US 2019/0056436 A1 · SIMILARITY DETECTION OF ABNORMAL WAVEFORMS USING PMU MEASUREMENT

Abstract

Example implementations described herein are directed to detection of historical anomalous events that are similar to currently occurring events in a transmission power system based on phasor management unit (PMU) data to provide information to grid operators with online decision support. From the high-resolution time synchronized PMU data, the historical events can be quickly retrieved and compared to the currently occurring event so that operators can be provided with remedy actions that were attempted in response to the historical events. Utilization of PMU information for such decision support may compliment operation practices relying on supervisory control and data acquisition (SCADA) measurements by allowing a much fast response to the currently occurring event. Accurate identification of similar, historical events can advise grid operators of the cause of disturbances and provide ideas for response. Implementations of the proposed technology may improve the resilience and reliability of the transmission power systems.

Claims15

Dependent claims

A system configured to manage one or more phasor measurement units (PMUs), the system comprising:

a memory configured to store measurement data from the one or more PMUs, the measurement data comprising first measurement data including at least one of frequency data and voltage data, and second measurement data;
and
a processor configured to:
for an instance of the first measurement data being outside a threshold:
identify a corresponding PMU from the one or more PMUs associated with the instance;
and
capture, based on the instance, a first window of the first measurement data and the second measurement data of the corresponding PMU;
process incoming data from the one or more PMUs;
for a second window of the incoming data corresponding to the first window,
retrieve the first measurement data and the second measurement data corresponding with the instance;
and
conduct a comparison between the first window of the first measurement data and the second measurement data, and the second window of the incoming data.

9 more elements

A method of managing one or more phasor measurement units (PMUs), the method comprising:

storing measurement data from the one or more PMUs, the measurement data comprising first measurement data including at least one of frequency data and voltage data, and second measurement data;
and
for an instance of the first measurement data being outside a threshold:
identifying a corresponding PMU from the one or more PMUs associated with the instance;
and
capturing, based on the instance, a first window of the first measurement data and the second measurement data of the corresponding PMU;
processing incoming data from the one or more PMUs;
for a second window of the incoming data corresponding to the first window,
retrieving the first measurement data and the second measurement data corresponding with the instance;
and
conducting a comparison between the first window of the first measurement data and the second measurement data, and the second window of the incoming data.

8 more elements

Dependencies are inferred from the claim text.

Similarity detection of abnormal waveforms using pmu measurement

Life of this patent

Similarity detection of abnormal waveforms using pmu measurement

Life of this patent

Abstract

Claims15