Transmission & Distribution_

 

 

 

 

 

 

 

 

 

 

Transmission Planning

SMEC’s capability in transmission planning has been established and refined through years of research and development in direct association with power utilities around the world. The capability includes the application of the latest sophisticated computerised tools and methods to transmission planning problems and the formulation and development of tailor-made software products where necessary.

With increasing global focus on the deregulation of the electrical power industry, utilities and independent power producers (IPPs) are striving to minimise the cost of power transmission systems whilst achieving improved overall reliability of those systems. SMEC has taken a leading role in planning power transmission systems in many countries and providing services for selection of the best transmission expansion options.

Tariff design for transmission pricing is an important integral component of transmission planning. SMEC has a proven track record in the determination of these transmission tariffs based on pure economic principles such as long run marginal cost (LRMC) or to achieve key financial indicators such as internal rate of return (IRR) on the project funding phase.

In the area of transmission system reliability assessment, SMEC has several in-house software packages that use Monte Carlo simulation methods for the determination of interconnected system reliability and composite reliability of generation and transmission systems.

SCOPE OF SERVICES

  • transmission planning
  • power system reliability assessment
  • tariff design for transmission pricing

SMEC's capability in transmission planning achieved global acclaim during the planning and implementation of the Snowy Mountains Hydroelectric Scheme, which formed the interconnecting link between the major load centres of south-eastern Australia. Since then the capability has been refined and regularly updated in accordance with world best practice. The latest sophisticated computerised tools have been developed or acquired and used to plan transmission systems in many countries. Operational results in implemented systems have confirmed the effectiveness of the planning.

The services offered by SMEC are extensive and include:

Transmission planning

  • establishment of new network models or expansion of existing network models to include new features and/or integrate with other models
  • load flow studies with various optional convergence criteria and expansion constraints
  • transient stability studies, including full governor and excitation system models approved by IEEE, or any user defined models, including extensive use of graphical output
  • dynamic stability studies, including full governor and excitation system models approved by IEEE (including extensive use of graphical output to facilitate eigenvalue and eigenvector interpretation)
  • optimum placement and design of:
    • capacitive/inductive compensation
    • static var compensators
    • power system stabilisers
  • total system expansion studies, including optimisation of the transmission network with respect to:
    • conductor size
    • reactive compensation/control
    • loss minimisation
  • transient studies for simulation of:
    • load rejection

    • load acceptance

    • dynamic over-voltages
    • system separation
    • protection coordination, with automatic impedance loci plotting for comparison with protection relay characteristics.
  • design and specification of independent power producer (IPP) installations for successful integration with the total power system.

Power system reliability assessment

  • composite reliability assessment of generation and transmission systems
  • reliability assessment of interconnected power systems.

Tariff design for transmission pricing

  • rationalisation of tariffs between economic long run marginal cost (LRMC) requirements and financial requirements
  • determination of tariffs to fulfill future financial indicators for transmission projects
  • setting up of financial models to assist prediction of utility financial performance for a range of transmission expansion and tariff scenarios.
 
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