Ipsa 2 Case Studies

Ipsa is used for a wide range of different power system analysis ranging from simple grid connection of generation projects, through to large industrial sites, through to the routine design, operations and planning of large wide-area public distribution networks. A selection of case studies and typical applications is provided below.

Distribution Network Analysis

Ipsa forms the primary network design analysis tool for half the UK Distribution Network operators for the design, operation and planning analysis for their 11kV through to 132kV networks. Most operators widely use the load flow and fault level tools as well as the harmonic analysis, transient stability and protection co-ordination. Ipsa's calculation engines are also embedded into custom analysis tools for long-term network planning and use of system charge calculations.

Industrial System Analysis

Ipsa has been used for system design compliance assessments of major oil and gas facilities including the Shell Sakhalin II LNG refinery and Exxon South Hook LNG import terminal. This included analysis of load flow, fault level, motor starting, transient stability, harmonic analysis, harmonic filter design, and protection review and setting. All work was performed to DEP, IEC or other appropriate standards.

Wind Farm Development

Ipsa is routinely used to provide grid connection studies for wind farms ranging from single turbine connections through to 300MW onshore windfarms and 1000MW offshore wind farms. These studies typically start with initial site selection and capacity studies. Grid connection studies are undertaken to identify the main equipment ratings using loadflow and fault level analysis, through to full grid code compliance studies requiring detailed transient and harmonic analysis.

Advanced Technologies

Ipsa is used for a number of projects requiring the application of new and novel technologies. The type of analysis ranges from site selection studies through to detailed loadflow, fault level, grid connection investigations and costing for projects such as:

  • HVDC links for large offshore wind farms for a number of projects in the UK and internationally.
  • assessment of wave energy projects
  • large energy storage plants for fast reserve and frequency response.

Ipsa's flexible design means that it is ideally suited for being embedded within, or called from, third party tools. For some examples see custom development.