The present invention provides an improved catenary wire system for an overhead line equipment (OLE) installation. Known OLE installations are prone to sagging and hence require a large number of support structures, which are expensive to install and maintain. These structures also appear “cluttered” and ungainly. The catenary wire system of the present invention comprises a fibre reinforced composite catenary wire configured to suspend a contact wire; and at least one elongate electrically conductive element arranged generally parallel with the catenary wire. It has been found that the catenary wire system of the present invention is able to withstand increased tensions when compared to known OLE installations, which reduces the amount of catenary wire sag, and can thereby reduce the number of support structures required by an OLE installation.

This disclosure discloses a braking-recovery system and method for a train, and a train. The system includes: a traction network, a train, and an energy storage power station. The energy storage power station is connected to the traction network, the energy storage power station includes a second controller, and the second controller controls the energy storage power station according to the voltage of the traction network to perform charging or discharging. The train includes: an electric brake; a battery; a distributor, connected to the electric brake, where there is a node between the distributor and the electric brake; a bidirectional DC/DC converter, where one end of the bidirectional DC/DC converter is connected to the battery, and another end of the bidirectional DC/DC converter is connected to the node; and a first controller, used to control, when the train is braked, the distributor and the bidirectional DC/DC converter to feed back braking electric energy of the train to the traction network, and control the bidirectional DC/DC converter according to a voltage of the traction network to absorb the braking electric energy of the train by using the battery.

This disclosure discloses a braking-recovery system and method for a train, and a train. The system includes: a traction network, a train, and an energy storage power station. The energy storage power station is connected to the traction network, the energy storage power station includes a second controller, and the second controller controls the energy storage power station according to the voltage of the traction network to perform charging or discharging. The train includes: an electric brake; a battery; a distributor, connected to the electric brake, where there is a node between the distributor and the electric brake; a bidirectional DC/DC converter, where one end of the bidirectional DC/DC converter is connected to the battery, and another end of the bidirectional DC/DC converter is connected to the node; and a first controller, used to control, when the train is braked, the distributor and the bidirectional DC/DC converter to feed back braking electric energy of the train to the traction network, and control the bidirectional DC/DC converter according to a voltage of the traction network to absorb the braking electric energy of the train by using the battery.

The present disclosure relates to a trolley wire detection device and a trolley wire detection system . The trolley wire is disposed on a guide rail and is disposed along an extending direction of the guide rail; the trolley wire detection device includes a current collector assembly connected to the trolley wire; a power mechanism, slidably disposed on the guide rail; and an engagement assembly disposed between the current collector assembly and the power mechanism, the engagement assembly being configured to provide a preset engagement force to connect the current collector assembly and the power mechanism; wherein the power mechanism is configured to drive the current collector assembly to move along the trolley wire through the engagement assembly, and the current collector assembly is configured to be disengaged from the power mechanism when a resistance generated by the trolley wire is greater than the preset engagement force.

The present disclosure relates to a trolley wire detection device and a trolley wire detection system . The trolley wire is disposed on a guide rail and is disposed along an extending direction of the guide rail; the trolley wire detection device includes a current collector assembly connected to the trolley wire; a power mechanism, slidably disposed on the guide rail; and an engagement assembly disposed between the current collector assembly and the power mechanism, the engagement assembly being configured to provide a preset engagement force to connect the current collector assembly and the power mechanism; wherein the power mechanism is configured to drive the current collector assembly to move along the trolley wire through the engagement assembly, and the current collector assembly is configured to be disengaged from the power mechanism when a resistance generated by the trolley wire is greater than the preset engagement force.

Effectively control the temperature of a control unit of a railway equipment inspecting and measuring apparatus, and install the control unit of the railway equipment inspecting and measuring on the roof of the passenger car. The first space is formed between the control unit and the heat insulating case. The second space is formed between the heat insulating case and the cover. In the first space, heat is conducted between the air in the first space and the heat exchange element by the first heat conducting member, and the first fan causes circulation of the air in the first space. In the second space, heat is conducted between the air in the second space and the heat exchange element by the second heat conducting member, and the air inside the second space is diffused by blowing the air from a suction port into the second space with the second fan.

Effectively control the temperature of a control unit of a railway equipment inspecting and measuring apparatus, and install the control unit of the railway equipment inspecting and measuring on the roof of the passenger car. The first space is formed between the control unit and the heat insulating case. The second space is formed between the heat insulating case and the cover. In the first space, heat is conducted between the air in the first space and the heat exchange element by the first heat conducting member, and the first fan causes circulation of the air in the first space. In the second space, heat is conducted between the air in the second space and the heat exchange element by the second heat conducting member, and the air inside the second space is diffused by blowing the air from a suction port into the second space with the second fan.

A Power transmission system for transmission of electrical energy comprising a battery unit and a form of transportation to transport said battery unit wherein the transportation is comprised of a plurality of train cars carrying said battery unit and at least one rail track system to which the railcars travel on and further where the railcars are comprised of plurality of battery modules which are comprised of plurality of battery packs which are comprised of plurality of battery cells and a battery pack management system.

A Power transmission system for transmission of electrical energy comprising a battery unit and a form of transportation to transport said battery unit wherein the transportation is comprised of a plurality of train cars carrying said battery unit and at least one rail track system to which the railcars travel on and further where the railcars are comprised of plurality of battery modules which are comprised of plurality of battery packs which are comprised of plurality of battery cells and a battery pack management system.

An electric drive dump truck travels by contacting, with trolley lines, power collection units configured to be moved up and down by lifting devices and receiving electrical power from the trolley lines. A position detection device is configured to detect a position of the electric drive dump truck; a vehicle speed detection device is configured to detect a vehicle speed of the electric drive dump truck; and a storage section is configured to store a position of the trolley lines and a time (hereinafter referred to as a moving-up time) until the power collection units contact with the trolley lines since the power collection units start moving up. A control device is configured to output a signal indicating that the power collection units can be moved up based on the position and vehicle speed of the electric drive dump truck, the position of the trolley lines, and the moving-up time.