Monitoring electrical substation networks
Systems and a method for forecasting data at noninstrumented substations from data collected at instrumented substations is provided. An example method includes determining a cluster id for a noninstrumented substation, creating a model from data for instrumented substations having the cluster id, and forecasting the data for the noninstrumented station from the model.
1. An apparatus, comprising a device to forecast performance for a noninstrumented substation, comprising:
a storage device comprising a historic database comprising historic data for instrumented substations;
the storage device comprising a metadata database comprising metadata for the instrumented substations and for noninstrumented substations;
an unsupervised machine learning manager to generate a cluster of substations by metadata, wherein at least a portion of the substations in the cluster are noninstrumented substations; and
a supervised machine learning manager to generate a forecast for a noninstrumented substation in the cluster from historic data generated from the instrumented substations,
wherein generating the forecast comprises:
creating a vector of features, wherein the vector of features comprises a binary vector of clustering features and a binary vector of forecasting features:
simulating a predictive performance across all substations; and
determining if termination criteria have been met to terminate the simulation.
2. The apparatus of claim 1 , wherein the historic data comprises active power (P), reactive power (Q), voltage, apparent power (S), or voltage-ampere reactive (VAR), or any combinations thereof.
3. The apparatus of claim 1 , wherein the device comprises an auxiliary data source manager to retrieve data from an external database in a cloud, an internet-of-things (IoT) device, or a sensor, or any combinations thereof.
4. The apparatus of claim 3 , wherein the external database comprises weather data, metadata for substations, or scheduling data, or any combinations thereof.
5. The apparatus of claim 3 , wherein the IoT device comprises a traffic monitoring device, a weather station, or a temperature sensor, or any combinations thereof.
6. The apparatus of claim 1 , wherein the device comprises a performance simulator to simulate forecasts of deployment strategies for instrumenting substations.
7. The apparatus of claim 6 , wherein the performance simulator creates a graph of deployment cost versus forecasting performance.
8. A method for forecasting data for a noninstrumented substation, comprising:
accessing metadata for a plurality of substations;
grouping the plurality of substations into a plurality of dusters, based, at least in part, on the metadata; and
assigning the cluster id to each of the plurality of dusters;
determining a cluster id for the noninstrumented substation;
creating a model from historic data for instrumented substations having the duster id; and
forecasting the data for the noninstrumentcd substation from the model;
creating a vector of features, wherein the vector of features comprises a binary vector of clustering features and a binary vector of forecasting features;
simulating a predictive performance across all substations; and determining if termination criteria have been met.
9. The method of claim 8 , comprising measuring historic data for the instrumented substations, wherein the historic data comprises active power (P), reactive power (Q), voltage, apparent power (S), or voltage-ampere reactive (VAR), or any combinations thereof.
10. The method of claim 8 , comprising forecasting an equipment failure in a noninstrumentcd substation, based, at least in part, on values measured at the instrumented substations for reactive power (Q), voltage, apparent power (S), or voltage-ampere reactive (VAR), or any combinations thereof.
11. The method of claim 8 , wherein grouping the plurality of substations into the plurality of clusters comprises:
selecting metadata features related to power consumption; and
performing a clustering algorithm to create the clusters.
12. The method of claim 11 , wherein the metadata features comprise average power, average inter-day correlation, area load classifications, work schedules, regional energy tariffs, weather data, seasonal data, or traffic patterns, or any combinations thereof.
13. The method of claim 8 , comprising:
determine if the predictive performance has improved; and, if so,
copy a current binary vector of clustering features into a best feature store;
select a random element in the current binary vector of clustering features and Inver a feature bit; and
rerun the simulation.
14. The method of claim 8 , wherein creating the model comprises:
aggregating the data for all of the instrumented substations having the cluster id; and
creating the model from the aggregated data.
15. The method of claim 8 , wherein creating the model comprises:
creating a model for each instrumented substation having the cluster id; and
performing an individual forecast for the noninstrumented substation using each model.
16. The method of claim 15 , Wherein forecasting the data comprises aggregating the individual forecast for each noninstrumented substation to form an aggregated forecast.
17. The method of claim 8 , comprising generating a forecast for an instrumented substation.
18. The method of claim 17 , comprising:
creating a model for the instrumented substation from the historic data; and
generating the forecast.
19. The method of claim 8 , comprising determining a deployment strategy for deploying instrumentation to a portion of the plurality of substations.
20. The method of claim 19 comprising:
generating initial state features;
iterating state features;
evaluating average substation performance;
determining if termination criteria have been met; and
generating implementation plan.
21. The method of claim 20 , wherein the implementation plan comprises a graph of average substation performance versus deployment cost.
22. A non-transitory, machine readable medium, comprising instructions, which when executed, direct a processor to:
obtain metadata for a plurality of substations comprising both instrumented and noninstrumented substations;
create a cluster of substations based on the metadata;
obtain historic data for the instrumented substations;
generate a forecast for a noninstrumented substation;
create a vector of features, wherein the vector of features comprises a binary vector of clustering features and a binary vector of forecasting features;
simulate a predictive performance across the plurality of substations; and
determining if termination criteria have been met.
23. The non-transitory, machine readable medium of claim 22 , comprising instructions, which when executed, direct the processor to:
simulate performance for different distributions of instrumentation across the plurality of substations;
determine if termination criteria are met; and
create a graph of performance versus deployment cost for the different, distributions of instrumentation.