharge, it is impossible to act, if because closing inlet wire " 2 " can directly be joined in failure, cause to impact to electric system.
The electric current for flowing through inlet wire " 1 " is more than the fault current threshold set, and is judged as positive direction according to direction criterion, then
Device is judged as bus-bar fault, cuts off bus connection switch first, and the current vanishes of inlet wire " 1 ", explanation are flowed through after excision bus connection switch
Trouble point has been cut off on mother's II busbar；If flow through the electric current of inlet wire " 1 " there are still, illustrate trouble point on mother's I busbar,
Device cuts off inlet wire " 1 " switch again, closes inlet wire " 2 " switch, ensures that mother's II load is not removed.During mother's II failure, mother's I busbar
Voltage and mother's II busbar voltage can be less than busbar without pressure definite value, while inlet wire " 1 " direction criterion can be judged at this time for pros
To that is, electric current flows to busbar by circuit.Backup auto-activating device is judged as bus-bar fault.Through adjusting delay bus connection switch, device is sent
Actuating signal, while prepared auto restart discharges；After determining bus connection switch tripping, if the electric current for flowing through inlet wire " 1 " is determined less than fault current
Value, illustrates that failure is on mother's II busbar at this time, and has been isolated, and backup auto-activating device sends the report of prepared auto restart completion.For certainly
It throws in action process, bus connection switch is refused to jump, and stops prepared auto restart action process, and sends the report of prepared auto restart failure.
During mother's I failure, mother's I busbar voltage and mother's II busbar voltage can be less than busbar without pressure definite value, while inlet wire " 1 " is square
Can judge to be positive direction at this time to criterion, i.e. electric current flows to busbar by circuit.Backup auto-activating device is judged as bus-bar fault.Through whole
Surely be delayed bus connection switch, and device sends actuating signal, while prepared auto restart discharges；After determining bus connection switch tripping, if flowing through inlet wire
The electric current of " 1 " illustrates that on mother's I busbar, failure still remains failure at this time, through adjusting delay still above fault current definite value
Tripping inlet wire " 1 " switchs, and device sends actuating signal；After confirming that inlet wire " 1 " switchs tripping, through a time definite value, send automatically
Inlet wire " 2 " switch command is closed, backup auto-activating device sends the report of prepared auto restart completion.It is any one to open in prepared auto restart action process
Pass refuses to jump or refuses to close, and stops prepared auto restart action process, stops prepared auto restart action process, and sends the report of prepared auto restart failure.
The electric current for flowing through inlet wire " 1 " is less than the fault current threshold set or is judged as negative direction according to direction criterion,
Then device is judged as line fault, cuts off inlet wire " 1 " first and switchs, and closes inlet wire " 2 " switch, ensures that whole station does not lose voltage.
When line failure, mother's I busbar voltage and mother's II busbar voltage can be less than busbar without pressure definite value, while inlet wire " 1 " is square
Can judge to be negative direction at this time to criterion, i.e. electric current flows to circuit by busbar, and prepared auto restart is through adjusting delay tripping inlet wire at this time
" 1 " switchs, and device sends actuating signal, while prepared auto restart discharges；After confirming that inlet wire " 1 " switchs tripping, through a time definite value, from
Dynamic send closes inlet wire " 2 " switch command；Confirm that inlet wire " 2 " switchs to have closed a floodgate, send the report of prepared auto restart completion.In prepared auto restart
In action process, any one switch is refused to jump or refuses to close, and stops prepared auto restart action process, and sends the report of prepared auto restart failure.
2nd, as shown in Figure 1, Figure 3, by taking mother prepared auto restart as an example：
During in mother prepared auto restart mode, charge when the following conditions are satisfied by：1a, bus connection switch are in gate-dividing state；
1b, service entrance switch (inlet wire " 1 " switch, inlet wire " 2 " switch) are in "on" position；1c, busbar voltage have pressure definite value higher than busbar.
It discharges when following any one condition meets：2a, locking inlet wire are hauled oneself willingly into and opened into putting 1；2b, remote control are jumped manually on the spot
Drive the switch (inlet wire " 1 " switchs or inlet wire " 2 " switch) of one of line into；2c, into one of line transformer (1# transformers or 2#
Transformer) actuating signal put 1；2d, bus connection switch close；2e, two sections of busbar voltages have been unsatisfactory for the pressure time more than 15s；2f、
Inlet wire (inlet wire 1 or inlet wire 2) combining unit intelligent terminal integrated device inspecting state and backup auto-activating device inspecting state are not
Unanimously；2g, mother combining unit intelligent terminal integrated device inspecting state and backup auto-activating device inspecting state are inconsistent；2h、
The soft pressing plate of mother prepared auto restart or control word are not put into；2i, service entrance switch (inlet wire " 1 " switchs or inlet wire " 2 " switch) are refused to jump
Or bus connection switch is refused to close.
Action logic is divided into：1# main transformers failure, 2# main transformers failure, mother's I bus-bar fault, mother's II bus-bar fault, inlet wire " 2 " line
Situations such as road failure, device can perform different strategies according to various situations.
When backup auto-activating device receives the actuating signal from protection equipment for transformer, it is believed that correspond to transformer guarantor at this time
There are failure, backup auto-activating device should directly discharge shield, prevent He Zhong Library, influence system stability.1# become failure when or
2# main transformer failures, when transformer breaks down, backup auto-activating device is received from 1# main transformer protections or 2# main transformers guarantor at this time
The GOOSE actuating signals taken care of hair out, at this moment prepared auto restart directly discharge, it is impossible to act, if because close inlet wire " 2 " can directly be joined to therefore
On barrier, electric system is caused to impact.
During mother's I failure, mother's I busbar voltage can be less than busbar without pressure definite value, while inlet wire " 1 " direction criterion can be judged
It is at this time positive direction, i.e. electric current flows to busbar by circuit.Backup auto-activating device is judged as bus-bar fault.Through adjusting delay inlet wire " 1 "
Switch, device sends actuating signal, while prepared auto restart discharges；After determining inlet wire " 1 " switch tripping, through a time definite value, automatically
It sends and closes bus connection switch order, determine that bus connection switch closes, backup auto-activating device sends the report of prepared auto restart completion.It is moved in prepared auto restart
During work, any one switch is refused to jump or refuses to close, and stops prepared auto restart action process, stops prepared auto restart action process, and sends
The report of prepared auto restart failure.After closing bus connection switch, if mother's I failure is transient fault, failure has eliminated at this time, and system can
Normal operation；If mother's I failure is permanent fault, after closing bus connection switch, accelerate after the fault current of mother CT is more than
Definite value starts acceleration function after mother, cuts bus connection switch, isolated fault point at this time.
During mother's II failure, mother's II busbar voltage can be less than busbar without pressure definite value, while inlet wire " 2 " direction criterion can judge
It is positive direction at this time to go out, i.e. electric current flows to busbar by circuit.Backup auto-activating device is judged as bus-bar fault.Through adjusting delay inlet wire
" 2 " switch, and device sends actuating signal, while prepared auto restart discharges；After determining inlet wire " 2 " switch tripping, through a time definite value, from
Dynamic send closes bus connection switch order, determines that bus connection switch closes, and backup auto-activating device sends the report of prepared auto restart completion.In prepared auto restart
In action process, any one switch is refused to jump or refuses to close, and stops prepared auto restart action process, stops prepared auto restart action process, concurrently
Go out the report of prepared auto restart failure.After closing bus connection switch, if mother's II failure is transient fault, failure has eliminated at this time, is
System can normal operation；If mother's II failure is permanent fault, after closing bus connection switch, after the fault current of mother CT is more than
Accelerate definite value, start acceleration function after mother at this time, cut bus connection switch, isolated fault point.
Line fault, when line failure, mother's I busbar voltage can be less than busbar without pressure definite value, while inlet wire " 1 " is square
Can judge to be negative direction at this time to criterion, i.e. electric current flows to circuit by busbar, and prepared auto restart is through adjusting delay tripping inlet wire at this time
" 1 " switchs, and device sends actuating signal, while prepared auto restart discharges；After confirming that inlet wire " 1 " switchs tripping, through a time definite value, from
Dynamic send closes bus connection switch order；Confirm that bus connection switch has closed a floodgate, send the report of prepared auto restart completion.It was acted in prepared auto restart
Cheng Zhong, any one switch are refused to jump or refuse to close, and stop prepared auto restart action process, and send the report of prepared auto restart failure.
Above-mentioned prepared auto restart mode is adaptive mode, and device can voluntarily judge by respective circuit breakers position, without
Artificial throw is moved back.
As shown in Figure 1, a kind of automatic throw-in equipment of emergency power supply fault finding system, fills including alternate power autocast
It puts, combining unit intelligent terminal integrated device, the real-time direction monitoring unit for monitoring line current direction and size, failure are sentenced
Disconnected and position monitor unit.
Automatic throw-in equipment of emergency power supply, the electrical quantity provided according to combining unit intelligent terminal integrated device and switch
Information is measured, automatic decision is out of order situation, performs logic corresponding with fault type according to fault type, ensures electric power system
Reliability and stability.
Combining unit intelligent terminal integrated device is opened according to the analog quantity sampled value that collects collector, breaker
Off position and transformer substation synchronous signal, are sent with optical signal, while receive the control life from automatic throw-in equipment of emergency power supply
Order, goes to operating breaker mechanism.
The direction monitoring unit of monitoring line current direction and size in real time, according to the busbar voltage and line electricity received
Stream, judges sense of current and size.
Breakdown judge and position monitor unit, according to the direction monitoring unit of real-time monitoring line current direction and size
Monitoring result failure judgement passes through switching fault point.
Corresponding data record can be stored in other client control device operation informations, and every time after action, for
Follow-up investigation.
The present invention uses to set in substation control system can detect our station busbar voltage and inlet wire current direction in real time
Detection unit, real-time monitoring system electrical quantity and the states such as killer switch information and other protective device actuating signals are simultaneously real-time
Backup auto-activating device is sent to optical signal while receives the combining unit intelligent terminal integrated unit from prepared auto restart order
Structure so that backup auto-activating device system of the invention can effectively improve the stabilization of the power supply reliability and operation of power networks of electric power networks
Property, it had not only been applicable in and had been used as normal conventional prepared auto restart, but also can have been used as the prepared auto restart for possessing fault identification function.
Claims (9)
1. a kind of automatic throw-in equipment of emergency power supply fault recognition method, which is characterized in that comprise the following steps：
A, the installation combining unit intelligent terminal integrated device concentrated in mother and inlet wire, acquisition busbar voltage, inlet wire electricity
Pressure, inlet wire current, segmented current and inlet wire and block switch position, and light is sent to backup auto-activating device with signal message, simultaneously
The tripping from prepared auto restart, order of closing a floodgate are received and performed, controls the operation of breaker；
B, backup auto-activating device is transmitted according to circuit combining unit intelligent terminal integrated device busbar voltage and inlet wire current
Its current direction of relation automatic decision, the criterion as fault location；
C, when busbar voltage has been unsatisfactory for press strip part, while meets prepared auto restart entry condition, backup auto-activating device is handed over according to correlation
Flow and electrical magnitude relation, judge whether bus-bar fault or transformer fault, then according to different strategy executions not
Same prepared auto restart logic, automatic identification fault type.
2. automatic throw-in equipment of emergency power supply fault recognition method according to claim 1, which is characterized in that busbar voltage
Relation with inlet wire current by circuit, it is specified that flow to busbar as positive direction, directional element uses 90 ° of wiring, positive direction action side
Cheng Wei：
In formula：WithCorresponding electric current and voltage in 90 ° of modes of connection are represented respectively；
When device is judged as positive direction and when current value is more than fault current threshold, illustrate that trouble point is in circuit breaker current at this time
Below mutual inductor；Then it is line fault if negative direction.
3. automatic throw-in equipment of emergency power supply fault recognition method according to claim 2, it is characterised in that：Device judges
For real-time judge.
4. automatic throw-in equipment of emergency power supply fault recognition method according to claim 1, it is characterised in that：In mother
During prepared auto restart mode, charge when the following conditions are satisfied by：1a, bus connection switch are in gate-dividing state；1b, service entrance switch, which are in, to be closed
Lock state；1c, busbar voltage have pressure definite value higher than busbar；
It discharges when following any one condition meets：2a, locking inlet wire are hauled oneself willingly into and opened into putting 1；2b, remote control or on the spot manual tripping into
The switch of one of line；2c, transformer action signal put 1；2d, bus connection switch close；When 2e, two sections of busbar voltages have been unsatisfactory for pressure
Between be more than 15s；2f, inlet wire combining unit intelligent terminal integrated device inspecting state and backup auto-activating device inspecting state differ
It causes；2g, mother combining unit intelligent terminal integrated device inspecting state and backup auto-activating device inspecting state are inconsistent；2h, mother
The soft pressing plate of connection prepared auto restart or control word are not put into；2i, service entrance switch refuse to jump or bus connection switch is refused to close；
When backup auto-activating device receives the actuating signal from protection equipment for transformer, it is believed that correspond to tranformer protection at this time and deposit
In failure, backup auto-activating device should directly discharge；
The electric current for flowing through inlet wire is more than the fault current threshold set, and is judged as positive direction according to direction criterion, then device is sentenced
Break as corresponding female bus-bar fault；The service entrance switch is cut off first, closes bus connection switch；After closing bus connection switch, if corresponding female event
Hinder for transient fault, then failure has eliminated at this time, and system can normal operation；If corresponding mother's failure is permanent fault, close
After bus connection switch, accelerate definite value after the fault current of mother CT is more than, start acceleration function after mother at this time, cut mother
Switch, isolated fault point；
The electric current for flowing through inlet wire is less than the fault current threshold set or is judged as negative direction according to direction criterion, then device
It is judged as line fault, cuts off corresponding service entrance switch first, close bus connection switch, ensures that whole station does not lose voltage.
5. automatic throw-in equipment of emergency power supply fault recognition method according to claim 1, it is characterised in that：In inlet wire
During prepared auto restart mode, charge when the following conditions are satisfied by：3a, the service entrance switch are in gate-dividing state；3b, another service entrance switch
In "on" position；3c, busbar voltage have pressure definite value higher than busbar；3d, bus connection switch are in "on" position；3e, when inspection should be into
When line voltage control word is put into, there should be pressure definite value higher than inlet wire into line extraction voltage；
It discharges when following any one condition meets：4a, locking inlet wire are hauled oneself willingly into and opened into putting 1；4b, remote control or on the spot manual tripping it is another
One service entrance switch；4c, the transformer action signal put 1；4d, the service entrance switch close；4e, when inspection, the primary voltage control word is thrown
It is fashionable, the pressure time should be unsatisfactory for into line extraction voltage more than 15s；4f, the inspection of inlet wire combining unit intelligent terminal integrated device
It repaiies state and backup auto-activating device inspecting state is inconsistent；4g, mother combining unit intelligent terminal integrated device inspecting state with
Backup auto-activating device inspecting state is inconsistent；4h, the soft pressing plate of inlet wire prepared auto restart or control word are not put into；4i, another inlet wire are opened
Jump is refused in pass, and either the service entrance switch is refused to close or bus connection switch is refused to jump；
When backup auto-activating device, which is received, becomes the actuating signal of protective device from 1#, it is believed that 1#, which becomes, at this time protects there are failure,
Backup auto-activating device starts at this time, and tripping inlet wire " 1 " switch and bus connection switch then close inlet wire " 2 " switch；
When backup auto-activating device, which is received, becomes the actuating signal of protective device from 2#, it is believed that 2#, which becomes, at this time protects there are failure,
Backup auto-activating device should directly discharge, and prevent He Zhong Library, influence system stability；
The electric current for flowing through inlet wire " 1 " is more than the fault current threshold set, and is judged as positive direction according to direction criterion, then device
It is judged as bus-bar fault, cuts off bus connection switch first, the current vanishes of inlet wire " 1 " are flowed through after excision bus connection switch, illustrate failure
Point has been cut off on mother's II busbar；If flowing through the electric current of inlet wire " 1 ", there are still illustrate trouble point on mother's I busbar, device
Inlet wire " 1 " switch is cut off again, closes inlet wire " 2 " switch, ensures that mother's II load is not removed；
The electric current for flowing through inlet wire " 1 " is less than the fault current threshold set or is judged as instead according to claim 4 direction criterion
Direction, then device be judged as line fault, first cut off inlet wire " 1 " switch, close inlet wire " 2 " switch, ensure whole station do not lose
Voltage.
6. automatic throw-in equipment of emergency power supply fault recognition method according to claim 4 or 5, it is characterised in that：For certainly
Throwing mode is adaptive mode, and device voluntarily judges by respective circuit breakers position, is moved back without artificially throwing.
7. automatic throw-in equipment of emergency power supply fault recognition method according to claim 1, it is characterised in that：Optical signal is adopted
It is sent with IEC61850 forms.
8. a kind of automatic throw-in equipment of emergency power supply fault finding system, it is characterised in that：It is filled including alternate power autocast
It puts, combining unit intelligent terminal integrated device, the real-time direction monitoring unit for monitoring line current direction and size, failure are sentenced
Disconnected and position monitor unit,
Automatic throw-in equipment of emergency power supply, the electrical quantity and switching value provided according to combining unit intelligent terminal integrated device are believed
Breath, automatic decision are out of order situation, perform logic corresponding with fault type according to fault type, ensure the reliable of electric power system
Property and stability；
Combining unit intelligent terminal integrated device, according to collector is collected analog quantity sampled value, killer switch position
It puts and transformer substation synchronous signal, is sent with optical signal, while receive the control command from automatic throw-in equipment of emergency power supply, go
Operating breaker mechanism；
The direction monitoring unit of monitoring line current direction and size in real time, according to the busbar voltage and line current received,
Judge sense of current and size；
Breakdown judge and position monitor unit, according to the monitoring of real-time monitoring line current direction and the direction monitoring unit of size
As a result failure judgement passes through switching fault point.
9. automatic throw-in equipment of emergency power supply fault finding system according to claim 8, it is characterised in that：In other visitors
Family end monitoring device operation information, and corresponding data record is stored after action every time, for subsequently investigating.
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