考虑网损的联营体日前发电竞价模型

从联营体模式下日前电力市场购电成本最小发电计划模型出发,基于发电机组上网电能实际利用率,提出考虑网损的竞价上网发电计划模型.该模型核心是上网电能实际利用率的计算,以直流潮流为基础,引入虚拟网损负荷变量并构造出带有松弛负荷变量的有功不平衡方程雅可比矩阵,一次求解n阶矩阵的转置矩阵,获得各发电机组的上网电能实际利用率.通过IEEE-30节点算例分析表明,此竞价模型较不考虑网损的发电竞价模型,减少了总的发电量,降低了整体购电成本.

Pool model for bidding strategy in day-ahead trade planning considering network loss

From the minimum purchasing cost model in day-ahead power market of pool model and base on generation injecting power actual utilization rates,a novel economic dispatch model which considering network loss is proposed.The key problem of this model is to acquire injecting power actual utilization rates.A pseudo load variable to balance network losses and to construct its corresponding Jacobian matrix is introduced.In the solution power flow process,injecting power actual utilization rates of each generation could be easy obtained with solving the n step transposed matrix.IEEE 30-bus test system is used to demonstrate the proposed method;and simulation results show that it could offer more equitable market clearing results and reduce total purchasing money.