Coordinated Dispatch of Power Generation and Spinning Reserve in Power Systems with High Wind Penetration

摘要

The spinning reserve demand in high wind penetration power systems is increasing significantly due to the stochastic and unpredictable nature of wind power. On the basis of the given reliability index, expected load not supplied ratio (ELNSR), stochastic factors such as unit forced outage rate, forecast error of load demand and wind power output are synthetically considered to deduce a quantized relation between spinning reserve and system reliability demand; the derived quantized relation is then used as a constraint to build a coordinated generation and spinning reserve dispatch model. Simulation results show that the proposed model can effectively quantify system reserve demand and give optimal generation schedule as well as allocation of spinning reserve among thermal units.