CN106874691A - The load voltage fluctuation frequency computational methods of traction substation in two-wire ferroelectric - Google Patents
The load voltage fluctuation frequency computational methods of traction substation in two-wire ferroelectric Download PDFInfo
- Publication number
- CN106874691A CN106874691A CN201710139917.3A CN201710139917A CN106874691A CN 106874691 A CN106874691 A CN 106874691A CN 201710139917 A CN201710139917 A CN 201710139917A CN 106874691 A CN106874691 A CN 106874691A
- Authority
- CN
- China
- Prior art keywords
- train
- time interval
- trail
- supply arm
- under
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
- G16Z99/00—Subject matter not provided for in other main groups of this subclass
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The load voltage fluctuation frequency computational methods of traction substation, belong to electric railway protection field in two-wire ferroelectric, and the calculation step for solving existing traction substation load voltage fluctuation frequency is complicated, the low problem of efficiency.The step of load voltage fluctuation frequency computational methods of traction substation include calculating the quantity N of train simultaneously up on supply arm in two-wire ferroelectric of the present invention, the calculating up train follow the trail of the voltage pulsation number of times M produced in time interval in N number of train1The step of, calculate down train N number of train follow the trail of time interval in produce voltage pulsation number of times M2The step of and according to F=(M1+M2The step of)/NT calculated load voltage pulsation frequency F.The calculating of the load voltage fluctuation frequency of load voltage fluctuation frequency computational methods traction substation suitable for two-wire ferroelectric of traction substation in two-wire ferroelectric of the present invention.
Description
Technical field
The present invention relates to a kind of load voltage fluctuation frequency computational methods of traction substation, belong to electric railway protection
Field.
Background technology
Traction substation is the special substation of electric propulsion, and traction substation is according to electric locomotive to electric current and voltage
It is required that the electric energy that regional power system conveying comes is converted into the electric energy suitable for electric propulsion, and by downline overhead frame
If contact net power for electric locomotive.
Electric locomotive is single-phase high-power rectification load, and a large amount of harmonic waves and negative sequence component produced in its running can be right
Power network has undesirable effect, so involve in power network other use electric unit.Because electric locomotive downline moves electricity consumption, because
This its harm to power network is much larger than non-moving harmonic source unit.On the other hand, because electric railway railway condition is changeable,
The resistance that electric locomotive runs into during traveling is also continually changing, train needs continually to start, accelerates, coasting, braking, this
Traction load will be caused tempestuously to fluctuate, and produce larger dash current.The fluctuation of traction load can cause traction to become
Voltage pulsation at power station, so have a strong impact on the traction substation with net other with the power quality of electric unit, may
Cause huge economic loss.
Mainly using the electric locomotive of SS7, SS9 and SS4 model, its specified traction power is respectively for current China
3200kW, 4800kW and 6400kW.The harmonious series high-power AC Drive of the models such as HXD1, HXD2 and HXD3 of newest production
Locomotive, its specified traction power is more up to 7200kW~10000kW.The harmonious series cab can control to make power network by PMW
Side current fluctuation approaches sine wave, and electric current and voltage phase basic synchronization, therefore this electricity for handing over orthogonal type electric locomotive
Stream harmonic content is small, and power factor is high.But due to greatly improving for traction power, the harmonious series cab closes a floodgate moment due to interior
The dash current that portion's transformer excitation flow is acted on and produced is bigger, the voltage pulsation shadow caused to network system points of common connection
Sound is also even more serious.
According to national standard《Quality of power supply voltage fluctuation and flicker》The regulation of (GB/T 12326-2008), any one
The variation in voltage that fluctuating load user produces in power system points of common connection, its limit value and variation in voltage frequency, voltage class
It is relevant.Therefore, railway power department needs to be monitored the voltage pulsation that power train causes, to ensure at traction substation
Voltage pulsation meet national standard.However, the calculating of existing traction substation load voltage fluctuation frequency depends on artificial sight
The mode examining the operating condition of associate power equipment and counted to voltage pulsation realizes that step is complicated, less efficient.
The content of the invention
The present invention is complicated in order to solve the calculation step of existing traction substation load voltage fluctuation frequency, and efficiency is low
Problem, it is proposed that in a kind of two-wire ferroelectric traction substation load voltage fluctuation frequency computational methods.
The load voltage fluctuation frequency computational methods of traction substation include in two-wire ferroelectric of the present invention：
Step one, the quantity N for calculating simultaneously up on supply arm train；
Step 2, the voltage pulsation number of times M for calculating up train generation in N number of train tracking time interval1；
Step 3, the voltage pulsation number of times M for calculating down train generation in N number of train tracking time interval2；
Step 4, according to formula (1) calculated load voltage pulsation frequency F：
F=(M1+M2)/NT (1)
Wherein, T is that train follows the trail of time interval.
It is further that the step one includes：
Step A, the time T according to needed for formula (2) the single-row up train of calculating crosses supply arm1：
T1=(S1+S2)/v1 (2)
The supply arm includes the first supply arm and the second supply arm, and the first supply arm and the first supply arm are along the up train
Traffic direction set gradually, S1And S2The respectively length of the first supply arm and the second supply arm, v1It is train running speed；
Step B, the quantity N that simultaneously up on supply arm train is calculated according to formula (3)：
N=fix (T1/T) (3)。
It is further that the step 2 calculates the up train and follows the trail of product in time interval in N number of train according to formula (4)
Raw voltage pulsation number of times M1：
M1=sum (VOn(1：N))+2 (4)
Wherein, VOn(1) for the first row up train follows the trail of the voltage pulsation number of times produced in time interval in N number of train,
VOn(N) for the Nth column up train follows the trail of the voltage pulsation number of times produced in time interval in N number of train；
sum(VOn(1：N))=VOn(1)+VOn(2)+……+VOn(N-1)+VOn(N)；
The X row up train N number of train follow the trail of time interval in run apart from dXN=(N+X-1) v1T, X ∈ [1,
N]；
Work as dXN≤S1When, VOn(X)=2, otherwise, VOn(X)=5.
It is further that the step 3 calculates down train and follows the trail of product in time interval in N number of train according to formula (5)
Raw voltage pulsation number of times M2：
M2=sum (VUnder(1：N))+2 (5)
Wherein, VUnder(1) for first row down train follows the trail of the voltage pulsation number of times produced in time interval in N number of train,
VUnder(N) for Nth column down train follows the trail of the voltage pulsation number of times produced in time interval in N number of train；
sum(VUnder(1：N))=VUnder(1)+VUnder(2)+……+VUnder(N-1)+VUnder(N)；
X row down train N number of train follow the trail of time interval in run apart from DXN=(N+X-1) v1T；
Work as DXN≤S2When, VUnder(X)=2, otherwise, VUnder(X)=5.
Fix functions are bracket function, and sum functions are summing function.
The present invention proposes the load voltage fluctuation frequency of traction substation in above-mentioned two-wire ferroelectric based on electric locomotive end
Computational methods, the calculation step for solving existing traction substation load voltage fluctuation frequency is complicated, the low problem of efficiency.
Brief description of the drawings
Hereinafter by based on embodiment and refer to the attached drawing come to traction substation in two-wire ferroelectric of the present invention
Load voltage fluctuation frequency computational methods are described in more detail, wherein：
Fig. 1 is that the load voltage of traction substation in two-wire ferroelectric described in embodiment one fluctuates the stream of frequency computational methods
Journey block diagram；
Fig. 2 is the schematic diagram that the up train that embodiment three is referred to runs on supply arm, wherein, 1 is traction substation,
2 is the first row up train, and 3 is the secondary series up train, and 4 is the first supply arm, and 5 is non-Electric region, and 6 is the second supply arm.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not according to actual ratio.
Specific embodiment
Below in conjunction with accompanying drawing in two-wire ferroelectric of the present invention traction substation load voltage fluctuate frequency meter
Calculation method is described further.
Embodiment one：The present embodiment is explained with reference to Fig. 1.
The load voltage fluctuation frequency computational methods of traction substation include in two-wire ferroelectric described in the present embodiment：
Step one, the quantity N for calculating simultaneously up on supply arm train；
Step 2, the voltage pulsation number of times M for calculating up train generation in N number of train tracking time interval1；
Step 3, the voltage pulsation number of times M for calculating down train generation in N number of train tracking time interval2；
Step 4, according to formula (1) calculated load voltage pulsation frequency F：
F=(M1+M2)/NT (1)
Wherein, T is that train follows the trail of time interval.
Embodiment two：The present embodiment is the load voltage fluctuation to traction substation in the two-wire ferroelectric described in embodiment one
Frequency computational methods are further limited.
The load voltage fluctuation frequency computational methods of traction substation, the step in two-wire ferroelectric described in the present embodiment
One includes：
Step A, the time T according to needed for formula (2) the single-row up train of calculating crosses supply arm1：
T1=(S1+S2)/v1 (2)
The supply arm includes the first supply arm and the second supply arm, and the first supply arm and the first supply arm are along the up train
Traffic direction set gradually, S1And S2The respectively length of the first supply arm and the second supply arm, v1It is train running speed；
Step B, the quantity N that simultaneously up on supply arm train is calculated according to formula (3)：
N=fix (T1/T) (3)。
Embodiment three：The present embodiment is explained with reference to Fig. 2.
The present embodiment is that the load voltage fluctuation frequency of traction substation in the two-wire ferroelectric described in embodiment two is calculated
Method is further limited.
The load voltage fluctuation frequency computational methods of traction substation, the step in two-wire ferroelectric described in the present embodiment
Two calculate the voltage pulsation number of times M that the up train follows the trail of generation in time interval in N number of train according to formula (4)1：
M1=sum (VOn(1：N))+2 (4)
Wherein, VOn(1) for the first row up train follows the trail of the voltage pulsation number of times produced in time interval in N number of train,
VOn(N) for the Nth column up train follows the trail of the voltage pulsation number of times produced in time interval in N number of train；
sum(VOn(1：N))=VOn(1)+VOn(2)+……+VOn(N-1)+VOn(N)；
The X row up train N number of train follow the trail of time interval in run apart from dXN=(N+X-1) v1T, X ∈ [1,
N]；
Work as dXN≤S1When, VOn(X)=2, otherwise, VOn(X)=5.
The voltage pulsation that electric locomotive causes is mainly is gushed by it into and out of internal transformer splitting or integrating lock excitation during service area
What stream was caused, electric locomotive will produce voltage pulsation twice into service area, and electric locomotive enters non-Electric region will produce once electricity
Pressure fluctuation.
Fig. 2 is the schematic diagram that the up train runs on supply arm.Wherein the first supply arm 4 apart from S1It is 23km, the
Two supply arms 6 apart from S2It is 27km, the distance of non-Electric region 5 is ignored.The first row up train 2 and the secondary series up train
3 speed target value is 250km/h, and it is 5min that train follows the trail of time interval.
Time T needed for the single-row up train crosses supply arm is calculated according to formula (2)1：T1=(S1+S2)/v1=
12min；
The quantity N of simultaneously up on supply arm train is calculated according to formula (3)：N=fix (T1/ T)=2；
The voltage pulsation number of times M1 that the up train follows the trail of generation in time interval in 2 trains is calculated according to formula (4)：M1
=sum (VOn(1：2))+2, VOn(1)=5, VOn(2)=2, M1=9.
Example IV：The present embodiment is the load voltage fluctuation to traction substation in the two-wire ferroelectric described in embodiment three
Frequency computational methods are further limited.
The load voltage fluctuation frequency computational methods of traction substation, the step in two-wire ferroelectric described in the present embodiment
Three calculate the voltage pulsation number of times M that down train follows the trail of generation in time interval in N number of train according to formula (5)2：
M2=sum (VUnder(1：N))+2 (5)
Wherein, VUnder(1) for first row down train follows the trail of the voltage pulsation number of times produced in time interval in N number of train,
VUnder(N) for Nth column down train follows the trail of the voltage pulsation number of times produced in time interval in N number of train；
sum(VUnder(1：N))=VUnder(1)+VUnder(2)+……+VUnder(N-1)+VUnder(N)；
X row down train N number of train follow the trail of time interval in run apart from DXN=(N+X-1) v1T；
Work as DXN≤S2When, VUnder(X)=2, otherwise, VUnder(X)=5.
Although describing the present invention herein with reference to specific implementation method, it should be understood that, these realities
Apply the example that example is only principles and applications.It should therefore be understood that can be permitted exemplary embodiment
Many modifications, and can be designed that other arrangements, the spirit of the invention limited without departing from appended claims and
Scope.It should be understood that can be by way of different from described by original claim come with reference to different appurtenances
It is required that and feature specifically described herein.It will also be appreciated that the feature with reference to described by separate embodiments can be used at it
In his embodiment.
Claims (4)
1. in two-wire ferroelectric traction substation load voltage fluctuation frequency computational methods, it is characterised in that methods described includes：
Step one, the quantity N for calculating simultaneously up on supply arm train；
Step 2, the voltage pulsation number of times M for calculating up train generation in N number of train tracking time interval1；
Step 3, the voltage pulsation number of times M for calculating down train generation in N number of train tracking time interval2；
Step 4, according to formula (1) calculated load voltage pulsation frequency F：
F=(M1+M2)/NT (1)
Wherein, T is that train follows the trail of time interval.
2. in two-wire ferroelectric as claimed in claim 1 traction substation load voltage fluctuation frequency computational methods, its feature
It is that the step one includes：
Step A, the time T according to needed for formula (2) the single-row up train of calculating crosses supply arm1：
T1=(S1+S2)/v1 (2)
The supply arm includes the first supply arm and the second supply arm, the first supply arm and the first supply arm along the up train fortune
Line direction sets gradually, S1And S2The respectively length of the first supply arm and the second supply arm, v1It is train running speed；
Step B, the quantity N that simultaneously up on supply arm train is calculated according to formula (3)：
N=fix (T1/T) (3)。
3. in two-wire ferroelectric as claimed in claim 2 traction substation load voltage fluctuation frequency computational methods, its feature
It is that the step 2 calculates the voltage pulsation time that the up train follows the trail of generation in time interval in N number of train according to formula (4)
Number M1：
M1=sum (VOn(1：N))+2 (4)
Wherein, VOn(1) for the first row up train follows the trail of the voltage pulsation number of times produced in time interval, V in N number of trainOn(N)
For the Nth column up train follows the trail of the voltage pulsation number of times produced in time interval in N number of train；
sum(VOn(1：N))=VOn(1)+VOn(2)+……+VOn(N-1)+VOn(N)；
The X row up train N number of train follow the trail of time interval in run apart from dXN=(N+X-1) v1T, X ∈ [1, N]；
Work as dXN≤S1When, VOn(X)=2, otherwise, VOn(X)=5.
4. in two-wire ferroelectric as claimed in claim 3 traction substation load voltage fluctuation frequency computational methods, its feature
It is that the step 3 calculates the voltage pulsation time that down train follows the trail of generation in time interval in N number of train according to formula (5)
Number M2：
M2=sum (VUnder(1：N))+2 (5)
Wherein, VUnder(1) for first row down train follows the trail of the voltage pulsation number of times produced in time interval, V in N number of trainUnder(N)
For Nth column down train follows the trail of the voltage pulsation number of times produced in time interval in N number of train；
sum(VUnder(1：N))=VUnder(1)+VUnder(2)+……+VUnder(N-1)+VUnder(N)；
X row down train N number of train follow the trail of time interval in run apart from DXN=(N+X-1) v1T；
Work as DXN≤S2When, VUnder(X)=2, otherwise, VUnder(X)=5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710139917.3A CN106874691A (en) | 2017-03-09 | 2017-03-09 | The load voltage fluctuation frequency computational methods of traction substation in two-wire ferroelectric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710139917.3A CN106874691A (en) | 2017-03-09 | 2017-03-09 | The load voltage fluctuation frequency computational methods of traction substation in two-wire ferroelectric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106874691A true CN106874691A (en) | 2017-06-20 |
Family
ID=59169994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710139917.3A Pending CN106874691A (en) | 2017-03-09 | 2017-03-09 | The load voltage fluctuation frequency computational methods of traction substation in two-wire ferroelectric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106874691A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490292A (en) * | 2018-03-21 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of train travel section on-line monitoring method and system |
| CN110245461A (en) * | 2019-07-02 | 2019-09-17 | 北京沃德伟业技术开发有限公司 | A kind of urban track traffic traction load modeling method, system and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699693A (en) * | 2009-11-06 | 2010-04-28 | 江苏科能电力工程咨询有限公司 | Method for calculating voltage fluctuation of power grid caused by rail traction shock load |
-
2017
- 2017-03-09 CN CN201710139917.3A patent/CN106874691A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699693A (en) * | 2009-11-06 | 2010-04-28 | 江苏科能电力工程咨询有限公司 | Method for calculating voltage fluctuation of power grid caused by rail traction shock load |
Non-Patent Citations (5)
| Title |
|---|
| 侯俊杰等: "面向多因素影响的间歇性能源系统无功电压运行风险分析", 《可再生能源》 * |
| 周骏麟: "地铁牵引供电系统可靠性在线分析研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑（月刊）》 * |
| 朱明星等: "关于电能质量国标中电压变动频度定义的探讨", 《电测与仪表》 * |
| 邢小平: "电铁牵引负荷对含风电地区电网的影响研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑（月刊）》 * |
| 陶冶等: "电气化铁路牵引负荷对电网的电压波动影响", 《万方会议论文》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490292A (en) * | 2018-03-21 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of train travel section on-line monitoring method and system |
| CN110245461A (en) * | 2019-07-02 | 2019-09-17 | 北京沃德伟业技术开发有限公司 | A kind of urban track traffic traction load modeling method, system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105551337B (en) | A kind of train operator's auxiliary driving method and system | |
| CN103963805A (en) | Energy-saving method of train operation of urban mass transit | |
| CN106055852B (en) | A kind of operation of subway train and tractive power supply system coupling Simulation modeling method | |
| CN111114596B (en) | Multi-train speed curve collaborative optimization method considering network loss | |
| CN205665328U (en) | Experimental test platform of regenerative brake energy repayment converter | |
| CN106874691A (en) | The load voltage fluctuation frequency computational methods of traction substation in two-wire ferroelectric | |
| Fazel et al. | Energy-efficient emplacement of reversible DC traction power substations in urban rail transport through regenerative energy recovery | |
| CN104346525B (en) | Method for calculating accumulated power of multiple trains of traction substation of electricity supply system of urban rail transit | |
| CN103241138B (en) | Low-frequency traction power supply system | |
| CN107590343A (en) | A kind of track traffic full line analogue system and emulation mode | |
| CN106777817A (en) | The frequency analysis modeling method of urban track traffic quality of power supply simulation analysis system | |
| CN106740998A (en) | Urban track traffic CBTC system onboard ATO energy-conservation control methods | |
| CN104192176A (en) | Method for reducing metro traction energy consumption | |
| CN207251209U (en) | A kind of electric power electric transformer | |
| CN109802401A (en) | A kind of through AT contact net for power supplying harmonic detecting and damping unit | |
| CN102887082B (en) | Flexible traction power supply mode and device thereof for electrified railway | |
| CN104715425B (en) | A kind of track traffic station distribution transformer capacity computational methods | |
| Yang et al. | Adjustment of metro train operation curve for efficiently using regenerative energy | |
| Ren et al. | Train timetable optimization research based on PSO energy-efficient operation strategy | |
| CN105599640A (en) | Apparatus and method for suppressing overhead contact system overvoltage caused by regenerative braking | |
| Murata et al. | Study on a feeding circuit model formulated to use multipurpose solvers for multi-train simulators | |
| Omar et al. | New model of inverting substation for DC traction with regenerative braking system | |
| CN211209304U (en) | Power supply system with coexistence of non-contact power supply and contact power supply of tramcar | |
| Chen et al. | Integrated optimization of train speed profile and timetable considering the location of substations | |
| Li et al. | Research on improved train automatic control strategy based on particle swarm optimization |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |
|
| WD01 | Invention patent application deemed withdrawn after publication |