Method of status monitoring
AssigneeSiemens Aktiengesellschaft
InventorsLudwig Niebler, Bernhard Streich
Life of this patent
Estimating the term…
Abstract
A method is for status monitoring at least one of two or more current-carrying electrical components, suppliable with electrical energy from an electrical energy source via a common current feed line and from the common current feed line in each case via a separate current supply line, individually openable or closable. In an embodiment, the method includes detecting measured values of an electrical variable in the common current feed line before and after opening or closing one or a plurality of the current supply lines; calculating a difference between a measured value detected before opening or closing and a measured value detected after opening or closing; and determining a status change of at least one of the two or more components based upon a time series of the difference.
Claims17
A method for monitoring a status of at least one current-carrying electrical component of two or more current-carrying electrical components, to which electrical energy is suppliable from an electrical energy source via a common current feed line and from the common current feed line via a separate current supply line of a plurality of current supply lines, to each respective at least one current-carrying electrical component, the at least one current-carrying electrical component being individually openable or closable via a switching process, the method comprising:
- detecting, in a first time frame before a second time frame, at a node on the common current feed line before the common current feed line splits to the plurality of current supply lines, at least one first measured value of an electrical variable in the common current feed line, the first time frame being before a switching process in at least one current supply line of the plurality of current supply lines,
- detecting, in the second time frame, at least one second measured value of the electrical variable, the second time frame being after the switching process;
- calculating a difference between the at least one first measured value and the at least one second measured value;
- and
- determining a status change of the at least one current-carrying electrical component based upon a time series of the difference,
- wherein parameters of the first time frame and the second time frame are settable.
A control and measuring device, comprising:
- a sensor configured to detect, at a node on a common current feed line before the common current feed line splits to a plurality of current supply lines, at least one first measured value of an electrical variable in the common current feed line in a first time frame before a second time frame and detect at least one second measured value of the electrical variable in the common current feed line in the second time frame, the first time frame being before a switching process in one or a plurality of the plurality of current supply lines and the second time frame being after the switching process, wherein electrical current is carried to two or more current-carrying electrical components from an electrical energy source via the common current feed line and wherein the electrical current is carried from the common current feed line via a separate current supply line, of the plurality of current supply lines, to each respective at least one current-carrying electrical component, the two or more current-carrying electrical components being individually openable or closable via the switching process;
- and
- a processor to
- calculate a difference between the at least one first measured value, detected before the switching process, and the at least one second measured value, detected after the switching process,
- determine a status change of the at least one current-carrying electrical component based upon a time series of the difference, and
- set parameters of the first time frame and the second time frame.
Dependencies are inferred from the claim text.