Based on the load forecast with fuzzy period and the improved niche genetic algorithm,the peak load regulation considering the wind power transmitted by UHV network in 2015’ wet season mode is researched for Hubei Power Grid according to its power consumption.With the minimum power loss as its goal and the unit ramp rate and system security as its constraints,an optimal dispatch model is established and a peak load regulation scheme of Hubei Power Grid is planed for different proportions of wind power transmitted by UHV network.Simulative result shows that,in case of wind power transmitted by UHV network in 2015’ wet season mode,the peak load regulation ability of Hubei Power Grid is not sufficient and the UHV network should take part in it.Compared with traditional ones,the proposed peak load regulation scheme,on the premise of safe system operation,fully utilizes the peak load regulation capability of thermal and pumped storage units and effectively reduces the net loss.