Representtive test systems for Swedish distribution networks

This paper describes two electrical distribution systems, Swedish Urban Reliability Test System (SURTS) and Swedish Rural Reliability Test System (SRRTS), which are representative of actual Swedish distribution networks. These test systems aim to serve as a basis for reliability and cost analyses of Swedish distribution networks and for studies of regulation policies. The project was conducted within a research programme of Elforsk, a Swedish industry research association. The challenge has been to make the test systems representative in terms of load, component and customer data as well as network topology. To ensure the similarity of the test systems to actual networks, industry representatives of major Swedish power distribution companies have been an integral part of the development process. This paper shows the result of a validation of the test systems against data compiled by the Swedish Energy Markets Inspectorate. The validation was performed for the reliability indices SAIDI and SAIFI. It was confirmed that the developed test systems are good representatives of actual distribution networks, and thus suitable for further research of distribution networks and for studies of regulation policies.