CN106169812A - A kind of maloperation is avoided to cause the method for discrimination that last chopper logic trips - Google Patents
A kind of maloperation is avoided to cause the method for discrimination that last chopper logic trips Download PDFInfo
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- CN106169812A CN106169812A CN201610665523.7A CN201610665523A CN106169812A CN 106169812 A CN106169812 A CN 106169812A CN 201610665523 A CN201610665523 A CN 201610665523A CN 106169812 A CN106169812 A CN 106169812A
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Abstract
The invention discloses and a kind of avoid maloperation to cause the method for discrimination that last chopper logic trips, the method comprises the following steps: Exchange Station Ore-controlling Role be responsible for gathering each exchange string with exchange the switch of outlet string, disconnecting link state and on deliver to DC pole control system；DC pole control system main frame involutive ring string number carries out logical judgment with exchanging outlet number, and each exchange string is carried out operation interlocking with the switch exchanging outlet string, send according to different alternating-current field wiring and forbid pulling open or allow to pull open this cyclization string switch or the instruction of exchange outlet string switch；This instruction is sent to each cyclization string and the Exchange Station Ore-controlling Role exchanging outlet string place by fieldbus by DC pole control system；The wiring of each cyclization string or exchange outlet string place string is judged by each Exchange Station Ore-controlling Role program, finally judge that one of them switch in this string is last chopper, forbid pulling open this switch on this string, it is to avoid occur that maloperation causes last breaker actuation to cause the risk of tripping operation.
Description
Technical field:
The present invention relates to technical field of power systems, be specifically related to one and avoid maloperation to cause last chopper logic to be jumped
The method of discrimination of lock.
Background technology:
Last breaker protection is the important protection of DC engineering Inverter Station.After inverter side loses alternating current power supply, if
Straight-flow system fails timely locking, and a large amount of reactive-load compensation equipments that straight-flow system continues to being connected on change of current bus fill
Electricity, thus cause serious temporary overvoltage, valve, spark gap, change of current bus etc. are impacted.When Inverter Station the change of current become with
When all power supply points all disconnect, in order to prevent overvoltage, generally all install in the Inverter Station of HVDC transmission system
Last breaker protection, so that guarantee can rapidly locking straight-flow system when there is above-mentioned situation.Last breaker protection is used
In the generation preventing this situation.Last chopper logic: judge whether there is exchange outlet on bus and runs whether pole connects
Receive on bus.
At present cattle direct current from direct current, gold uses the control resist technology route of Nan Rui relay protection producer, the most finally
All there is following locking tripping operation hidden danger in chopper logic: when only the last item exchange outlet is simultaneously connected to I mother and mother II,
Pole control system program cannot differentiate that being in the last item exchanges out line states, and the last item of this exchange outlet place string exchanges out
Line arbitration functions lost efficacy, and occurred that this string switch still allows for pulling open, and there is direct current locking tripping operation hidden danger.2) the last item exchange outlet
Decision logic just for connecting the string of exchange outlet, do not consider on non-alternating outlet string the situation that switch is last chopper,
When two buses only carry out getting in touch with and run pole by non-alternating outlet string with when exchanging outlet on different buses, do not forbid breaking
Drive the switch of this non-alternating outlet string, there is last breaker actuation and cause direct current tripping operation hidden danger.
Summary of the invention:
It is an object of the invention to provide and a kind of avoid maloperation to cause the method for discrimination that last chopper logic trips, the party
Method uses alternating-current field cyclization string number to carry out last chopper judgement with exchanging outlet number, to being likely to result in last circuit breaker trip
Switch is interlocked, it is to avoid occur that maloperation causes last breaker actuation to cause the risk of tripping operation.
The present invention is achieved by the following technical programs:
A kind of avoiding maloperation to cause the method for discrimination that last chopper logic trips, the method comprises the following steps:
A, Exchange Station Ore-controlling Role be responsible for gathering each exchange string with exchange the switch of outlet string, disconnecting link state and on deliver to directly
Stream pole control system (is called for short PCP)；
Each exchange string that b, DC pole control system (PCP) main frame gather according to Exchange Station Ore-controlling Role with exchange outlet string
Switch, disconnecting link state involutive ring string number carry out logical judgment with exchanging outlet number, are carried out with exchanging outlet number by cyclization string number
Last chopper judges, it is judged that whether has exchange outlet on bus and runs whether pole is connected on bus, and to each exchange
String carries out operation interlocking with the switch exchanging outlet string, sends according to different alternating-current field wiring and forbids pulling open or allow to pull open this
Cyclization string switch or the instruction of exchange outlet string switch；As being judged as, last breaker actuation then trips locking direct current；This instruction
It is sent to each cyclization string and the Exchange Station Ore-controlling Role exchanging outlet string place by DC pole control system by fieldbus；
C, each Exchange Station Ore-controlling Role receive the instruction that DC pole control system is sent, each Exchange Station Ore-controlling Role by fieldbus
The wiring of each cyclization string or exchange outlet string place string is judged by program, finally judges that one of them in this string is opened
Closing is last chopper, forbids pulling open this switch on this string.
Especially, the instruction sent by fieldbus reception DC pole control system when each Exchange Station Ore-controlling Role is " switch
Do not allow to pull open ", it is judged that this string alternating-current field on off state, forbid that respective switch is pulled open.If do not received, " switch does not allows to draw
Open " instruction, then illustrate that the switch on this string is not last chopper, it is not necessary to forbid pulling open, determining program can not be performed.
Described DC pole control system main frame is provided with following determining program: the determining program of cyclization string number, cyclization string type
The determining program of (common string, exchange outlet string, pole connection string, exchange outlet string & pole connect string, double cross outflow line string), operation
The determining program of the bus that pole is close, operation pole are connected to the determining program of certain root bus, exchange outlet is connected to certain root mother
Whether the bus that the bus that the determining program of line, exchange outlet connect is connected with operation pole is the determining program of same root bus, friendship
Flow out line number determining program, exchange outlet is connected to run the determining program of the switch of place, pole bus process, run pole connection
Arrive the bus that the determining program of switch of exchange outlet place bus process, the bus of exchange outlet connection and operation pole are close
Whether the determining program of identical number, each exchange outlet are connected to the determining program of identical bus.
Described DC pole control system forbids that pulling open concrete differentiation logic is:
1) when alternating-current field is without cyclization string, and in the case of having an exchange outlet: do not allow to pull open exchange outlet string.Work as friendship
Flow field is without cyclization string, and in the case of having more than two exchange outlets: allow to pull open exchange outlet string.
2) there is a cyclization string when alternating-current field, have an exchange outlet, and the bus that exchange outlet connects is with operation pole even
The bus connect is in the case of with root bus: do not allow to pull open exchange outlet string；When cyclization string is common string, it is allowed to pull open, its
His situation does not allows to pull open.
3) there is a cyclization string when alternating-current field, have an exchange outlet, and the bus that exchange outlet connects is with operation pole even
In the case of the bus received is for different buses: do not allow to pull open exchange outlet string；Do not allow to pull open cyclization string.
4) there is a cyclization string when alternating-current field, have two exchange outlets, and two exchange bus and the operation that outlet connects
In the case of the bus that pole connects is all same root bus: allow to pull open exchange outlet string；When cyclization string is that pole connects string but non-friendship
When outflow line string & pole connection string and two exchange outlets are connected to identical bus, do not allow to pull open；When cyclization string is for exchanging out
When the number that line string & pole connects string and exchange outlet connects bus is identical with the close bus in operation pole is 1, do not allow
Pull open；When cyclization string is double cross outflow line string, do not allow to pull open；Other situations allow to pull open.
5) there is a cyclization string when alternating-current field, have two exchange outlets, and two exchange bus and the operation that outlet connects
In the case of the bus that pole connects is all different bus: allow to pull open exchange outlet string；Do not allow to pull open cyclization string.
6) there is a cyclization string when alternating-current field, have two exchange outlets, and two exchange bus and the operation that outlet connects
The bus one that pole connects identical and in the case of another difference: allow to pull open exchange outlet string；When cyclization string is for exchanging out
During line string, do not allow to pull open；Other situations allow to pull open.
7) there is a cyclization string when alternating-current field, have more than two exchange outlets, and exchange bus and the operation that outlet connects
In the case of the bus that pole connects is all same root bus: allow to pull open exchange outlet string；When cyclization string is that pole connects string but non-friendship
When outflow line string & pole connection string and each exchange outlet are connected to identical bus, do not allow to pull open；When cyclization string is exchange outlet
When the number that string & pole connects string and each exchange outlet connects the bus bus close with operation pole is identical is 1, do not allow
Pull open；Other situations allow to pull open.
8) there is a cyclization string when alternating-current field, have more than two exchange outlets, and exchange bus and the operation that outlet connects
In the case of the bus that pole connects is all different bus: allow to pull open exchange outlet string；Do not allow to pull open cyclization string.
9) there is a cyclization string when alternating-current field, have more than two exchange outlets, and exchange bus and the operation that outlet connects
In the case of bus one remaining difference identical that pole connects: allow to pull open exchange outlet string；When cyclization string is exchange outlet string
Time, do not allow to pull open；Other situations allow to pull open.
10) there is a cyclization string when alternating-current field, have more than two exchange outlets, and exchange bus and the operation that outlet connects
In the case of bus two remaining difference identical that pole connects: allow to pull open exchange outlet string；When cyclization string is that line is flowed out in double cross
During string, do not allow to pull open；Other situations allow to pull open.
11) there is a cyclization string when alternating-current field, have more than two exchange outlets, and exchange bus and the operation that outlet connects
The bus that pole connects is more than in the case of two remaining differences identical: allow to pull open exchange outlet string；Allow to pull open cyclization string.
12) there are two cyclization strings when alternating-current field, in the case of having an exchange outlet: when cyclization string is all non-alternating outlet
During string, do not allow to pull open；Other situations allow to pull open.Allow to pull open cyclization string.
13) there are two cyclization strings when alternating-current field, in the case of having more than two exchange outlets: allow to pull open exchange outlet
String；Allow to pull open cyclization string.
14) there are more than two cyclization strings when alternating-current field, in the case of having an exchange outlet: when cyclization string is all non-alternating
During outlet string, do not allow to pull open；Other situations allow to pull open.Allow to pull open cyclization string.
15) there are more than two cyclization strings when alternating-current field, in the case of having one or more exchange outlet: allow to pull open and exchange out
Line string；Allow to pull open cyclization string.
Described Exchange Station Ore-controlling Role forbids that pulling open concrete differentiation logic is:
1) when alternating-current field is without cyclization string, and have one exchange outlet in the case of: this string is outlet string, it is judged that exchange outlet
It is connected to the switch of process on bus, does not allows to pull open.When alternating-current field is without cyclization string, and there is the situation of one or more exchange outlet
Under: switch all allows to pull open, without determining program.
2) there is a cyclization string when alternating-current field, in the case of having an exchange outlet: when this string is non-cyclization string, it is judged that hand over
Flow out line and be connected to the switch of process on bus, do not allow to pull open and (do not consider that pole connects string, because if pole connects string for non-conjunction
Ring string, alternating current inlet wire switch does not allows to pull open)；When this string is cyclization string: as gone here and there for common, then all of switch on this string
Do not allow to pull open；As connected string for exchange outlet string but non-alternating outlet string & pole, then judge that exchange outlet is connected to run pole
The switch of place bus process, does not allows to pull open；As connected string for pole but non-alternating outlet string & pole connection string, then judge to run
Pole is connected to exchange the switch of outlet place bus process, does not allows to pull open；As for exchange outlet string & pole connect string, then in open
Close and do not allow to pull open.
3) there is a cyclization string when alternating-current field, in the case of having two exchange outlets: when this string is non-cyclization string, switch is all
Allowing to pull open, without determining program, (i.e. in cyclization string number=1, in the case of outlet number=2, the switch on non-cyclization string all allows
Pull open)；When this string is cyclization string: as gone here and there for common, then on this string, all of switch does not allows to pull open；As for exchanging outlet string
But non-alternating outlet string & pole connects string, line string is flowed out in non-double cross, then judge that this exchange outlet is connected to run place, pole bus warp
The switch crossed, does not allows to pull open；Go here and there but non-alternating outlet string pole connection string as connected for pole, then judge that running pole connection takes office
The switch of meaning exchange outlet (all exchanges outlet of this situation is all connected to identical bus) place bus process, does not allows to pull open；
As connected string for exchange outlet string & pole, then breaker in middle does not allows to pull open；As flowed out line string for double cross, then judge this exchange outlet
String switchs near the limit running place, pole bus, does not allows to pull open.
4) there is a cyclization string when alternating-current field, in the case of having more than two exchange outlets: when this string is non-cyclization string, open
Closing and all allow to pull open, without determining program, (i.e. in cyclization string number=1, in the case of outlet number 3, the switch on non-cyclization string is all
Allow to pull open)；When this string is cyclization string: as gone here and there for common, then on this string, all of switch does not allows to pull open；As for exchange out
Line string but non-alternating outlet string & pole connect string, then judge that exchange outlet is connected to run the switch of place, pole bus process, do not permit
Permitted to pull open；As connected string for pole but non-alternating outlet string & pole connection string, then judge that running pole is connected to arbitrarily exchange outlet (this
Situation all exchanges outlet is all connected to identical bus) switch of place bus process, do not allow to pull open；As for exchanging outlet
String & pole connects string, then breaker in middle does not allows to pull open；As flowed out line string for double cross, then judge that this exchange outlet string is near running pole
The limit switch of place bus, does not allows to pull open.
5) there are two cyclization strings when alternating-current field, in the case of having an exchange outlet: when this string is non-cyclization string, it is judged that hand over
Flow out line and be connected to the switch of process on bus, do not allow to pull open.
6) there are two cyclization strings when alternating-current field, in the case of having more than two exchange outlets: switch all allows to pull open, without sentencing
Disconnected program.
7) there are more than two cyclization strings when alternating-current field, in the case of having an exchange outlet: when this string is non-cyclization string, sentence
Outflow line of breaking off a friendship is connected to the switch of process on bus, does not allows to pull open.
8) there are more than two cyclization strings when alternating-current field, in the case of having one or more exchange outlet: switch all allows to pull open,
Without determining program.
Each pole of running configures identical determining program, judges the last circuit-breaker status of this operation pole, outlet logic respectively
For "or" logic, such as: run pole 1 judge certain string switch as " not allowing to pull open ", operation pole 2 is judged as " allowing to pull open ", then
Outlet is " not allowing to pull open ".
In the extremely last chopper determining program (DC pole control system and Exchange Station Ore-controlling Role) of each operation, as to running pole institute
When string is for " cyclization string ", then account for as " commonly string "；As to running place, pole string for " exchange outlet string & pole connects
String ", then account for as " exchange outlet string ".
When certain string is not only to exchange outlet string but also is cyclization string, this string outlet logic is "or" logic, i.e. direct current pole control system
When system program judges " not allowing to pull open cyclization string " with " allow to pull open and exchange outlet string ", then this string exports as " not allow to draw
Open ".When DC pole control system program judges " allowing to pull open cyclization string " with " do not allow to pull open and exchange outlet string ", then this string outlet
For " not allowing to pull open ".
When exchanging outlet place string for cyclization string, then it is assumed that exchange outlet is simultaneously connected with two buses；In like manner, operation is worked as
When place, pole string is for cyclization string, it is also considered as running pole and is simultaneously connected with two buses.
It is exchange outlet string that line string is flowed out in double cross, but line string is flowed out in the exchange non-double cross of outlet string.
There is advantages that the present invention uses alternating-current field cyclization string number finally to break with exchanging outlet number
Road device judges, interlocks the switch being likely to result in last circuit breaker trip, it is to avoid occur that maloperation causes last chopper
Action causes the risk of tripping operation.
Accompanying drawing illustrates:
Fig. 1 is last circuit-breaker status decision logic schematic flow sheet.
Detailed description of the invention:
The following is and the present invention is further illustrated rather than limitation of the present invention.
A, Exchange Station Ore-controlling Role be responsible for gathering each exchange string with exchange the switch of outlet string, disconnecting link state and on deliver to directly
The control of stream pole
System (is called for short PCP)；
Each exchange string that b, DC pole control system (PCP) main frame gather according to Exchange Station Ore-controlling Role with exchange outlet string
Switch, disconnecting link state involutive ring string number carry out logical judgment, last circuit-breaker status decision logic flow process with exchanging outlet number
If schematic diagram is as it is shown in figure 1, cyclization string number=1, outlet number=1, then carries out the bus exchanging outlet connection and be connected with running pole
Bus be whether the judgement of same root bus；If with root bus, then logical judgment result is: exchange outlet string: do not allow to draw
Open；Cyclization string: when cyclization string is common string, it is allowed to pull open；Other situations do not allow to pull open.If different root buses, then logic
Judged result is: exchange outlet string: do not allow to pull open；Cyclization string: do not allow to pull open.This instruction by fieldbus by direct current pole
Ore-controlling Role is sent to each cyclization string and exchanges the Exchange Station Ore-controlling Role at outlet string place；
C, each Exchange Station Ore-controlling Role receive the instruction that DC pole control system is sent, each Exchange Station Ore-controlling Role by fieldbus
The wiring of each cyclization string or exchange outlet string place string is judged by program, and often string Exchange Station Ore-controlling Role program carries out this string
Type judges (exchange outlet string, cyclization string), if cyclization string, judge the most again cyclization string type (common string, exchange outlet string,
Pole connects string, exchange outlet string & pole connects string, line string is flowed out in double cross).When cyclization string number=1, during outlet number=1, if this string is
Non-cyclization string, then judge that exchange outlet is connected to the switch of process on bus, do not allow to pull open；If this string is cyclization string: as
Common string, then on this string, all of switch does not allows to pull open；Go here and there as connected for exchange outlet string but non-alternating outlet string & pole,
Then judge that exchange outlet is connected to run the switch of place, pole bus process, do not allow to pull open；As connected string but non-alternating for pole
Outlet string & pole connects string, then judge that running pole is connected to exchange the switch of outlet place bus process, does not allows to pull open；As for
Exchange outlet string & pole connects string, then (exchange string typically has 3 switches, and one of them is breaker in middle, remains two and is to exchange string
Limit switchs) breaker in middle do not allows to pull open.
Claims (7)
1. avoid maloperation to cause the method for discrimination that last chopper logic trips for one kind, it is characterised in that the method include with
Lower step:
A, Exchange Station Ore-controlling Role be responsible for gathering each exchange string with exchange the switch of outlet string, disconnecting link state and on deliver to direct current pole
Ore-controlling Role；
Each exchange that b, DC pole control system main frame gather according to Exchange Station Ore-controlling Role is gone here and there and exchanges the switch of outlet string, disconnecting link
State involutive ring string number carries out logical judgment with exchanging outlet number, carries out last chopper by cyclization string number with exchanging outlet number
Judge, it is judged that whether have exchange outlet on bus and run whether pole is connected on bus, and each exchange is gone here and there and exchanged out
The switch of line string carries out operation interlocking, sends according to different alternating-current field wiring and forbids pulling open or allow to pull open this cyclization string switch
Or the instruction of exchange outlet string switch；As being judged as, last breaker actuation then trips locking direct current；This instruction is total by scene
Line is sent to each cyclization string and the Exchange Station Ore-controlling Role exchanging outlet string place by DC pole control system；
C, each Exchange Station Ore-controlling Role receive the instruction that DC pole control system is sent, each Exchange Station Ore-controlling Role program by fieldbus
Wiring to each cyclization string or exchange outlet string place string judges, finally judges that one of them switch in this string is
Last chopper, forbids pulling open this switch on this string.
The most according to claim 1 avoiding maloperation to cause the method for discrimination that last chopper logic trips, its feature exists
It is provided with following determining program: the determining program of cyclization string number, the judgement of cyclization string type in, described DC pole control system main frame
Program, run the determining program of the close bus in pole, run that pole is connected to the determining program of certain root bus, exchange outlet connects
Whether the bus connected to the determining program of certain root bus, exchange outlet and the bus that is connected of operation pole are the judgement of same root bus
Program, exchange outlet number determining program, exchange outlet are connected to run the determining program of switch of place, pole bus process, operation
The bus that pole is connected to exchange the determining program of the switch of outlet place bus process, exchange outlet connects is close with operation pole institute
The determining program of the identical number of bus, each exchange outlet whether be connected to the determining program of identical bus；Described cyclization string
Type includes commonly going here and there, exchanging outlet string, pole connection string, exchange outlet string & pole connection string, double cross outflow line string.
The most according to claim 1 avoiding maloperation to cause the method for discrimination that last chopper logic trips, its feature exists
In, each pole of running configures identical determining program, judges the last circuit-breaker status of this operation pole respectively, and outlet logic is "or"
Logic.
The most according to claim 2 avoiding maloperation to cause the method for discrimination that last chopper logic trips, its feature exists
In, in the extremely last chopper determining program of each operation, to when running place, pole string for " cyclization string ", then conduct " commonly string " is carried out
Consider；It is " exchange outlet string & pole connects string " to running place, pole string, then accounts for as " exchanging outlet string ".
The most according to claim 2 avoiding maloperation to cause the method for discrimination that last chopper logic trips, its feature exists
In, when string is not only to exchange outlet string but also is cyclization string, this string outlet logic is "or" logic.
The most according to claim 2 avoiding maloperation to cause the method for discrimination that last chopper logic trips, its feature exists
In, when exchanging outlet place string for cyclization string, then it is assumed that exchange outlet is simultaneously connected with two buses；In like manner, when running pole institute
When string is for cyclization string, it is also considered as running pole and is simultaneously connected with two buses.
The most according to claim 2 avoiding maloperation to cause the method for discrimination that last chopper logic trips, its feature exists
In, it is exchange outlet string that line string is flowed out in double cross, but line string is flowed out in the exchange non-double cross of outlet string.
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| CN201610665523.7A CN106169812B (en) | 2016-08-12 | 2016-08-12 | A kind of method of discrimination for avoiding maloperation from leading to last breaker logic tripping |
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| CN201610665523.7A CN106169812B (en) | 2016-08-12 | 2016-08-12 | A kind of method of discrimination for avoiding maloperation from leading to last breaker logic tripping |
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| CN108832598A (en) * | 2018-05-23 | 2018-11-16 | 南京南瑞继保电气有限公司 | A kind of method, apparatus and computer storage medium of last breaker protection judgement |
| CN114552546A (en) * | 2022-03-04 | 2022-05-27 | 广东电网有限责任公司广州供电局 | Cross-station tripping method, system, equipment and medium applied to flexible direct current transmission system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832598A (en) * | 2018-05-23 | 2018-11-16 | 南京南瑞继保电气有限公司 | A kind of method, apparatus and computer storage medium of last breaker protection judgement |
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| CN114552546A (en) * | 2022-03-04 | 2022-05-27 | 广东电网有限责任公司广州供电局 | Cross-station tripping method, system, equipment and medium applied to flexible direct current transmission system |
| CN114552546B (en) * | 2022-03-04 | 2023-08-15 | 广东电网有限责任公司广州供电局 | Cross-station tripping method, system, equipment and medium applied to flexible direct current transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106169812B (en) | 2019-03-12 |
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