Dynamics Of Power Demand Response Benefits Under New Energy Access

With the reform of the new power system,China’s renewable energy sources such as wind and solar power have been developed rapidly.Due to the volatility and randomness of distributed power generation,in the process of increasing the scale of renewable energy generation,structural problems such as wind and light abandonment,system operation imbalance and energy supply shortage have arisen,especially the impact of extreme weather conditions such as drought and high temperature on power supply and demand,which makes the peak-valley difference of power grid load widen and the quality of power supply decline.In response to the above problems,demand response,as a means of intelligent interaction between power users and the grid,fully exploits demand-side resources,which is conducive to the balanced consumption of renewable energy in the power system and realizes the balance of power supply and demand.In this paper,based on the existing research on power demand-side benefit assessment,demand response is the main content of the study,and the system dynamics approach is applied to construct the demand response benefit model considering the cost of demand response resources access.Firstly,indicators are selected from the perspective of power system generation side,and the model of power supply side cost and energy storage operation under wind power access is established by studying thermal power module,wind power module,loss module and energy storage module.The model takes generation cost as the core,and explores the impact of different ratios of new energy access on system balance,and reasonably optimizes the allocation of energy storage resources.Secondly,the construction of demand response benefit model is carried out considering the cost of demand response resource access.From the perspective of the flexibility of demand-side resources and the benefits obtained by the implementer,the key factors that affect the cost and benefits are selected to analyze the new energy module,the user-side benefits module and the environment module according to the process of multiple parties involved in the implementation of the main body.Finally,a multi-participant benefit assessment model for the integration of EV,RES and demand response is established,and scenarios are set up to analyze the impact on the benefits of implementing demand response by selecting key factors with different parameter ranges in three aspects: new energy access,customer modules and electricity price impact.The results show that all participating parties gain profit through the implementation of demand response and influence each other,among which the proportion of new energy access has the most significant effect on the development of power demand-side response and has great potential for carbon emission reduction.This study is conducive to grid companies and power generation enterprises in the process of demand response,to improve their own benefits to weigh the impact factors,and provides new ideas for participating in system operation and scheduling.