基于参数规划的电网运行安全经济协调评估方法

Evaluation Method for Security-economy Coordination for Power Grid Operation Based on Parameter Planning

提出一种基于参数线性规划的安全经济协调曲线生成方法,对电网运行状态进行定量评估。该方法分别将线路负载率和总购电成本作为系统运行的安全指标和经济指标,通过对电网运行优化模型中约束右端的含参量进行灵敏度分析,得到安全经济协调曲线,用以描述在给定条件下的电网最优运行状态,以及定量给出安全性与经济性之间的协调成本,同时还揭示了电网安全经济运行的可优化空间。

A kind of generation method for security-economy coordination curve based on parameter linear planning is proposed to carry out quantitative evaluation on power grid state.This method takes line load rate and total electricity purchasing cost as security index and economy index for system operation.By analyzing sensitivity of containing parameters at the constraint right end in the power grid operation optimization model,security-economy coordination curve is obtained to describe optimal operational state of the power grid under given conditions,quantificationally provide coordination cost for security and economy and reveal optimizable space for safe and economic operation of the power grid.