基于机会约束规划的供电公司最优购电策略

在输电与配电分离的电力市场模式下,供电公司可以作为市场主体从市场联营体或发电公司直接购电来满足用户需求。供电公司的购电决策对其收益有着重要影响。在假定供电公司可以通过长期合约和现货市场组合购电以满足用户需求的前提下,基于机会约束规划方法框架,构造了供电公司计及风险的最优购电决策的数学模型,并用蒙特卡罗仿真方法对其进行求解。计算结果表明,供电公司可以根据自己的风险偏好来确定在合约市场和现货市场购电量的最优分配策略。

Chance-constrained Programming Based Approach to Optimal Purchasing Strategies of Distribution Companies

In a transmission and distribution separated electricity market,distribution companies could purchase electricity from the pool and/or directly from generating companies to meet the demand of end users.The income of distribution companies depends,to a large extent,on the purchasing strategies employed.In the framework of chance-constrained programming,a mathematical model is developed for building optimal purchasing strategies for distribution companies from the spot market and/or by long-term contract with generating companies directly,with the risk concerned well taken into account in an explicit way.The Monte Carlo simulation is used to solve the model.Simulation results demonstrate that distribution companies could confirm the purchasing strategy by their own risk preference.