具有分布式发电和可中断负荷选择的配电公司能量获取模型

基于分布式发电机(distributed generation，DG)和可中断负荷(interruptible load，IL)，建立配电公司(distribution company，Disco)在竞争的日前市场下能量获取模型。假设各发电公司(generation company，Gencos)和其他Disco的费用函数能根据历史数据或一些评估者提供的方法得到，各Disco之间的竞争用一个两层优化问题描述，外层子问题代表Disco的优化决策，目标为自身利润最大化；里层子问题为独立系统运行人(independent system operator，ISO)考虑安全约束的能量出清优化问题，目标为最少化购电成本及中断补偿费用。非线性互补方法(nonlinear complementarity method，NCM)及改进的莱温柏杰-马夸德(Levenberg-Marquard，LM)算法用来求解该模型。一个8节点算例验证模型和方法的有效性，同时也分析DG及IL在输电阻塞中的作用。

An Energy Acquisition Model for a Distribution Company With Distributed Generation and Interruptible Load Options

Based on the distributed generation (DG) and the interruptible load (IL), a distribution company (Disco) energy acquisition model in a competitive day-ahead electricity market was designed. Assuming the cost information for individual generation companies (Gencos) and Discos is known according to historical data and some estimators, the Discos' energy acquisition strategy is modeled as a bi-level problem with the upper sub-problem representing individual Disco and the lower sub-problem representing the independent system operator (ISO). The upper sub-problem maximizes the individual Disco's revenue, and the lower sub-problem solves the ISO's market clearing problem with the objective of minimizing the payments for generating firms and the compensation for load curtailment. The bi-level problem was solved by a nonlinear complementarity method (NCM) and an inexact Levenberg-Marquard (LM) algorithm. An 8-bus system was employed to illustrate the proposed method and algorithm. In particular, the role of DG and IL to alleviate congestion was analyzed in the example.