Papers
Papers and studies
Technical papers from the TERRA case-study program, added to as studies land. Each one is generated from a runnable study: every number in the text is read from a committed result file, and the study can be re-run to reproduce it. Free to read.
Chillers and building plant1
Sensor bias and flow inference in chilled-water plants, under a pre-registered protocol.
Data centers13
Cooling, capacity and diagnosis, from a single rack up to a campus: thermal inference, sequential diagnosis, free cooling and the resolution a decision actually needs.
- Annual savings of an air-side economizer for a data-center hall, priced hour by hour on a staged air-cooled chiller plant
- Computational scaling of steady-state thermal network solves in data center buildings from 8 to 1,024 racks
- Conductance dimensioning and the reliability of conclusions drawn from graph-based thermal inference in data centers
- Detection of efficiency degradation in a staged water-cooled chiller plant from two windows of hourly power telemetry by a fitted loss scale
- Effect of workload balancing across data-center buildings on campus PUE and rack temperatures
- Evening peak reduction on a two-building data-center campus with a scheduled battery
- Hour-by-hour versus annual-average pricing of a campus chiller plant with free cooling and thermal storage
- Isolation of a hidden heat load between two identical server racks from a single shared temperature reading with Gaussian and sampled posterior representations
- Model resolution and the choice of cooling action in a data-center facility during a heatwave
- Ranking containment retrofits on a data-center campus with a shared chiller plant by site energy and by PUE
- Reliability of Gaussian uncertainty bands for a thermal-runaway parameter estimated from a single room-temperature reading
- Sequential updating of a Bayesian thermal fault diagnosis in a data-center building from temperature readings that arrive one at a time
- Weather-driven power usage effectiveness of a data-center hall from a three-mass thermal model, and recovery of its parameters from telemetry
Power systems10
Contingency risk, interdiction and planning queries on public test systems (RTS-GMLC, IEEE-14), including comparisons against Monte Carlo.
- A Controlled Replication of Stochastic N - k Interdiction on RTS-GMLC: Unconditional Optimality at k 2 , and Why Ranking Beats Search
- Certified Region-Decomposed Contingency Inference: Local-to-Global TERRA on Power and Thermal Networks
- Cross-Domain Inference-Conditioned Interdiction in Coupled Fuel–Electric Power Networks
- Forward Uncertainty by Cutting-Plane Surrogate and Control Variate: RTS-GMLC min-load-shed LP and IEEE-14 AC power flow
- Inference-Conditioned Stochastic N - k Interdiction: Extending Fixed-Scenario Security Analysis with TERRA
- One Census, Nine Questions: Planning queries from a certified surrogate of a load-shedding model under uncertain transmission line ratings
- Product-Grid Quadrature versus Monte Carlo Sampling on a Three-Line Network: expected curtailment and variance attribution under uncertain line ratings
- Structured Probabilistic Inference for Power-System Contingency Risk: A Comparison with Monte Carlo Simulation
- What Survives: Nine planning questions from one census of a non-convex power-flow model, with gradients from the solve itself
- Where Probability-Ordered Enumeration Stops Paying: Watchlist Coverage of Rare Contingencies from RTS-GMLC Area 1 to the Full 73-Bus System
Water distribution6
Leak detection and localization, state estimation and sensor placement on public benchmarks (Modena, EPA Net3, BattLeDIM L-Town).
- A water network through a week: tanks, level-controlled pumps and demand patterns on EPA Net3, and what sparse readings tell about the tanks no one meters
- Bayesian inference of state, leak size and leak location in a small water network from two pressure gauges
- Bayesian leak localization in water distribution networks from a day of sparse pressure and demand readings
- Calibrated Bayesian state estimation of a water distribution network from sparse flow meters, and what its graph decomposition separates
- Leak detectability from pressure gauges in a water distribution network under correlated night-time noise, and the value of further gauges
- Leak detection and localization in a water distribution network from a year of utility SCADA readings
District heating and cooling2
Calibration of a heating network from operating data, and what each set of sensors can identify.
- Calibrating a district heating network from operating data: a posterior over pipe resistances and valve characteristics, and what each set of sensors identifies
- Steady-state analysis of a small district heating loop: thermo-hydraulic state, energy accounting, and consumer duties inferred from return temperatures