基于CVaR的供电公司现货市场购电优化决策模型

由于实时电价的剧烈波动和用电量的易变性,供电公司在电力市场交易中面临双侧交易风险,为合理规避市场交易风险,供电公司制定电力交易决策应以风险计量为基础.在假设用电需求为随机变量的基础上,本文利用条件风险价值(CVaR)为风险计量指标,以供电公司利润的CVaR值最大化为目标,构建了供电公司在现货市场的购电优化决策模型,并给出了模型的解析解;同时,分析了供电公司因为购电不足而导致给用户的赔偿额度以及供电公司风险厌恶程度对最优购电量的影响.算例验证了所提出模型的有效性和适用性,表明本模型对供电公司的购电策略具有一定的参考价值和指导作用.

Spot Market Optimal Decision-Making Model of Purchase Electricity for Power-Supplying Company Based on CVaR Model

For spot price's volatility and demand's movement,power supplying company faces double-side risk from in electricity market transaction.To hedge risk,power-supplying company should make transaction decision considering risk measurement.Suppose electricity demand is random variable,the paper takes the conditional value-at-risk(CVaR) as risk measurement index to construct the optimal model of electricity purchase in the spot market for power-supplying company and provides the analytical solution to the model ...