CN103269094A - Method for controlling charging and discharging of energy storage unit of urban railway system - Google Patents
Method for controlling charging and discharging of energy storage unit of urban railway system Download PDFInfo
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- CN103269094A CN103269094A CN2013101591038A CN201310159103A CN103269094A CN 103269094 A CN103269094 A CN 103269094A CN 2013101591038 A CN2013101591038 A CN 2013101591038A CN 201310159103 A CN201310159103 A CN 201310159103A CN 103269094 A CN103269094 A CN 103269094A
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Abstract
The invention relates to a method for controlling charging and discharging of an energy storage unit of an urban railway system. The method comprises the following steps: (1) sampling a signal, (2) computing traction power P of a direct current bus of a tested automobile, and computing traction upper limit power PU of the automobile and traction lower limit power PD of the automobile, (3) comparing and implementing: a, comparing the traction power P and the traction lower limit power PD, and b, comparing the traction power P and the traction upper limit power PU. The method controls few control variables and ensures high precision and high reliability of a controller.
Description
Technical field
The present invention relates to a kind of control method that discharges and recharges for control urban track traffic energy-storage units, particularly disclose a kind of control signal Detection ﹠ Controling method for control urban track traffic energy-storage units.
Background technology
It is big that urban track traffic has a freight volume, safety, characteristics such as energy savings, become one of main vehicles of modern city, it has played important function in urban development, but because the power supply of urban track traffic and impact, the uncertainty of electricity consumption make urban track traffic bring huge pollution to electric power system.When urban track traffic starts, draw active power fast from electrical network, during braking, to electrical network feedback active power, this brings influence will for the safe and stable operation of electric power system.Energy-storage units can play quick storage power in electric power system, to the load peak load shifting, improve system reliability and stability, reduce characteristics such as system reserve demand, be applied to urban track traffic to improve the quick variation of active power, and then make the crest voltage of each element and loss reduce greatly, to containing the obvious effect of having played of power supply of urban orbit traffic system.
The control method of urban track traffic energy-storage units is that can energy-storage units accurately absorb or release energy, and improves the important technology part of electric power system fail safe.Yet there are no the control signal Detection ﹠ Controling method of the urban track traffic energy storage controller that response speed is fast, control precision is high.
Summary of the invention
The present invention is directed to above problem and the control method that is used for control urban track traffic energy-storage units that a kind of response speed is fast, robustness is good is provided.
The technical solution adopted for the present invention to solve the technical problems:
A kind of for controlling the control method that the urban track traffic energy-storage units discharges and recharges, it is characterized in that may further comprise the steps:
(1) signal sampling step:
To urban track traffic access point locomotive dc bus, handle period T at a signal
SInterior constant duration ground is gathered n voltage U (i) and electric current I (i) signal, i=1,2 respectively ... n,
Wherein, n=T
S/ T
0, T
0Be the sampling period of setting;
(2) calculation procedure:
A. calculate the traction power P of described tested engine dc bus by following formula (1):
Wherein, P is the traction power of described tested engine dc bus, and unit is kW,
U(i) be i sample voltage value of described tested engine dc bus, unit is kV,
I(i) be i sample rate current value of tested engine dc bus, unit is kA;
B. calculate locomotive traction Upper Bound Power P by following formula (2) and formula (3)
UWith locomotive traction lower limit power P
D:
Wherein, P
1~ P
2Be the scope of the locomotive traction Upper Bound Power set, unit is kW,
P
3~ P
4Be the scope of the locomotive traction lower limit power set, unit is kW,
P
JBe the traction power of locomotive sampling instant, unit is kW,
P
MBe the maximum traction power of locomotive, unit is kW,
V is the speed of locomotive sampling instant, and unit is km/h,
V
MBe the locomotive maximal rate, unit is km/h;
(3) relatively reach execution in step:
A. more described traction power P and described traction lower limit power P
DSize:
If described traction power P is greater than described traction lower limit power P
D, then change next step;
If described traction power P is less than described traction lower limit power P
D, then the energy-storage units on the described tested engine dc bus is charged charge power P
CBe both differences, i.e. charge power
, rechargeable energy returns step (1) then up to the maximum storage energy that reaches energy-storage units;
B. more described traction power P and described traction Upper Bound Power P
USize:
If described traction power P is greater than described traction Upper Bound Power P
U, then described energy-storage units discharges, discharge power P
FBe both differences, i.e. discharge power
, discharge energy is 0 up to the energy of energy-storage units, returns step (1) then;
If described traction power P is less than described traction Upper Bound Power P
U, then directly return step (1).
Beneficial effect of the present invention is:
(1) the present invention only need gather the control that namely realizes energy-storage units to the voltage and current signal of urban track traffic locomotive dc bus, required control variables is few, by controlling less control variables, just can realize excellent control effect, guarantee high precision and the high reliability of controller;
(2) the present invention has adopted the two paths of signals collection, has reduced the delay time of control signal output, has further guaranteed the response speed of controller.
Embodiment
Present embodiment gets final product according to the technical scheme concrete operations in the summary of the invention part.
Claims (1)
1. one kind is used for the control method that control urban track traffic energy-storage units discharges and recharges, and it is characterized in that may further comprise the steps:
(1) signal sampling step:
To urban track traffic access point locomotive dc bus, handle period T at a signal
SInterior constant duration ground is gathered n voltage U (i) and electric current I (i) signal, i=1,2 respectively ... n,
Wherein, n=T
S/ T
0, T
0Be the sampling period of setting;
(2) calculation procedure:
A. calculate the traction power P of described tested engine dc bus by following formula (1):
Wherein, P is the traction power of described tested engine dc bus, and unit is kW,
U(i) be i sample voltage value of described tested engine dc bus, unit is kV,
I(i) be i sample rate current value of tested engine dc bus, unit is kA;
B. calculate locomotive traction Upper Bound Power P by following formula (2) and formula (3)
UWith locomotive traction lower limit power P
D:
Wherein, P
1~ P
2Be the scope of the locomotive traction Upper Bound Power set, unit is kW,
P
3~ P
4Be the scope of the locomotive traction lower limit power set, unit is kW,
P
JBe the traction power of locomotive sampling instant, unit is kW,
P
MBe the maximum traction power of locomotive, unit is kW,
V is the speed of locomotive sampling instant, and unit is km/h,
V
MBe the locomotive maximal rate, unit is km/h;
(3) relatively reach execution in step:
A. more described traction power P and described traction lower limit power P
DSize:
If described traction power P is greater than described traction lower limit power P
D, then change next step;
If described traction power P is less than described traction lower limit power P
D, then the energy-storage units on the described tested engine dc bus is charged charge power P
CBe both differences, i.e. charge power
, rechargeable energy returns step (1) then up to the maximum storage energy that reaches energy-storage units;
B. more described traction power P and described traction Upper Bound Power P
USize:
If described traction power P is greater than described traction Upper Bound Power P
U, then described energy-storage units discharges, discharge power P
FBe both differences, i.e. discharge power
, discharge energy is 0 up to the energy of energy-storage units, returns step (1) then;
If described traction power P is less than described traction Upper Bound Power P
U, then directly return step (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159103.8A CN103269094B (en) | 2013-05-03 | 2013-05-03 | Method for controlling charging and discharging of energy storage unit of urban railway system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159103.8A CN103269094B (en) | 2013-05-03 | 2013-05-03 | Method for controlling charging and discharging of energy storage unit of urban railway system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103269094A true CN103269094A (en) | 2013-08-28 |
| CN103269094B CN103269094B (en) | 2015-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394261A (en) * | 2016-09-30 | 2017-02-15 | 株洲中车时代电气股份有限公司 | Charging power distribution method and system for energy storage type urban rail train |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120104034A (en) * | 2011-03-11 | 2012-09-20 | 한국과학기술원 | Battery charging and discharging control method and apparatus for electric vehicles with wireless power supply |
| CN102975623A (en) * | 2012-12-27 | 2013-03-20 | 湖南恒信电气有限公司 | Control method and device for dual-mode absorption device of urban rail traffic |
| CN202888913U (en) * | 2012-11-19 | 2013-04-17 | 周锡卫 | Energy storage control device of distributed new energy power system |
-
2013
- 2013-05-03 CN CN201310159103.8A patent/CN103269094B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120104034A (en) * | 2011-03-11 | 2012-09-20 | 한국과학기술원 | Battery charging and discharging control method and apparatus for electric vehicles with wireless power supply |
| CN202888913U (en) * | 2012-11-19 | 2013-04-17 | 周锡卫 | Energy storage control device of distributed new energy power system |
| CN102975623A (en) * | 2012-12-27 | 2013-03-20 | 湖南恒信电气有限公司 | Control method and device for dual-mode absorption device of urban rail traffic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394261A (en) * | 2016-09-30 | 2017-02-15 | 株洲中车时代电气股份有限公司 | Charging power distribution method and system for energy storage type urban rail train |
| CN106394261B (en) * | 2016-09-30 | 2018-11-06 | 株洲中车时代电气股份有限公司 | A kind of energy storage type municipal rail train charge power distribution method and system |
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| Publication number | Publication date |
|---|---|
| CN103269094B (en) | 2015-05-06 |
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