Data

Data is rarely perfect. The analysis still has to work.

You don’t need a perfect dataset to start an analysis.

In the real world, data is rarely available in the quantity and quality required. It is incomplete, inconsistent, sparse or missing. Onsieve builds the analysis around that reality, reconstructing what is missing and showing, step by step, how every value was obtained.

Incomplete Inconsistent Sparse Missing

From Incomplete Data to a Usable Analysis

Select a step, or let it play.

Illustrative data

Every Value Has a Source

The client receives a detailed explanation of how the data was constructed, generated and rebuilt.

Where each value comes from

Each data point is identified as measured, reconstructed or estimated, so nothing is presented as better than it is.

Measured from the plant records
Reconstructed from a validated model
Estimated from reference data

How it was rebuilt

The method behind every gap is documented: the engineering model, the physical relationship, the reference data or the machine learning model used, with the assumptions made.

How far it can be trusted

Reconstructed data is checked against the measurements that exist, and the uncertainty is reported together with the result.

What Can Be Rebuilt

Machine learning is used where it improves on conventional models, to recreate information that was never recorded.

Monthly energy → hourly profile

Hourly generation profile

The monthly energy of a plant becomes a realistic hourly generation profile that keeps the measured monthly totals.

Sparse readings → minute profile

Minute-level load, pressure and flow

Profiles at minute resolution are rebuilt from the few measurements taken during the year.

Scarce data → network behavior

Network inertia and stability

The inertia and the stability of a power network are assessed even where measurements are scarce.

Partial monthly data → hourly load

Regional electricity load

The hourly electricity load of a whole region, as the basis for sizing generation and storage. See the load forecasting method.

Raw sensor data → reliable dataset

Clean, flagged datasets

Anomalies, sensor drift and inconsistencies are detected and flagged, so the analysis starts from data that can be trusted.

Manual analysis → automated reports

Automated analysis and reporting

Once the data chain is built, the analysis and the reports can be repeated automatically as new data arrives.

How We Work

From a business question to a decision supported by evidence.

1

Define the question

The decision the analysis must support: an acquisition, a maintenance plan, a capacity increase or an investment.

2

Review the data

Operating data, maintenance records and design documents are collected and checked for gaps, errors and sensor drift.

3

Model and analyze

Engineering and optimization models are built for the specific asset. Machine learning is added where the data supports it.

4

Report with evidence

Results are presented with their assumptions, uncertainty and supporting data, so the decision can be reviewed and challenged.

The method follows the problemWhere an engineering or optimization model explains the data it is used. Machine learning is added where it improves the result.
Gaps are expectedMissing or coarse measurements are reconstructed and validated against the data that does exist.
Uncertainty is statedEvery result comes with its assumptions and a measure of how far it can be trusted.
Client data stays confidentialData is used only for the agreed purpose.

Start with the data you have

Send a short description of the asset, the data available and the question to be answered. The scope is defined from there.

Discuss an Asset or Project