Abstract: The present invention aims to provide a technique for improving a non-defective product rate. One of typical reflectarrays of the present invention is a reflectarray including at least a layer of element patterns, a dielectric layer, and a ground layer laminated in this order, wherein the reflectarray includes at least one reflection control areal; the reflection control area includes at least two unit cells; one element pattern is arranged on each unit cell; the element pattern includes a cross-patch in which two rectangular patches are orthogonal to each other in an xy plane; and in the reflection control area, a first element width wx which is a width of the element pattern in an x axis direction or/and a second element width wy which is a width of the element pattern in a y axis direction is/are different between the element patterns arranged in the respective at least two unit cells.

Abstract: The present invention has been made to provide a thinner and lighter reflect array One of representative reflect arrays according to the present invention includes: a ground layer; a dielectric layer; and an element pattern layer having a plurality of element patterns, wherein a thickness t (mm), which is a thickness of the dielectric layer and an element length l (mm), which is a length of each of the plurality of element patterns, satisfy the following relational formula. The ground layer has a surface resistance of 100?/? or less. At least one of the ground layer and the element pattern layer is made of Cu or Al.

Abstract: A power system operation plan creation assistance device and method capable of maintaining or improving system stability or economy includes an optimization target snapshot power flow determination unit that uses one or more pieces of foundational information to determine an optimization target snapshot power flow. The foundational information includes a power generation plan, a total demand prediction, a sales plan, a renewable energy prediction, a work stoppage plan, system data, and a setting value. A system manipulation variable candidate extraction unit uses the one or more pieces of foundational information and the optimization target snapshot power flow to extract a candidate for a variable for a variable manipulating the system. An optimal system configuration calculation unit uses the one or more pieces of foundational information and the system manipulation variable candidate to calculate an optimal system configuration.

Abstract: An electric power system management device generates a plan for connection of a renewable energy power supply indicating an electric power system equipment plan satisfying a predetermined constraint. A renewable energy power generation potential amount calculation unit divides a plan target region into mesh areas and analyzes region feature information related to each mesh area to calculate an electric power amount that is to be generated in each mesh area. A renewable energy power generation potential amount bus integration unit calculates a power generation potential amount of a bus when the renewable energy power supply is connected to the bus satisfying a predetermined distance standard for each mesh area, and system renewable energy power generation possible amount information indicating a generation possible amount of the system plan and an emission amount is generated by performing an optimization calculation to maximize the renewable energy power generation amount for the system plan.

Abstract: A power system operation plan creation assistance device and method capable of maintaining or improving system stability or economy includes an optimization target snapshot power flow determination unit that uses one or more pieces of foundational information to determine an optimization target snapshot power flow. The foundational information includes a power generation plan, a total demand prediction, a sales plan, a renewable energy prediction, a work stoppage plan, system data, and a setting value. A system manipulation variable candidate extraction unit uses the one or more pieces of foundational information and the optimization target snapshot power flow to extract a candidate for a variable for a variable manipulating the system. An optimal system configuration calculation unit uses the one or more pieces of foundational information and the system manipulation variable candidate to calculate an optimal system configuration.