CN108839572B - Power management system - Google Patents

Power management system Download PDF

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Publication number
CN108839572B
CN108839572B CN201810573467.3A CN201810573467A CN108839572B CN 108839572 B CN108839572 B CN 108839572B CN 201810573467 A CN201810573467 A CN 201810573467A CN 108839572 B CN108839572 B CN 108839572B
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Prior art keywords
current
train
energy storage
storage device
preset position
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CN201810573467.3A
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CN108839572A (en
Inventor
杨丹丹
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Taizhou plain Zhen Peng Information technologies Co.,Ltd.
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Taizhou Plain Zhen Peng Information Technologies Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Abstract

The invention belongs to the field of electrified rail transit,the power management system comprises a data acquisition device, a speed sensor, a photoelectric sensor, a current regulation device and a controller, wherein when sand storm weather appears at a preset position, the current of the energy storage device is increased at the current position of the train, and when the preset position is reached, the current of the energy storage device is increased at d1Not equal to d, the discharge current of the energy storage device is increased, and d is1And d, reducing the discharging current of the energy storage device, and when rain weather occurs at the preset position, reducing the running speed of the train and reducing the charging current of the energy storage device at the preset position. The power management system reasonably adjusts the current adjusting device according to the weather data of the preset position and the distance between the wheel center point and the road surface, so that the charging and discharging current of the energy storage device is kept stable, and the effect of stable train running is achieved.

Description

Power management system
Technical Field
The invention belongs to the field of electrified rail transit, and particularly relates to a power management system.
Background
Regenerative electric power is often used or stored in electrified rail transit as power for other traction trains, such as:
a power management device and a power management system of a patent product of toshiba corporation can charge and discharge a power storage device in a planned manner based on train information including an operation schedule (see patent document CN 104583001A).
A railroad system of a patent product manufactured by hitachi corporation can determine the supply of electric power to a power storage device based on a vehicle position, a vehicle speed, and whether the vehicle is in a power running state, a coasting running state, or a braking state (see patent document CN 104379397A).
Siemens limited proprietary products are adapted to supply power to power lines to supply power to a power conditioning system of a vehicle, delivering the conditioned power to an energy storage device according to the energy fluctuations required by the instantaneous traffic density (refer to patent document CN 102123883A).
Disclosure of Invention
The invention provides a power management system which adjusts charging and discharging of an energy storage device in a power grid based on external data except a vehicle running state so that the utilization of regenerative braking power is timely and accurate, and the impact of the discharging process of the energy storage device on a direct current power grid is small. It includes:
the data acquisition device is arranged on the train and used for acquiring weather data at a preset position;
speed sensor installed in trainFor monitoring the current running speed V of the train in real time1；
A photoelectric sensor arranged at the wheel center point of the train for monitoring the first distance d between the wheel center point and the upper surface of the rail in real time1；
Further comprising:
the current adjusting device consists of two equivalent resistors and a gear switch, and adjusts the magnitude of charging current and discharging current of the energy storage device in the charging and discharging process by adjusting the connection mode of the two equivalent resistors through the gear switch;
the controller is connected with the data acquisition device, the speed sensor, the photoelectric sensor, the current adjusting device and the energy storage device in a signal mode;
the controller is configured to:
when sand storm weather occurs at a preset position, the attachment probability of sand on the upper surface of the rail is increased, the sand attached to the upper surface of the rail can enable the first distance between the center point of the wheel and the upper surface of the rail to be changed continuously, so that the contact area of the contact line and the pantograph is changed along with the change of the contact area, the current of the pantograph is unstable, the energy storage device needs to provide larger discharge current to keep the current running state of the train, therefore, the connection mode of two resistors in the current regulating device is regulated from series connection to connection of only one resistor by the gear switch at the current position of the train, and the discharge current in the discharge loop of the energy storage device is regulated from I1Increase to I2When the train reaches the preset position, judging d again1In relation to d, at d1When the current is not equal to d, the actual current of the pantograph is reduced, the gear switch is controlled to adjust the connection mode of two resistors in the current adjusting device from the connection of only one resistor to the parallel connection, so that the discharge current in the discharge loop of the energy storage device is adjusted from I2Further increase to I3At d1Under the condition that d is not changed, the actual current of the pantograph is unchanged, the gear switch is controlled to restore the connection mode of the two resistors in the current regulating device from the connection of only one resistor to the series connection, and the discharging current in the discharging loop of the energy storage device is enabled to be from I2Is restored to I1；
When rain weather occurs at a preset position, the possibility of wet slip of the upper surface of the rail can exist, the train is unsafe to run due to the wet slip of the upper surface of the rail, and therefore the train running speed is changed from V at the preset position1Down to V2Simultaneously controlling the gear switch to adjust the connection mode of two resistors in the current adjusting device from parallel connection to series connection, so that the charging current in the charging loop of the energy storage device is I4Is reduced to I5To ensure the running safety of the train and the safety of the feed circuit;
wherein the preset position is the distance d between the front of the train and the current position2The position of (a).
The invention has the beneficial effects that: the power management system reasonably adjusts the current adjusting device according to the weather data of the preset position and the distance between the wheel center point and the road surface, so that the charging and discharging current of the energy storage device is kept stable, and the effect of stable train running is achieved.
Drawings
Fig. 1 shows a schematic representation of the variation of the first distance when sand is present at a predetermined position.
Detailed Description
The structure of the present system and the functions performed are described in detail below with reference to the accompanying drawings.
A data acquisition device 1 provided on the train 2 for acquiring weather data at a predetermined position;
a speed sensor 3 arranged on the train 2 for monitoring the current running speed V of the train 2 in real time1；
A photoelectric sensor 4 arranged on the wheel center point of the train 2 for monitoring the first distance d between the wheel center point and the upper surface of the rail in real time1；
Further comprising:
the current adjusting device 5 consists of two equivalent resistors and a gear switch, and adjusts the magnitude of charging current and discharging current in the charging and discharging processes of the energy storage device 6 by adjusting the connection mode of the two equivalent resistors through the gear switch;
the controller 7 is in signal connection with the data acquisition device 1, the speed sensor 3, the photoelectric sensor 4, the current adjusting device 5 and the energy storage device 6;
the controller 7 is configured to:
when sand storm weather occurs at a preset position, the attachment probability of sand on the upper surface of the rail is increased, the sand attached to the upper surface of the rail can enable the first distance between the center point of the wheel and the upper surface of the rail to be changed continuously, so that the contact area of the contact line and the pantograph is changed along with the change of the contact area, the current of the pantograph is unstable, the energy storage device is required to provide larger discharge current to keep the current running state of the train, therefore, the connection mode of two equivalent resistors in the current regulating device is adjusted from series connection to connection of only one resistor by the gear switch at the current position of the train, and the discharge current in the discharge loop of the energy storage device is adjusted from I to I1Increase to I2When the train reaches the preset position, judging d again1In relation to d, at d1When the current is not equal to d, the actual current of the pantograph is reduced, the gear switch is controlled to adjust the connection mode of two equivalent resistors in the current adjusting device from the connection of only one resistor to the parallel connection, so that the discharge current in the discharge loop of the energy storage device is adjusted from I2Further increase to I3At d1Under the condition that d is not changed, the actual current of the pantograph is unchanged, the gear switch is controlled to restore the connection mode of two equivalent resistors in the current regulating device from connecting only one resistor to series connection, so that the discharge current in the discharge loop of the energy storage device is changed from I2Is restored to I1；
When rain weather occurs at a preset position, the possibility of wet slip of the upper surface of the rail can exist, the train is unsafe to run due to the wet slip of the upper surface of the rail, and therefore the train running speed is changed from V at the preset position1Down to V2The gear switch is controlled to adjust the connection mode of two equivalent resistors in the current adjusting device from parallel connection to series connection, so that the charging current in the charging loop of the energy storage device is adjusted from I4Is reduced to I5The train brake is ensured to be rapid and accurate so as to ensure the running safety of the train and the safety of the energy feedback circuit;
it will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the spirit or scope of the invention as broadly described. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. Likewise, the invention encompasses any combination of features, in particular of features in the patent claims, even if this feature or this combination of features is not explicitly specified in the patent claims or in the individual embodiments herein.

Claims (1)

1. A power management system comprising
The data acquisition device is arranged on the train and used for acquiring weather data at a preset position;
a speed sensor arranged on the train for monitoring the current running speed V of the train in real time1；
A photoelectric sensor arranged at the wheel center point of the train for monitoring the first distance d between the wheel center point and the upper surface of the rail in real time1；
It is characterized in that the preparation method is characterized in that,
the current adjusting device consists of two equivalent resistors and a gear switch, and adjusts the magnitude of charging current and discharging current of the energy storage device in the charging and discharging process by adjusting the connection mode of the two equivalent resistors through the gear switch;
the controller is connected with the data acquisition device, the speed sensor, the photoelectric sensor, the current adjusting device and the energy storage device in a signal mode;
the controller is configured to:
when sand storm weather occurs at a preset position, the attachment probability of sand on the upper surface of the rail is increased, the sand attached to the upper surface of the rail can enable the first distance between the center point of the wheel and the upper surface of the rail to be changed continuously, so that the contact area of the contact line and the pantograph is changed along with the change of the contact area, the current of the pantograph is unstable, the energy storage device needs to provide larger discharge current to keep the current running state of the train, and therefore the gear switch is controlled at the current position of the trainThe connection mode of two resistors in the current regulating device is adjusted from series connection to connection of only one resistor, so that the discharge current in the discharge loop of the energy storage device is changed from I1Increase to I2When the train reaches the preset position, judging d again1In relation to a constant value d, at d1When the current is not equal to d, the actual current of the pantograph is reduced, the gear switch is controlled to adjust the connection mode of two resistors in the current adjusting device from the connection of only one resistor to the parallel connection, so that the discharge current in the discharge loop of the energy storage device is adjusted from I2Further increase to I3At d1Under the condition that d is not changed, the actual current of the pantograph is unchanged, the gear switch is controlled to restore the connection mode of the two resistors in the current regulating device from the connection of only one resistor to the series connection, and the discharging current in the discharging loop of the energy storage device is enabled to be from I2Is restored to I1；
When rain weather occurs at a preset position, the possibility of wet slip of the upper surface of the rail can exist, the train is unsafe to run due to the wet slip of the upper surface of the rail, and therefore the train running speed is changed from V at the preset position1Down to V2Simultaneously controlling the gear switch to adjust the connection mode of two resistors in the current adjusting device from parallel connection to series connection, so that the charging current in the charging loop of the energy storage device is I4Is reduced to I5To ensure the running safety of the train and the safety of the feed circuit;
wherein the preset position is the distance d between the front of the train and the current position2The position of (a).
CN201810573467.3A 2018-06-06 2018-06-06 Power management system Active CN108839572B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810573467.3A CN108839572B (en) 2018-06-06 2018-06-06 Power management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810573467.3A CN108839572B (en) 2018-06-06 2018-06-06 Power management system

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CN108839572B true CN108839572B (en) 2021-12-03

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228937A1 (en) * 1992-08-31 1994-03-03 Stahl Johann Rail vehicle for solar-powered track section - uses solar cells supported on either side of track together with current supply rail contacted by train
CN101376344A (en) * 2008-09-28 2009-03-04 东南大学 Multiple-target integrated control energy-saving method of electric power supply system for subway
WO2013064447A2 (en) * 2011-11-04 2013-05-10 Siemens Aktiengesellschaft System for performing traffic control of electrically driven vehicles in a road network
CN104170208A (en) * 2012-09-28 2014-11-26 株式会社东芝 Railway power management device, railway power management method, and railway power management program

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4468459B2 (en) * 2008-02-18 2010-05-26 三菱重工業株式会社 Contact member for current collection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228937A1 (en) * 1992-08-31 1994-03-03 Stahl Johann Rail vehicle for solar-powered track section - uses solar cells supported on either side of track together with current supply rail contacted by train
CN101376344A (en) * 2008-09-28 2009-03-04 东南大学 Multiple-target integrated control energy-saving method of electric power supply system for subway
WO2013064447A2 (en) * 2011-11-04 2013-05-10 Siemens Aktiengesellschaft System for performing traffic control of electrically driven vehicles in a road network
CN104170208A (en) * 2012-09-28 2014-11-26 株式会社东芝 Railway power management device, railway power management method, and railway power management program

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