Abstract:
A switchgear includes a switching device, which is driven by a propellant chemical charge or fast acting switch. The switchgear includes a current or fault current detection unit, and an optical sensor unit for light arc or fault light arc detection, without the need of having an auxiliary voltage applied. In order to reduce the closing time of an earthing switch, the electrical circuit of an inductive current detection unit is electrically connected in series with a light sensing switching path, and a current signal directly ignites the propellant chemical charge or fast acting switch by using a limited electronic device.
Abstract:
A color changer includes a valve module with a first interaction area and a plurality of valves. The valves are connected on their respective inlet side to a respective supply duct and are connected on their respective outlet side to a common collecting duct. The valves are openable and closeable via respective switches by a first actuation end discharging into the first interaction area. The color changer includes a switching module with a second interaction area and one actuator, which discharges by a second actuation end into the second interaction area. The valve and switching modules are arranged with their respective interaction areas adjacent and are displaceable relative to one another. Due to a respective displacement movement, the second actuation end is simultaneously movable with respect to at most one of the first actuation ends into a respective actuation position so that the actuator opens or closes the corresponding valve.
Abstract:
An Industrial Automation and Control System (IACS) for an industrial process including several neighbouring zones connected via a boundary element. The IACS includes a number of communicatively interconnected Intelligent Electronic Devices (IEDs), wherein low-level IEDs interact with primary devices, and wherein high-level IEDs implement high-level zone functions. The IACS includes a logical communication link between the two high-level IEDs for bypassing the connecting IED in case of communicative unavailability. The communication link enables exchange between the high-level IEDs of summarized information including data originating from low-level IEDs of a first of the zones and relevant for a high-level function on behalf of some other zones. This reduces the communication load at the higher level function while maintaining an availability level comparable to a completely central solution.
Abstract:
A machine that has at least one actuated mechanism is remotely located from a control station. A two way real-time communication link connects the machine location with the control station. An interface at the control station allows an operator to select one or more virtual constraints on operation of the machine when the machine is performing a predetermined function. The virtual constraints are transmitted over the two way real-time communication link to the machine location. The machine has predetermined safety limits that are stored in a controlling device at the machine location. The stored predetermined safety limits are extracted and automatically mapped to the control station using the two way real-time communication link. The controlling device maps the predetermined safety limits to the virtual constraints.
Abstract:
A pumped-storage power plant is disclosed, such as an electric unit having a converter and a rotating electric synchronous machine. The converter is designed as a modular multilevel converter and the machine is directly connectable to the converter, wherein the converter has an adjustable voltage.
Abstract:
A rotor for an electric machine includes a rotor core having a plurality of rotor sheets (RS1), each of the plurality of rotor sheets including a plurality of flux guide sections, each of the plurality of flux guide sections having a plurality of flux paths and a plurality of flux barriers. The plurality of flux guide sections having a first flux guide section in which a first number of the plurality of flux barriers has a bridge interrupting the flux barrier, and a second flux guide section in which a second number of the plurality of flux barriers has a bridge interrupting the flux barrier. Each bridge is made of a material of high permeance, and the first number of the first flux guide section is different than the second number of the second flux guide section.
Abstract:
An exemplary method and device provides for managing and configuring field devices in an automation installation with a configuration tool. The configuration tool is configured to physically detect a field device in the automation installation, logically incorporate the field device in the automation installation, and configure the field device in the automation installation. For this purpose, the configuration tool uses a predefined field-device-specific information packet that describes the functions and data of the field device and includes a display for displaying the functions and data of the field device in an instantiated manner in windows or dialogs. Windows of the same device entity for the same input context are grouped by a common marking and displayed in a superordinate window.
Abstract:
An exemplary method and device provide for managing and configuring field devices in an automation installation. In order to make the management and configuration of field devices in an automation installation with a configuration tool flexible, a tool-specific information packet is formed from a first field-device-specific information packet and a second field-device-specific information packet. The second field-device-specific information packet including functions and data which go beyond the stipulation of the first field-device-specific information packet. The field device is managed and configured using the tool-specific information packet.
Abstract:
While transient current magnitudes at different locations within a DC distribution system themselves are not a reliable indicator of fault location, it is recognized herein that accumulating energy or pseudo energy values provides a reliable basis for tripping the protection element at a fault location. Thus, in one aspect of the teachings herein, pseudo energy values are accumulated independently during a fault condition, for each of one or more protected branch circuits and the protection element for each such branch circuit is tripped responsive to the accumulated pseudo energy values reaching a defined pseudo energy threshold. The pseudo energy thresholds are defined so that the protection element in the branch circuit where the fault is located will trip first.
Abstract:
Among other things, a distribution transformer and a technique for regulating voltage are provided for herein. The distribution transformer comprises at least three windings and at least two ferromagnetic cores. The distribution transformer may also comprise a power electronic AC-AC converter operable to maintain the input voltage and current of the distribution transformer substantially in phase and/or to reduce fluctuation in the output voltage of the distribution transformer in the event of an increase or decrease in the input voltage, for example.