基于灵敏度分析和时域仿真的暂态稳定预防控制优化方法

Optimization method of transient stability preventive control based on sensitivity analysis and time domain simulation

根据临界切除时间灵敏度将暂态稳定约束条件线性化,简化了考虑暂态稳定约束的最优潮流(TSCOPF)问题的求解过程,为暂态稳定预防控制优化问题提供了一种新的解决方案。针对大系统临界切除时间灵敏度计算费时的实际问题,采用线路有功功率灵敏度筛选待调发电机的方法和并行计算技术以提高计算效率。WSCC 9节点系统标准算例和SGCC 9 177节点电网算例的仿真结果表明,所提方法具备良好的优化效果和工程实用性。

A new solution is provided for optimizing the transient stability preventive control by linearizing the transient stability constraints according to CCT（ Critical Clearing Time） sensitivity,which simplifies the solving process of TSCOPF（ Transient Stability Constrained Optimal Power Flow） problem. To solve the time-consuming problem of calculating the CCT sensitivity of a large-scale power system,the standby generator screening method with the line active power sensitivity and the parallel computing technology are adopted to improve the calculation efficiency. Simulative results of the WSCC 9-bus benchmark system and the SGCC 9 177-bus power grid show that the proposed methd has good optimization effect and engineering practicability.