Peak Shaving Dispatching Strategy Of Power Load Participation System Considering Spot Market Risk

The "dual carbon" policy released by China has further promoted the development of new energy,mainly wind and solar power,but at the same time,it has brought new challenges to the system’s peak shaving.By utilizing the adjustable characteristics of power load and gradually incorporating it into the system’s peak shaving,the system’s peak shaving capacity can be significantly increased.The spot market of electricity,as an economic means to incentivize the participation of electricity load in system peak shaving,can promote the participation of electricity load in peak shaving from an economic perspective.However,due to the stochastic uncertainty of new energy generation,there are certain economic risks in the participation of electricity load in spot market transactions.To reduce this risk,this article proposes a power load participation system peak shaving scheduling strategy that considers spot market risk.Firstly,the mechanism of power load participating in system peak shaving was analyzed.In response to the peak shaving demand of the system after a high proportion of new energy is connected to the grid,the regulation characteristics of large capacity and high load energy load and the regulation characteristics of thermal storage electric load are analyzed.Based on this,the mechanism of power load participating in system peak shaving is elaborated.Secondly,the economic risks of power load participating in system peak shaving in the spot market were analyzed.This risk includes two aspects:firstly,the risk of power load dispatch plan based on new energy prediction deviation.Firstly,analyze the formation mechanism of the initial power load dispatch plan,and then analyze the risk of power load dispatch plan deviation;The second is the spot market economic risk of power load participating in system peak shaving,and it is proposed that there may be extreme risks in the scenario of new energy boom.Based on the above analysis,research is conducted on the power load participation system peak shaving scheduling strategy considering spot market risks.Based on the VaR(Value of Risk)method and extreme value theory and their applicability,a quantitative method for the economic risk of day-ahead spot market transactions involving power load participation in system peak shaving is proposed;Based on this,an optimization framework for peak shaving and dispatching of power load participation system considering spot market risk is constructed,and a two-level dispatching model for peak shaving of power load participation system considering spot market risk is established.The upper model aims to improve peak shaving capacity,and the lower model aims to reduce market risk.Through KKT conditions,the two-level nonlinear model is transformed into a single-layer mixed integer linear programming model and solved;Finally,a power load participation system peak shaving scheduling strategy considering spot market risks is proposed.The final example simulation shows that the proposed scheduling strategy can effectively improve the peak shaving ability of the day-ahead system under the condition of reducing market risk of power load.