Risk Assessment Of Psc Under Peak-Valley Tou Price Policy Based On Cvar Method

The uncertainty of electricity price, such as the volatility in the spot market and the influence of the peak-valley time-of-use (TOU) electricity price on the load, are important factors in the loss of risk of electricity purchase and sale to power sales companies (PSC). In order to evaluate the impact of the above two factors on the risk loss of the PSC, this paper establishes a function for measuring the conditional risk loss of PSC based on the conditional value at risk (CVaR) theory considering the peak-valley TOU price. The established model considers both the price volatility of the electricity purchase side and the implementation of the TOU price policy, the demand price elasticity is used to obtain power consumption during peak, flat and valley periods respectively. The proposed model has been verified by the case studies. The results show that the implementation of the peak-valley TOU price policy can effectively reduce the risk of PSC and increase their revenue, and PSC can choose the appropriate price spread ratio or quantity to purchase to avoid risk.