CN105514940B - The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group and device - Google Patents
The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group and device Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to the adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group and device, including judge that the first path, second of path can turn on, then valve group is without last breaker；If having any one to turn in the first path, second of path, the path between circuit and valve group is traveled through, if the path can turn on, count value is increased to each breaker on the path；Judge the maximum breaker of count value for last breaker.The present invention relates to the adaptive discrimination function of the last breaker of valve group in extra-high voltage direct-current transmission engineering, can effectively solve alternating-current field exchange interval and progressively access or exchange string progressively to access, or valve group last breaker logic incorrect situation when alternating current inlet wire progressively accesses.
Description
Technical field
The present invention relates to a kind of adaptive method of discrimination of last breaker of ultra-high voltage converter station valve group.
Background technology
The last circuit breaker trip unit of HVDC transmission system Inverter Station is very important current conversion station straight-flow system control
Control equipment, mainly prevent when straight-flow system from running Inverter Station AC load it is all off suddenly cause current conversion station AC and its its
Its part overvoltage, cause the apparatus insulated damage of AC and DC.
The alternating-current field of extra-high voltage direct-current engineering is divided into double-bus structure, and alternating-current field is divided into double-bus structure (1M and 2M), double
Formed between bus by going here and there 3/2 wiring more.Typically extended in current conversion station first stage of construction, part exchange string or line segregation for future
And design, physical cabling is not present in future string or future interval.It must take into consideration following string in program or when interval is gradually added, valve
The last breaker logic of group can meet to require.
Because future string, future interval are more, various combinations are more, and programmed logic programming becomes complex.Change
Stream station is to put into design by the same period in program there is also the situation that circuit is put into by stages, often runs into such case, valve group is most
For breaker logic there will be problem, logic Modification is more, and not easily passs through verification experimental verification at the scene, many hidden danger be present afterwards.
The content of the invention
It is an object of the invention to provide a kind of adaptive method of discrimination of last breaker of ultra-high voltage converter station valve group and device,
To solve the problems, such as that last breaker logic is excessively complicated in future string, future interval or built by separate periods.
To achieve the above object, the solution of the present invention includes：
The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group, step are as follows：
1) if for circuit with valve group with a string, path is divided into two kinds：The first path is by the wiring of this string 3/2
Between breaker path, second path is the path by other strings；
If for circuit with valve group not with a string, path is divided into four kinds：The first path, second path be merely through
Circuit and where valve group two paths that are going here and there and differing；
2) if the first path, second of path can turn on, valve group is without last breaker；If the first path,
There is any one to turn in second of path, then travel through the path between circuit and valve group, if the path can turn on,
Count value is increased to each breaker on the path；
3) judge the maximum breaker of count value for last breaker.
If for circuit with valve group not with a string, path is divided into four kinds：The third, the 4th kind be by other strings road
Footpath.
When increasing count value to each breaker on path, also to increasing path count value；Count value is equal to path count
The breaker of value is last breaker.
The adaptive discriminating gear of the last breaker of ultra-high voltage converter station valve group, including：
1) Type division module：If for circuit with valve group with a string, path is divided into two kinds：The first path is process
The path of breaker among the wiring of this string 3/2, second of path are the path by other strings；
If for circuit with valve group not with a string, path is divided into four kinds：The first path, second path be merely through
Circuit and where valve group two paths that are going here and there and differing；
2) traversal and counting module：If the first path, second of path can turn on, valve group is without last open circuit
Device；If having any one to turn in the first path, second of path, the path between circuit and valve group is traveled through, if
The path can turn on, then increase count value to each breaker on the path；
3) discrimination module：Judge the maximum breaker of count value for last breaker.
If for circuit with valve group not with a string, path is divided into four kinds：The third, the 4th kind be by other strings road
Footpath.
When increasing count value to each breaker on path, also to increasing path count value；Count value is equal to path count
The breaker of value is last breaker.
The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group of the present invention, can be exchanged according to current conversion station
The following string in field or future interval built by separate periods, the last breaker logic discrimination of valve group can adaptive alternating-current field physical cabling modes.
, can be actual according to alternating-current field particularly in the case where the following string of alternating-current field or interval are gradually added or alternating current circuit is gradually added
The last breaker of configuring condition automatic discrimination valve group.Adaptation function in FPT (functional trial)/DPT, (try by dynamic property
Test) verify in pilot system, various situations are verified without Operation switch at the scene, have saved substantial amounts of man power and material, only
Need to by alternating-current field actual conditions configuration feature block LAST_CB relevant parameters, can online modification, without control system have a power failure.This hair
It is bright to be examined by analogue system, without practical operation at the scene, various operational risks can be effectively avoided, system operation is brought
Highly important effect.Write control logic and control system power failure programming program again without control system, therefore to extra-high
Voltage electric grid run unit brings huge economic benefit.
Brief description of the drawings
Fig. 1 is the adaptive discrimination function block schematic diagram of last breaker；
Fig. 2 be valve group with circuit in identical string；
Fig. 3 be valve group from circuit in different strings, including Fig. 4-Figure 10；
Fig. 4 is that circuit is being spaced A paths in interval C, valve group；
Fig. 5 is that circuit is being spaced C paths in interval A, valve group；
Fig. 6 is valve group and circuit in different interval path type；
Fig. 7 is that circuit is being spaced A paths (same to Fig. 6) in interval C, valve group；
Fig. 8 is that circuit is being spaced C paths in interval A, valve group；
Fig. 9 is that circuit is being spaced A paths in interval A, valve group；
Figure 10 is that circuit is being spaced C paths in interval C, valve group.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
The present invention basic scheme be：The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group, step are as follows：
1) if for circuit with valve group with a string, path is divided into two kinds：The first path is by the wiring of this string 3/2
Between breaker path, second path is the path by other strings；
If for circuit with valve group not with a string, path is divided into four kinds：The first path, second path be merely through
Circuit and where valve group two paths that are going here and there and differing；
2) if the first path, second of path can turn on, valve group is without last breaker；If the first path,
There is any one to turn in second of path, then travel through the path between circuit and valve group, if the path can turn on,
Count value is increased to each breaker on the path；
3) judge the maximum breaker of count value for last breaker.
Introduced above, the alternating-current field of extra-high voltage direct-current engineering is divided into double-bus structure, 3/2 is connect between double-bus by going here and there more
Line forms.
As Fig. 2 be valve group with circuit in identical string.In this case, such as Fig. 4, valve group with circuit in identical string, solid line
Arrow represents the path by breaker among 3/2 wiring, i.e. the first path, is designated as PATH1, the first path only has one
Bar；Dotted arrow represents the path by other strings, i.e. second of path, is designated as PATH2.Obvious PATH2 includes mulitpath
(identical with the quantity of other strings).Path representation supply line.
As Fig. 3 be valve group from circuit in different strings.Such as Fig. 6, solid arrow represents the first path, is designated as PATH1；Dotted line
Arrow represents second of path, is designated as PATH2；In this case, the first path and only one, second of path, and the
A kind of path, second path are being to get lines crossed road merely through two where circuit and valve group.The third, the 4th kind of path be by it
The path that it goes here and there, is designated as PATH3, PATH4, it is clear that the third, the 4th kind of path be more than one article, it is related to other string quantity.
Two kinds of situations of summary, if the first path, second of path can turn on, valve group is without last open circuit
Device；If having any one to turn in the first path, second of path, the path between circuit and valve group is traveled through, if
The path can turn on, then increase count value to each breaker on the path；The maximum breaker of count value is last open circuit
Device.
Count value is bigger, illustrates that more supply lines turned on by the breaker, passes through the most open circuit of circuit
Device is last breaker.
The above method ultimately to be formed functional module, i.e., is run with program form.So specifically, one kind is given below
The embodiment of sequencing.
Alternating-current field typically has some strings (n≤10), and the present invention considers that is, BAY_NUM could be arranged to (1- by the string of maximum 10
10), valve group is maximum by 4 considerations, and often string is A, and tri- intervals of B, C, each interval can access valve group, circuit or miscellaneous equipment
(big group of wave filter, electricity consumption of standing etc.), it is specified that valve group type is 1, circuit types 2, other types are 0.Alternating-current field 1-10 strings are worked as
Preceding switch conjunction state access STA_ACT (double word type), the accessed type input BAY_1x-BAY_10x in each interval are (whole
Shape), the currently practical string number input BAY_NUM of alternating-current field, STA_BEF (double word type) is previous cycle alternating-current field on off state,
For internal logic, work as STA_ACT=STA_BEF, output state before keeping, as STA_ACT ≠ STA_BEF, functional block is just
Which switch of energy automatic discrimination alternating-current field is the last breaker of corresponding valve group, and LCB_Gx (double word type) is valve group x related most
The exchange field switch corresponding to breaker, functional block are shown in Fig. 1 afterwards.
With in figure below, BAYn, BAYm, gone here and there by valve group, circuit, BAYk is other strings, and A, B, C represent interval, such as
BAYn_B represents string BAYn B intervals, that is, the breaker B.Q0 at B intervals；Other expressions are analogized, and are no longer introduced one by one.
1, valve group and circuit only have two types, path type (solid line and void from circuit to valve group path in identical string
Line), see Fig. 4.
1.1 circuits are being spaced A paths in interval C, valve group：
PATH1 (solid line)=BAYn_B (n=1-10)
PATH2 (dotted line)=BAYn_C＆BAYk＆BAYn_A (n=1-10, k=1-10, n ≠ k)
This valve group of IF PATH1＆PATH2=1 carries out next valve group logic judgment, otherwise by following without last breaker
Principle：Path counter increases by 1, and each switch counts device increases by 1 on path.
IF PATH1=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
IF PATH2=1
COUNTER_BAYn_C+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_A+=1
PATH_NUM+=1
1.2 circuits are being spaced C paths, are seeing Fig. 5 in interval A, valve group, only need to be m in 1.1 path according to symmetry principle
Go here and there A, C is exchanged with each other：
PATH1 (solid line)=BAYn_B (n=1-10)
PATH2 (dotted line)=BAYn_A＆BAYk＆BAYn_C (n=1-10, k=1-10, n ≠ k)
This valve group of IF PATH1＆PATH2=1 carries out next valve group logic judgment, otherwise by following without last breaker
Principle：Path counter increases by 1, and each switch counts device increases by 1 on path.
IF PATH1=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
IF PATH2=1
COUNTER_BAYn_A+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_C+=1
PATH_NUM+=1
2, valve group and circuit only have four types, path type (solid line, dot-dash from circuit to valve group path in different strings
Line, dotted line, fine line), see Fig. 6.
2.1 circuits are being spaced A paths, are seeing Fig. 7 in interval C, valve group：
PATH1 (solid line)=BAYm_B＆BAYm_A＆BAYn_A (n, m=1-10, m ≠ n)
PATH2 (dotted line)=BAYm_C＆BAYn_C＆BAYn_B (n, m=1-10, m ≠ n)
PATH3 (chain-dotted line)=BAYm_C＆BAYk＆BAYn_A (n, m, k=1-10, m ≠ n ≠ k)
PATH4 (fine line)=BAYm_B＆BAYm_A＆BAYk＆BAYn_C＆BAYn_B (n, m, k=1-10, m ≠ n ≠ k)
If path is present,
This valve group of IF PATH1＆PATH2=1 carries out next valve group logic judgment, otherwise by following without last breaker
Principle：Path counter increases by 1, and each switch counts device increases by 1 on path.
IF PATH1=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_A+=1
COUNTER_BAYn_A+=1
PATH_NUM+=1
IF PATH2=1
COUNTER_BAYm_C+=1
COUNTER_BAYn_C+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
IF PATH3=1
COUNTER_BAYm_C+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_A+=1
PATH_NUM+=1
IF PATH4=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_A+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_C+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
2.2 circuits are being spaced C paths, are seeing Fig. 8 in interval A, valve group, and according to symmetry principle, BAYk is constant, only need to be 2.1
Path m, n string A, C is exchanged with each other：
PATH1 (solid line)=BAYm_A＆BAYn_A＆BAYn_B (n, m=1-10, m ≠ n)
PATH2 (dotted line)=BAYm_B＆BAYm_C＆BAYn_C (n, m=1-10, m ≠ n)
PATH3 (chain-dotted line)=BAYm_B＆BAYm_C＆BAYk＆BAYn_A＆BAYn_B (n, m, k=1-10, m ≠ n ≠ k)
PATH4 (fine line)=BAYm_A＆BAYk＆BAYn_C (n, m, k=1-10, m ≠ n ≠ k)
This valve group of IF PATH1＆PATH2=1 carries out next valve group logic judgment, otherwise by following without last breaker
Principle：Path counter increases by 1, and each switch counts device increases by 1 on path.
IF PATH1=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_C+=1
COUNTER_BAYn_C+=1
PATH_NUM+=1
IF PATH2=1
COUNTER_BAYm_A+=1
COUNTER_BAYn_A+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
IF PATH3=1
COUNTER_BAYm_A+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_C+=1
PATH_NUM+=1
IF PATH4=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_C+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_A+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
2.3 circuits are being spaced A paths, are seeing Fig. 9 in interval A, valve group：
PATH1 (solid line)=BAYm_A＆BAYn_A (n, m=1-10, m ≠ n)
PATH2 (dotted line)=BAYm_B＆BAYm_C＆BAYn_C＆BAYn_B (n, m=1-10, m ≠ n)
PATH3 (chain-dotted line)=BAYm_B＆BAYm_C＆BAYk＆BAYn_A (n, m, k=1-10, m ≠ n ≠ k)
PATH4 (fine line)=BAYm_A＆BAYk＆BAYn_C＆BAYn_B (n, m, k=1-10, m ≠ n ≠ k)
This valve group of IF PATH1＆PATH2=1 carries out next valve group logic judgment, otherwise by following without last breaker
Principle：Path counter increases by 1, and each switch counts device increases by 1 on path.
IF PATH1=1
COUNTER_BAYm_A+=1
COUNTER_BAYn_A+=1
PATH_NUM+=1
IF PATH2=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_C+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_A+=1
PATH_NUM+=1
IF PATH3=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_C+=1
COUNTER_BAYn_C+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
IF PATH4=1
COUNTER_BAYm_A+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_C+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
2.4 circuits are being spaced C paths, are seeing Figure 10 in interval C, valve group, and according to symmetry principle, BAYk is constant, only need to be 2.3
Path m, n string A, C is exchanged with each other：
PATH1 (solid line)=BAYm_B＆BAYm_A＆BAYn_A＆BAYn_B (n, m=1-10, m ≠ n)
PATH2 (dotted line)=BAYm_C＆BAYn_C (n, m=1-10, m ≠ n)
PATH3 (chain-dotted line)=BAYm_C＆BAYk＆BAYn_A＆BAYn_B (n, m, k=1-10, m ≠ n ≠ k)
PATH4 (fine line)=BAYm_B＆BAYm_A＆BAYk＆BAYn_C (n, m, k=1-10, m ≠ n ≠ k)
This valve group of IF PATH1＆PATH2=1 carries out next valve group logic judgment, otherwise by following without last breaker
Principle：Path counter increases by 1, and each switch counts device increases by 1 on path.
IF PATH1=1
COUNTER_BAYm_C+=1
COUNTER_BAYn_C+=1
PATH_NUM+=1
IF PATH2=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_A+=1
COUNTER_BAYn_A+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
IF PATH3=1
COUNTER_BAYm_B+=1
COUNTER_BAYm_A+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_C+=1
PATH_NUM+=1
IF PATH4=1
COUNTER_BAYm_C+=1
COUNTER_BAYk_A+=1
COUNTER_BAYk_B+=1
COUNTER_BAYk_C+=1
COUNTER_BAYn_A+=1
COUNTER_BAYn_B+=1
PATH_NUM+=1
Because k values are more, all paths are not listed.By above method, circuit can be obtained and arrive valve group
Number of path, the counter that alternating-current field each switchs, so as to be compared, obtaining alternating-current field, which is switched as corresponding valve group most
Breaker afterwards.
IF COUNTER_BAYx_A=PATH_NUM, (x=1-10)
BAYx_A, it is the last breaker of valve group
IF COUNTER_BAYx_B=PATH_NUM, (x=1-10)
BAYx_B, it is the last breaker of valve group
IF COUNTER_BAYx_C=PATH_NUM (x=1-10)
BAYx_C=PATH_NUM
BAYx_A, BAYx_B, BAYx_C are the last breaker of valve group, and LCB_Gx corresponding positions are 1, and otherwise corresponding positions are 0.
In above method, in order to find out the maximum breaker of count value, employ increases meter to each breaker on path
During numerical value, also to the mode of increase path count value；Take count value be equal to path count value breaker be last breaker.Make
For other embodiment, other manner can also be used to find out the maximum breaker of count value.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, for those of ordinary skill in the art, according to the teachings of the present invention, designs various changes
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
The change, modification, replacement and modification that embodiment is carried out are still fallen within protection scope of the present invention.
Claims (4)
1. the adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group, it is characterised in that step is as follows：
1) if for circuit with valve group with a string, path is divided into two kinds：The first path is by being interrupted in the wiring of this string 3/2
The path of road device, second of path are the path by other strings；
If for circuit with valve group not with a string, path is divided into four kinds：The first path, second of path are merely through circuit
With two strings where valve group and the paths that differ, the third, the 4th kind be path by other strings；
2) if the first path, second of path can turn on, valve group is without last breaker；If the first path, second
Kind has any one to turn in path, then the path between circuit and valve group is traveled through, if the path can turn on, to this
Each breaker increase count value on path；
3) judge the maximum breaker of count value for last breaker.
2. the adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group according to claim 1, it is characterised in that
When increasing count value to each breaker on path, also to increasing path count value；Count value is equal to the open circuit of path count value
Device is last breaker.
3. the adaptive discriminating gear of the last breaker of ultra-high voltage converter station valve group, it is characterised in that including：
1) Type division module：If for circuit with valve group with a string, path is divided into two kinds：The first path is by this string
The path of breaker among 3/2 wiring, second of path are the path by other strings；
If for circuit with valve group not with a string, path is divided into four kinds：The first path, second of path are merely through circuit
With two strings where valve group and the paths that differ, the third, the 4th kind be path by other strings；
2) traversal and counting module：If the first path, second of path can turn on, valve group is without last breaker；If
There is any one to turn in the first path, second of path, then the path between circuit and valve group is traveled through, if the path
It can turn on, then each breaker on the path be increased
Add count value；
3) discrimination module：Judge the maximum breaker of count value for last breaker.
4. the adaptive discriminating gear of the last breaker of ultra-high voltage converter station valve group according to claim 3, it is characterised in that
When increasing count value to each breaker on path, also to increasing path count value；Count value is equal to the open circuit of path count value
Device is last breaker.
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| CN201510825036.8A CN105514940B (en) | 2015-11-24 | 2015-11-24 | The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group and device |
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| CN201510825036.8A CN105514940B (en) | 2015-11-24 | 2015-11-24 | The adaptive method of discrimination of the last breaker of ultra-high voltage converter station valve group and device |
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