Intelligent Decision Research On Distribution Network Planning Considering Integration Of Distributed Generators

Faced with the tight global energy and environmental constraints, the world energy market is more complex and changing, so the traditional methods of energy producing and consuming are not able to adapt to the current situation. In the new normal, China has been the largest energy producing and consuming country in worldwide. Applying distribute energy to power grid has significant advantages for substituting energy, enhancing energy utilization efficiency, reducing environmental pollution, and optimizing energy structure. Distributed generation is still random and fluctuating, and it will bring a series of challenges to the decisions of distribution network plans considering integration of DG This paper conducted research in this area, and the main results are as follows:This paper firstly discusses the characters of distributed generation and also its impact on distribution network plans, including transient stability of system, accuracy of power grid dispatching and extra cost of the reserve capacity for the power system. Based on them, we divide wind power system by output and employ cluster methods to divide scenes for monthly output. Then combining life cycle and multi-scenes division, this paper build a comprehensive object decision function considering investigate operating cost, extra cost, energy-saving benefit and system reliable cost.Further, combined with the full life-cycle and multi-scene division, this paper established multi-objective function which includes the operational costs, the additional standby costs, energy saving efficiency and system reliability cost. Since there are many parameters needed to confirm in the calculation and selection of judges. Therefore intelligent decision framework DS-MAS will be used to automatically calculate the parameters based on different conditions.At last, on the basis of distribution network planning decisions, to support specific projects, this paper proposes evaluation system of individual projects. In the system using a single project benefits calculated on the basis of supporting the establishment of power projects under certain funding constraints models of priority. This method which takes into account of the financial constraints, planning objectives and relationships of the projects. It has good operability and closer to the actual needs of the project.