CN115549103B - Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway - Google Patents

Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway Download PDF

Info

Publication number
CN115549103B
CN115549103B CN202211495967.2A CN202211495967A CN115549103B CN 115549103 B CN115549103 B CN 115549103B CN 202211495967 A CN202211495967 A CN 202211495967A CN 115549103 B CN115549103 B CN 115549103B
Authority
CN
China
Prior art keywords
substation
traction
primary
power supply
particle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202211495967.2A
Other languages
Chinese (zh)
Other versions
CN115549103A (en
Inventor
周启斌
孙明新
伍开洋
张玉平
李曌宇
艾广宁
刘啸辰
李小明
王冠
李建明
马洪亮
王鹏展
李久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Third Engineering Co Ltd of China Railway Electrification Engineering Group Co Ltd
Original Assignee
Third Engineering Co Ltd of China Railway Electrification Engineering Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Third Engineering Co Ltd of China Railway Electrification Engineering Group Co Ltd filed Critical Third Engineering Co Ltd of China Railway Electrification Engineering Group Co Ltd
Priority to CN202211495967.2A priority Critical patent/CN115549103B/en
Publication of CN115549103A publication Critical patent/CN115549103A/en
Application granted granted Critical
Publication of CN115549103B publication Critical patent/CN115549103B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
    • H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/004—Artificial life, i.e. computing arrangements simulating life
    • G06N3/006—Artificial life, i.e. computing arrangements simulating life based on simulated virtual individual or collective life forms, e.g. social simulations or particle swarm optimisation [PSO]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Molecular Biology (AREA)
  • Artificial Intelligence (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Evolutionary Computation (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Mechanical Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention relates to the technical field of high-speed rail power supply, and discloses a multi-source interconnection type cooperative traction power supply system suitable for an annular high-speed railway, which comprises a traction substation, a power supply unit and a power supply unit, wherein the traction substation determines at least two primary substations connected with the traction substation based on a topology optimization algorithm; the traditional mode of constructing 220kv primary substations along the railway line is changed, topological optimization design is carried out by using coordinates, the existing primary substations are fully utilized, the rationality of a connection structure is improved, the new construction cost is reduced, and the anti-fluctuation performance of a power supply system is improved on the premise of not remarkably improving the construction cost; the proportion of the traction substation for getting power to each connected primary substation is determined based on the particle swarm optimization algorithm, the optimal distribution proportion can be obtained based on historical data including voltage fluctuation and other parameters, and the artificial errors which may occur when power getting distribution is carried out according to empirical values are avoided.

Description

Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway
Technical Field
The invention belongs to the technical field of high-speed rail power supply, and particularly relates to a multi-source interconnection type cooperative traction power supply system suitable for an annular high-speed railway.
Background
The urban group is a main mode of the current human society development, the annular track system can be matched with the development of the urban group, is a relatively advanced track traffic design mode, an origin station and a destination station are arranged in the same city, a plurality of important node cities are connected in series along the way, and a high-efficiency regional traffic network can be formed by matching with transverse and longitudinal railway main lines, so that an urban group traffic network is formed, and the urban group traffic network has the advantages of similar upstream line and downstream line efficiencies, higher loop head-to-tail traffic efficiency and the like. The high-speed rail power supply system depends on a civil power grid, generally depends on a 220kv three-phase power grid for transmission, then single-phase alternating current with the transformation voltage of 27.5kv of a traction substation along the high-speed rail is transmitted to a contact network, and a locomotive pantograph is lifted to obtain electricity from the contact network.
In the prior art, an improvement of high-speed rail power supply systems is disclosed, CN106797182B discloses an apparatus for connecting the railway power supply of a railway line to a three-phase power supply network, with which the two trolley wire sections of an autotransformer system are fed with electrical energy relatively simply and efficiently and at the same time asymmetries of the electrical loads of the three-phase power supply network are avoided; CN105932769B discloses a seamless switching device and method for a power supply of an electrified railway traction substation, which solves the problems existing in the main transformer switching operation of the conventional traction substation, does not need to be attended to complete complicated manual switching operation, realizes uninterrupted power supply for a contact network during switching, reduces the interference on railway transportation, provides convenience for equipment maintenance of the traction substation, and improves the working efficiency; CN109484254B discloses a topological structure which can make a train pass through phase splitting without power interruption according to the actual situation of two-side traction networks in a two-way flow taking mode.
However, the construction of a matched power supply network is required in the current high-speed rail construction, a plurality of 220kv substations along a railway line are required to be constructed as primary substations, and power is supplied to a 27.5kv traction distribution station along the line, and the power supply method has the following technical problems:
(1) In the development process of urban groups, medium and large cities are usually distributed around the annular railway, and primary substations are not lacked, but the existing power supply scheme needs to newly build the primary substations along the railway, so that the construction cost is high, and the existing primary substations cannot be fully utilized.
(2) The existing power supply scheme is that a primary substation is connected in series with a plurality of traction substations along a high-speed rail, once the primary substation fails or is overloaded, the power supply of the high-speed rail is directly influenced, or the urban power utilization nearby is reversely influenced due to the high priority of the high-speed rail, at the moment, the primary substations with abundant loads possibly exist nearby along the high-speed rail, so that the primary substations cannot be used in time, and the fluctuation tolerance of a power supply system is weak.
(3) The existing multi-source power supply system is usually set according to experience values for power taking ratios of a plurality of power supplies, cannot efficiently and intelligently adjust the ratios among the multiple sources, and particularly depends on communication cooperation among technical personnel.
Disclosure of Invention
The multi-source interconnection type collaborative traction power supply system suitable for the annular high-speed railway is characterized by comprising a first-level transformer substation and a traction transformer substation, wherein the traction transformer substation is connected with at least two first-level transformer substations, and the traction transformer substation determines the at least two first-level transformer substations connected with the traction transformer substation based on a topological optimization algorithm;
the primary substation establishment sequence{S i (A i ,B i ,C i ) And (5) establishing a sequence (Q) by the traction substation j (a j ,b j ,c j ) And a topological path from the primary substation to the traction substation comprises a node sequence (P) k (d k ,e k ,f k ) }, the topology optimization algorithm satisfies the following formula:
formula (1):
Figure SMS_1
formula (2):
Figure SMS_2
formula (3):
Figure SMS_3
wherein S is i I-th primary substation, Q, representing the origin station j The jth traction substation, P, representing the origin station k Representing the kth node on a topological path from the primary substation to the traction substation, (A) i ,B i ,C i )、(a j ,b j ,c j ) And (d) k ,e k ,f k ) Respectively are coordinate parameters;
Figure SMS_4
representing a topological path between an arbitrary ith primary substation and a jth traction substation; />
Figure SMS_5
Representing a length minimum in the topological path; />
Figure SMS_6
Representing the increasing sequence of the shortest paths from all the first-level substations to the jth traction substation, wherein m and l respectively represent the total number of the first-level substations and the nodes;
and based on the topology optimization algorithm, selecting two or more primary substations with the shortest path to any traction substation as power supply sources of the traction substation, and carrying out double-source power supply or multi-source power supply on the traction substation.
Further, the primary substation is a 220kv substation, and the traction substation is a 27.5kv substation.
Furthermore, the traction substation obtains electricity from a plurality of primary substations connected with the traction substation in proportion, and the electricity obtaining proportion
Figure SMS_7
And->
Figure SMS_8
。
Further, the electricity taking proportion
Figure SMS_9
And determining according to a particle swarm optimization algorithm.
Further, the particle swarm optimization algorithm comprises the following steps:
constructing an initial mathematical model of the electricity taking proportion and determining constraint conditions
Figure SMS_10
Determining the initial position, speed and fitness of each particle in the particle swarm; updating the speed and the position of each particle, comparing the fitness of each particle in the particle swarm, and finding out the particle position with a local optimal value and the particle position with a global optimal value; the calculation formula for updating the speed and the position of each particle is as follows:
formula (4):
Figure SMS_11
formula (5):
Figure SMS_12
in the formula, t represents an iterative algebra;
Figure SMS_13
denotes the particle QUOTE->
Figure SMS_14
/>
Figure SMS_15
Historical best location of the pass;
Figure SMS_16
the best position searched by the current particle swarm is also called as a global best position;
c1 and C2 are learning factors, and are generally valued between 0~2;
Figure SMS_17
and/or>
Figure SMS_18
Is in [0,1]Two independent random numbers above; />
Figure SMS_19
Is the initial velocity of the particle;
Figure SMS_20
the optimal velocity for the particle;
Figure SMS_21
is the initial distance of the particle;
Figure SMS_22
is the optimal distance of the particles;
Figure SMS_23
) For the velocity correction factor, the current particle is representedCorrecting the speed in each dimension, wherein the speed correction vector is manually assigned or a speed average value coefficient of each particle in each dimension;
Figure SMS_24
represents a vector dot product;
termination conditions were as follows: the specified iteration number or the optimal position is reached to meet the minimum adaptive threshold.
Advantageous effects
Compared with the prior art, the invention provides a multi-source interconnection type collaborative traction power supply system suitable for an annular high-speed railway, which has the following beneficial effects:
1. the invention changes the traditional mode of constructing 220kv primary substations along the railway, marks a high-speed rail route map, the position of the existing primary substation and the planned position of the traction substation on the map, determines the topological relation of the high-speed rail route map and the position of the planned traction substation, performs topological optimization design by using coordinates, fully utilizes the existing primary substation, and performs new construction only at necessary positions, thereby determining which primary substations should be connected for any traction substation, improving the rationality of the connection structure and reducing the new construction cost.
2. The invention changes the single power supply mode of the traditional traction substation, at least two primary substations are connected to supply power to any traction substation, when any primary substation has special conditions of failure or overload, such as substation maintenance, high-temperature overload and the like, the other primary substations can get power, and the fluctuation resistance of the power supply system is improved on the premise of not remarkably improving the construction cost.
3. According to the traditional power supply mode of serially connecting along a high-speed rail, a high-voltage power grid needs to be arranged along the high-speed rail, the high-voltage power grid is of a linear structure, and the construction cost is high.
4. According to the method, the proportion of the traction substation for getting power to each connected primary substation is determined based on the particle swarm optimization algorithm, the optimal distribution proportion can be obtained based on historical data including voltage fluctuation and other parameters, and the possible manual error during power getting distribution according to the empirical value is avoided.
Drawings
Fig. 1 is a schematic diagram of a substation location of the annular high-speed rail power supply system of the invention;
FIG. 2 is a schematic diagram of a substation connection mode of a power supply system in the prior art;
fig. 3 is a schematic diagram of a topological relationship between a primary substation and a traction substation of the annular high-speed rail power supply system of the invention;
FIG. 4 is a schematic diagram of the connection relationship between the topology-optimized primary substation and the traction substation according to the present invention;
fig. 5 is a schematic diagram of the actual paths of the primary substation and the traction substation according to the present invention;
fig. 6 is a schematic diagram of a topological path between a primary substation and a traction substation according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-5, a multi-source interconnected cooperative traction power supply system of an annular high-speed railway is provided with a primary substation and a traction substation;
marking out the positions of a high-speed railway line, an existing primary substation, a planned primary substation and a traction substation by using an electronic map, and marking coordinates, wherein the primary substation establishes a sequence (S) i (A i ,B i ,C i ) And the traction substation establishes a sequence (Q) j (a j ,b j ,c j )}，(A i ,B i ,C i )、(a j ,b j ,c j ) Coordinate parameters of a primary substation and a traction substation are respectively set;
the topological path from the primary substation to the traction substation comprises a node sequence { P } k (d k ,e k ,f k ) There may be multiple connection paths for any primary substation and traction substation, and it is assumed that there are two possible connection paths between the primary substation S3 and the traction substation Q5 (see fig. 5-6), where the first path is S3 → P1 → P2 → P3 → Q5, the second path is S3 → P4 → P5 → P6 → P7 → P8 → Q5, and each path is a free curve on the actual map, at this time, the lengths of the paths need to be compared to determine the optimal path, and the conventional method is to calculate on an electronic map by using a segmentation method, but the calculation amount of the method is large, and since the initial planning does not require an accurate length, it is not applicable that the segmentation method calculates the actual length, the present invention uses a topological map, marks detour obstacles and traversable obstacles, such as mountains and lakes, and directly simplifies the paths into broken lines, thereby obtaining the expression:
Figure SMS_25
（1）
and calculating the length of each path, and selecting the shortest path to obtain an expression:
Figure SMS_26
（2）
for example, for the primary substation S3 and the traction substation Q5, two possible connection paths exist between the two, and assuming the shortest connection path, the equation (2) determines the path S3 → P1 → P2 → P3 → Q5 through calculation, and the distance of the path is the minimum value min;
further, for any traction substation, connection can be established with all the primary substations, taking the traction substation Q5 as an example, the power supply relationship may be S1Q5, S2Q5, … …, snQ (assuming that there are n primary substations), then, for each combination mode, after the shortest path is determined through the topological map, all the combination modes need to be sorted, and at this time, sorting from small to large can be completed based on formula (3):
Figure SMS_27
（3）
assuming that five primary substations can be connected to the traction substation Q5, and the sequence { S3Q, S4Q5, S2Q5, S1Q5, S5Q5} is obtained after the sorting by formula (3), the primary substations S3 and S4 should be considered as the primary substations for supplying power to the traction substation Q5.
The above-mentioned formula is used for making,
Figure SMS_28
representing topological paths of any one-level transformer substation and any one traction transformer substation; />
Figure SMS_29
Representing a minimum value of length in the topological path; />
Figure SMS_30
Representing the increasing ordering of the shortest paths from all primary substations to the jth traction substation, with m and l representing the total number of primary substations and nodes, respectively.
After the primary substation for power supply is determined, the power supply proportion needs to be further determined, and the power taking proportion is set
Figure SMS_31
And &>
Figure SMS_32
(ii) a Taking the traction substation Q5 as an example, assuming that the primary substations S3, S4 and S2 for supplying power to the traction substation Q5 are determined, the power taking ratio of the traction substation Q5 to the three primary substations is->
Figure SMS_33
It is necessary to further ascertain->
Figure SMS_34
The value of (d); for multi-source power systems, the conventional approach is to take values based on experience and to perform manual conditions, such as selecting ≥ er>
Figure SMS_35
When the primary substation S3 is under-loaded, manual coordination of the distribution is required, for example adjustment to £ er>
Figure SMS_36
The response of this method is relatively late and also relatively subjective.
Due to the electricity taking proportion
Figure SMS_37
Is essentially a condition at a given boundary
Figure SMS_38
The invention creatively adopts a particle swarm optimization algorithm to carry out numerical optimization, particularly takes the voltage fluctuation of a traction substation and a primary substation as a parameter, selects a combination mode which minimizes the overall voltage fluctuation, for example, sets an initial parameter (or more) in the particle swarm optimization algorithm>
Figure SMS_39
，
Figure SMS_40
Figure SMS_41
Determining a boundary condition as an initial state of a particle>
Figure SMS_42
Updating the speed and the position of each particle by taking the minimum voltage fluctuation of the primary substation and the traction substation as a termination condition, comparing the fitness of each particle in the particle swarm, and finding out the particle position of a local optimal value and the particle position of a global optimal value; the calculation formula for updating the speed and the position of each particle is as follows:
formula (4):
Figure SMS_43
formula (5):
Figure SMS_44
in the formula, t represents an iterative algebra;
Figure SMS_45
means for a particle->
Figure SMS_46
Historical best location of the pass;
Figure SMS_47
the best position searched by the current particle swarm is also called as the global best position;
c1 and C2 are learning factors, and are generally valued between 0~2;
Figure SMS_48
and/or>
Figure SMS_49
Is in [0,1]Two mutually independent random numbers above;
Figure SMS_50
is the initial velocity of the particle;
Figure SMS_51
the optimal speed for the particles;
Figure SMS_52
is the initial distance of the particle;
Figure SMS_53
is the optimal distance of the particles;
Figure SMS_54
) The velocity correction vector is a velocity correction coefficient and represents the velocity correction of the current particle in each dimension, and the velocity correction vector is an artificial assignment or a velocity average value coefficient of each particle in each dimension;
Figure SMS_55
represents a vector dot product;
termination conditions were as follows: the specified iteration number or the optimal position is reached to meet the minimum adaptive threshold.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A multi-source interconnection type collaborative traction power supply system suitable for an annular high-speed railway is characterized by comprising a primary substation and a traction substation, wherein the traction substation is connected with at least two primary substations, and the traction substation determines the at least two primary substations connected with the traction substation based on a topological optimization algorithm;
the primary substation establishes a sequence { S i (A i ,B i ,C i ) And the traction substation establishes a sequence (Q) j (a j ,b j ,c j ) The topological path from the primary substation to the traction substation comprises a node sequence (P) k (d k ,e k ,f k ) And the topology optimization algorithm satisfies the following formula:
formula (1):
Figure QLYQS_1
formula (2):
Figure QLYQS_2
formula (3):
Figure QLYQS_3
wherein S is i I-th primary substation, Q, representing the origin station j The jth traction substation, P, representing the origin station k Representing the kth node on a topological path from the primary substation to the traction substation, (A) i ,B i ,C i )、(a j ,b j ,c j ) And (d) k ,e k ,f k ) Respectively are coordinate parameters;
Figure QLYQS_4
representing a topological path between an arbitrary ith primary substation and a jth traction substation; />
Figure QLYQS_5
Representing a length minimum in the topological path; />
Figure QLYQS_6
Representing an increasing ordering of the shortest paths of all primary substations to the jth traction substation,mandlrespectively representing the total number of the primary substation and the total number of the nodes;
and based on the topology optimization algorithm, selecting two or more primary substations with the shortest path to any traction substation as power supply sources of the traction substation, and carrying out double-source power supply or multi-source power supply on the traction substation.
2. The multi-source interconnection type cooperative traction power supply system suitable for the annular high-speed railway is characterized in that: the primary transformer substation is a 220kv transformer substation, and the traction transformer substation is a 27.5kv transformer substation.
3. The multi-source interconnection type cooperative traction power supply system suitable for the annular high-speed railway is characterized in that: the traction substation is proportionally powered to a plurality of primary substations connected with the traction substation, and the power-taking proportion
Figure QLYQS_7
And->
Figure QLYQS_8
。
4. The multi-source interconnection type cooperative traction power supply system suitable for the annular high-speed railway is characterized in that: the electricity taking proportion
Figure QLYQS_9
And determining according to a particle swarm optimization algorithm.
5. The multi-source interconnection type cooperative traction power supply system suitable for the annular high-speed railway is characterized in that: the particle swarm optimization algorithm comprises the following steps:
constructing an initial mathematical model of the electricity taking proportion and determining constraint conditions
Figure QLYQS_10
Determining the initial position, speed and fitness of each particle in the particle swarm; updating the speed and the position of each particle, comparing the fitness of each particle in the particle swarm, and finding out the particle position with a local optimal value and the particle position with a global optimal value; the calculation formula for updating the speed and the position of each particle is as follows:
formula (4):
Figure QLYQS_11
formula (5): />
Figure QLYQS_12
In the formula (I), the compound is shown in the specification,
Figure QLYQS_13
representing an iterative algebra;
Figure QLYQS_14
means for a particle->
Figure QLYQS_15
Historical best location of the pass;
Figure QLYQS_16
the best position searched by the current particle swarm is also called as the global best position;
Figure QLYQS_17
and/or>
Figure QLYQS_18
Taking a value between 0~2 as a learning factor;
Figure QLYQS_19
and/or>
Figure QLYQS_20
Is in [0,1]Two mutually independent random numbers above;
Figure QLYQS_21
is the initial velocity of the particle;
Figure QLYQS_22
the optimal speed for the particles;
Figure QLYQS_23
is the initial distance of the particle;
Figure QLYQS_24
is the optimal distance of the particles;
Figure QLYQS_25
) Representing the speed correction of the current particles in each dimension for a speed correction coefficient, wherein the speed correction vector is manually assigned or a speed average value coefficient of each particle in each dimension;
Figure QLYQS_26
represents a vector dot product;
and (4) termination conditions: the specified iteration number or the optimal position is reached to meet the minimum adaptive threshold.
CN202211495967.2A 2022-11-28 2022-11-28 Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway Active CN115549103B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211495967.2A CN115549103B (en) 2022-11-28 2022-11-28 Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211495967.2A CN115549103B (en) 2022-11-28 2022-11-28 Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway

Publications (2)

Publication Number Publication Date
CN115549103A CN115549103A (en) 2022-12-30
CN115549103B true CN115549103B (en) 2023-04-07

Family

ID=84722147

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211495967.2A Active CN115549103B (en) 2022-11-28 2022-11-28 Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway

Country Status (1)

Country Link
CN (1) CN115549103B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102495934B (en) * 2011-12-15 2014-12-24 南京理工大学 Design method for railway transport drawing power balanced run chart based on particle swarm algorithm
DE102016214051A1 (en) * 2016-07-29 2018-02-01 Siemens Aktiengesellschaft Method for power supply and power supply for arranged on a railway track operating elements
CN109784530B (en) * 2018-12-10 2021-02-19 北京交通大学 Power supply partition optimization setting method based on medium-speed magnetic suspension line passing capacity
CN112677831B (en) * 2019-10-17 2023-03-24 中铁二院工程集团有限责任公司 Gridding power supply method applied to multi-line electrified railway
CN112977181A (en) * 2021-03-18 2021-06-18 清华大学 Flexible alternating-current traction power supply system for realizing through same phase and operation method thereof
CN113868736A (en) * 2021-09-14 2021-12-31 中铁三局集团有限公司 Automatic cable laying method for substation

Also Published As

Publication number Publication date
CN115549103A (en) 2022-12-30

Similar Documents

Publication Publication Date Title
CN107134787B (en) Cutting load control system and cutting load method based on distributed feeder automation
CN112751350B (en) Method for formulating mobile energy storage space-time combined optimization scheduling strategy
CN108039726B (en) Energy local area network distributed cooperative control method based on multi-agent system
CN108134393A (en) A kind of Regional Energy interconnection distribution network system based on electric energy route technology
CN108988402B (en) Optimization control method for alternating current-direct current power distribution network based on optimization scheduling
CN107301482A (en) A kind of power distribution network medium-voltage line paths planning method based on city integrated piping lane
CN105303021B (en) The adaptive real-time dynamic Mathematical Modeling Methods of urban track traffic DC traction power-supply system
CN104200263A (en) Power distribution network route planning method based on tabu differential evolution and GIS (Geographic Information System)
CN102611107A (en) Urban medium-voltage power distribution network closed-loop power supply system based on annular net rack
CN103746388A (en) Electric distribution network reactive-voltage three-level coordination control method
CN104915724A (en) AC-DC parallel power transmission channel power optimization distribution method and system
CN111191181B (en) Operation energy consumption calculation method for optimizing energy-saving speed of multiple trains in rail transit
WO2014107842A1 (en) Multi-terminal direct-current transmission system for wind power generation through large-scale remote grid connection
CN103279661B (en) Substation capacity Optimal Configuration Method based on Hybrid quantum inspired evolution algorithm
CN108667027A (en) Ac and dc systems power flow transfer search containing flexible direct current and quantitative analysis method
CN109449934A (en) A kind of power transmission network obstruction management-control method based on the reconstruct of high voltage distribution network subregion
CN115549103B (en) Multisource interconnection type collaborative traction power supply system suitable for annular high-speed railway
CN104809340A (en) Method for quickly calculating operating point of multi-end flexible direct-current power transmission system
CN109002938B (en) Double-layer planning method for alternating current-direct current hybrid power distribution network considering N-1 safety criterion
CN110768285A (en) Method for obtaining strength of alternating current-direct current hybrid direct current multi-feed-in receiving-end power grid
CN111105089A (en) Urban power grid planning method considering coordination of main network and distribution network
CN115495989A (en) Offshore wind farm current collection system topological structure design method considering wind characteristics
CN115130721A (en) Electric automobile load aggregation regulation and control optimization method under coupling of energy and traffic network
CN110797866B (en) Dynamic path planning method for electric automobile participating in power grid frequency modulation/voltage regulation
CN117371154B (en) Power grid planning system of industrial frequency division interconnection system with M3C frequency conversion station for site selection and volume fixation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant