POWER SYSTEM STUDIES

The key to our effectiveness in customer satisfaction lies in a project-oriented approach that also takes into account systemic implications.

Project development involves: 

  • Database setup.
  • Power flow and short-circuit studies.
  • Transient stability studies: dynamic simulations.
  • Small-signal stability studies: modal analysis.
  • Frequency regulation.
  • Voltage control.
  • Sub-synchronous resonance, at EMT and RMS levels.

 

  • Protection adjustment and coordination.
  • Adjustment of Power System Stabilisers (PSS).
  • Power quality, harmonics and flicker studies.
  • Transformer energisation studies (Inrush).
  • Insulation coordination.
  • Ferroresonance analysis.
  • TRV (Transient Recovery Voltage) calculations and circuit breaker definition.
  • Design and verification of earthing grids.

 

From gestation to commissioning.

NET ACCESS

We are committed to developing studies that facilitate project financing and simplify the commercial access process. 

We carry out electrical studies from the early stages of the project up to the final studies for submission to the relevant authorities. 

We are familiar with the specific grid access process in each country. Technical Procedure N°1 in Argentina, Technical Standard for Safety and Quality of Service in Chile, Regional Transmission Regulation in Central America, among others. In turn, our experience and the use of the precise software tool in each country allows us to optimise the path and approval of the connection of a project: generation plants, storage and/or transmission systems.

Our services are aimed at:

  • Confirm the dimensions of the project from a systemic perspective, assessing the impact of its connection on current and future conditions.
  • Validate the choice of connection point or propose alternatives that increase its benefits.

 

  • Determine the presence of constraints, if any, and alternatives for their mitigation.
  • Demonstrate compliance with all requirements/requirements of local authorities.
Ensuring the correct operation of interconnected systems.

SYSTEM OPERATION STUDIES FOR NET OPERATORS

With a focus on operational security, we provide an essential complement to grid operators and major players in the electricity market.

Among the most relevant analyses, we can highlight:

  • Operational analysis for system evolution.
    • Income from high renewable generation. 
    • Transition in the energy matrix, decarbonisation plans and replacement by renewable sources and batteries. 
  • Analysis of (multiple) extreme contingencies and development of defence plans to deal with them in a stable manner. 
  • Analysis of complementary / ancillary services, definition of requirements, performance indices, etc. 
  • Systemic analysis of frequency control. 
    • Primary/secondary/tertiary control. 
    • Minimum inertia requirements. 
    • Load shedding schemes. 
    • Charging ramps for NCRE plants. 
  • Local regional analysis of voltage control. 
  • Analysis of the interconnection of systems, countries.
  • Transmission system expansion assessment. 

DESIGN OF CONTROL AND PROTECTION SYSTEMS (DAG/DAC) TO MAXIMISE DISPATCHES

Transmission system optimization through automation. The goal: a “virtual” transmission line. 

Our services include: 

PHASE 1: Static analysis of the net
  • Identification of limiting elements and scenarios in network N or disturbances (N-1) leading to the overloading of these elements.
  • Definition and identification of the constraints present.
  • Design of the automatic actions required to avoid overloads.
  • Calculation of new transmission limits, optimising transfers and maximising generation.

 

 
 
PHASE 2: dynamic simulations
  • Maximum times available for taking action.
  • Definition of variables of interest for control actions.
  • Definition of communication links.
  • Concrete control actions.

Finally, we evaluate and validate the protection system with its settings, in order to ensure safe and reliable operation at the new transmission limits with the DAG/RAG scheme operational.  

 

EE, together with YVI Labs, has developed Real-Time Photon++. This tool makes it possible to connect the hardware to the simulator (hardware in the loop) and perform tests (SAT) in real-time, using simulations with real contingencies and analysing control behaviour. This method is the only one that ensures the correct and safe behaviour of the new control system.

DESIGN STUDIES

The performance of installation design studies, based on local regulations and international standards (IEEE/IECest ANSI), guarantees the acquisition of the appropriate equipment and validates the design before control authorities. 

Some of the main studies we carry out are: 

  • Short-circuit study and equipment capacity verification.
  • Insulation coordination study.
  • Reactive power compensation study.
  • Busbar capacity study.
  • Grounding grid capacity study.
  • Transient recovery voltage (TRV) studies.
  • Transformer energisation.
  • Power quality studies (harmonics and flicker).

Av. Jorge Newbery 8796 (2000) Rosario, Santa Fe, Argentina Tel.: +54 341 451-6422 / +54 341 452-6016

Manquehue Norte 160, Piso 4 Of 41-1, Las Condes, Santiago de Chile, Chile Tel.: +56 2 32468750/51

 2340 E. Trinity Mills Rd. – Ste. 300 - Carrollton, TX 75006-1947, USA  Tel.: +1 972 695-3222

 CR 12 NO. 79 50 OFIC.: 701 - Bogotá D.C Colombia CP: 110111