Table 3 Membership parameters of PV output and load in day-ahead and intraday stages.

From: Multi-time scaling optimization for electric station considering uncertainties of renewable energy and EVs

Stage

Fuzzy variables

Membership parameters

\({\varphi _1}\)

\({\varphi _2}\)

\({\varphi _3}\)

\({\varphi _4}\)

DA

PV generation (n = 1)

0.7

0.9

1.1

1.3

Charging (n = 2)

0.9

0.95

1.05

1.1

Swapping (n = 3)

0.9

0.95

1.05

1.1

Hydrogen refueling (n = 4)

0.9

0.95

1.05

1.1

Intraday

PV generation (n = 1)

0.7

1.0

1.0

1.3

Charging (n = 2)

0.9

1.0

1.0

1.1

Swapping (n = 3)

0.9

1.0

1.0

1.1

Hydrogen refueling (n = 4)

0.9

1.0

1.0

1.1