With the rapid development of distributed generation technology,a lot of renewable wind and solar power connect to the power system. Due to the random and intermittent characteristics of renewable energy, it brings a big challenge to the security and economical operation of power system. With the limits of climbing speed, non-renewable energy generation units cannot respond quickly to the change in the output of renewable energy generation units. Owing to the advantages of high luminous efficiency and long lifetime, LED lamps get rapid promotion and application in the smart distribution network. Based on the optical and electrical unique properties of LED lamps, the author studies the effects on the power system for a large number of LED lamps connecting to the distributed generation system, and establishing the mathematical model of LED lamp participating in the optimal dispatch of distributed generation system. In order to solve the model, the author uses gradient projection method. Through the SIMULINK simulation, it demonstrates that the algorithm has a fast convergence speed and high precision, and verifies the correctness and feasibility of the algorithm.
Power quality and transient analysis for a utility-tied interfaced distributed hybrid wind-hydro controls renewable energy generation system using generic and multiband power system stabilizers