NTS Energies carries out complete electrical sizing studies, compliant with standards in force and tailored to the needs of industry, developers and institutions. Our approach relies on a rigorous methodology: data collection, detailed modeling, load and protection calculations, then performance validation.
Methodology
- Data collection and validation: loads, single-line diagrams, operating conditions, future development scenarios.
- Standards framework: CSA C22.1, Québec Chapter V, IEC 60364 and European standards (NF C 15-100, EN standards).
- LV/MV modeling and calculations: short circuit, voltage drop, conductor, raceway, transformer and equipment sizing.
- Compliance analysis, then optimization to reduce losses and improve reliability.
- Validation in normal, degraded and development scenarios (loads, distributed generation).
- Complete report and tailored recommendations, ready for your stakeholders.
Deliverables
- Single-line diagram compliant with Canadian, Québec and international standards.
- Complete digital model of the network (loads, protection, scenarios).
- Calculation report: short circuit, voltage drop, sizing, selectivity.
- Regulatory compliance analysis (CSA, Québec, IEC/EN/NF).
- Performance evaluation in normal and degraded modes.
- Tailored technical recommendations.
Optimal protection for your LV/MV networks, ensuring selectivity, fast detection, damage limitation and service continuity. The analysis covers all devices: relays (ANSI 50/51, 50G/51G, 27/59, 46, 49, 67, 87), LV electronic trips, fuses, breakers, reclosers, switches, grounding and differential protection.
Methodology
- Collection and validation: protection inventory (settings, models, curves), single-line diagrams, available short-circuit levels.
- LV/MV modeling in ETAP, CYME or PowerFactory with source and protection settings.
- Compliance verification to CSA C22.1/C22.2, IEC 60255/60947/60364: overloads, short circuits, differential protection, clearing time.
- Settings optimization and upgrade proposals (digital relays, trip logic).
- Resilience analysis against future scenarios (loads, DER, EV, storage).
Deliverables
- Overlaid LV/MV time-current coordination curves (TCC) — PDF + ETAP/CYME source files.
- Complete settings table for ANSI relays and LV trips.
- Detailed technical report: assumptions, short circuit, thermal constraints, selectivity.
- Configured digital model of the network.
- Safety, reliability and optimization recommendations (EV, DER, storage).
Advanced power quality studies to identify, quantify and correct the disturbances affecting the performance of your installations: harmonics, flicker, voltage sags, transients, unbalance and power factor. Analyses compliant with IEEE 519, IEC 61000 and CSA C22.2.
Methodology
- On-site measurements with Class A network analyzers.
- Data processing and spectral analysis (FFT, THD, TDD).
- Modeling of non-linear loads and operating scenarios.
- Comparison against IEEE/IEC/CSA limits.
- Identification of disturbance sources.
- Simulation of solutions (filters, compensation, reconfiguration).
Deliverables
- Complete measurement and diagnostic report.
- Harmonic analysis (THD/TDD), flicker and transients.
- Digital model of the network (ETAP/CYME).
- Technical recommendations (filters, compensation, optimization).
- Compliance table against IEEE/IEC/CSA standards.
Ensure personnel safety, equipment protection and compliance for any grounding system, in accordance with CSA, IEEE 80, IEEE 81, IEC 60364 and the Québec Building Code.
Methodology
- Soil characterization through Wenner/Schlumberger measurements.
- Grounding system modeling (grid, ground rods, foundations).
- Step, touch and transfer voltage calculations.
- MV/LV fault current analysis.
- IEEE/IEC/CSA compliance verification.
- Optimization of geometry, materials and bonding.
Deliverables
- Complete grounding study report.
- Digital model of the grounding system.
- Potential contour mapping and critical zones.
- Reinforcement and compliance recommendations.
- Grounding plans and drawings.
Detailed models of your power systems (LV/MV, generation, storage, dynamic loads) to analyze stability, power flow, transients and overall network performance.
Methodology
- Technical data collection (loads, sources, protection).
- Static and dynamic modeling (load flow, short circuit, transients).
- Simulation of normal, degraded and future scenarios.
- Voltage, frequency and dynamic stability analysis.
- Validation against IEEE/IEC standards and client requirements.
Deliverables
- Complete digital model (ETAP, CYME, PowerFactory).
- Power flow, short circuit and stability reports.
- Constraint and risk analysis.
- Energy and operational optimization recommendations.
Design and modeling of smart microgrids integrating distributed generation (PV, wind), storage, load management, advanced control and islanding strategies. Solutions compliant with IEEE 1547, CSA C22.3 and IEC 62116.
Methodology
- Analysis of energy needs and load profiles.
- Microgrid modeling (sources, storage, controllers).
- Simulation of grid-connected and islanded modes.
- Stability, protection and synchronization analysis.
- Energy optimization (EMS, control strategies).
- Microgrid controller deployment (3 levels, IEEE 2030.7).
- Performance validation and compliance.
Deliverables
- Complete microgrid model.
- Simulation reports (islanding, stability, power flow, storage).
- Control strategies and EMS architecture.
- Microgrid controller architecture and control algorithms.
- IEEE/IEC compliance analysis.
- Deployment and integration recommendations.
Commissioning, functional verification and technical support for your electrical installations: protection, switchgear, transformers, control systems and microgrids.
Methodology
- Pre-commissioning inspection.
- Functional testing (FAT/SAT).
- Relay parameterization and validation (ANSI).
- Verification of protection and automation sequences.
- Load, synchronization and energization tests.
- Personnel training and technical transfer.
Deliverables
- Test records (FAT/SAT).
- Commissioning reports.
- Final protection and PLC settings.
- Updated plans and drawings (as-built).
- Operating guide and recommendations.
Integration, setting and testing of protection automation for your LV/MV networks: interlocking logic (LDC), reclosing, remote indication/control (RAT/RAI), commissioning management (MAE) and dynamic testing of numerical relays.
Methodology
- Inventory of existing automations and protection schemes.
- Definition of logic: interlocks, reclosing, RAT/RAI, MAE.
- Setting and verification of numerical relays (ANSI 25, 27/59, 67, 81).
- Dynamic loop testing (fault simulation) and sequence verification.
- Validation of time diagrams and tripping logic.
- Commissioning tests and team training.
Deliverables
- Detailed automation logic and tripping diagrams.
- Numerical relay settings and interlocking matrices.
- Dynamic test records and selectivity reports.
- Validated time diagrams and replayable test sets.
- Commissioning report and recommendations.
Custom software development for the operation and management of large power grids: dispatching applications, modeling, energy management (EMS) and automation, integrated into your business processes.
Methodology
- Analysis of business processes (operation, dispatching, studies).
- Application architecture design (data models, APIs).
- Development: Python, C++, databases, REST services.
- Integration with simulation tools (PowerFactory, CYME, ETAP).
- Unit, integration and acceptance testing (FAT/SAT).
- Deployment, documentation and team training.
Deliverables
- Delivered and documented functional applications.
- Grid data models and measurement historization.
- SCADA/DMS/EMS interfaces and documented APIs.
- Validation test sets and versioned code.
- User guide, training and post-commissioning support.
Design and deployment of Energy Management Systems compliant with the four-layer EPRI hierarchical architecture: acquisition, supervision, optimization and dispatch. An EMS supervises, optimizes and controls distributed energy resources (DER) and microgrid loads, maximizing the autonomy, reliability and profitability of your site.
Methodology
- Resource mapping: AMI meters, PV inverters, batteries (BMS), generators, EV charging stations, protection relays and grid sensors (voltage, frequency, THD).
- Design of the acquisition layer (Modbus TCP/RTU, DNP3, IEC 61850, MQTT/OPC-UA) and integration with local controllers.
- Implementation of monitoring & forecasting: real-time state, solar and load forecasting, tariff forecasting (TOU).
- Development of the optimization core (EMS core): OPF, MPC, peak shaving, economic dispatch, battery scheduling and load prioritization.
- Dispatch layer: battery power setpoints, inverter voltage/frequency setpoints, genset start/stop, load shed/shift/shave.
- Islanding logic, grid-code compliance, then FAT/SAT testing and operator training.
Deliverables
- Complete EMS architecture per the EPRI model (4 layers).
- Digital model of the microgrid and grid-connected/islanded scenarios.
- Optimization algorithms (OPF, MPC) parameterized for your site.
- SCADA/DERMS integration diagrams and point lists.
- FAT/SAT documents, validations and replayable test sets.
- Compliance report (IEC 61850, IEEE 1547, grid codes).
Design, development and deployment of microgrid controllers compliant with the IEEE 2030.7 reference model: the central processor (hardware + software) that manages generation, storage and loads in a microgrid to keep voltage and frequency stable, in grid-connected or islanded mode.
Methodology
- Analysis of site needs and load profiles, DER inventory (PV, batteries, generators, EV charging stations).
- Three-level hierarchical architecture (IEEE 2030.7): primary control (droop, grid-forming), secondary (AGC, frequency/voltage restoration) and tertiary (economic optimization).
- Development of real-time algorithms: droop P–f / Q–V, synthetic inertia, communication-free power sharing.
- Definition of islanding, reconnection and post-fault restoration strategies (FLISR, self-healing).
- Integration of auxiliary functions: advanced monitoring (AMI, PMU), VVO, congestion management, load and generation forecasting.
- Cybersecurity (IEC 62351, NERC CIP), FAT/SAT testing and operator training.
Deliverables
- Microgrid controller architecture and control diagrams (3 levels).
- Parameterized algorithms: droop, AGC, optimization, islanding.
- Microgrid simulation model (grid-connected / islanded / degraded).
- Integration specifications: IEEE 1547-2018 inverters, BMS, EV V2G/V2H.
- FAT/SAT test records and replayable test sets.
- Compliance report (IEEE 2030.7, 1547, IEC 62351).
