engleski

Connection of Distributed Generation to Distribution Networks:Recommendations for Technical Requirements, Procedures and Agreements in SEE

The last two decades have seen an unprecedented development of distributed renewable energy resources. Many countries have adopted a variety of incentives (feed-in tariffs, green certificates, direct subsidies, tax exemptions etc.) to promote renewable energy and distribution system operators are under increasing pressure to respond to an often excessive demand for access to the network, while at the same time ensuring network stability and continuity of service. This study will assist the USAID / USEA Distribution System Operator Security of Supply Working Group member utilities to develop rules and requirements to properly evaluate and integrate new distributed renewable energy generation connection requests. The scope of the study is to: • Survey the current rules governing the connection of new distributed generation in the DSO Working Group member countries (Albania, Bosnia & Herzegovina, Croatia, Kosovo, Macedonia and Serbia). • Survey the current grid/distribution codes regarding generators (and/or other “equivalent” documents) of the DSO Working Group member countries. • Review the current connection criteria (plant and system standards) applied in the countries for distributed generation including: o steady- state and short-circuit current constraints o power quality o voltage profile, reactive power and voltage control o contribution to ancillary services o protection aspects o islanding and islanded operation o system safety • Analyze the technical evaluation practices used for reviewing new connections and assessing the impact on the capacity capabilities of the grid. • Analyze the performance obligations of distributed generation in the DSO Working Group member countries. • Perform a technical assessment and comparative analysis of the different approaches in the region. • Select a U.S. distribution system operator and provide an overview of their rules/requirements for integrating new distributed generation and their applicability in Southeast Europe. • Conduct a training workshop on distributed generation interconnection best practices. • Review opportunities to improve and harmonize connection rules in the region. TASK 1: Distributed Generation Connection Procedure Review • Identify the main issues that should be considered with the integration of distributed generation on the distribution network in southeast Europe • Prepare, harmonize and distribute questionnaires to Working Group DSOs covering all relevant issues regarding distributed generation connection • Prepare detailed information for each participating DSO related to their distributed generation connection procedures (e.g. issuing the connection application, obligations, time span, validity period of the connection , denial of connection, user constraints), • Prepare detailed information for each participating DSO related to rules and codes (i.e. technical aspects), and • Prepare detailed information for each participating DSO related to connection tariffs and costs governing connection of distributed generation.

distributed generation, connection, distribution networks

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