Wind power impact on system operations and planning

With the emission reduction scheme introduced, increasing number of wind farms have been planned and/or installed in many countries. In this paper, issues with wind power connection to the existing power grid are discussed, with particular emphasize on system operations and planning aspects. In addition to power system analysis, implications of wind power impacts on the electricity market operations are also discussed. From power system operations, wind power introduces stability and control challenges which are reflected in frequency control and voltage control ancillary services in a market environment. From system planning point of view, the increasing number of wind generation connection requests from generators requires a more systematic approach toward system studies on the connection impact on transmission system planning. The research presented in this paper focus on the wind power practice in Hong Kong and Australia. Case studies based on data from Australia and Hong Kong are given in this paper to highlight some of the issues and methodologies relevant to wind power impact studies. Issues on wind power impact on system operations and planning (general discussion paper, key words: wind power optimal dispatch with other generating resources, wind forecast utilization, network frequency control ancillary services, voltage control ancillary services, TAS example, HK example; key techniques: operational schemes, optimization methods, security constraints, impact on market - constraint impact; network connection options analysis.