Research On Flexible Load Participating In Regional Power Grid Dispatching Operation

With the continuous prosperity of social economy,the continuous growth of power demand and the continuous development of power grid technology,flexible load,as a flexible and efficient schedulable load resource,has become one of the important means to alleviate the contradiction between supply and demand side.Therefore,it has important theoretical significance and practical engineering value to carry out the research of flexible load participating in regional power grid dispatching operation.Taking the optimization of pricing strategy of power supply company as the research object,aiming at the differentiation characteristics of diversified flexible load,taking interruptible load and transferable load as typical representatives,this paper deeply analyzes the optimal pricing strategy model of power supply company,and studies the response characteristics of interruptible load and transferable load.Firstly,this paper analyzes the resource characteristics and adjustable potential of different types of load,and gives the classification index to describe the characteristics of flexible load.Then cluster analysis is carried out according to the different load characteristics,which provides load categories with outstanding characteristics,similar attributes and significant distinction for further research on multi type flexible load.Secondly,this paper analyzes the interactive research of interruptible load participating in dispatching,designs the incentive demand response interactive scheme of interruptible load participating in regional power grid dispatching,then gives the interactive scheme of interruptible load considering price preference,establishes the corresponding interactive model and constraint conditions,and establishes the interruptible potential index model and interruptible load index model in the case analysis part.The reliability and practicability of the above model are verified by an example of interactive model.Then,this paper presents the interaction research of transferable load participating in dispatching based on price type demand response mechanism,designs the time of use price scheme of price type demand response of transferable load participating in regional power grid dispatching,studies the real-time price scheme of price type demand response under multi time scales when the transferable load participates in regional power grid dispatching,and gives the application of particle swarm optimization in the part of example analysis.The results of the optimal pricing model solved by the method verify the revenue state of power supply companies and customers based on the price based demand response mechanism.Finally,this paper studies the electric vehicle with special characteristics in the flexible load,designs the vehicle network interactive scheduling scheme according to the load characteristics of the electric vehicle,studies the realization of load balanced distribution by using the vehicle network interactive scheduling,and uses the interior point method to solve the proposed scheduling model,gives the electric vehicle charging and discharging behavior model and cost analysis,so that the flexible load of electric vehicle can better participate in power grid dispatching.