CN109936135A - A kind of electric railway is constructed with phase energy storage for power supply and its control method - Google Patents
A kind of electric railway is constructed with phase energy storage for power supply and its control method Download PDFInfo
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Abstract
The invention discloses a kind of electric railways with phase energy storage for power supply construction and its control method.This includes that three-phase electric traction transformer, three-phase matching transformer, multiple energy storage compensation devices and cooperative control device, three-phase electric traction transformer primary side are connect with three-phase electrical power system with phase energy storage for power supply construction, and secondly side end is connect with traction load；The connection of the secondary side of three-phase matching transformer primary side and three-phase electric traction transformer；The exchange end of multiple energy storage compensation devices is connect with three-phase matching transformer secondary side respectively；The input terminal of cooperative control device is respectively connected to load feeder Current Transformer Secondary side and load bus-bar potential transformer secondary side, and two-way signaling port is connect with multiple energy storage compensation device two-way signaling ports respectively.Also disclose control method.Therefore, the present invention, which has, implements not only to optimize the operation of Traction Substation of Electric Railway economical and energy saving with mutually and energy-storage function, reach traction load and disappear peak, reduce operating cost, efficiently use train regenerating braking energy.
Description
Technical field
The present invention relates to electrified railway power supply technical fields.
Background technique
Train can generate very big regenerating braking energy in braking process, and cophase supply technology eliminates traction substation
The electric split-phase at place, extends power supply arm lengths, is conducive to the utilization of regenerating braking energy.However, when regeneration total in supply arm
When braking energy is greater than haulage capacity, regenerating braking energy cannot be fully used or rate of traffic flow is low, in same supply arm
When the train of traction and regenerative braking operating condition can not occur simultaneously, regenerating braking energy can not also be utilized.
Acutely, the instantaneous maximum value of power reaches 5-10 times of average value, traction voltage transformation for electrization railway draught load fluctuation
The generally existing load factor of device is low, causes tractive power supply system equipment efficiency of usage low, and operating cost is high.Peak load shifting is as electric power
The important management measure of load can mitigate traction load fluctuation, alleviate peak power to system and equipment bring pressure.Storage
Energy device has the function of energy transfer, i.e., discharges in load peak, charge in load valley.It is filled out using energy storage device peak clipping
The characteristics of paddy, is conducive to improve transformer equipment utilization rate, saves equipment dilatation, update cost, reduces traction power supply cost.Together
When, the traction load power peak period, voltage unbalance factor (negative-sequence current) performance is maximum, is balanced by energy storage device " peak clipping "
Load improves negative phase-sequence effect, it can be achieved that reduction voltage unbalance factor (negative-sequence current).
The modern energy industry system of building " cleaning low-carbon, safe and efficient " is advocated, encourages to push production of energy and utilization
Mode is changed, and provides policy support for current electric railway energy storage technology application.
A kind of electricity is proposed based on factors above to advanced optimize the operation of Traction Substation of Electric Railway economical and energy saving
The railway that gasifies is constructed with phase energy storage for power supply and control method.This seminar has applied for that patent is " a kind of electrical on July 5th, 2017
Change railway energy storage cophase supply device and its control method " (application publication number: CN107104444A), disclose a kind of electrification
Railway energy storage cophase supply device, uses single-phase back-to-back converter and accumulator constructs, and discloses its peak load shifting reality
When control strategy and negative phase-sequence control strategy.The present invention is based on three phase AC-DC converter, DC/DC converter and accumulators, structurally
There are essential distinctions, and use classified packets structure, convenient for extension on demand.In control method, the present invention proposes to press functional areas
Between classification carry out charge and discharge control and power quality compensation control, be conducive to improve regenerating braking energy utilization rate and energy storage device
Capacity utilization.
Summary of the invention
The object of the present invention is to provide a kind of electric railways with phase energy storage for power supply construction and its control method, it can be effective
Ground solves traction load and disappears peak and train regenerating braking energy the technical issues of utilizing.
In order to realize the technical problems to be solved by the invention, the invention adopts the following technical scheme:
A kind of same phase energy storage for power supply construction of electric railway, the same phase energy storage for power supply construction include:
Three-phase electric traction transformer TT, for by the line voltage pick-up of three-phase electrical power system to traction bus, the three-phase to be led
Draw transformer TT primary side to connect with three-phase electrical power system, any two ends of secondary side is connect with traction load TL；
Three-phase matching transformer MT, for the voltage matches and electrical isolation of energy storage compensation device, described three match change
Depressor MT primary side is connect with the secondary side of the three-phase electric traction transformer TT；
Energy storage compensation device, is used for real-time charge and discharge and/or power quality compensation, and the energy storage compensation device is first group
Energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device ECnAnd n is positive integer, institute
State first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device ECnExchange
End is connect with the three-phase matching transformer MT secondary side respectively；
Cooperative control device CC, for detecting traction load operating condition and traction load size and coordinating energy storage compensation dress
Real-time charge and discharge control or/and utility power quality control are set, the input terminal of the cooperative control device CC is respectively connected to load feeder
Current Transformer Secondary side In1With load bus-bar potential transformer secondary side In2, two-way signaling port is respectively with described first
Energy storage compensation device EC1, the second energy storage compensation device EC2... and the n-th energy storage compensation device ECnTwo-way signaling port connect
It connects.
First group of energy storage compensation device EC1Including the first three phase AC-DC converter AD being sequentially connected in series1, first switch
Power supply DD1With first energy-storage units ES1, second group of energy storage compensation device EC2The two or three intersection-including being sequentially connected in series is straight
Current transformer AD2, second switch power supply DD2With second energy-storage units ES2, the n-th group energy storage compensation device ECnIncluding successively going here and there
N-th three phase AC-DC converter AD of connectionn, the n-th Switching Power Supply DDnWith the n-th energy-storage units ESn。
The energy storage compensation device is divided into m group power-type energy storage compensation device and n-m group energy type energy storage compensation device, and
m<n；Wherein, the first energy-storage units ES described in the m group power-type energy storage compensation device1, the second energy-storage units
ES2... and the m energy-storage units ESmFor power-type, m group power-type energy storage compensation device is constituted；The m+1 energy storage list
First ESm+1, the m+2 energy-storage units ESm+2 ... and the n-th energy-storage units ESnFor energy type, n-m group energy is constituted
Type energy storage compensation device.
The three-phase electric traction transformer TT is equipped with spare three-phase electric traction transformer TB, the spare three-phase electric traction transformer TB
Primary side is connect with three-phase electrical power system, and any two ends of secondary side is connect with traction load；The spare three-phase traction transformation
Device TB secondary side is also connect with the primary side of the three-phase matching transformer MT.In order to realize the technical problems to be solved by the invention,
The present invention uses following technical scheme again:
A kind of control method of the same phase energy storage for power supply construction of the electric railway as described in above-mentioned technical proposal, wherein should
The specific steps of control method include:
Step 1: being led using load feeder Current Transformer Secondary side and load bus-bar potential transformer secondary side to detect
Draw load operation operating condition and traction load size；
Step 2: coordinating first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and
The n-th group energy storage compensation device ECnReal-time perfoming charge and discharge control or utility power quality control.Preferably, about in step 2
The specific method of the charge and discharge control includes the following:
Using cooperative control device CC statistical history day traction load data, and traction is calculated with fixed cycle and slippage and is born
Power average value of the lotus in the entire time cycle obtains history day power demand curve, the maximum demand contract in period seclected time
About it is worth, is judged to divide regenerating braking energy benefit according to maximum demand contract value, power demand curve and entire time cycle
With control interval and the peak control interval that disappears；When the power demand value of traction load is less than maximum demand contract value, i.e., power needs
It is regenerating braking energy using control interval that amount curve, which is located at maximum demand contract and is worth section below, and the section is preferentially to control
Based on m group power-type energy storage compensation device work processed；When detection traction load runs on traction working condition, control first group of storage
It can compensation device EC1, second group of energy storage compensation device EC2... and the m group energy storage compensation device ECmElectric discharge；When
Detection traction load runs on regenerative braking operating condition, controls first group of energy storage compensation device EC1, second group of energy storage mend
Repay device EC2... and the m group energy storage compensation device ECmCharging；When the power demand value of traction load is greater than maximum need
When measuring contract value, i.e., it is disappear peak control interval, and the section that power demand curve, which is located at the section of maximum demand contract value or more,
Based on the work of priority acccess control n-m group energy type energy storage compensation device, the m+1 group energy storage compensation device, the m are controlled
+ 2 group energy storage compensation devices ... and the n-th group energy storage compensation device is discharged by peak clipping a reference value, realizes traction load
Peak clipping.
It is further preferred that the specific method of the control of the power quality compensation described in step 2 includes the following:
Under the premise of charge and discharge control, the voltage unbalance factor index of traction load is calculated；When voltage unbalance factor index
When having reached pre-set limit requirement, then first group of energy storage compensation device EC is controlled1, second group of energy storage compensation device
EC2... and the n-th group energy storage compensation device ECnSame-phase compensation electric current be 0；When voltage unbalance factor index is not up to pre-
When value of limiting requires, then first group of energy storage compensation device EC is controlled1, second group of energy storage compensation device EC2... and
The n-th group energy storage compensation device ECnSame-phase compensation electric current is generated respectively is superimposed on charge and discharge control electric current.Make Voltage unbalance
Degree index be up to state standards " GB/T 15543-2008 power quality imbalance of three-phase voltage " limit value requirement.
It is further preferred that the electric current and the n-m group energy of each corresponding phase of m group power-type energy storage compensation device
The electric current of each corresponding phase of type energy storage compensation device is equal.
Specifically, the secondary side electric current for remembering three-phase matching transformer MT is respectively iM1、iM2And iM3, when first group of energy storage
Compensation device EC1, second group of energy storage compensation device EC2... and the n-th group energy storage compensation device ECnFor charge and discharge electric work
When energy, the biphase current i of the secondary side of corresponding three-phase matching transformer MT where control traction loadM1、iM2Carry out energy friendship
It changes, and another phase current iM3It is 0；
As first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group
Energy storage compensation device ECnWhen for power quality compensation, the three-phase current i of the secondary side of three-phase matching transformer is controlledM1、iM2And iM3
It compensates, and electric current iM1、iM2And iM3The sum of be 0；
As first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group
Energy storage compensation device ECnExisting charging/discharging function has power quality compensation again when, i is controlledM1、iM2And iM3For charge and discharge control electricity
The superposition of stream and same-phase compensation electric current.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention uses three phase AC-DC converter AD1Cophase supply and energy-storage function are multiplexed, Converter Capacity is saved
And system investments.
2, the present invention is designed using low capacity cell module, improves the reliability and scalability of system, and the side of maintenance
Just.
3, power-type energy storage device cycle charge-discharge of the present invention often, is used for reclaiming braking energy, energy type storage
Energy device energy is big, is used for load peak clipping.It is mentioned using power-type and energy type energy storage device classification setting convenient for working according to his ability
The utilization rate of high each functional component and service life.
4, control method of the present invention is simple, implements to reach traction load with mutually and energy-storage function and disappear peak, reduce power supply system
To place capacity requirement, place capacity and operating cost is reduced, and efficiently use train regenerating braking energy, advanced optimize electricity
The rail traction substation economical and energy saving that gasifies is run.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the same phase energy storage for power supply construction of electric railway described in the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of the same phase energy storage for power supply construction of electric railway described in the embodiment of the present invention two.
Fig. 3 is the control method flow chart of the same phase energy storage for power supply of electric railway described in the embodiment of the present invention three.
Fig. 4 is the specific flow chart of charge and discharge control described in the embodiment of the present invention three.
Fig. 5 is the power demand curve graph of Fig. 4.
Fig. 6 is the specific flow chart of the control of power quality compensation described in the embodiment of the present invention three.
Specific embodiment
The working principle of the invention is: three phase AC-DC converter AD1With current source characteristic, three intersections-straight unsteady flow is utilized
Device AD1Charge and discharge control electric current is superimposed with power compensation electric current, realizes electric railway with phase energy storage for power supply.It is negative according to traction
Lotus historical data divides regenerating braking energy using section and the peak section that disappears, power-type in conjunction with energy storage device characteristic according to the time period
The priority task of energy storage compensation device utilizes section in regenerating braking energy, carries out regenerating braking energy utilization, energy saving；Energy
Type energy storage compensation device priority task carries out peak clipping in peak clipping section, reduces traction power supply cost.With reference to the accompanying drawing and specifically
The invention will be further described for embodiment.
Embodiment one
As shown in Figure 1, the embodiment of the invention provides a kind of same phase energy storage for power supply of electric railway constructions, wherein institute
Stating same phase energy storage for power supply construction includes for the three-phase traction transformation by the line voltage pick-up of three-phase electrical power system to traction bus
Device TT, for the three-phase matching transformer MT of energy storage compensation device voltage matches and electrical isolation, for real-time charge and discharge and/or
Multiple energy storage compensation devices of power quality compensation and for detecting traction load operating condition and traction load size and coordination
The cooperative control device CC of the real-time charge and discharge control of energy storage compensation device or/and utility power quality control.
The three-phase electric traction transformer TT primary side is connect with three-phase electrical power system, secondly side end sub- a, b and traction load TL
Connection；The three-phase matching transformer MT primary side is connect with the secondary side of the three-phase electric traction transformer TT；The multiple energy storage is mended
Repaying device is first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device ECn
And n is positive integer, first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage is mended
Repay device ECnExchange end connect respectively with the three-phase matching transformer MT secondary side；The input of the cooperative control device CC
End is respectively connected to load feeder Current Transformer Secondary side In1With load bus-bar potential transformer secondary side In2, two-way signaling
Port respectively with the first energy storage compensation device EC1, the second energy storage compensation device EC2... and the n-th energy storage compensation device ECn
Two-way signaling port connection.In addition to this, when traction load is connected to secondary side terminal a, c or b of three-phase electric traction transformer TT, c,
The powered construction is applicable in.
First group of energy storage compensation device EC1Including the first three phase AC-DC converter AD being sequentially connected in series1, first switch
Power supply DD1With first energy-storage units ES1, second group of energy storage compensation device EC2The two or three intersection-including being sequentially connected in series is straight
Current transformer AD2, second switch power supply DD2With second energy-storage units ES2, similarly and so on, the n-th group energy storage compensation device
ECnIncluding the n-th three phase AC-DC converter AD being sequentially connected in seriesn, the n-th Switching Power Supply DDnWith the n-th energy-storage units ESn.In the present invention
In embodiment, the first switch power supply DD1, second switch power supply DD2... and the n-th Switching Power Supply DDnIt is DC/DC transformation
Device.In addition, the first energy-storage units ES1, second energy-storage units ES2... and the n-th energy-storage units ESnCan for battery,
Any one in super capacitor or flywheel.
Take this, cophase supply and energy-storage function are multiplexed by the embodiment of the present invention using three phase AC-DC converter, save unsteady flow
Device capacity and system investments.In addition, the embodiment of the present invention using low capacity cell module design, improve system reliability and
Scalability, and it is easy to maintain.
The multiple energy storage compensation device is divided into m group power-type energy storage compensation device and n-m group energy type energy storage compensation dress
It sets, and m < n；Wherein, the first energy-storage units ES described in the m group power-type energy storage compensation device1, the second energy storage list
First ES2... and the m energy-storage units ESmFor power-type, m group power-type energy storage compensation device is constituted；The m+1 energy storage
Unit ESm+1, the m+2 energy-storage units ESm+2... and the n-th energy-storage units ESnFor energy type, n-m group energy is constituted
Type energy storage compensation device.Therefore, the present invention uses power-type energy-storage units cycle charge-discharge often, brakes for reclaiming
Energy；Energy type energy-storage units energy is big, is used for load peak clipping.Meanwhile it being set using power-type and the classification of energy type energy storage device
It sets, convenient for working according to his ability, improves utilization rate and the service life of each functional component.
Embodiment two
As shown in Fig. 2, the embodiment of the invention provides a kind of same phase energy storage for power supply of electric railway constructions, wherein institute
Stating same phase energy storage for power supply construction includes for the three-phase electric traction transformer TT by the line voltage pick-up of electric system to traction bus
With spare three-phase electric traction transformer TB, for energy storage compensation device voltage matches and electrical isolation three-phase matching transformer MT,
For the energy storage compensation device of real-time charge and discharge and/or power quality compensation and for detecting traction load operating condition and traction
Payload and the cooperative control device CC for coordinating the real-time charge and discharge control of energy storage compensation device or/and utility power quality control.
The primary side of the three-phase electric traction transformer TT and spare three-phase electric traction transformer TB connect with three-phase electrical power system respectively
It connects, secondary side two-terminal a, b is connect with traction load TL respectively；The three-phase matching transformer MT primary side respectively with the three-phase
The secondary side of tractive transformer TT is connected with the secondary side of the spare three-phase electric traction transformer TB；The multiple energy storage compensation device is
First group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device ECnAnd n is positive
Integer, first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device
ECnExchange end connect respectively with the three-phase matching transformer MT secondary side；The input terminal of the cooperative control device CC is distinguished
Access load feeder Current Transformer Secondary side In1With load bus-bar potential transformer secondary side In2, two-way signaling port point
Not with the first energy storage compensation device EC1, the second energy storage compensation device EC2... and the n-th energy storage compensation device ECnIt is two-way
Signal port connection.In addition to this, it is described when traction load is connected to secondary side terminal a, c or b of three-phase electric traction transformer TT, c
Powered construction is applicable in.
First group of energy storage compensation device EC1Including the first three phase AC-DC converter AD being sequentially connected in series1, first switch
Power supply DD1With first energy-storage units ES1, second group of energy storage compensation device EC2The two or three intersection-including being sequentially connected in series is straight
Current transformer AD2, second switch power supply DD2With second energy-storage units ES2, similarly and so on, the n-th group energy storage compensation device
ECnIncluding the n-th three phase AC-DC converter AD being sequentially connected in seriesn, the n-th Switching Power Supply DDnWith the n-th energy-storage units ESn.In the present invention
In embodiment, the first switch power supply DD1, second switch power supply DD2... and the n-th Switching Power Supply DDnIt is DC/DC transformation
Device.In addition, the first energy-storage units ES1, second energy-storage units ES2... and the n-th energy-storage units ESnCan for battery,
Any one in super capacitor or flywheel.
Take this, cophase supply and energy-storage function are multiplexed by the embodiment of the present invention using three phase AC-DC converter, save unsteady flow
Device capacity and system investments.In addition, the embodiment of the present invention using low capacity cell module design, improve system reliability and
Scalability, and it is easy to maintain.
The multiple energy storage compensation device is divided into m group power-type energy storage compensation device and n-m group energy type energy storage compensation dress
It sets, and m < n；Wherein, the first energy-storage units ES described in the m group power-type energy storage compensation device1, the second energy storage list
First ES2... and the m energy-storage units ESmFor power-type, m group power-type energy storage compensation device is constituted；The m+1 energy storage
Unit ESm+1, the m+2 energy-storage units ESm+2... and the n-th energy-storage units ESnFor energy type, n-m group energy is constituted
Type energy storage compensation device.Therefore, the present invention uses power-type energy-storage units cycle charge-discharge often, brakes for reclaiming
Energy；Energy type energy-storage units energy is big, is used for load peak clipping.Meanwhile it being set using power-type and the classification of energy type energy storage device
It sets, convenient for working according to his ability, improves utilization rate and the service life of each functional component.
Embodiment three
As shown in figure 3, the embodiment of the invention provides a kind of controlling parties of the same phase energy storage for power supply of electric railway construction
Method, wherein the specific steps of the control method include:
Step 1: using load feeder Current Transformer Secondary side In1With load bus-bar potential transformer secondary side In2Come
Detect traction load operating condition and traction load size；
Step 2: coordinating first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and
The n-th group energy storage compensation device ECnReal-time perfoming charge and discharge control or/and utility power quality control.
As shown in figure 4, in embodiments of the present invention, the specific method of the charge and discharge control described in step 2 includes such as
Under:
Using cooperative control device CC statistical history day traction load data, and traction is calculated with fixed cycle and slippage and is born
Power average value of the lotus in the entire time cycle obtains history day power demand curve, the maximum demand contract in period seclected time
About it is worth, is judged to divide regenerating braking energy benefit according to maximum demand contract value, power demand curve and entire time cycle
With control interval and the peak control interval that disappears；
When the power demand value of traction load is less than maximum demand contract value, i.e., power demand curve is located at maximum demand
It is that regenerating braking energy utilizes control interval, and the section is with priority acccess control m group power-type energy storage benefit that contract, which is worth section below,
It repays based on device work；When detection traction load runs on traction working condition, control first group of energy storage compensation device EC1, institute
State second group of energy storage compensation device EC2... and the m group energy storage compensation device ECmElectric discharge；When detection traction load operation
In regenerative braking operating condition, first group of energy storage compensation device EC is controlled1, second group of energy storage compensation device EC2... and
The m group energy storage compensation device ECmCharging；
When the power demand value of traction load is greater than maximum demand contract value, i.e., power demand curve is located at maximum demand
Section more than contract value is the peak control interval that disappears, and the section is with the work of priority acccess control n-m group energy type energy storage compensation device
Based on, control the m+1 group energy storage compensation device ECm+1, the m+2 group energy storage compensation device ECm+2... and described
N group energy storage compensation device ECnIt discharges by peak clipping a reference value, realizes traction load peak clipping.In embodiments of the present invention, described
Peak clipping a reference value is the charge and discharge threshold value of energy storage device ED, and the peak in former power demand curve can be made to be reduced to maximum demand contract
Value.
As shown in figure 5, in order to be best understood from the specific method of charge and discharge control described in the embodiment of the present invention.Spy is listed below
Example explanation: statistics traction substation surveys history voltage, current data, calculates traction load power, and obtaining power in figure needs
Measure curve, wherein power is traction state when being greater than 0, is regenerative braking state when power is less than 0；To power data with 15 points
Clock is to calculate average value the period, and press 1 minute progress slippage, calculates the power average value of entire time range, obtains indicated work
Rate requirement curve, the maximum value in power demand curve are the power maximum demand of this time section.It is assumed that power after peak clipping
Maximum demand desired value is 32MW, this value is as maximum demand contract value, as shown in the broken line position in Figure 5, then maximum demand contract
About value and power demand curve has 4 intersection points, and 1., 2., 3., 4. and 5. power demand curve is divided into five parts.Wherein,
1., power demand value 3., 5. be respectively less than 32MW, be not required to energy storage compensation device carry out peak clipping, be divided into regenerating braking energy benefit
With control interval, this section is mainly used to regenerating braking energy；4. 2. power demand value be greater than 32MW, need to lead to
It crosses energy storage compensation device and carries out peak clipping, reduce power demand, be divided into the peak control interval that disappears, this section mainly passes through continuous discharge
Control carries out peak clipping.2. or the area 4. enclosed with dotted line shown in 32MW is the energy that energy storage compensation device needs continuous discharge.
As shown in fig. 6, in embodiments of the present invention, the specific method of the control of the power quality compensation described in step 2
Are as follows: under the premise of charge and discharge control, calculate voltage unbalance factor (power quality) index of traction load；Work as voltage unbalance factor
When (power quality) index has reached pre-set limit requirement, then first group of energy storage compensation device EC is controlled1, it is second group described
Energy storage compensation device EC2... and the n-th group energy storage compensation device ECnSame-phase compensation electric current be 0；Work as voltage unbalance factor
When (power quality) is not up to pre-set limit requirement, then first group of energy storage compensation device EC is controlled1, second group of energy storage
Compensation device EC2... and the n-th group energy storage compensation device ECnSame-phase compensation electric current is generated respectively is superimposed on charge and discharge control
Electric current makes voltage unbalance factor power quality index reach national standard limit requirement.In addition to voltage unbalance factor, electric railway are closed
There are also harmonic waves and idle for the power quality index of note.The pre-set limit is according to power quality national standard to voltage unbalance factor requirement
Come the threshold value set.Such as: it is provided according to national standard " GB/T 15543-2008 power quality imbalance of three-phase voltage ": electricity
When net operates normally, negative sequence voltage degree of unbalancedness is no more than 2%, must not exceed 4% in short-term.About harmonic wave and reactive limit value, by
It directly hands over Electric Locomotive Harmonic and idle content very low in current friendship, can disregard.
In embodiments of the present invention, the electric current and the n-m group energy of each corresponding phase of m group power-type energy storage compensation device
The electric current of each corresponding phase of amount type energy storage compensation device is equal.The correspondence mutually refers to that each energy storage compensation device has ABC three-phase,
Required in practice the electric current of the A phase of each energy storage compensation device, B phase and C phase respectively with the A phase of three-phase electrical power system, B
Mutually it is equal to each other with the electric current of C phase.
In embodiments of the present invention, the secondary side electric current for remembering three-phase matching transformer MT is respectively iM1、iM2And iM3, when described
First group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group energy storage compensation device ECn
When for charging/discharging function, the biphase current i of the secondary side of corresponding three-phase matching transformer MT where control traction load TLM1、
iM2Carry out energy exchange, and another phase current iM3It is 0；
As first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group
Energy storage compensation device ECnWhen for power quality compensation, the three-phase current i of the secondary side of three-phase matching transformer MT is controlledM1、iM2With
iM3It compensates, and electric current iM1、iM2And iM3The sum of be 0；
As first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group
Energy storage compensation device ECnExisting charging/discharging function has power quality compensation again when, i is controlledM1、iM2And iM3For charge and discharge control electricity
The superposition of stream and same-phase compensation electric current.
Therefore, the embodiment of the present invention according to traction load historical data and combines energy storage compensation device characteristic, according to the time period
Regenerating braking energy is divided using section and the peak section that disappears, power-type energy storage compensation device priority task is in regenerating braking energy benefit
With section, regenerating braking energy utilization is carried out, it is energy saving；Energy type energy storage compensation device priority task in peak clipping section, into
Row peak clipping reduces traction power supply cost.Meanwhile the embodiment of the present invention is conducive to optimize Traction Substation of Electric Railway economy section
Can operation, thus reach traction load disappear peak and reduce systematic running cost use, can also efficiently use train regenerating braking energy.
Claims (9)
1. a kind of same phase energy storage for power supply of electric railway constructs, which is characterized in that the same phase energy storage for power supply, which constructs, includes:
Three-phase electric traction transformer TT, for by the line voltage pick-up of three-phase electrical power system to traction bus, the three-phase traction to become
Depressor TT primary side is connect with three-phase electrical power system, and any two ends of secondary side is connect with traction load TL；
Three-phase matching transformer MT, for the voltage matches and electrical isolation of energy storage compensation device, the three-phase matching transformer
MT primary side is connect with the secondary side of the three-phase electric traction transformer TT；
Energy storage compensation device, is used for real-time charge and discharge and/or power quality compensation, and the energy storage compensation device is first group of energy storage
Compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device ECnAnd n is positive integer, described the
One group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and n-th group energy storage compensation device ECnExchange end point
It is not connect with the three-phase matching transformer MT secondary side；
Cooperative control device CC, for detecting traction load operating condition and traction load size and coordinating energy storage compensation device reality
When charge and discharge control or/and utility power quality control, the input terminal of the cooperative control device CC be respectively connected to load feeder electric current
Mutual inductor secondary side In1With load bus-bar potential transformer secondary side In2, two-way signaling port respectively with first energy storage
Compensation device EC1, the second energy storage compensation device EC2... and the n-th energy storage compensation device ECnTwo-way signaling port connection.
2. a kind of same phase energy storage for power supply of electric railway according to claim 1 constructs, which is characterized in that described first
Group energy storage compensation device EC1Including the first three phase AC-DC converter AD being sequentially connected in series1, first switch power supply DD1With the first storage
It can unit ES1, second group of energy storage compensation device EC2Including the second three phase AC-DC converter AD being sequentially connected in series2, second open
Powered-down source DD2With second energy-storage units ES2, the n-th group energy storage compensation device ECnThe n-th three intersections-including being sequentially connected in series are straight
Current transformer ADn, the n-th Switching Power Supply DDnWith the n-th energy-storage units ESn。
3. a kind of same phase energy storage for power supply of electric railway according to claim 2 constructs, which is characterized in that the energy storage
Compensation device is divided into m group power-type energy storage compensation device and n-m group energy type energy storage compensation device, and m < n；Wherein, in the m
First energy-storage units ES described in group power-type energy storage compensation device1, the second energy-storage units ES2... and m storage
It can unit ESmFor power-type, m group power-type energy storage compensation device is constituted；The m+1 energy-storage units ESm+1, m+2 storage
It can unit ESm+2... and the n-th energy-storage units ESnFor energy type, n-m group energy type energy storage compensation device is constituted.
4. a kind of same phase energy storage for power supply of electric railway according to claim 1 constructs, which is characterized in that further include using
Make the spare three-phase electric traction transformer TB of the spare transformer of three-phase electric traction transformer TT, the spare three-phase electric traction transformer TB
Primary side is connect with three-phase electrical power system, and any two ends of secondary side is connect with traction load；The spare three-phase traction transformation
Device TB secondary side is also connect with the primary side of the three-phase matching transformer MT.
5. the controlling party that a kind of same phase energy storage for power supply of electric railway as described in above-mentioned any one of claims 1 to 4 constructs
Method, it is characterised in that: the specific steps of the control method include:
Step 1: using load feeder Current Transformer Secondary side In1With load bus-bar potential transformer secondary side In2To detect
Traction load operating condition and traction load size；
Step 2: coordinating first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and it is described
N-th group energy storage compensation device ECnReal-time perfoming charge and discharge control or utility power quality control.
6. the control method that a kind of same phase energy storage for power supply of electric railway according to claim 5 constructs, feature
It is, the specific method of charge and discharge control includes the following: in the step 2
Using cooperative control device CC statistical history day traction load data, and traction load is calculated with fixed cycle and slippage and is existed
The power average value of entire time cycle obtains history day power demand curve, the maximum demand contract in period seclected time
Value judges that dividing regenerating braking energy utilizes according to maximum demand contract value, power demand curve and entire time cycle
Control interval and the peak control interval that disappears；
When the power demand value of traction load is less than maximum demand contract value, i.e., power demand curve is located at maximum demand contract
Being worth section below is regenerating braking energy using control interval, and the section is compensated with priority acccess control m group power-type energy storage and filled
It sets based on work；When detection traction load runs on traction working condition, control first group of energy storage compensation device EC1, described
Two groups of energy storage compensation device EC2... and the m group energy storage compensation device ECmElectric discharge；When detection traction load is run on again
Raw damped condition, controls first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and it is described
M group energy storage compensation device ECmCharging；
When the power demand value of traction load is greater than maximum demand contract value, i.e., power demand curve is located at maximum demand contract
More than value section is the peak control interval that disappears, and the section is based on the work of priority acccess control n-m group energy type energy storage compensation device,
Control the m+1 group energy storage compensation device ECm+1, the m+2 group energy storage compensation device ECm+2... and n-th group storage
It can compensation device ECnIt discharges by peak clipping a reference value, realizes traction load peak clipping.
7. the control method that a kind of same phase energy storage for power supply of electric railway according to claim 5 constructs, feature
It is, the specific method of the control of the power quality compensation described in step 2 includes the following:
Under the premise of charge and discharge control, the voltage unbalance factor index of traction load is calculated；When voltage unbalance factor index has reached
When requiring to pre-set limit, then first group of energy storage compensation device EC is controlled1, second group of energy storage compensation device
EC2... and the n-th group energy storage compensation device ECnSame-phase compensation electric current be 0；When voltage unbalance factor index is not up to pre-
When value of limiting requires, then first group of energy storage compensation device EC is controlled1, second group of energy storage compensation device EC2... and
The n-th group energy storage compensation device ECnSame-phase compensation electric current is generated respectively is superimposed on charge and discharge control electric current.
8. a kind of control of the same phase energy storage for power supply construction of electric railway according to any one of claim 6 to 7
Method, which is characterized in that the electric current of each corresponding phase of m group power-type energy storage compensation device and the n-m group energy type energy storage
The electric current of each corresponding phase of compensation device is equal.
9. a kind of control method of the same phase energy storage for power supply construction of electric railway, feature according to claim 6 to 7
It is, the secondary side electric current of note three-phase matching transformer MT is respectively iM1、iM2And iM3, when first group of energy storage compensation device
EC1, second group of energy storage compensation device EC2... and the n-th group energy storage compensation device ECnWhen for charging/discharging function, control
The biphase current i of the secondary side of corresponding three-phase matching transformer MT where traction load processedM1、iM2Energy exchange is carried out, and another
One phase current iM3It is 0；
As first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group energy storage
Compensation device ECnWhen for power quality compensation, the three-phase current i of the secondary side of three-phase matching transformer MT is controlledM1、iM2And iM3Into
Row compensation, and electric current iM1、iM2And iM3The sum of be 0；
As first group of energy storage compensation device EC1, second group of energy storage compensation device EC2... and the n-th group energy storage
Compensation device ECnExisting charging/discharging function has power quality compensation again when, i is controlledM1、iM2And iM3For charge and discharge control electric current and
The superposition of same-phase compensation electric current.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190613A (en) * | 2019-07-03 | 2019-08-30 | 深圳市泰昂能源科技股份有限公司 | Distribution regulating device and distribution adjusting method |
| CN110601242A (en) * | 2019-10-21 | 2019-12-20 | 西南交通大学 | Power supply and energy storage structure of traction substation and control method thereof |
| CN110729731A (en) * | 2019-11-22 | 2020-01-24 | 西南交通大学 | Through type in-phase power supply structure of electrified railway and control method thereof |
| WO2021184693A1 (en) * | 2020-03-16 | 2021-09-23 | 株洲中车时代电气股份有限公司 | Power peak regulation system and method for railway traction substation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651554A (en) * | 2011-02-24 | 2012-08-29 | 同济大学 | Control method and device for accessing energy-storage photovoltaic system into urban rail traction network |
| KR20130074692A (en) * | 2011-12-26 | 2013-07-04 | 주식회사 우진산전 | Device of improving ac power quality with super capacitor(edlc) |
| CN203774792U (en) * | 2014-03-24 | 2014-08-13 | 国家电网公司 | High speed railway power quality and traction network voltage integration compensation system |
| CN106159982A (en) * | 2016-07-26 | 2016-11-23 | 湖南华大紫光科技股份有限公司 | Unified energy storage and conversion control system |
| CN109617044A (en) * | 2018-11-20 | 2019-04-12 | 成都尚华电气有限公司 | A kind of electrified railway in-phase power supply system based on V/V wiring |
-
2019
- 2019-04-24 CN CN201910332002.3A patent/CN109936135B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651554A (en) * | 2011-02-24 | 2012-08-29 | 同济大学 | Control method and device for accessing energy-storage photovoltaic system into urban rail traction network |
| KR20130074692A (en) * | 2011-12-26 | 2013-07-04 | 주식회사 우진산전 | Device of improving ac power quality with super capacitor(edlc) |
| CN203774792U (en) * | 2014-03-24 | 2014-08-13 | 国家电网公司 | High speed railway power quality and traction network voltage integration compensation system |
| CN106159982A (en) * | 2016-07-26 | 2016-11-23 | 湖南华大紫光科技股份有限公司 | Unified energy storage and conversion control system |
| CN109617044A (en) * | 2018-11-20 | 2019-04-12 | 成都尚华电气有限公司 | A kind of electrified railway in-phase power supply system based on V/V wiring |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190613A (en) * | 2019-07-03 | 2019-08-30 | 深圳市泰昂能源科技股份有限公司 | Distribution regulating device and distribution adjusting method |
| CN110601242A (en) * | 2019-10-21 | 2019-12-20 | 西南交通大学 | Power supply and energy storage structure of traction substation and control method thereof |
| CN110601242B (en) * | 2019-10-21 | 2024-06-11 | 西南交通大学 | Power supply energy storage structure of traction substation and control method thereof |
| CN110729731A (en) * | 2019-11-22 | 2020-01-24 | 西南交通大学 | Through type in-phase power supply structure of electrified railway and control method thereof |
| CN110729731B (en) * | 2019-11-22 | 2024-04-12 | 西南交通大学 | Through type in-phase power supply structure of electrified railway and control method thereof |
| WO2021184693A1 (en) * | 2020-03-16 | 2021-09-23 | 株洲中车时代电气股份有限公司 | Power peak regulation system and method for railway traction substation |
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