CN112865272A - Power generation system and power generation method for multi-source railway wagon - Google Patents
Power generation system and power generation method for multi-source railway wagon Download PDFInfo
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- CN112865272A CN112865272A CN201911181776.7A CN201911181776A CN112865272A CN 112865272 A CN112865272 A CN 112865272A CN 201911181776 A CN201911181776 A CN 201911181776A CN 112865272 A CN112865272 A CN 112865272A
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- 238000010248 power generation Methods 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 230000003137 locomotive effect Effects 0.000 claims description 17
- 238000004146 energy storage Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005286 illumination Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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Abstract
The invention discloses a power generation system and a power generation method for a multi-source railway wagon, wherein the power generation system comprises a first power generation device which is a shaft end power generator arranged at the end part of a shaft, and the power generation system also comprises: more than one auxiliary power generation device which is arranged on the vehicle body and is used for generating electric power; and the power supply conversion and management device is used for converting and managing the power generated by the first power generation device and the auxiliary power generation device and completing power supply output to the application object. The power generation method is based on the power generation system. The invention has the advantages of simple structure, easy realization, continuous and stable output, multi-mode compatibility, and the like.
Description
Technical Field
The invention mainly relates to the technical field of rail transit, in particular to a power generation system and a power generation method for a multi-source railway wagon vehicle.
Background
To solve the problem of power consumption in railway vehicles (here, trailers without power units), early passenger cars employed shaft-driven dc generators, namely: the generator is hung on a vehicle underframe or a bogie frame, and an axle rotates to drive the generator to generate electricity through a belt pulley when the train runs. However, due to the structural difference between the trucks of the passenger car and the truck, the generator cannot be installed and used on the truck. A bogie for a passenger car generally includes: the wheel set axle box, the swing bolster spring, the framework and the braking device are suspended by adopting two systems of springs, so that the wheel set axle box has perfect vibration damping performance and high riding comfort; the bogie for freight vehicle has simple structure, only one series of springs are used for suspension, and a three-piece structure is adopted, i.e. a swing bolster and two side frames form a framework, and the framework falls on a wheel pair without an axle box. The maintenance is convenient, and the cost is low, possesses very strong bearing capacity.
Along with the development of railways, the intelligent requirements on the operation, management and maintenance of vehicles are higher and higher, the functions of shaft temperature monitoring, train pipe pressure monitoring, vehicle positioning and the like are scheduled, and the truck vehicles cannot be additionally provided with electrical equipment due to lack of power supply, so that the requirements are difficult to meet.
At present, certain functions (such as train pipe pressure detection) are realized by generally adopting portable equipment powered by a battery, the cost is high, the application is inconvenient, and the popularization is difficult. Therefore, only adding a continuous, stable power supply to the vehicle is the final solution. In consideration of the characteristics of free-form and free-form editing of railway wagons in China, the large difference of different regional environments and the lack of maintenance conditions, the schemes of locomotive centralized power supply, contact network power supply, generator car power generation and the like used in the current passenger car are difficult to apply. The feasible scheme is that self-powered technologies such as shaft end power generation, wind power generation and photovoltaic power generation are adopted to provide independent power supplies for each boxcar. However, these solutions still have some disadvantages: the shaft end power generation can be realized only when the vehicle runs, and the wind power generation and the photovoltaic power generation are limited by the environment and are unstable. Therefore, a single technical scheme cannot realize continuous and stable power supply output, and several schemes are combined to supplement each other.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the multi-mode compatible power generation system and the power generation method for the multi-source system railway freight car, which have the advantages of simple structure, easiness in realization and capability of continuously and stably outputting, and can solve the problem of power utilization of railway freight car equipment.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a multisource system is power generation system for rail wagon vehicle, includes first power generation facility, for installing in the axle head generator of axletree tip, it still includes:
more than one auxiliary power generation device which is arranged on the vehicle body and is used for generating electric power;
and the power supply conversion and management device is used for converting and managing the power generated by the first power generation device and the auxiliary power generation device and completing power supply output to the application object.
As a further improvement of the system of the invention: the auxiliary power generation device comprises a second power generation device, the second power generation device adopts a wind driven generator, is arranged at the bottom of the vehicle body and/or two ends of the vehicle and is driven by wind power to generate electric power.
As a further improvement of the system of the invention: the auxiliary power generation device comprises a third power generation device, the third power generation device adopts a photovoltaic power generation structure, is arranged at the top and/or two ends of the vehicle, and generates power by illumination in the environment.
As a further improvement of the system of the invention: the auxiliary power generation device is a vibration power generation device used for collecting vibration energy generated when the locomotive runs, and power generation is carried out by collecting vibration generated when the locomotive runs.
As a further improvement of the system of the invention: the auxiliary power generation device is a braking energy conversion power generation device used for collecting braking energy when the locomotive runs, and power generation is carried out by collecting energy in the running and braking state of the locomotive.
As a further improvement of the system of the invention: the energy storage device is used as energy storage equipment of the system and is charged by the power supply conversion and management device, auxiliary power supply is provided when the power generation power of the system is insufficient, and power supply of a load is maintained when the power supply conversion and management device stops working.
As a further improvement of the system of the invention: the power supply conversion and management device comprises a rectifying unit, a voltage regulating unit and an output control unit, wherein: the rectifying unit is used for carrying out three-phase uncontrolled rectification on the input alternating current to convert the alternating current into direct current; the voltage regulating unit is used for regulating the variable and unstable direct current into stable direct current voltage set by a program through the DC/DC conversion circuit; the output control unit is used for carrying out output regulation according to load characteristics, and realizing constant voltage and constant current output and various output fault protection.
As a further improvement of the system of the invention: the power supply conversion and management device adopts a converter, the converter adopts a self-starting mode, and can be automatically started when the voltage of an input power supply reaches a certain threshold value without the assistance of an external power supply.
The invention further provides a power generation method for the multi-source railway wagon, which selects different power supply ways when the locomotive vehicle works, and comprises the following steps:
a) when the rolling stock runs, the shaft end is mainly used for generating electricity, and the auxiliary generating device is used as an auxiliary device;
b) when the rolling stock is static, the auxiliary power generation device is mainly used.
As a further improvement of the process of the invention: the auxiliary power generation device is any one or more of a wind driven generator, a photovoltaic power generation structure, a vibration power generation device and a braking energy conversion power generation device.
As a further improvement of the process of the invention: when the auxiliary power generation device is a combination of a wind driven generator and a photovoltaic power generation structure, the photovoltaic power generation is mainly adopted, and the wind driven power generation is assisted.
As a further improvement of the process of the invention: when the auxiliary power generation device is a combination of the vibration power generation device and the braking energy conversion power generation device, the braking energy conversion power generation device is used as a main device, and the vibration power generation device is used as an auxiliary device.
As a further improvement of the process of the invention: when the auxiliary power generation device is a combination of a wind driven generator, a photovoltaic power generation structure, a vibration power generation device and a braking energy conversion power generation device, the vibration power generation device and the braking energy conversion power generation device are assisted by mainly photovoltaic power generation and wind power generation.
Compared with the prior art, the invention has the advantages that:
1. the power generation system and the power generation method for the multi-source railway wagon vehicle have the advantages of simple structure, application characteristics suitable for the railway wagon vehicle, easiness in implementation and capability of continuously and stably outputting, are a power supply system compatible with multiple power generation modes, and comprise one or any multiple of a wind driven generator, a photovoltaic power generation structure, a vibration power generation device and a braking energy conversion power generation device, and a converter has the functions of self-starting and self-shutting down and does not need external intervention.
2. The power generation system and the power generation method for the multi-source railway freight car have the advantages that maintenance design is avoided, maintenance is not needed, and inspection can be synchronously carried out along with car maintenance; the whole system can ensure high-stability power output, can be directly used by a load, can be used by a plurality of sets of parallel connection, and is convenient for rapidly increasing power.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention in a specific application example.
FIG. 2 is a schematic diagram of a topology of a power generation system according to the present invention in a specific application example.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1 and 2, the power generation system for a multi-source railway wagon vehicle according to the present invention includes:
the first power generation device 1 is a shaft end power generator and is arranged at the end part of a vehicle shaft, a motor rotor of the shaft end power generator is connected with the vehicle shaft, and the power generator is directly driven to generate power by the rotation of the vehicle shaft without the conversion of an axle box and a belt pulley; the shaft end generator is most stable and reliable, is not influenced by weather environment, and can supply power as long as a vehicle runs.
More than one auxiliary power generation device which is arranged on the vehicle body and is used for generating electric power;
and a power conversion and management device for converting and managing the power generated by the first power generation device 1 and the auxiliary power generation device and outputting the power to the application object.
In a specific application example, the auxiliary power generation device comprises a second power generation device 2, and the second power generation device 2 adopts a wind power generator and is arranged at the bottom of the vehicle body and/or two ends of the vehicle and driven by wind power to generate electric power. The wind driven generator is mainly used for collecting wind power in an external environment as driving force to generate electricity, and particularly can fully utilize the traveling wind of a vehicle body in the running process.
In another specific application example, the auxiliary power generation device includes a third power generation device 3, and the third power generation device 3 is a photovoltaic power generation structure (photovoltaic cell panel assembly) and is mounted on the top and/or both ends of the vehicle to generate electric power by illumination in the environment.
As a third embodiment, the auxiliary power generator may be a vibration power generator for collecting vibration energy generated when the locomotive runs, and the vibration power generator collects vibration generated when the locomotive runs to generate power.
As a fourth embodiment, the auxiliary power generation device may be a braking energy conversion power generation device for collecting braking energy of the locomotive during operation, and the energy collected during the operation and braking of the locomotive is utilized to generate power.
As a fifth embodiment, the auxiliary power generation device may include any multiple of the second power generation device 2 using the wind power generator, the third power generation device 3 using the photovoltaic power generation structure, the vibration power generation device, and the braking energy conversion power generation device, so that the illumination, the wind power energy, and the vibration and braking energy in the locomotive running state in the environment can be fully utilized to generate power and generate electric power, thereby making up for the defects of a single auxiliary power generation device in some specific environments.
As a preferred embodiment, the present invention may further include an energy storage device, as an energy storage device of the system, which is charged by the power conversion and management device at ordinary times, and provides an auxiliary power supply when the system power generation is insufficient, and maintains the power supply of the load 6 when the power conversion and management device stops working.
In this embodiment, the power conversion and management apparatus includes a rectifying unit, a voltage regulating unit, and an output control unit, wherein: the rectification unit is used for carrying out three-phase uncontrolled rectification on the input alternating current (if the input is direct current, the direct current enters a voltage regulation link) so as to convert the alternating current into direct current; the voltage regulating unit is used for regulating the variable and unstable direct current into stable direct current voltage set by a program through the DC/DC conversion circuit; the output control unit is used for carrying out output regulation according to load characteristics, and realizing constant voltage and constant current output and various output fault protection.
In specific application, the power supply conversion and management device adopts the converter 4 according to actual needs, and the converter 4 adopts a self-starting mode, can be automatically started when the voltage of an input power supply reaches a certain threshold value, and does not need the assistance of an external power supply.
In a specific application example, the storage battery 5 is adopted as an energy storage device according to actual needs, the energy storage device is an energy storage device of a system, the energy storage device is charged by the converter 4 at ordinary times, auxiliary power supply is provided when the system power generation is insufficient, and the power supply of the load 6 is maintained when the converter 4 stops working. It is understood that the battery 5 may be a lead-acid, nickel-cadmium, nickel-hydrogen, lithium-ion, or the like type battery or a super capacitor, all of which are intended to be within the scope of the present invention.
The load 6 is various vehicle-mounted electric devices.
In a specific application example, different quantities of shaft end generators can be configured according to requirements, the conventional vehicle is generally of a four-shaft structure, and at most 8 sets of shaft end generators (one set at each of two ends of each shaft) can be mounted to realize rapid increase of generated power.
In a specific application example, each train can be configured with a set of system of the invention, and the system is self-forming and conforms to the application characteristics of flexible marshalling and random hanging of freight trains.
The invention further provides a power generation method for the multi-source railway wagon, which selects different power supply ways when the locomotive vehicle works, and comprises the following steps:
a) when the rolling stock runs, the shaft end is mainly used for generating electricity, and the auxiliary generating device is used as an auxiliary device;
b) when the rolling stock is static, the auxiliary power generation device is mainly used.
Because the system power generation is reduced when the vehicle is stationary, only equipment for basic functions (such as vehicle positioning) is powered on at the stage, and part of functions related to operation (such as axle temperature monitoring) are turned off. Meanwhile, under specific conditions (such as when the vehicle is stationary for more than a set time, or when the output power is too low and the storage battery is in short circuit), the converter can disconnect all loads.
In a specific application, the auxiliary power generation device may be any one or more of a wind power generator, a photovoltaic power generation structure, a vibration power generation device, and a braking energy conversion power generation device according to an actual application scene and requirements.
Further, when the auxiliary power generation device is a combination of a wind driven generator and a photovoltaic power generation structure, the photovoltaic power generation is mainly adopted, and the wind driven power generation is assisted.
Further, when the auxiliary power generation device is a combination of the vibration power generation device and the braking energy conversion power generation device, the braking energy conversion power generation device is used as a main device, and the vibration power generation device is used as an auxiliary device.
Further, when the auxiliary power generation device is a combination of a wind power generator, a photovoltaic power generation structure, a vibration power generation device and a braking energy conversion power generation device, the photovoltaic power generation and the wind power generation are mainly used, and the vibration power generation device and the braking energy conversion power generation device are used as auxiliaries.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (13)
1. The utility model provides a multisource system power generation system for rail wagon vehicle, includes first power generation facility, for installing in the axle head generator of axletree tip, its characterized in that still includes:
more than one auxiliary power generation device which is arranged on the vehicle body and is used for generating electric power;
and the power supply conversion and management device is used for converting and managing the power generated by the first power generation device and the auxiliary power generation device and completing power supply output to the application object.
2. The power generation system for the multi-source railway wagon according to claim 1, wherein the auxiliary power generation device comprises a second power generation device which is a wind power generator and is installed at the bottom of the wagon body and/or at both ends of the wagon and is driven by wind power to generate power.
3. The power generation system for a multi-source railway wagon of claim 1, wherein the auxiliary power generation device comprises a third power generation device, the third power generation device is of a photovoltaic power generation structure and is arranged on the top and/or two ends of the wagon, and the third power generation device generates power by illumination in the environment.
4. The power generation system for a multi-source railway wagon of claim 1, wherein the auxiliary power generation device is a vibration power generation device for collecting vibration energy generated when the locomotive runs, and the vibration power generation device is used for collecting vibration generated when the locomotive runs to generate power.
5. The power generation system of claim 1, wherein the auxiliary power generation device is a braking energy conversion power generation device for collecting braking energy generated during operation of the locomotive, and the auxiliary power generation device is configured to generate power by collecting energy generated during operation and braking of the locomotive.
6. The power generation system for a multi-source railway wagon according to any one of claims 1 to 5, further comprising an energy storage device as an energy storage device of the system, wherein the energy storage device is charged by the power conversion and management device, and the power conversion and management device provides auxiliary power when the power generated by the system is insufficient and maintains the power supplied to the load when the power conversion and management device stops working.
7. The power generation system for a multi-source railway wagon vehicle according to any one of claims 1 to 5, wherein the power conversion and management device comprises a rectifying unit, a voltage regulating unit, and an output control unit, wherein: the rectifying unit is used for carrying out three-phase uncontrolled rectification on the input alternating current to convert the alternating current into direct current; the voltage regulating unit is used for regulating the variable and unstable direct current into stable direct current voltage set by a program through the DC/DC conversion circuit; the output control unit is used for carrying out output regulation according to load characteristics, and realizing constant voltage and constant current output and various output fault protection.
8. The power generation system of claim 7, wherein the power conversion and management device is a converter, and the converter is self-starting and can be self-started when the input power voltage reaches a certain threshold without the assistance of an external power source.
9. A power generation method for a multi-source railway wagon vehicle is characterized in that different power supply paths are selected when the locomotive vehicle works, and the method comprises the following steps:
a) when the rolling stock runs, the shaft end is mainly used for generating electricity, and the auxiliary generating device is used as an auxiliary device;
b) when the rolling stock is static, the auxiliary power generation device is mainly used.
10. The method according to claim 9, wherein the auxiliary power generator is any one or more of a wind power generator, a photovoltaic power generation structure, a vibration power generation device and a braking energy conversion power generation device.
11. The method of claim 10, wherein when the auxiliary power generator is a combination of a wind power generator and a photovoltaic power generation structure, the photovoltaic power generation is mainly used and the wind power generation is auxiliary.
12. The method of claim 10, wherein when the auxiliary generator is a combination of a vibration generator and a braking energy conversion generator, the braking energy conversion generator is primary and the vibration generator is secondary.
13. The method of claim 10, wherein when the auxiliary power generator is a combination of a wind power generator, a photovoltaic power generation structure, a vibration power generator and a braking energy conversion power generator, the vibration power generator and the braking energy conversion power generator are mainly used for photovoltaic power generation and wind power generation, and the vibration power generator and the braking energy conversion power generator are auxiliary.
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