CN104657618B - A kind of traction substation off-the-line fault modeling method and solution column voltage determine method - Google Patents
A kind of traction substation off-the-line fault modeling method and solution column voltage determine method Download PDFInfo
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Abstract
The invention discloses a kind of traction substation off-the-line fault modeling method, including presetting N number of traction substation, M up locomotive and L a descending locomotive, the both ends of each traction substation, up locomotive and descending locomotive respectively set a node, all nodes are numbered, node serial number is stored to corresponding array successively according to the ascending order of place on line coordinate where node；Transadmittance between the self-admittance of each node stored respectively in calculating array and each node；According to N number of traction substation equivalent current source amplitude generation node current column vector I；Set the node admittance network equation of electric power system mathematical modeling, the invention also discloses a kind of traction substation solution column voltage to determine method, influence of the off-the-line failure to completely all traction substations is considered, so that traction substation off-the-line failure mathematical modeling more conforms to the truth of orbit traffic direct current traction substation off-the-line, obtained result is more accurately and reliably.
Description
Technical field
The present invention relates to city rail electric power system technical field, is built more particularly to a kind of traction substation off-the-line failure
Mould method and solution column voltage determine method.
Background technology
With the growth developed rapidly with urban transportation amount of Chinese national economy, urban track traffic is as a kind of emerging
The vehicles because its high speed, it is safe and reliable, punctual, convenient, pollution-free the advantages that obtained in China more and more should
With.The important component that Feeding System of Urban Rail Transit transports as city railway, it is the dynamic of urban track traffic operation
Power source is, it is necessary to meet the basic demand of security, reliability, practicality, economy and advance, therefore, city rail
Whether the design of traffic electric power system is rationally particularly important.
Urban track traffic DC traction power-supply system short trouble mathematical modeling is that Feeding System of Urban Rail Transit is set
The important content of meter.The safety and reliability of Feeding System of Urban Rail Transit is realized, it is necessary that DC traction becomes
The reasonability of electric institute's capacity, the loss of all fronts supply conductor voltage, rail above earth potential etc., and DC traction substation off-the-line failure
Mathematical modeling is exactly DC traction substation Capacity design, supply conductor voltage costing bio disturbance, the calculating of rail above earth potential etc. must
One of basic condition that must possess.
Existing urban track traffic DC traction substation solution column voltage determines method using equivalent simplified circuit
Figure method, this method, for the purpose for simplifying modeling, only consider off-the-line event when carrying out DC traction substation off-the-line calculation of fault
The influence of the barrier traction substation, Traction networks adjacent to splitting point, but actual Traction networks are the feed lines by electric substation
It is connected together, if off-the-line occurs for somewhere traction substation, completely each Rectification Power Factor and Traction networks can be impacted.Therefore
Equivalent simplified circuit figure method can not access completely each traction substation, the electrical quantity of Traction networks, and result of calculation after off-the-line
Error is larger.
Therefore, how effectively to provide a kind of Mathematical Modeling Methods that can obtain accurate off-the-line voltage value is this area
Technical staff needs to solve the problems, such as at present.
The content of the invention
It is an object of the invention to provide a kind of traction substation off-the-line fault modeling method, considers completely traction power transformation
To solve column voltage influence so that DC traction substation off-the-line failure mathematical modeling more conforms to urban track traffic
The truth of DC traction substation off-the-line, obtained result is more accurately and reliably；It is a further object of the present invention to provide one
Kind traction substation solution column voltage determines method.
In order to solve the above technical problems, the invention provides a kind of traction substation off-the-line fault modeling method, including：
Step A1：Preset N number of traction substation, M up locomotives and L a descending locomotive, each traction substation, on
The both ends of row locomotive and descending locomotive respectively set a node, the position coordinates of the traction substation of the circuit head end
For the origin of coordinates, the direction that the circuit head end points to end is reference axis positive direction, according to position coordinates from small to large and
The order of up rail is compiled to the node at N number of traction substation both ends after elder generation's upcoming contact net at same position coordinate
Number, its Serial Number Range is 1 to 2N, then according to position coordinates from small to large and at same position coordinate after elder generation's upcoming contact net
The order of up rail continues to number to the node at the M up locomotive both ends, and its Serial Number Range is 2N+1 to 2N+
2M；According still further to position coordinates from small to large and at same position coordinate first after descending contact net the order of descending rail to described
The node at L descending locomotive both ends continues to number, and its Serial Number Range is 2N+2M+1 to 2N+2M+2L；
Step B1：Node point on respectively described upcoming contact net, descending contact net, up rail and descending rail
With an array, by the node serial number according to circuit where the node determine corresponding to array, and according to position coordinates by
It is small to be stored successively to corresponding array to big order；
Step C1：Structure track electric power system normal condition fixed topology equivalent electric corresponding with the node array
Road；
Step D1：Calculate respectively in the track electric power system normal condition fixed topology equivalent circuit, the number
Transadmittance between the self-admittance of each node stored in group and each node, and result is stored to bus admittance matrix Y；
Step E1：According to N number of traction substation equivalent current source amplitude generation node current column vector I；
Step F1：Set the node admittance network equation of track electric power system normal condition mathematical modeling：Y*U=I,
Wherein, the U is the voltage of each node of the DC traction power-supply system, for amount to be asked.
A kind of traction substation off-the-line fault modeling method provided according to the invention described above, present invention also offers one kind
Traction substation solution column voltage determines method, the rail that this method obtains according to such as above-mentioned traction substation off-the-line fault modeling method
Road electric power system normal condition mathematical modeling, this method include：
Step A2：Receive position of failure point and off-the-line type corresponding to off-the-line traction substation；
Step B2：It is determined that according in the track electric power system normal condition mathematical modeling, with the position of failure point pair
The node serial number answered；
Step C2：Correct the node of the track electric power system normal condition mathematical modeling respectively according to the off-the-line type
Electricity corresponding to node serial number described in admittance value corresponding to node serial number described in admittance matrix Y and node current column vector I
Flow valuve, obtain revised admittance matrix Y ' and node current column vector I '；
Step D2：Using the revised admittance matrix Y ' and node current column vector I ', according to the off-the-line class
Calculation corresponding to type, calculate and obtain all solutions column voltage on circuit.
Preferably, the node serial number for presetting off-the-line traction substation both ends is respectively k, k+1, wherein, described k, k+1 1
Arbitrary integer into 2N, when big two-side feeding after off-the-line type is off-the-line, step C2With step D2It is specially respectively：
Step C2：Shunt admittance value Y corresponding to the off-the-line traction substation is made respectivelyk,k+1=0, equivalent current source amplitude
Ik=0, obtain revised admittance matrix Y ' and node current column vector I '；
Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network
Equation, obtain all solutions column voltage on circuit.
Preferably, the node serial number for presetting off-the-line traction substation both ends is respectively k, k+1, wherein, described k, k+1 1
Arbitrary integer into 2N, the single side feeding and be unilateral after head end or end traction substation off-the-line after off-the-line type is off-the-line
During power supply, step C2With step D2It is specially respectively：
Step C2：Shunt admittance value Y corresponding to the off-the-line traction substation is made respectivelyk,k+1=0, equivalent current source amplitude
Ik=0；Obtain revised admittance matrix Y ' and node current column vector I '；
Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network
Equation, obtain all solutions column voltage on circuit.
Preferably, the node serial number for presetting off-the-line traction substation both ends is respectively k, k+1, wherein, described k, k+1 1
Arbitrary integer into 2N, the single side feeding and be unilateral confession after traction substation off-the-line in the middle part of circuit after off-the-line type is off-the-line
When electric, step C2With step D2It is specially respectively：
Step C2：If a upper node serial number adjacent with the off-the-line traction substation node is respectively：Upcoming contact
Net node a, up rail node b, descending contact net node c, descending rail node d；Next node is numbered：It is up
Contact net node e, up rail node f, descending contact net node g, descending rail node h, the off-the-line traction is made to become respectively
Equivalent current source amplitude I corresponding to electricityk=0, shunt admittance value Yk,k+1=0, and the off-the-line traction substation node and its
The transadmittance of a upper node for affiliated node array is 0, i.e. Yk,a=0；Yk,c=0；Yk+1,b=0；Yk+1,d=0 or institute
The transadmittance for stating off-the-line traction substation node and the next node of its affiliated node array is 0；That is Yk,e=0；Yk,g=
0；Yk+1,f=0；Yk+1,h=0, obtain revised admittance matrix Y ' and node current column vector I '；
Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network
Equation, obtain all solutions column voltage on circuit.
Preferably, the node serial number for presetting off-the-line traction substation both ends is respectively k, k+1, wherein, described k, k+1 1
Arbitrary integer into 2N, when single power set running two-side feeding after off-the-line type is off-the-line, step C2With step D2It is specific respectively
For：
Step C2：Shunt admittance value Y ' corresponding to the off-the-line traction substation is made respectivelyk,k+1=Yk,k+1/ 2, equivalent current
Source amplitude I 'k=Ik/2；Obtain revised admittance matrix Y ' and node current column vector I '；
Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network
Equation, obtain all solutions column voltage on circuit.
Traction substation off-the-line fault modeling method disclosed by the invention, it is comprehensive based on the traction substation of all fronts
Influence of all fronts traction substation to solution column voltage is considered, so that DC traction substation off-the-line failure mathematical modeling is more
Meet the truth of urban track traffic DC traction substation off-the-line, obtained result is more accurately and reliably.Utilize the mould
Type, it can realize and judge in the case of the arbitrarily input of traction substation solution column position, type and select corresponding solution column count
Program, there is higher flexibility and general applicability.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of flow chart of the process of traction substation off-the-line fault modeling method provided by the invention；
Fig. 2 is a kind of electric power system normal condition fixed topology equivalent circuit diagram provided by the invention；
Fig. 3 is the flow chart for the process that a kind of traction substation solution column voltage provided by the invention determines method；
Fig. 4 is the flow chart for the process that another traction substation solution column voltage provided by the invention determines method.
Embodiment
The core of the present invention is to provide a kind of traction substation off-the-line fault modeling method, considers completely traction power transformation
To solve column voltage influence so that DC traction substation off-the-line failure mathematical modeling more conforms to urban track traffic
The truth of DC traction substation off-the-line, obtained result is more accurately and reliably；Another core of the present invention is to provide one
Kind traction substation solution column voltage determines method.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Before the present invention is introduced, inventor should be noted illustrates traction power transformation provided by the invention in inventor
Before institute's off-the-line fault modeling method, on the premise of engineering calculation required precision is met, following basic assumption is first carried out：
(a) assume that the AC voltage of completely each traction substation is identical and stably, i.e., do not consider AC system change pair
The influence of calculating；
(b) assume completely each traction substation transformer and rectifier being considered as current source and admittance branch circuit parallel connection；
(c) assume Traction networks system for symmetrically structure, whole Traction networks system have consistent resistance per unit length；
(d) coordinate of Traction networks distributing point is considered as traction substation position coordinates, and thinks Traction networks distributing point with returning
Flow point is in same coordinate position；
(e) using start site position coordinates as 0 point, uplink and downlink position coordinates is as with reference to calculating；
(f) locomotive is considered as power source, locomotive is provided in the position at certain moment, power by traction result of calculation.
Embodiment one
Fig. 1 is refer to, Fig. 1 is a kind of flow of the process of traction substation off-the-line fault modeling method provided by the invention
Figure, this method include：
Step s101：Default N number of traction substation, M up locomotive and L a descending locomotive, each traction substation,
The both ends of up locomotive and descending locomotive respectively set a node, and the position coordinates of the traction substation of circuit head end is
The origin of coordinates, the direction that circuit head end points to end is reference axis positive direction, according to position coordinates from small to large and same position
The node at N number of traction substation both ends is numbered the order for putting up rail after elder generation's upcoming contact net at coordinate, and it is numbered
Scope is 1 to 2N, then the up rail after elder generation's upcoming contact net from small to large and at same position coordinate according to position coordinates
Order the node at M up locomotive both ends is continued to number, its Serial Number Range is 2N+1 to 2N+2M；According still further to position
Coordinate from small to large and at same position coordinate first after descending contact net the order of descending rail to L descending locomotive both ends
Node continues to number, and its Serial Number Range is 2N+2M+1 to 2N+2M+2L；
For convenience of understanding, herein for example, setting the up Traction networks per two neighboring traction substation and up rail
Between a up locomotive of row be present, have one between the descending Traction networks and descending rail per two neighboring traction substation
Descending locomotive is arranged, then refer to Fig. 2, Fig. 2 is that one kind that the present embodiment provides is final available comprising all according to the step
The electric power system normal condition fixed topology equivalent circuit diagram of node, wherein, it is in figure that N number of traction substation is equivalent into N
Individual current source 11,12 ..., 1N and respectively corresponding to N number of shunt admittance branch road, up Traction networks 41, up are also included in figure
Rail 42, descending Traction networks 43, descending rail 44 and M between up Traction networks 41 and up rail 42 equivalent into electricity
The up locomotive 21 in stream source, 22 ..., 2M, L between descending Traction networks 43 and descending rail 44 it is equivalent under current source
Row locomotive 31,32 ..., 3L.
It is worth noting that, same coordinate mentioned here refer to using the position coordinates of the traction substation of circuit head end as
The origin of coordinates, when the direction that circuit head end points to end is reference axis positive direction, the traction of offline road head end in the positive direction becomes
Electricity the coordinate apart from identical node it is identical, it is believed that be a coordinate, such as node 2N+1,2N+2 or 2N+2M+1,2N
+ 2M+2 is just same coordinate.
Step s102：Node distribution respectively on upcoming contact net, descending contact net, up rail and descending rail
One array, by node serial number according to circuit where node determine corresponding to array, and according to ascending suitable of position coordinates
Sequence stores to corresponding array successively；
It is understood that when storage of array is carried out, up Traction networks and descending Traction networks are shared and become in traction
What the node serial number at electric institute both ends, the i.e. 2N-1 of node serial number 1,3,5 ... in Fig. 2, and up rail and descending rail shared
The 2N of node serial number 2,4,6 ....
For example, when the quantity N of traction substation is 2, the quantity M of up locomotive is 3, when the quantity L of descending locomotive is 2,
Then
The array of up Traction networks is (1,5,7,9,3)；
The array of up rail is (2,6,8,10,4)；
The array of descending Traction networks is (1,11,13,3)；
The array of descending rail is (2,12,14,4).
It is worth noting that, the quantity N of the quantity M of traction substation, up locomotive and the quantity L three of descending locomotive
Between there is no any contact, can have a row or more between the up Traction networks and up rail between two neighboring traction substation
Up locomotive is arranged, can also be without up locomotive, similarly, descending Traction networks and descending rail between two neighboring traction substation
Between can have the descending locomotive of one or more columns per page, can also be without descending locomotive, but the arrangement principle of array interior joint numbering is
Identical, stored successively to corresponding array according to the ascending order of position coordinates.
Step s103：Structure track electric power system normal condition fixed topology equivalent electric corresponding with node array
Road；
Row illustrated example in step s101 is continued to use, that is, is set per the up Traction networks between two neighboring traction substation and up
A up locomotive of row between rail be present, between the descending Traction networks between two neighboring traction substation and descending rail often
In the presence of a descending locomotive of row, then i.e. Fig. 2 can be obtained, then is understood：
The array of up traction netting index is (1,2N+1,3 ..., 2N-3,2N+2M-1,2N-1)；
The array of up rail is (2,2N+2,4 ..., 2N-2,2N+2M, 2N)；
The array of descending traction netting index is (1,2N+2M+1,3 ..., 2N+2M+2L-1,2N-1)；
The array of descending rail is (2,2N+2M+2,4 ..., 2N+2M+2L, 2N).
In addition, from above description, the quantity of up locomotive or descending locomotive is different with position, obtained track
Electric power system normal condition fixed topology equivalent circuit is also different.
Step s104：Calculate in track electric power system normal condition fixed topology equivalent circuit, deposited in array respectively
Transadmittance between the self-admittance of each node of storage and each node, and result is stored to bus admittance matrix Y；
It is understood that each element value on bus admittance matrix leading diagonal is the self-admittance of each node, it is each non-
Transadmittance of the element value between each node on leading diagonal.
In addition, because final node serial number is 2N+2M+2L, therefore, admittance matrix Y line number and columns are 2N+2M
+2L；For example, illustrated example above, when the quantity N of traction substation is 2, the quantity M of up locomotive is 3, the number of descending locomotive
When amount L is 2, then final node serial number is that 2N+2M+2L is 14, then the line number of admittance matrix now and columns are 14.
Step s105：According to N number of traction substation equivalent current source amplitude generation node current column vector I；
Step s106：Set the node admittance network equation of track electric power system normal condition mathematical modeling：Y*U=I,
Wherein, U is the voltage of each node of DC traction power-supply system, for amount to be asked.
Track electric power system normal condition mathematics with regard to being obtained in above-mentioned traction substation off-the-line fault modeling method below
Model determines that the application process in method is described in traction substation solution column voltage, certainly, the normal shape of track electric power system
State mathematical modeling just exists after track electric power system mathematical modeling is established for the first time, in the traction substation off-the-line carried out afterwards
Can directly it be applied in voltage determination process, it is not necessary to carried out every time before carrying out multiple traction substation solution column voltage and determining
Electric power system mathematical modeling.
Fig. 3 is refer to, Fig. 3 is the flow for the process that a kind of traction substation solution column voltage provided by the invention determines method
Figure, this method include：
Step s201：Receive position of failure point and off-the-line type corresponding to off-the-line traction substation；
It is understood that obtaining off-the-line malfunctioning node position corresponding to off-the-line traction substation first, off-the-line traction becomes
Electricity can be any one traction substation of circuit in electric power system.
Step s202：It is determined that according in track electric power system normal condition mathematical modeling, section corresponding with position of failure point
Point numbering；
It is understood that when it is determined that during off-the-line traction substation position, then according to track electric power system normal condition number
Learn model determination and the node serial number of off-the-line traction substation position correspondence.
Step s203：Correct the node admittance square of track electric power system normal condition mathematical modeling respectively according to off-the-line type
Current value corresponding to admittance value corresponding to battle array Y interior joint numberings and node current column vector I interior joints numbering, after obtaining amendment
Admittance matrix Y ' and node current column vector I '；
It is understood that traction substation off-the-line type is different, corresponding bus admittance matrix Y and node current row
Vectorial I makeover process is also different, it is necessary to be entered according to actual conditions to bus admittance matrix Y and node current column vector I
Row amendment, obtains revised admittance matrix Y ' and node current column vector I '.
Step s204：Using admittance matrix Y ' and node current column vector I ', according to calculating side corresponding with off-the-line type
Formula, calculate and obtain all solutions column voltage on circuit.
It is understood that judge obtain traction substation off-the-line type and change obtain new admittance matrix Y ' and
After node current column vector I ', node admittance network equation is brought into, all solutions column voltage on circuit is calculated.
Traction substation off-the-line fault modeling method disclosed by the invention, it is comprehensive based on the traction substation of all fronts
Influence of all fronts traction substation to solution column voltage is considered, so that DC traction substation off-the-line failure mathematical modeling is more
Meet the truth of urban track traffic DC traction substation off-the-line, obtained result is more accurately and reliably.Utilize the mould
Type, it can realize and judge in the case of the arbitrarily input of traction substation solution column position, type and select corresponding solution column count
Program, there is higher flexibility and general applicability.
Embodiment two
Fig. 4 is refer to, Fig. 4 is that the present invention determines method in a kind of traction substation solution column voltage that a upper embodiment provides
On the basis of, there is provided another traction substation solution column voltage determine method process flow chart, including：
Step s301：Receive position of failure point and off-the-line type corresponding to off-the-line traction substation；
Step s302：The node serial number at default off-the-line traction substation both ends is respectively k, k+1；
It is understood that the numbering of the node at any traction substation both ends is all continuous, traction is set to become herein
The node serial number at electric institute both ends is k, k+1.
Step s303：Judge whether off-the-line type is big two-side feeding after off-the-line, if it is, into step s304, it is no
Then, then into step s305；
Step s304：Shunt admittance value Y corresponding to off-the-line traction substation is made respectivelyk,k+1=0, equivalent current source amplitude Ik
=0, obtain revised admittance matrix Y ' and node current column vector I '；Revised admittance matrix Y ' and node current are arranged
Vectorial I ' brings node admittance network equation into, obtains all solutions column voltage on circuit, into step s311；
Step s305：Judge whether off-the-line type is single side feeding after off-the-line, if it is, into step s306, otherwise, is entered
Enter step s309；
Step s306：Judge whether off-the-line type is single side feeding after head end or end traction substation off-the-line, if it is,
Into step s307；Otherwise, into step 308；
Step s307：Shunt admittance value Y corresponding to off-the-line traction substation is made respectivelyk,k+1=0, equivalent current source amplitude Ik
=0；Obtain revised admittance matrix Y ' and node current column vector I '；Revised admittance matrix Y ' and node current are arranged
Vectorial I ' brings node admittance network equation into, obtains all solutions column voltage on circuit, into step s311；
Step s308：If a upper node serial number adjacent with off-the-line traction substation node is respectively：Upcoming contact net
Node a, up rail node b, descending contact net node c, descending rail node d；Next node is numbered：It is up to connect
Net-fault node e, up rail node f, descending contact net node g, descending rail node h, make off-the-line traction substation pair respectively
The equivalent current source amplitude I answeredk=0, shunt admittance value Yk,k+1=0, and off-the-line traction substation node and its affiliated nodes
The transadmittance of a upper node for group is 0, i.e. Yk,a=0；Yk,c=0；Yk+1,b=0；Yk+1,d=0 or off-the-line traction power transformation
The transadmittance of institute's node and the next node of its affiliated node array is 0；Yk,e=0；Yk,g=0；Yk+1,f=0；Yk+1,h=
0, obtain revised admittance matrix Y ' and node current column vector I '；By revised admittance matrix Y ' and node current arrange to
Amount I ' brings node admittance network equation into, all solutions column voltage on circuit is obtained, into step s311；
Step s309：Judge whether off-the-line type is single power set running two-side feeding, if it is, into step s310；It is no
Then, into step s311；
Step s310：Shunt admittance value Y ' corresponding to off-the-line traction substation is made respectivelyk,k+1=Yk,k+1/ 2, equivalent current
Source amplitude I 'k=Ik/2；Obtain revised admittance matrix Y ' and node current column vector I '；By revised admittance matrix Y '
Node admittance network equation is brought into node current column vector I ', obtains all solutions column voltage on circuit, into step s311；
Step s311：All solutions column voltage is exported, terminates off-the-line voltage and calculates.
The present embodiment is on the basis of embodiment one, during using the model, careful division has been carried out to off-the-line type, no
Modification mode to admittance node matrix equation Y and node current column vector I with the case of is also different, the calculating to solving column voltage
Mode specific steps on the basis of principle identical are also slightly different, and have higher flexibility and general applicability, can be to rail
Traffic DC traction power-supply system in road arbitrarily solves column position and modification mathematical modeling and solution, so as to give city traction substation
Off-the-line the Study on Fault provides a strong instrument.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (6)
- A kind of 1. traction substation off-the-line fault modeling method, it is characterised in that including：Step A1：Preset N number of traction substation, M up locomotive and L a descending locomotive, each traction substation, up machine The both ends of car and descending locomotive respectively set a node, and the position coordinates of the traction substation of circuit head end is former for coordinate Point, the direction that the circuit head end points to end is reference axis positive direction, according to position coordinates from small to large and same position The node at N number of traction substation both ends is numbered the order of up rail after elder generation's upcoming contact net at coordinate, and it is compiled Number scope is 1 to 2N, then the up steel after elder generation's upcoming contact net from small to large and at same position coordinate according to position coordinates The order of rail continues to number to the node at the M up locomotive both ends, and its Serial Number Range is 2N+1 to 2N+2M；Press again According to position coordinates, first the order of descending rail is descending to the L after descending contact net from small to large and at same position coordinate The node at locomotive both ends continues to number, and its Serial Number Range is 2N+2M+1 to 2N+2M+2L；Step B1：Node distribution one on respectively described upcoming contact net, descending contact net, up rail and descending rail Individual array, by the node serial number according to circuit where the node determine corresponding to array, and according to position coordinates by it is small to Big order stores to corresponding array successively；Step C1：Structure track electric power system normal condition fixed topology equivalent circuit corresponding with the node array；Step D1：Calculate in the track electric power system normal condition fixed topology equivalent circuit, deposited in the array respectively Transadmittance between the self-admittance of each node of storage and each node, and result is stored to bus admittance matrix Y；Step E1：According to N number of traction substation equivalent current source amplitude generation node current column vector I；Step F1：Set the node admittance network equation of track electric power system normal condition mathematical modeling：Y*U=I,Wherein, the U is the voltage of each node of DC traction power-supply system, for amount to be asked.
- 2. a kind of traction substation solution column voltage determines method, it is characterised in that this method according to as in claim 1 by leading Draw the track electric power system normal condition mathematical modeling that electric substation's off-the-line fault modeling method obtains, this method includes：Step A2：Receive position of failure point and off-the-line type corresponding to off-the-line traction substation；Step B2：It is determined that according in the track electric power system normal condition mathematical modeling, section corresponding with the position of failure point Point numbering；Step C2：Correct the node admittance of the track electric power system normal condition mathematical modeling respectively according to the off-the-line type Current value corresponding to node serial number described in admittance value corresponding to node serial number described in matrix Y and node current column vector I, Obtain revised admittance matrix Y ' and node current column vector I '；Step D2：Using the revised admittance matrix Y ' and node current column vector I ', according to corresponding with the off-the-line type Calculation, calculate obtain circuit on all solutions column voltage.
- 3. method is determined as claimed in claim 2, it is characterised in that the node serial number point at default off-the-line traction substation both ends Not Wei k, k+1, wherein, described k, k+1 be 1 to 2N in arbitrary integer, when off-the-line type be off-the-line after big two-side feeding when, step Rapid C2With step D2It is specially respectively：Step C2：Shunt admittance value Y corresponding to the off-the-line traction substation is made respectivelyk,k+1=0, equivalent current source amplitude Ik= 0, obtain revised admittance matrix Y ' and node current column vector I '；Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network equation, Obtain all solutions column voltage on circuit.
- 4. method is determined as claimed in claim 2, it is characterised in that the node serial number point at default off-the-line traction substation both ends Not Wei k, k+1, wherein, described k, k+1 be 1 to 2N in arbitrary integer, after off-the-line type is off-the-line single side feeding and headed by Behind end or end traction substation off-the-line during single side feeding, step C2With step D2It is specially respectively：Step C2：Shunt admittance value Y corresponding to the off-the-line traction substation is made respectivelyk,k+1=0, equivalent current source amplitude Ik= 0；Obtain revised admittance matrix Y ' and node current column vector I '；Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network equation, Obtain all solutions column voltage on circuit.
- 5. method is determined as claimed in claim 2, it is characterised in that the node serial number point at default off-the-line traction substation both ends Not Wei k, k+1, wherein, described k, k+1 are the arbitrary integer in 1 to 2N, the single side feeding and be line after off-the-line type is off-the-line In the middle part of road after traction substation off-the-line during single side feeding, step C2With step D2It is specially respectively：Step C2：If a upper node serial number adjacent with the off-the-line traction substation node is respectively：Upcoming contact net node A, up rail node b, descending contact net node c, descending rail node d；Next node is numbered：Upcoming contact net Node e, up rail node f, descending contact net node g, descending rail node h, make the off-the-line traction substation pair respectively The equivalent current source amplitude I answeredk=0, shunt admittance value Yk,k+1=0, and the off-the-line traction substation node and section belonging to it The transadmittance of a upper node for point array is 0, i.e. Yk,a=0；Yk,c=0；Yk+1,b=0；Yk+1,d=0 or the off-the-line The transadmittance of traction substation node and the next node of its affiliated node array is 0；Yk,e=0；Yk,g=0；Yk+1,f= 0；Yk+1,h=0, obtain revised admittance matrix Y ' and node current column vector I '；Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network equation, Obtain all solutions column voltage on circuit.
- 6. method is determined as claimed in claim 2, it is characterised in that the node serial number point at default off-the-line traction substation both ends Not Wei k, k+1, wherein, described k, k+1 be 1 to 2N in arbitrary integer, single power set running is bilateral after off-the-line type is off-the-line During power supply, step C2With step D2It is specially respectively：Step C2：Shunt admittance value Y ' corresponding to the off-the-line traction substation is made respectivelyk,k+1=Yk,k+1/ 2, equivalent current source width Value I 'k=Ik/2；Obtain revised admittance matrix Y ' and node current column vector I '；Step D2：Bring the revised admittance matrix Y ' and node current column vector I ' into the node admittance network side Journey, obtain all solutions column voltage on circuit.
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| CN109948193B (en) * | 2019-02-26 | 2022-06-28 | 中铁第四勘察设计院集团有限公司 | Railway traction substation lightning stroke safety evaluation method of interconnected comprehensive grounding system |
| CN112464603A (en) * | 2020-12-10 | 2021-03-09 | 广州市扬新技术研究有限责任公司 | Calculation method for current distribution of traction station in direct-current traction network |
| CN117609680A (en) * | 2024-01-24 | 2024-02-27 | 天津华凯电气有限公司 | Calculation method for dynamic node admittance matrix of urban rail direct current power supply system |
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