Abstract: A method for determining/dimensioning measures for restoring an electrical power system, which experiences or is heading for a voltage instability, to a steady-state condition, wherein there is no immediate risk of instability. An actual voltage/phase angle in the electrical power system is determined. The power unbalance within at least one sub-area in the electrical power system is determined. Suitable power-balancing measures are determined. The extent of the respective measures is determined. The power-balancing measures are carried out. Also, a device for carrying out the method.

Abstract: A method for stabilization of the power balance in an electric power system including a number of nodes. An instantaneous value of the mains frequency of the electric power system is sensed. In dependence on the frequency deviation of the instantaneous value from a reference frequency value, a selected part of the electric power system, connected in a node, is disconnected in the node. A voltage amplitude value is sensed in the node. A measure of the magnitude of the deviation of the voltage amplitude value from a reference amplitude value is formed. A time lag is formed in dependence on the measure of the magnitude. The part of the electric power system is disconnected in dependence on the time lag.

Abstract: A carriage for transport of a load, for example a load pallet, along a rail pair in a so-called deep racking store, has a carrier arrangement which, in a deactivated transport position, passes under a load resting on the rail pair. The carrier arrangement is disposed, in an activated lifting position, to carry the load from beneath so that it is free of the rail pair. The carriage has a supporting frame or chassis provided with at least four wheels. The carrier arrangement is rigidly connected to the frame or chassis and each wheel is journalled in an associated arm. The arm is pivotally journalled in the frame so as to be able to raise and lower the wheel in relation to the frame. The arm is operated by an operating device.

Abstract: A carriage for transport of a load, for example a load pallet, along a rail pair in a so-called deep racking store, has a carrier arrangement which, in a deactivated transport position, passes under a load resting on the rail pair. The carrier arrangement is disposed, in an activated lifting position, to carry the load from beneath so that it is free of the rail pair. The carriage has a supporting frame or chassis provided with at least four wheels. The carrier arrangement is rigidly connected to the frame or chassis and each wheel is journalled in an associated arm. The arm is pivotally journalled in the frame so as to be able to raise and lower the wheel in relation to the frame. The am is operated by an operating device.

Abstract: The present invention provides a substantially tubular carrying case, wherein the tube is sectioned into multiple substantially separated transverse compartments for carrying personal items. In one embodiment, the carrying case looks like a golf bag. In another embodiment, the carrying case is a diaper bag. In a further embodiment, the carrying case is a diaper bag that looks like a golf bag.

Abstract: A distributed power generation system (100) has at least two distributed power sources (104) connected to a point of connection (150) to a power utility network by interconnections, and is provided with a system protection scheme. The system protection scheme comprises at least three system protection terminals (18). One system protection terminal (18A) is located in the vicinity of the point of connection (150), while two others (18B-E) are located in the vicinity of one power source (104) each. The system protection terminals (18) are interconnected by a communication system (22), using a substantially dedicated communication resource. The system protection terminals (18) are equipped to measure characteristics of the power system at that particular location, preferably complex ac quantities and stability indicators. The measurements are spread to other system protection terminals (18).

Abstract: The present invention discloses a system protection scheme comprising of at least two system protection terminals (18), introduced at suitable locations in an electric power system (1). The system protection terminals (18) are interconnected by a communication system (22), preferably using a substantially dedicated communication resource. At least-two of the system protection terminals (18) are equipped to collect measurement signals (72) associated with time stamped voltage or current values of the power system at that particular location or quantities derivable therefrom. The measurements are evaluated and related data is spread to other system protection terminals (18). At least one of the system protection terminals (18) is equipped to evaluate the existence of poorly damped power oscillations in the power network and if necessary provide control signals (74) to power system actuating units. The evaluation is preferably based on changes in the node angle differences between the measurement locations.