Abstract: Provided are a method and system for managing power grid stability utilising local dynamic load control, the method being performed by a virtual load manager (VLM) comprising one or more processors configured to: configure a plurality of electrical devices connected to a mains supply grid to individually react to grid fluctuations such that the plurality of electrical devices act as one or more virtual load groups each comprising one or more electrical devices with the same response to the grid fluctuations; and manage the individual electrical devices and operating characteristics of the electrical devices in the one or more virtual load groups on behalf of a central grid controller (CGC) of the mains supply grid, wherein each of the electrical devices comprises a local controller configured to provide dynamic control of their respective load in response to fluctuations of the mains supply grid based on the configuration provided by the virtual load manager (VLM).

Abstract: Provided are a method and system for managing power grid stability utilising local dynamic load control, the method being performed by a virtual load manager (VLM) comprising one or more processors configured to: configure a plurality of electrical devices connected to a mains supply grid to individually react to grid fluctuations such that the plurality of electrical devices act as one or more virtual load groups each comprising one or more electrical devices with the same response to the grid fluctuations; and manage the individual electrical devices and operating characteristics of the electrical devices in the one or more virtual load groups on behalf of a central grid controller (CGC) of the mains supply grid, wherein each of the electrical devices comprises a local controller configured to provide dynamic control of their respective load in response to fluctuations of the mains supply grid based on the configuration provided by the virtual load manager (VLM).

Abstract: The specification discloses a method of making a male, screw-forming member, i.e., a member which forms a screw thread in a plain hole without cutting. The shank of the member is threaded and has three portions, a first portion of constant, circular cross section, a generally conical second portion of lobular cross section at the free end of the shank and a third portion of lobular cross section interposed between the first and second portions. The arrangement of the portions is such that the third portion forms a thread, in a plain hole of appropriate diameter, of greater effective diameter than the effective diameter of the thread on said first portion. The member is made by first threading the shank and then deforming the second and third portions to lobular cross-section.