power supply type

Hanjeon substation receives 154KV and supplies the power needed for the train operation and each station through the power transforming device of urban rail substation. The power supply system is classified into substation facility, train line facility, original facility, general electricity facility, sending and receiving line facility. We try to supply power properly using the up-to-date device for each facility and excellent protection device.

GIS(Gas Insulated Switch gear)

This is gas insulated switch gear for 154KV high pressure type to put power devices such as circuit breaker, disconnecting switch, switch, and transformer etc. and bus in the steel container charged with colorless and scentless non-volatile gas(SF6) and it has the following merits.

• reduce the area of device installation a lot
• maintenance is very easy as attaching device such as insulator is omitted and damage, rust and erosion of current carrying part can be prevented.
• it secures stability and reliability as electric shock accident is prevented and there is no chance of a fire.

Power electric transformer

There are many different kinds of power electric transformer such as 154KV oil immersed transformer, rectifier power source providing 22.9KV molded transformer and high pressure power distribution 22.9 KV dry molded transformer.

Converter facility

This is the device to provide the necessary electricity to move the motor car by converting AC 22.9KV voltage into DC 1500V voltage and to change the power needs high capacity power type semiconductor, Silicon Thyristor. Rectifier facility consists of Thyristor, control panel and AC & DC filter etc.

DC facility operation panel

It is the device to provide DC voltage(1500V) output from the rectifier for train line directly. Line 1-3 consist of high speed blocking device.

maincomputer

It is the server to control and monitor the general condition of the remote control system such as operating system, real time DB, data transfer and near distance communication and composed of the double system and it also includes the transporting device to control the terminal on the field and data receiving and sending.

DLP : Digital Lighting Processing

As various symbols and lines are used for urban rail power supply system for each station, operators can get a picture of what is happening in power supply at a first glance. Thus, when there is something wrong in the power supply, they can take a prompt measure.

Operator console

It is MMI-Man Machine Interface to perform condition monitoring and control of power supply facility by an operator. It is realized by workstation level computer related software and it can also perform the DLP control.

RTU : Remote Terminal Unit

It is installed in the station electricity room and the substation. It collects the operating information such as operation condition, voltage and currents etc. of the power device on the field and processes the information and sends it to the power control center. It is also field terminal device to output the machine control orders by the control center.

station electricity facility

It is the facility to provide power to elevators, escalators, and functional rooms(ventilation, cooling, drainage, wastewater) etc. and provide electricity to various lightings, and consent etc. It is provided with 6.6KV electricity from the urban rail substation and it transforms it into 380V/220V to provide electricity to the station electricity facility. In additions, ATS(automatic transfer switch) is installed to secure the constant electricity supply to the important load from dual system circuit. As the emergency lighting is installed in the station and it is provided with electricity from non-blackout power source, therefore, they can provide the stable electricity regardless of blackout.

Line 1,2,3

The train rail line is installed at the constant height on the orbit to provide the motor car with power for operation. When it comes to line conduction of the train rail line, the ground of the main line takes Heavy Simple Catenary, the basement Compound Catenary and base depot Simple Catenary.
The Catenary method of the ground section installs a messenger wire and supports the train rail line at the regular interval of hanger or dropper, and Compound Catenary method of the basement section supports with V-Dropper between feeder messenger wire and auxiliary messenger wire and fixes the train rail line between auxiliary messenger wire and the train rail line with Compositeear.

Line 4 light rail transit

Line 4 motor car rail line is the third orbit lateral side guide type AL/SUS complex steel line. It is the facility to provide power to light rail transit car by being supplied DC 750V from the substation.