CN116278995A - Catenary power supply system for expressway electric vehicles - Google Patents

Abstract

The invention discloses a contact net type power supply system of an electric vehicle on an expressway, which comprises a contact net unit, wherein the contact net unit comprises a suspension module, a support module and a positioning module, and the suspension mode of the suspension module comprises simple suspension and chain suspension; the overhead line system comprises an overhead line system unit, a voltage regulation module, an intelligent learning module and a standby power supply module, wherein the overhead line system unit is provided with the voltage regulation module for adaptively regulating an input power supply, the voltage regulation module is also connected with the power supply module for providing power, the voltage regulation module is also connected with the intelligent learning module, the intelligent learning module is used for automatically regulating the voltage, and the intelligent learning module is also connected with the standby power supply module; through the design of the invention, the function of charging the electric vehicle can be realized on the expressway, thus greatly reducing the running cost of vehicles such as passenger and goods, reducing the consumption of oil and gas energy, further improving the environment-friendly requirement and making up the blank that the power supply cannot be realized on the expressway.

Description

Catenary power supply system for expressway electric vehicles

technical field

The invention belongs to the technical field of electric vehicle power supply, and in particular relates to a catenary-type power supply system for expressway electric vehicles.

Background technique

In order to achieve green environmental protection, save oil and gas resources and make full use of electric energy, first of all, there is railway electrification, and secondly, the electrification of transportation and road transportation must be carried out. Road electrification is energy-saving, money-saving and more environmentally friendly. However, in the existing technology, and There is no power supply system that can be applied on highways. In order to make up for this technical gap, the present invention provides a catenary-type power supply system for expressway electric vehicles.

Contents of the invention

The purpose of the present invention is to provide a catenary-type power supply system for electric vehicles on highways, so as to solve the problem that the existing highways do not have the function of charging electric vehicles proposed in the above background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a catenary power supply system for expressway electric vehicles, comprising a catenary unit, the catenary unit includes a suspension module, a support module and a positioning module, the suspension mode of the suspension module includes Simple suspension and chain suspension; the catenary unit is provided with a voltage adjustment module for adaptively adjusting the input power supply, and the voltage adjustment module is also connected with a power supply module that provides power. The module is also connected with an intelligent learning module, which is used to automatically adjust the voltage. The intelligent learning module is also connected with a backup power supply module. The priority of the backup power supply module is lower than that of the power supply module. When an abnormal situation occurs, the power supply can be realized through the standby power supply module, and the voltage can be adjusted through the intelligent learning module. The catenary unit is also connected with a detection unit for instantaneous detection of the broken position of the contact wire.

As a preferred technical solution in the present invention, the suspension module includes a contact wire, a suspension catenary and connecting parts, the suspension module is erected on a pillar, and the suspension catenary is used to support the contact wire.

As a preferred technical solution in the present invention, the support module includes a wrist arm, a horizontal post, a suspension insulator string, and a rod insulator.

As a preferred technical solution in the present invention, the positioning module includes a positioning tube and a positioner, and the contact wire is installed on the positioner.

As a preferred technical solution in the present invention, the power supply mode of the power supply module includes unilateral, bilateral, multilateral power supply and cross-regional power supply; wherein the unilateral and bilateral power supply are normal power supply.

As a preferred technical solution in the present invention, the intelligent learning module includes a data collection module for collecting weather, festivals, vehicle types, road maintenance, and preferential policy information, and also includes a data collection module for analyzing the information collected by the data collection module. An analysis module, the analysis module transmits the analysis result to the intelligent learning module.

As a preferred technical solution in the present invention, the detection unit includes a micro-optical fiber, and the micro-optical fiber is attached to the contact wire.

As a preferred technical solution in the present invention, the length of the micro-optical fiber is equal to the length of the contact wire, and the two are in a seamless fit, or the micro-optical fiber is wound and arranged on the contact wire.

Compared with prior art, the beneficial effect of the present invention is:

Through the design of the present invention, the function of charging electric vehicles can be realized on the expressway, which not only greatly reduces the operating costs of passenger and cargo vehicles, but also reduces the consumption of oil and gas energy, and further improves the demand for environmental protection. It makes up the gap that the existing power supply cannot be realized on the expressway.

Description of drawings

Fig. 1 is a system diagram of the present invention;

Fig. 2 is a structural schematic diagram of the present invention.

In the figure: 1. Pillar; 2. Wrist arm; 3. Horizontal rod; 4. Suspension insulator string; , Locator; 10, miniature optical fiber.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1 and Fig. 2, the present invention provides a kind of technical solution: a catenary type power supply system for expressway electric vehicles, comprising a catenary unit, the catenary unit includes a suspension module, a support module and a positioning module, the suspension module The current suspension methods include simple suspension and chain suspension, wherein the simple suspension is a suspension method in which a contact wire 6 is directly fixed on the device. A tension compensation device is installed to adjust the change of slack, and an 8-16m long elastic sling is installed on the suspension point to suspend the contact line through the elastic sling, which reduces the change point at the suspension point and improves the flow taking condition In addition, the span is properly reduced and the tension of the contact line is increased to improve the influence of sag on the current intake; while the contact line 6 of the chain suspension is suspended on the catenary cable through the hanging string, and the catenary cable is suspended on the support of the pillar On the device, the suspension point is increased without adding pillars to the contact line 6, and the distance of the contact line 6 to the road surface in the entire span is consistent by adjusting the length of the suspension string, and the chain suspension reduces the distance of the contact line 6 in the span. The slack improves the elasticity, increases the suspension weight, and improves the stability, which can meet the high-speed flow requirements of electric vehicles. The chain suspension can be divided into single chain type, double chain type and multi-chain type; chain suspension ratio Simple suspension achieves better performance, but it also brings many problems such as complex structure, high cost, and heavy construction and maintenance tasks. In the application of expressways, the double-chain suspension method is generally used; There is a voltage debugging module for adaptive adjustment of the input power supply. The power frequency single-phase AC system is 25kv50hz, and the actual voltage is 27.5kv due to resistance factors. The voltage regulation module is also connected to a power supply module that provides power. There is also an intelligent learning module connected to it. The intelligent learning module is used to automatically adjust the voltage. The intelligent learning module is also connected to a backup power supply module. The priority of the backup power supply module is lower than that of the power supply module. The backup power supply module realizes the power supply, and the voltage is adjusted through the intelligent learning module. The catenary unit is also connected with a detection unit for instantaneous detection of the breakage position of the catenary wire 6. Among them, the following requirements are put forward for the catenary:

(1) To ensure the normal flow of electric vehicles under high-speed operation and harsh weather conditions, the catenary is required to have stability and sufficient elasticity in terms of mechanical structure;

(2) Catenary equipment and parts should be interchangeable, have sufficient milk grinding and corrosion resistance, and prolong the service life of the equipment as much as possible;

(3) All catenaries are well insulated from the ground, safe and reliable;

(4) The equipment structure is as simple as possible, which is convenient for construction and conducive to operation and maintenance. In the event of an accident, it is convenient for emergency repair and rapid restoration of power transmission;

(5) It is possible to reduce costs in the near future, especially pay attention to saving precious metals and steel products.

In this embodiment, the suspension module includes a contact wire 6 that is connected to the electric car and realizes transmission of electric power, a suspension catenary 5 and connecting parts. For electric vehicles, catenary cables 5 are used to support contact wires 6 and transfer their load to pillars or other structures.

In this embodiment, the support module includes a wrist arm 2, a horizontal post 3, a suspension insulator string 4, a rod insulator 7 and other special support equipment for buildings.

In this embodiment, the positioning module includes a positioning tube 8 and a locator 9. The contact wire 6 is installed on the locator 9. Its function is to fix the position of the contact wire 6, so that the contact wire 6 can be guaranteed within the range of the pantograph sliding track. The contact wire 6 does not separate from the pantograph and transmits the horizontal load of the contact wire 6 to the pillar 1. The pillar 1 and the foundation are used to bear all the loads of the suspension module, support module and positioning module and fix the contact suspension at the specified position and In terms of height, the catenary adopts prestressed reinforced concrete pillars and steel pillars. The foundation is that the pillars are fixed on the foundation made of reinforced concrete below. The foundation bears all the loads transmitted by the pillars and ensures the stability of the pillars. The prestressed steel bars The concrete pillar is integrated with the foundation, and the lower end is directly buried in the ground.

In this embodiment, the power supply mode of the power supply module includes unilateral, bilateral, multilateral power supply and cross-regional power supply; wherein the unilateral and bilateral power supply are normal power supply.

In this embodiment, the intelligent learning module includes a data collection module that collects weather, festivals, vehicle types, road maintenance, and preferential policy information, and also includes an analysis module that analyzes the information collected by the data collection module. The results are transmitted to the intelligent learning module, so that the intelligent learning module can automatically generate intelligent regulation of the voltage. Among them, the specific investment scale, time limit, and cost accounting, taking a 10-kilometer expressway as an example:

The construction period is 1 year, with 4 to 10 lines in both directions.

The cost of newly built roads is 30 million yuan/km for high-speed rail electrification (including roads, catenary, and substations, and the cost of catenary for existing roads is 10 million yuan), maintenance is 2 million yuan/km, and the annual interest rate on behalf of the loan is 10%, 320 The total cost of 10,000 yuan is 35.2 million yuan/km, and the total cost of 10 kilometers is 352 million yuan;

With a flow rate of 100,000 vehicles/day, 0.4 yuan/vehicle/km, and a daily income of 40,000 yuan/km,

The annual (according to 300 days) income is 12 million yuan/km. The total income of 10 kilometers is 120 million yuan.

Cost period: 35200/12000 = 2.93 years,

Annual rate of return 12000/35200 = 0.34 = 34%.

The service life is 20 years; total income (20-2.93)*12000＝204840 (10,000 yuan);

For all types of passenger, cargo oil, and gas vehicles, electric drive devices are installed according to the power level, which is the electric drive transformation of passenger and truck vehicles. The battery is 40,000 yuan, and the oil/gas battery is not required; the antenna brush and the pantograph are installed on the head of the vehicle 1,000 yuan; the charging ETC is installed, and the automatic meter reader is 1 yuan/kva, of which 3kva=1 liter of oil, or 0.3 ~0.6 yuan/km toll, and the truck is weighed.

In this embodiment, the detection unit includes a micro-optical fiber 10, and the micro-optical fiber 10 is attached to the contact wire 6. When the contact wire 6 breaks, the high temperature generated will affect the micro-optical fiber 10. At this time, the position of the breakage can be quickly detected, and Make repairs.

In this embodiment, the length of the micro-optical fiber 10 is equal to the length of the contact wire 6 , and the two are in a seamless fit, or the micro-optical fiber 10 is wound and arranged on the contact wire 6 .

Although the embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that these embodiments can be modified without departing from the principles and spirit of the present invention. There are various changes, modifications, substitutions and variations, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a highway electric motor car contact net formula power supply system, includes contact net unit, its characterized in that: the overhead contact system unit comprises a hanging module, a supporting module and a positioning module, wherein the hanging mode of the hanging module comprises simple hanging and chain hanging; the overhead line system is characterized in that a voltage debugging module used for adaptively adjusting an input power supply is arranged on the overhead line system unit, a power supply module used for providing power is further connected to the voltage adjusting module, an intelligent learning module is further connected to the voltage debugging module and used for automatically adjusting voltage, a standby power supply module is further connected to the intelligent learning module, the priority of the standby power supply module is lower than that of the power supply module, power supply can be achieved through the standby power supply module when the power supply module is abnormal, the voltage is adjusted through the intelligent learning module, and a detection unit used for instantaneously detecting the breaking position of a contact line (6) is further connected to the overhead line system unit.

2. The electric vehicle catenary power supply system of claim 1, wherein: the suspension module comprises a contact line (6), a suspension rope (5) and connecting parts, the suspension module is erected on the support column (1), and the suspension rope (5) is used for supporting the contact line (6).

3. The electric vehicle catenary power supply system of claim 1, wherein: the support module comprises a wrist arm (2), a horizontal connecting rod (3), a suspension insulator string (4) and a rod insulator (7).

4. The electric vehicle catenary power supply system of claim 1, wherein: the positioning module comprises a positioning pipe (8) and a positioner (9), and the contact line (6) is arranged on the positioner (9).

5. The electric vehicle catenary power supply system of claim 1, wherein: the power supply modes of the power supply module comprise unilateral, bilateral, multilateral power supply and cross-region power supply; wherein the single-side and double-side power supply is normal power supply.

6. The electric vehicle catenary power supply system of claim 1, wherein: the intelligent learning module comprises a data acquisition module for acquiring weather, holidays, vehicle types, road maintenance and preferential policy information, and an analysis module for analyzing and blowing the information acquired by the data acquisition module, wherein the analysis module transmits an analysis result to the intelligent learning module.

7. The electric vehicle catenary power supply system of claim 1, wherein: the detection unit comprises a miniature optical fiber (10), and the miniature optical fiber (10) is attached to the contact line (6).

8. The electric vehicle catenary power supply system of claim 7, wherein: the length of the micro optical fiber (10) is equal to that of the contact line (6), and the micro optical fiber and the contact line are in a seamless joint shape, or the micro optical fiber (10) is wound on the contact line (6).

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