TB 10009-2016

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Related Standard	Status	PDF
TB 10009-2016	English	685	Add to Cart	0--9 seconds. Auto-delivery	Code for Design of Railway Traction Power Supply	TB 10009-2016	Valid	TB 10009-2016

TB 10009-2016
Code for Design of Railway Traction Power Supply
Issued on June 9,2017
Issued by National Railway Administration of the People’s Republic of China
1 General Provisions
1. 0.1 This Code is formulated with a view to standardizing the technical requirements for the design
of traction power supply system.
1. 0. 2 This Code is applicable to the design of single- phase power frequency traction power supply
system with the nominal voltage of overhead contact line being 25 kV for the railway with standard
gauge.
1. 0. 3 The design term for the traction power supply system of railway includes short term and long
term. The short term refers to the 10出year after delivery and the long term refers to 20 th year after delivery.
1 . 0. 4 Traction power supply system shall be of Level I load. There shall be two power supply
sources in traction substation, of which when power supply.
1. 0. 5 Traction power supply system shall provide reliable power for the electric locomotive. When
there is no power source in local area, it can also provide power to other consumptions of railway
local consumers when technically and economically reasonable.
1. 0. 6 The selected equipment in design shall meet the requirements of electric traction. When
used relevant national and professional provisions shall be followed.
1. 0. 7 Reasonable design scheme shall be adopted and material and equipment shall be reasonably
selected for the traction power supply system in subfrigid zone and frigid zone.
1. 0. 8 The provisions in current national laws and regulations on the environmental protection and
energy efficiency shall be implemented when doing the design of traction power supply system.
1. 0. 9 All kinds of buildings and structures for the traction power supply system shall meet the
requirements for structure gauge within electric traction section.
1. 0. 1 0 Besides this Code，the design of electric traction power supply system and its buildings and structures shall also comply with the regulations specified in the relevant current national standards.
3 Traction Power Supply
3.1 General Requirements
3.1. 1 For the design of traction power supply system, the proposal for the incoming power supply
shall be discussed and determined with public power administrative authority. System voltage loss shall also be evaluated.
3.1. 2 In terminals, the power supplies for different traction substations should not be introduced
from the same busbar of the substation of the public power grid.
3.1. 3 For the scheme of the locations of traction power supply facilities, the rationality and the
power supply need of both short term and long term shall be taken into consideration. The traction
whole combining the plan of the power supply system shall be planned and designed
electrification of railway network and the plan of the terminals.
3.1. 4 Power supply system of urban transportation, when as part of the electrification system of
railway terminal, reliable measures jointing different feeding systems shall be taken.
3.1. 5 The power supply for the mainline of the electrified railway shall be separated from those for
the brand and special lines connected with it.
3.1. 6 The nominal voltage of the busbar at the traction side of traction substation is 27. 5 kV while
for the AT (Auto transformer) power supply mode.
3.2 Traction Power Supply System
3. 2.1 The distribution of traction substations shall be determined by the result of traction power
supply calculation, and the following factors also need to be comprehensively taken into consideration ：
1 The locations of substations shall be selected as per the requirement of traction power supply
of long term.
2 The locations of substations shall be close to the load centers，and the terminals shall have the
priority as the locations of substation.
3 It shall meet the requirement for the minimum voltage level of overhead contact line system.
4 When determining the power supply scope of traction substation, the management scope of
operation management organization and the convenience of the maintenance shall also be taken into the consideration.
5 Feeding to adjacent line or branch line shall be convenient.
6 The work quantity of power supply from the public grid shall be as little as possible.
7 The requirements of reliability and flexibility of power supply system shall be met.
8 Backup support of power supply for adjacent substations shall be taken into consideration.
9 The relevant requirements in clause 4. 1. 1 of this code shall be met.
3. 2. 2 The voltage level of incoming power source of traction substation shall be 110 kV or above.
3. 2. 3 The power supply mode shall be determined according to the following provisions：
1 Traction power supply system modes including direct feeding, direct feeding with return wire
auto-transformer feeding can be selected by comparing the technical and economical such factors as
of railway power supply system and public power grid etc.
2 Different feeding mode according to the actual conditions.
3 The mode of direct feeding or direct feeding with return wire should be adopted for the power
supply system for terminals. If the power supply mode for the mainline or branch line connected into the terminal is different from that for terminal, the demarcation should be arranged at the connection point between the terminal and mainline or branch line.
3. 2. 4 The following provisions shall be followed for the design of traction network：
1 The power supply of OCS shall be from the single feeding section and shall be of the
Same phase.
2 For double-track railway, overhead contact line system of up and down track can be connected
in parallel at the ends. Sectioning posts shall be set between two adjacent substations.
3 For the feeding section which supplies power for the OCS of up track and down track in
parallel, the current returning wire or protective wire shall be connected in parallel.
3. 2. 5 Liason disconnector ，which shall be integrated in the SCADA system, shall be installed at
phase break between two adjacent traction substations in order that over-section feeding can be realized if necessary.
3. 2. 6 Switching post can be arranged when power supply in section or in zone is necessary. And shall comply with the following provisions：
1 With auto-transformer feeding mode, switching post may be set at the middle of the feeding
section when its length is relatively long.
2 Switching post may be set at the place where there is no substation but
feeders are needed. There should be at least 2 incoming feeders for the switching post.
3 When there are more than two mainlines entering into the feeding scope of switching post.
4 Priority shall be given to independent feeder for the power source incoming wire of switching
post.
3. 2. 7 When independent feeders arranged for the overhead contact line system or switching
group feeding is adopted, shall comply with the following provisions：
1 Independent feeders shall be arranged for overhead contact line system of both upward and
downward track within double-track section and in locomotive depot. If possible, independent feeders be arranged in turn-back depot.
2 On the railway where there is traction substation or feeding switching post，independent
feeders shall be arranged for the stations in which there section or more than 6 tracks within single track section.
3 Independent feeders shall be set for each sub-yard in the marshalling station of large-scale
terminal: switching group feeding shall be locally implemented in each sub- yard；and the switching group feeding principle shall be in accordance with the organization of train operation and the requirement of inspection and maintenance.
4 At large passenger stations, independent feeder shall be arranged and switching group feeding
shall be implemented. The switching group feeding can be carried out in accordance with the incoming route of trains from different directions as required by passenger transportation or the platforms. When there is traction substation or switching post at passenger station, separate feeder shall be provided for each feeding group.
5 Independent power supply system shall be designed for special line and branch line.
3, 2. 8 The division of power supply section and the control shall comply with the following provisions：
1 The reliability, flexibility and independency of power supply shall be ensured for the convenience to when there is fault and to have quick repair and restoration of the power minimize the affected
supply.
2 When AT power supply mode is adopted, single pole motorized disconnector shall be provided
between traction substation and negative feeder and for the feeder between substation and OCS. The to the AT transformer post shall be provided with the insulated overlap and motorized
disconnector that shall be included into the SCADA system.
3 The outage section for V maintenance window shall be determined according to the
requirement of the organization of train operation, the conditions of railway line facilities and power supply equipment, etc.
3. 2. 9 The unbalance effect of single- phase traction load on the three phases of power system shall
satisfy the stipulations of relevant standards. If necessary, improvement
electric power supply system and traction power supply system. The following
for traction power supply system：
1 The phase sequence at the primary side of the traction transformer in adjacent traction
substation is shifted. The sectioning and the phase sequence of overhead contact line
properly.
2 Three- phase-two- phase balanced transformer is equipped for traction substation.
3. 2. 10 The influence of harmonic on electric power system caused by traction load shall be
forecasted and calculated in terms of the stipulations of related standards.
3. 3 Traction Transformer and Conductor
3. 3. 1 The capacity of traction transformer shall be calculated based the required carrying
capacity, the type of locomotive or MUs, the train traction mass, and the headway, etc. in the 5th year short term after putting into operation；the provisions shall be made according to the requirements of long term.
1 When the required passing capacity is less than 50 % of the passing capacity of the railway
line, the traction transformer capacity shall be calculated based on 1. 5 2 times of the required passing capacity. In this situation, it is not necessary to consider the fluctuation and margin coefficient.
2 The traction energy consumption shall be calculated for the of small ratios of passenger train and empty train, the calculation traction energy consumption of freight train under full load.
3 When determining the capacity of the traction transformers in the traction substation in
terminal ，5 % 〜10 % redundancy may be taken into consideration.
4 The overload capacity of traction transformer shall be fully utilized.