High Speed 2 Railway Line

Department for Transport written question – answered on 12th February 2019.

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Photo of Lord Berkeley Lord Berkeley Labour

To ask Her Majesty's Government what is the peak electric power demand for the operation of the planned number of trains per hour for HS2 phases 1, 2A and 2B meeting speeds and performance criteria that comply with the design specification.

Photo of Baroness Sugg Baroness Sugg Parliamentary Under-Secretary (Department for Transport)

The peak electric power demand for the operation of the planned number of trains per hour for HS2 phases 1, 2A and 2B is shown in the table below.

Feeder Station

Max 1 minute RMS (MVA)

Max 30 minute RMS (MVA)

Ickenham

149.1

131.8

Quainton

179.1

167.1

Burton Green

176.5

157.1

Maximum Phase 1.

504.7

456

Newlands (Phase 2A)

152.73

83.99

Hoo Green

170.85

94.71

PH2 B AFTS 1

119.49

63.3

PH2 B AFTS 2

137.83

69.92

PH2 B AFTS 3

127.26

60.72

PH2 B AFTS 4

122.27

54.99

Maximum demand on Phase 2B.

677.63

343.64

The figures above represent the calculated demand based on a timetable that represents the train service pattern post opening of Phase 2B. The calculation is based on peak service provision during the period 07:00 to 11:00 which is the most power demanding period, ensuring that the traction power system is sized appropriately.

Demand is presented as the total 1 minute and 30 minute values at the primary side of the grid supply transformers.

It should be noted that the total maximum demand for Phase 1, Phase 2a or Phase 2B does not necessarily equate to the sum of the maximum demand for each of the feeder stations in the ‘Phase’ as the maximum demand at each feeder station doesn’t occur at the same time.

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