Categories - Energy Systems
Sub Categories
- Global and Regional Energy System Models - 16 projects
- Building Energy Monitoring - 20 projects
- Grid Analysis and Planning - 30 projects
- Energy Policy - 4 projects
- Energy System Modeling Frameworks - 89 projects
- Energy Markets - 9 projects
- Grid Management and Microgrid - 18 projects
- Renewable Energy Integration - 21 projects
- Energy Data Accessibility and Integration - 37 projects
- Load and Demand Forecasting - 10 projects
Topics
energy-system-model, pypsa, power-systems-analysis, optimal-power-flow, power-flow, powersystem, microgrid, power-system-analysis, nrel, loadflow, capacity-expansion-planning, electrical, powersystems, matpower, cim, adequacy, power-grids, gym-environments, power-network, oemof, milp, power-system, smart-grids, co-simulation, renewable-timeseries, efficiency, mathematical-modelling, optimisation-model, gymnasium, sequential-decision-making-problems, potentials, times-model, power-system-dynamics, short-circuit, oep, powsybl, demand-flexibility, eia-api, smart-grid, minigrid, previsionnel, bilan, energy-management-systems, clean-energy, rte, load-flow, tyndp, modelling-framework, energy-management, osemosys, very-large-scale-systems, tight-and-compact-formulation, state-estimation, power-to-hydrogen, network-constrained-unit-commitment, integrated-resource-planning, hydro-cascade-basins, hourly-resolution, generation-storage-networks-investments, energy-storage-systems, system, synchronous-machine, agent-based, cgmes, anaconda, miniconda, spine-toolbox, ev-charging, green-energy, myenergi, heat-pump, dynamic-line-rating, dispatch, free-datasets, datamodel, calliope-models, costs, energy-optimization-model, dsmr, dsmr-parser, nifi, nifi-processors, slimme-meters, power-system-stabilizer, power-system-stability, slimmemeter, flexibility-modeling, power-system-dynamic-modeling, power-grid, gridcal, energy-modelling, octopus-energy, iec61970, smart-home, dynamic-phasors, electromagnetic-transient, emt, quasi-stationary, grid2op, powergrid-operation, distribution-shift, reopt-api, cim-import, reopt-lite-api, cim-export, reoptjl, urban-heat-island, dc-power-flow, dynamic-investment-decisions, rhdf5, transactive-energy, consumption, minlp, electricity-networks, active-network-management, transient-stability, simulator-automation-server, simauto, pythran, powerworld-simulator, powerworld, graph-analysis, contingency-analysis, springframework, public-lighting, oslp, iec61850, dlms, distribution-automation, cucumber-tests, hardware-designs, smartgrid, power-simulator, FAME, microgrid-model, pycaret, policy, data visualization, time-series-aggregation, representative-days, k-medoids-clustering, k-means-clustering, hierarchical-clustering, energy transition, electricity market modelling, high-resolution, power market model, open source model, GAMS, virtual-sensors, metering, emonpi, acdc, stateestimation, shortcircuit, eigen3, pypsa-earth, pypsa-africa, power-system-planning, power-system-model, operational-optimization, investment-optimization, energy-system-planning, stochastic-simulation-algorithm, manipulatewidge, electric, dygraphs, decarbonisation, energy-demand-forecasting, energy-demand, electricity-load, gridlabd, v2s, v2h, v2g, v2b, smart-charging, ev-integration, bidirectional-charging, nx, green-energy-hub, energy-origin, environmental, hypervision, alerting, mixed-integer-linear-programming, energy-flexibility, stochastic-power-flow, newton-raphson, multi-terminal, latin-hypercube, comon-information-model, stability, psp-ufu, industry-aplication, harmonics, graphical-user-interface, free-libre-open-source-software, free-and-open-source-software, computer-aided-design, open-energy, oedi, datalake, glpk, energy-models, solar-system, earth-osm, glow, esphome, mbus, modelling-tool, process-systems-engineering, energy-information-administration, typical-periods, aggregation, off-grid, monophased, islanding, ignite-cli, grid-system, eolian, cosmos-sdk-proto, 3-phases, 3-phase-inverter, rts, worldbank-gost, labor, gender, user-defined-control, loxone, energy-generation, canbus, municipal-software, greenbutton, green-button, energy-usage, download-my-data, connect-my-data, water-energy-nexus, unit-commitment, substations, renewable-resources, n-1-criterion, electricity-supply, economic-dispatch, dispatchable-units, dc-flow, times, optimization-model, integrated-markal-efom, bottom-up-model, energy-forecasting, wma, sma, ses, rnn, lstm, gru, electric-load-forecasting, arima, time-of-use-tariff, electric-vehicle-charging-station, solarnode, solarnetwork, plugin-architecture, osgi, balancing, transmission-grid, planning-tool, distribution-grid, students, investment, energy-planners, linopy, villas, esdl, energy-transition-calculation, energy-information, description-language, bulma-css, lovelace-card, nuclear, npps, voltage-drop-analysis, ddj, openadr, lf-energy, testbed, software-in-the-loop, nyiso, newyork, kaggle-dataset, kaggle-competition, kaggle, clcpa, power-stations, klu, agent-based-simulation, tegola, maplibre-gl-js, imposm3, standalone-software, renewable, flexibility, cems, snakemake-workflow, sector-coupling, great-britain, matpower-github, timedomain, small-signal, modeling-dae, eigenvalue-analysis, andes, energy-systems-modelling, power-supply, openmodelica, market, electricity-consumption-forecasting, electricity-consumption-analysis, ireland, energy-planning, short-circuit-analysis, pandapower, electrical-systems, electrical-system, electrical-schematics, electrical-rules-check, electrical-networks, electrical-network-analysis, coordination-study, marktstammdatenregister, modular, groovy, extensible, pudl, natural-gas, ferc, etl, eia923, eia860,
Projects
Contributors
ArthurWaeber [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Darynarli “[email protected]”
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
oep, open-energy-family
astronobri [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
selenasat [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
climate-change, environmental, plotly
KySuongLam [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
climate-change, environmental, plotly
Franck Nijhof [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
varta, varta-storage, asyncio, water, asynchronous, recycling, trash, twentemilieu, waste, do-not-use and 28 more
Philipp Reuber [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
cim, cim-export, cim-import, iec61970
Jonathan Klimt [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
cim, cim-export, cim-import, iec61970, cloud-computing, operating-system, operating-systems, osdev, unikernel, virtualization and 2 more
Jonathan Klimt [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
cim, cim-export, cim-import, iec61970, cloud-computing, operating-system, operating-systems, osdev, unikernel, virtualization and 2 more
gmkeebiy [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Analysis and Planning
Topics:
imposm3, maplibre-gl-js, tegola
sstroemer [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system-model
Stefan Strömer [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system-model
Daniel Schwabeneder [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system-model
Gerhard Totschnig [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system-model
Shengy [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
J-K-Peng [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
andes, eigenvalue-analysis, modeling-dae, power-system, power-system-analysis, power-system-dynamics, power-system-simulation, powerflow, small-signal, timedomain and 1 more
Christian Heinrich Hohlfeld [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Casper-Olsen [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Management and Microgrid
Topics:
energy-origin, green-energy-hub, nx
Torio [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Diana Maldonado [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Keno Oltmanns [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Meike Kühnel [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Maldonado Castro, Diana Teresa [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Hancock, Cody [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
gaik_na [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
von Rüden [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Wilson González Vanegas [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
matpower, matpower-github
polyfloyd [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
glsl, glslviewer, raytracing, shadertoy, fritz-box, fritzbox, lua, upnp, model-predictive-control
Luke Kiernan [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
powersystems, simulations
rompic [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
mattermost
ll-ara [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system-modelling, energy-systems, modelling-framework
leostimpfle [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
Jiro Matsuzawa [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
Ellermann [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
“mald_di” “[email protected]”
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
upad_aj [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Sunke Schlüters [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Pedro Lacerda de Magalhães [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Renewable Energy Integration
Topics:
Mainak Dan [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Shrirang Abhyankar [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Analysis and Planning
Topics:
skrepkaq [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
consumption, hacs, metering, power, virtual-sensors
Radoslav [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Analysis and Planning
Topics:
imposm3, maplibre-gl-js, tegola
Damien [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Analysis and Planning
Topics:
ascii-art, ascii-table, weather, wego, imposm3, maplibre-gl-js, tegola
Jonas [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
matt-wyatt-e3 [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Blake Garner [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
consumption, hacs, metering, power, virtual-sensors
AndreasHD11 [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
climate-change, electrification, energy-modelling, grid, power, power-grids, renewable-energy, sustainability
Daniel Thom [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Load and Demand Forecasting
Topics:
electricity-load, energy-data, energy-demand, energy-demand-forecasting
Rory Finnegan [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
optimal-power-flow, power-network, bayesian-optimization, data-storage, hdf5, hdf5-binaries, hdf5-files, hdf5-library, jld, mat and 22 more
Thomas Harvey [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
batteries, electric-vehicles, renewable-energy, solar, wind, json-api, jsonapi, redux-json-api, amqp, queue-tasks and 12 more
garbaylouis [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
Robin Grether [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Data Accessibility and Integration
Topics:
cristinafray [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
acdc, cim, comon-information-model, electrical, electrical-engineering, latin-hypercube, multi-terminal, newton-raphson, power-systems, powerflow and 1 more
Krien [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
energy-system, modelling-framework
Aiswarya Kaitheri Kandoth [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Management and Microgrid
Topics:
juangutierrez [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring, Energy Monitoring and Management
Topics:
climate-change, environmental, plotly
HarmonicReflux [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
decarbonisation
Minshu Deng [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy Policy
Topics:
Elinor Montmasson [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Management and Microgrid
Topics:
Lars Nielsen [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Management and Microgrid
Topics:
energy-origin, green-energy-hub, nx
Chris [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Sebastian Struß [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Georg Z. [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Normann [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Dominik Siebel [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Bobby Noelte [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Dominique Lasserre [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Jakob Moecke [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
BerndCzech [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Andreas [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
joda9 [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
clairetrevisan [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy Policy
Topics:
Hin Yan Liew [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
climate-change, environmental, plotly
Deb Bassett [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Monitoring and Management, Grid Management and Microgrid
Topics:
bath, school
Derek Wacks [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy System Modeling Frameworks
Topics:
Martin Moraga [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
dynamic-phasors, electromagnetic-transient, emt, power-systems, powerflow, quasi-stationary
Philipp Fensch [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
dynamic-phasors, electromagnetic-transient, emt, power-systems, powerflow, quasi-stationary
Ruben Sander [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
dynamic-phasors, electromagnetic-transient, emt, power-systems, powerflow, quasi-stationary
pierrepetersmeier [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Grid Analysis and Planning
Topics:
agent-based-simulation, energy-transition, powersystem, research
marcelofcastro [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, energy-system-modeling, gridcal, modelica, power-grid, power-grids, power-system-dynamic-modeling, power-system-dynamics, power-system-simulation, power-system-stability and 8 more
Luigi Vanfretti [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, energy-system-modeling, gridcal, modelica, power-grid, power-grids, power-system-dynamic-modeling, power-system-dynamics, power-system-simulation, power-system-stability and 46 more
Tin Rabuzin [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, energy-system-modeling, gridcal, modelica, power-grid, power-grids, power-system-dynamic-modeling, power-system-dynamics, power-system-simulation, power-system-stability and 11 more
Krokkodilli [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, energy-system-modeling, gridcal, modelica, power-grid, power-grids, power-system-dynamic-modeling, power-system-dynamics, power-system-simulation, power-system-stability and 13 more
Becker [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Load and Demand Forecasting
Topics:
Elias [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
Markus Fleschutz [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Load and Demand Forecasting
Topics:
decarbonization, decision-support, demand-response, energy-system-modeling, flexibility-modeling
Piotr Kosiński [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Energy Markets
Topics:
ganache
Daniel Olsen [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
Lane Smith [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
George Tong [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Distribution and Grids, Grid Analysis and Planning
Topics:
ranjitster [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
planning, power, power-system-analysis, power-system-simulation, power-systems, renewable-energy, renewables
nmgeek [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
planning, power, power-system-analysis, power-system-simulation, power-systems, renewable-energy, renewables, amqp, queue-tasks, queue-workers and 7 more
Kai J. [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Building Energy Monitoring
Topics:
climatechange, electric-vehicle-charging-station, energy-management, energy-storage, heatpump, photovoltaics, time-of-use-tariff
COSSART Quentin [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
FredericSabot [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
GARBAY Louis [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
aferreira [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
LOSSEAU Romain [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
AlexPoiron [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis
Sören Lohr [email protected]
OST Projects: 1
Categories: Energy Systems
Sub Categories: Energy Modeling and Optimization, Energy System Modeling Frameworks
Topics:
energy-system, power-system-simulation, power-systems, power-systems-analysis