Systems and methods for integrated condition monitoring for power system asset health scoring

A system comprising:

• power system assets comprising respective sub-systems;
• and
• respective intelligent electronic devices (IEDs) connected to the respective sub-systems, the respective IEDs comprising:
• a processor;
• and
• a memory storing computer-executable instructions, that when executed by the processor, cause the processor to:
• measure, non-intrusively, electrical, thermal, and/or mechanical data of the respective assets of the power system;
• categorize the electrical, thermal, and/or mechanical data of the respective assets into the respective sub-systems of each of the respective assets;
• provide to at least one second processor, using at least one communications network, the categorized electrical, thermal, and/or mechanical data of the respective assets;
• identify a first fault feature for a first sub-system of a first power system asset of the respective assets, wherein the first fault feature is influenced by load oscillations in the first power system asset;
• compare the first fault feature to a second fault feature of a second sub-system in a second power system asset of the respective assets, wherein the second fault feature is the same as the first fault feature, and wherein the second fault feature is not associated with load oscillations;
• adjust a threshold value based on the comparison of the first fault feature to the second fault feature of the second sub-system;
• calculate, for a first sub-system of the first power system asset, a first value based on electrical, thermal, and/or mechanical data of the first power system asset included in the categorized electrical, thermal, and/or mechanical data of the respective assets;
• calculate, based on the first value and using recent measurement data of the categorized electrical, thermal, and/or mechanical data of the respective assets, a first health index of the first sub-system;
• calculate, using historical average data of the categorized electrical, thermal, and/or mechanical data of the respective assets, a first health score of the first sub-system;
• determine, based on the first health index, the first health score, a second health index of a third sub-system of the first power system asset, a second health score of the third sub-system, and respective weightings of the first sub-system and the third sub-system, an overall health score of the first power system asset;
• determine that the overall health score is greater than a threshold value;
• and
• generate a warning based on the determination that the overall health score is greater than the threshold value.

A non-transitory computer-readable medium storing computer-executable instructions for non-intrusively measuring power system asset sub-component data and assessing performance of power system assets based on their sub-components, that when executed by a processor of a protection relay, cause the processor to perform operations of:

• measuring, non-intrusively and using respective intelligent electronic devices (IEDs), of a power system, connected to respective sub-systems of respective assets of the power system, electrical, thermal, and/or mechanical data of the respective assets of the power system;
• categorizing, using the respective IEDs, the electrical, thermal, and/or mechanical data of the respective assets into the respective sub-systems of each of the respective assets;
• providing, using the respective IEDs and using at least one communications network, the categorized electrical, thermal, and/or mechanical data of the respective assets;
• identifying a first fault feature for a first sub-system of a first power system asset of the respective assets, wherein the first fault feature is influenced by load oscillations in the first power system asset;
• comparing the first fault feature to a second fault feature of a second sub-system in a second power system asset of the respective assets, wherein the second fault feature is the same as the first fault feature, and wherein the second fault feature is not associated with load oscillations;
• adjusting a threshold value based on the comparison of the first fault feature to the second fault feature of the second sub-system;
• calculating, for a first sub-system of the first power system asset, a first value based on electrical, thermal, and/or mechanical data of the first power system asset included in the categorized electrical, thermal, and/or mechanical data of the respective assets;
• calculating, based on the first value and using recent measurement data of the categorized electrical, thermal, and/or mechanical data of the respective assets, a first health index of the first sub-system;
• calculating, using historical average data of the categorized electrical, thermal, and/or mechanical data of the respective assets, a first health score of the first sub-system;
• determining, based on the first health index, the first health score, a second health index of a third sub-system of the first power system asset, a second health score of the third sub-system, and respective weightings of the first sub-system and the third sub-system, an overall health score of the first power system asset;
• determining that the overall health score is greater than a threshold value;
• and
• generating a warning based on the determination that the overall health score is greater than the threshold value.