Research Of Optimum Operation Strategy For Distributed Generation In Active Distribution System

Concerns over environmental pollution and energy shortage have driven the rapid development of power generation technology,which puts forward a tough new demand for a distribution network to accept renewable energy.Through the optimization of controllable units?ADS can manage the power flow of network effectively.However,because of'correlation of charge and discharge state in a scheduling cycle of SD and the power fluctuation of intermittent renewable energy generation,the optimal scheduling strategy for ADS is complexity.The research on optimal scheduling strategy for ADS is of great value and significance.Firstly,analysis the status quo of distribution network optimal stressed economy and on the basis of the adjustable outputs of distributed generation.The optimal scheduling model is established with considering voltage diviation and economic operation.Secondly,Improved harmony search algorithm by using variable dimension harmony memory and initialize the harmony memory by uniform distribution.The IHS algorithm is proposed to solve the optimal scheduling strategy of ADS.Third,faced with obj ective reality of distribLuted wind farms access to networkf the optimal scheduling model is established with considering voltage diviation and high penetration of wind power.And the improved harmony search algorithm is used to solve the optimal scheduling model,Finally,the IEEE33 nodes in typical distribution system demonstrates the validity of the proposed optimal scheduling model and the IHS algorithm for ADS.And the use of field data in a distributed exemplary wind farm simulation test scheduling strategy.Case simulation shows that the IHS algorithm has a better convergence speed and search ability than the HS algorithm,meanwhile,the optimal scheduling strategy of ADS is correct and effective to give day ahead optimal dispatch of active distribution system.