Abstract:
The present invention relates to a method of controlling an electrical power network (10) in dependence on a sudden event which is liable to lead to further loss or excess of generation or load. The electrical power network (10) comprises plural controllers (20, 22) with each controller being configured to provide for control of controllable apparatus (30) connected to the electrical power network at a different respective location in the electrical power network. The method comprises determining the occurrence of a sudden event that is liable to lead to further loss or excess of generation or load in the electrical power network or part of the electrical power network. The method further comprises receiving plural substantially synchronised quantities in each of the plural controllers (20, 22), each of the plural quantities corresponding to at least one of frequency and angle at a respective one of plural different locations in the electrical power network. The method yet further comprises generating a control output from each of the controllers (20, 22) in dependence on the received plural quantities, each control output being for control of its respective controllable apparatus (30), each controller being operative to generate the control output independent of operation of any other controller and on an ongoing basis in dependence on ongoing receipt of the plural quantities.
Abstract:
Die Erfindung bezieht sich unter anderem auf ein Verfahren zum Übertragen elektrischer Energie über eine elektrische Leitung (20), wobei im Falle eines Lichtbogenfehlers (LBF) auf der Leitung (20) eine Nothandlung zur Beendigung des Lichtbogenfehlers (LBF) vorgenommen wird und nach Beendigung des Lichtbogenfehlers (LBF) mit einer mit der Leitung (20) in Verbindung stehenden Spannungsquelle (30) wieder eine vorgegebene Betriebsspannung (U N ) an die elektrische Leitung (20) angelegt wird. Erfindungsgemäß ist vorgesehen, dass nach Beendigung des Lichtbogenfehlers (LBF) die Spannung (U) der Spannungsquelle (30) zunächst auf eine Sollspannung (Us, Us1, Us2, Us3), die kleiner als die Betriebsspannung (U N ) ist, erhöht wird und erst anschließend von der Sollspannung (Us, Us1, Us2, Us3) auf die vorgegebene Betriebsspannung (U N ) erhöht wird.
Abstract:
Among other things, one or more techniques and/or systems are provided for maintaining an electrical network model describing an electrical network. A fault detection, fault isolation, and load restoration (FDIR) component, a voltage/var control (VVC) component, and/or other components may be provided with access to the electrical network model so that the components may have access to relatively up- to-date and/or accurate information describing the electrical network when executing functionality for the electrical network. For example, the FDIR component and the VVC component may be synchronized based upon the electrical network model so that the FDIR component may have notice of network changes by the VCC component, and/or the VCC component have may have notice of network changes by the FDIR component.
Abstract:
Apparatus and methods of processing large-scale data regarding an electrical power grid are described. According to one aspect, a method of processing large-scale data regarding an electrical power grid includes accessing a large-scale data set comprising information regarding an electrical power grid; processing data of the large-scale data set to identify a filter which is configured to remove erroneous data from the large-scale data set; using the filter, removing erroneous data from the large-scale data set; and after the removing, processing data of the large-scale data set to identify an event detector which is configured to identify events of interest in the large-scale data set.
Abstract:
A system and method for protecting one or more electrical machines during a grid fault on an electrical system connected with the one or more electrical machines. The method includes detecting the grid fault on the electrical system(402); taking one or more first actions from a first set of actions based on the detected grid fault on the electrical system(404); detecting at least one operating condition of the electrical system after taking one or more first actions from the first set of actions based on the detected grid fault on the electrical system(406); and taking one or more second actions from a second set of actions based on the detected at least one operating condition of the electrical system(408).
Abstract:
A load control device is directly connected to a power utility line carrying electrical power using alternating current (AC) and to a load provided by a device located at premises. At the load control device, values are monitored for one or more load-responsive parameters of the electrical power over a period of time. A nominal value is determined for each of the one or more load-responsive parameters based upon the monitored values over the period of time. Threshold values are determined for the one or more load-responsive parameters based upon an acceptable deviation from the corresponding nominal value. A load- responsive parameter is detected as being outside of the threshold values. The load control device is then used to interrupt the providing of power to the load in response to the one or more load-responsive parameters being detected as being outside of the threshold values.
Abstract:
Techniques for determining conditions of power lines in a power distribution system based on data collected by a plurality of sensor units deployed in the power distribution system. The techniques include obtaining data associated with measurements collected by at least two sensor units in the plurality of sensor units, and determining, by using at least one processor, at least one condition of at least one power line in the power distribution system by using the data obtained by the at least two sensor units.