A method for determining a power outage probability of an electrical power grid for a time period, the method comprising the following steps carried by a processor of a data processing unit: dividing the time period into several time intervals, determining a power generation capacity of a power generation facility and an energy storage unit size for an energy storage unit for said time period, determining an effective load unit demand for each time interval from a load unit demand of a load unit for each time interval, and computing the power outage probability using a grid parameter that comprises the power generation capacity, the energy storage unit size and the effective load unit demand, wherein the grid parameter is optimized for its maximum value with respect to all time intervals of the time period
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method for determining a power outage probability of an electrical power grid, in particular a smart grid, wherein a power generation facility and an energy storage unit are used to distribute power to at least one load unit, for a time period comprising several time intervals, the method comprising the following steps carried by a processor of a data processing unit: determining an effective load unit demand for each time interval from a load unit demand of the load unit for each time interval, respectively, wherein the load unit demand for each time interval is read-out from a database or obtained by reading out a power meter and the effective load unit takes a value located between a peak demand and an average demand of the load unit, and computing the power outage probability using a grid parameter that depends on a power generation capacity of the power generation facility, an energy storage unit size for the energy storage unit for said time period and the effective load unit demand, wherein the grid parameter is optimized for its maximum value with respect to all time intervals of the time period. 2. The method according to claim 1, wherein the load unit demand comprises several load unit demand distributions for each time interval, determining the effective load unit demand comprises determining an effective load unit demand distribution for each time interval from each load unit demand distribution, respectively, wherein the load unit demand distributions for each time interval are read-out from the database, and a multiplex parameter is determined that aggregates the several load unit demand distributions, wherein the grid parameter comprises the multiplex parameter and is further optimized for its minimum value with respect to the multiplex parameter by the processor of the data processing unit, 3. The method according to claim 2, wherein the load unit demand distributions are stochastic distributions, 4. The method according to claim 2, wherein the bad unit demand distributions are provided as predetermined power usage profiles. 5. The method according to claim 4, wherein the power usage profiles are related to a daily, weekly, monthly or yearly power usage. 6. The method according to claim 2, wherein the load unit demand distributions are provided as measurement values that are measured in real-time and provided to the database by a meter. 7. The method according to claim 6, wherein the measurement values are measured at each load unit or at an energy storage unit. 8. A method for an adaptation of a power generation capacity of an electrical power grid, in particular a smart grid, the method comprising the following steps: a) determining the power generation capacity, an energy storage unit size and a load unit demand, wherein the power generation capacity and/or the energy unit size and/or the load unit demand are read-out from a database or obtained by reading out a power meter, b) computing a power outage probability depending on the power generation capacity, the energy storage unit size and the load unit demand according to the method according to claim 1 by a processor of a data processing unit, c) comparing the power outage probability with a target reliability threshold, d) adjusting the power generation capacity if the power outage probability is smaller than the target reliability threshold, e) computing a new power outage probability depending on the adjusted power generation capacity, the energy storage unit size and the load unit demand according to the method according to claim 1 by the processor of the data processing unit, f) comparing the new power outage probability with the target reliability threshold, and g) repeating the steps d) to f) until the new power outage probability is equal or larger than the target reliability threshold. 9. A method for determining an energy storage unit size for an electrical power grid, in particular a smart grid, comprising a power generation facility and a load unit, the method comprising the steps: a) determining a power generation capacity and a load unit demand, wherein the load unit demand is determined from a predetermined power usage profile that is read-out from a database, b) computing a power outage probability depending on the power generation capacity, the energy storage unit size and the load unit demand according to the method according to claim 1 by a processor of a data processing unit, c) comparing the power outage probability with a target reliability threshold, d) adjusting the energy storage unit size if the power outage probability is smaller than the target reliability threshold, e) computing a new power outage probability depending on the adjusted energy storage unit size, the power generation capacity, and the load unit demand according to the method according to claim 1 by the processor of the data processing unit, f) comparing the new power outage probability with the target reliability threshold, and g) repeating the steps d) to f) until the new power outage probability is equal or larger than the target reliability threshold. 10. A data processing unit for determining a power outage probability of an electrical power grid, in particular a smart grid, wherein a power generation facility and an energy storage unit are used to distribute power to at least one load unit, for a time period comprising several time intervals, the data processing unit comprising a processor for: determining an effective load unit demand for each time interval from a load unit demand of the load unit for each time interval, respectively, wherein the load unit demand for each time interval is read-out from a database or obtained by reading out a power meter and the effective load unit takes a value located between a peak demand and an average demand of the load unit, and computing the power outage probability using a grid parameter that depends on a power generation capacity of the power generation facility, an energy storage unit size for the energy storage unit for said time period and the effective load unit demand, wherein the grid parameter is optimized for its maximum value with respect to all time intervals of the time period. 11. The data processing unit according to claim 10, wherein the power generation capacity comprises a stochastic power generation distribution. 12. The data processing unit according to claim 10, wherein the power generation capacity comprises several individual power generation capacities. 13. The data processing unit according to claim 10, wherein the power generation capacity refers to at least one power generation plant of the following group: nuclear power plant, coal power plant, oil power plant, gas power plant, solar power plant, hydro power plant and wind power plant. 14. The data processing unit according to claim 10, wherein the energy storage unit size comprises several individual energy storage unit sizes.