Real-time deviation detection of power system electrical characteristics using time-synchronized measurements

A system for identifying deviations in electrical parameters within a power system, the system comprising:

• at least one data processor;
• memory storing instructions, which when executed by at least one data processor, result in operations comprising:
• continuously measuring, using time-synchronized measurement devices, a set of voltages and currents associated with a plurality of electrical components within the power system;
• recursively computing, using a moving window comprising two or more most recent time instances, for each electrical component of the plurality of electrical components, a representative set of electrical parameters based on the measured set of voltages and currents at each of the two or more recent time instances, wherein the moving window is of a variable window length;
• determining, for each electrical component based on the recursive computing, an electrical characteristic matrix based on the representative set of electrical parameters, wherein the electrical characteristic matrix comprises a plurality of elements representing real components and imaginary components;
• identifying, for each electrical component based on the recursive computing, a deviation of at least one element of the plurality of elements based on comparison of the at least one element with a reference value of the electrical component;
• determining, in real time based on the recursive computing, an estimated distance to the deviation based on recursive calculations of a change between the at least one element at (i) a first measurement time instance prior to the identified deviation at a first point within the power system and (ii) a second measurement time instance after the identified deviation at a second point within the power system, wherein the two or more most recent time instances comprise the first measurement time instance and the second measurement time instance;
• and
• providing an alert of the deviation for further characterization of an abnormality in the power system.

A non-transitory computer program product for identifying deviations in electrical parameters within a power system, the non-transitory computer program product storing instructions, which when executed by at least one data processor forming part of at least one computing device, result in operations comprising:

• continuously measuring, using time-synchronized measurement devices, a set of voltages and currents associated with a plurality of electrical components within the power system;
• recursively computing, using a moving window comprising two or more most recent time instances, for each electrical component of the plurality of electrical components, a representative set of electrical parameters based on the measured set of voltages and currents at each of the two or more recent time instances, wherein the moving window is of a variable window length;
• determining, for each electrical component based on the recursive computing, an electrical characteristic matrix based on the representative set of electrical parameters, wherein the electrical characteristic matrix comprises a plurality of elements representing real components and imaginary components;
• identifying, for each electrical component based on the recursive computing, a deviation of at least one element of the plurality of elements based on comparison of the at least one element with a reference value of the electrical component;
• determining, in real-time based on the recursive computing, an estimated distance to the deviation based on recursive calculations of a change between the at least one element at (i) a first measurement time instance prior to the identified deviation at a first point within the power system and (ii) a second measurement time instance after the identified deviation at a second point within the power system, wherein the two or more most recent time instances comprise the first measurement time instance and the second measurement time instance;
• and
• providing an alert of the deviation for further characterization of an abnormality in the power system.