Research On The Evaluation Of Industrial User Demand Response Potential Under New Power Syste

In the context of 30 carbon peak,60 carbon neutral and power system transformation,new energy will enter a rapid development stage,a large number of new energy will be connected to the grid,the traditional power system will gradually be replaced by a new power system containing a high proportion of new energy.However,due to the strong randomness and volatility of wind power,photoelectricity and other new energy generation,relying on traditional thermal power or hydropower alone can no longer meet the requirements of the new power system flexibility.Demand response is able to provide more,more flexible and more economical regulation ability for the power system.Therefore,there is an urgent need to study how to carry out demand response,comprehensively compare the potential of each region and each user to participate in response,promote the active participation of users in demand response,and provide some theoretical support for selecting users for demand response projects.The objective of this paper is to propose a method to effectively assess the potential of industrial users to participate in demand response.The current status of research on demand response and potential assessment is reviewed,the role and characteristics of demand response in the new power system are analyzed and summarized,and the new requirements for demand response potential assessment in the new power system and the necessity of implementing demand response in the new power system are pointed out.Typical industrial industries such as steel industry,non-ferrous metal industry,machinery manufacturing industry and chemical industry are selected to analyze the characteristics of electricity consumption and load characteristics,and on this basis,the factors affecting industrial users’ participation in demand response are further analyzed,including demand response benefits,industrial users’ production types and load types.Based on the previous analysis and elaboration,this paper follows the principles and process of assessment index construction,makes reference to and compares the existing demand response potential assessment index system,and establishes a qualitative assessment index system of industrial users’ demand response potential from four aspects: user load,willingness to participate,intelligence level and economy,including four first-level indicators and 13 second-level indicators.In finding the weights,the subjective weights are determined by the hierarchical analysis method and the objective weights are determined by the CRITIC method.By comparing the weight results of the multiplicative combination assignment method and the additive combination assignment method,the final method of multiplicative combination assignment is determined as the weight determination method of this paper.Based on the weight calculation results,the improved physical element topologizable assessment model is used to calculate the industrial user response potential level.To prove the effectiveness of the qualitative assessment method proposed in this paper,10 industrial users in city A were randomly selected for response potential assessment.The evaluation results prove that the qualitative assessment index system and model constructed in this paper can effectively evaluate the response potential of industrial users,and at the same time,the factors that motivate and hinder industrial users to participate in response can be derived.In order to fit the engineering reality and realize the accurate screening of demand response pilot areas and response users,this paper combines the quantitative demand response assessment model and qualitative assessment model to evaluate the demand response potential of industrial users in a province.The quantitative results indicate that,among the nine cities in a province,City A has the largest response load,and the industrial load that can be responded to in the whole province accounts for 4 % and2.5 % of the industrial user load and total load in the province,respectively.Qualitative results indicate that there are seven industrial customers in City A of a province with response potential under the existing incentive subsidy policy,and the remaining industrial customers have low response potential.When the incentive subsidy is appropriately increased,the response potential of some industrial users will be improved,increasing the subsidy incentive can increase the response potential of industrial users.Finally,the evaluation results were analyzed for 3 levels of application: government,grid,and users.Combined with the analysis results,corresponding suggestions are made for the current implementation of demand response in a province,which provides relevant theoretical support for promoting the further development of demand response in city A of a province.