Abstract: A method for constructing real-time solar irradiation metering network of gigawatt-level photovoltaic power generation base comprises the following steps: Spatial and temporal distribution characteristics of irradiation quantity of the target area is analyzed based on the historical observation data of the irradiation quantity. The outline location of solar irradiation metering stations is determined by dividing the typical areas where the spatial and temporal distribution characteristics are consistent. The detailed location of solar irradiation metering stations is selected based on the center location distribution of photovoltaic power station clustering. A solar irradiation metering device is constructed on the detailed location of the solar irradiation metering station.

Abstract: A method of assessing risk of power system with high penetration of wind power includes following steps. A correlation coefficient between wind power and load is obtained, and a probability of negative peak shaving is calculated. A probability of extreme ramp rate under extreme weather conditions is obtained, wherein a probability distribution of the extreme ramp rate matches principles of HILF and LIHF. A PRNS, an ERNS, and a RI are obtained, optimal reserve demand is obtained utilizing Unit Commitment Model, and operation risk based on PRNS, ERNS, and RI is calculated. A relationship between frequency and consequence distribution of risk is obtained by calculating the operation risks during N days, dividing the operation risks into different risk levels, and calculating a frequency of each risk level, wherein the operation risks in each level have similar values.

Abstract: A method of calculating available output power of wind farm includes following steps. A space vector Vk is obtained by decomposing a power sequence of benchmarking wind turbines in a wind farm based on empirical orthogonal function. A typical power sequence of the benchmarking wind turbines is calculated by restoring the space vector Vk. A total power Ptotal of a feeder on which the benchmarking wind turbines is operated is obtained by enlarging a typical power of each benchmarking wind turbine in proportion according to the quantity of the benchmarking wind turbines operated on the feeder. An output power Pestimate of the wind farm is obtained by accumulating the total power Ptotal of all the benchmarking wind turbines.

Abstract: A method for constructing real-time solar irradiation metering network of gigawatt-level photovoltaic power generation base comprises the following steps: Spatial and temporal distribution characteristics of irradiation quantity of the target area is analyzed based on the historical observation data of the irradiation quantity. The outline location of solar irradiation metering stations is determined by dividing the typical areas where the spatial and temporal distribution characteristics are consistent. The detailed location of solar irradiation metering stations is selected based on the center location distribution of photovoltaic power station clustering. A solar irradiation metering device is constructed on the detailed location of the solar irradiation metering station.

Abstract: An approach to assess available wind resource distribution based on interpolation method includes following steps. A correlation coefficient is obtained between each two of a number of anemometer towers, and a number of first groups are formed by grouping the anemometer towers for the first time with the shortest distance clustering method. A number of second groups are obtained by grouping the plurality of anemometer towers in each of the first groups for the second time, wherein anemometer towers are grouped with absolute value of differences of mean wind velocity between each two of the anemometer towers. A number of values of wind velocity and wind direction at an target point are obtained through at least two anemometer towers in one of the second groups by the inverse distance weighting method, wherein the at least two anemometer towers are nearest to the target point.

Abstract: A method of calculating available output power of wind farm includes following steps. A space vector Vk is obtained by decomposing a power sequence of benchmarking wind turbines in a wind farm based on empirical orthogonal function. A typical power sequence of the benchmarking wind turbines is calculated by restoring the space vector Vk. A total power Ptotal of a feeder on which the benchmarking wind turbines is operated is obtained by enlarging a typical power of each benchmarking wind turbine in proportion according to the quantity of the benchmarking wind turbines operated on the feeder. An output power Pestimate of the wind farm is obtained by accumulating the total power Ptotal of all the benchmarking wind turbines.