基于带权极小模理想点法的多目标特高压穿越无功规划

特高压交流线路充电功率大,导致其与下级电网存在较大的穿越无功,影响系统经济性与安全稳定性。对此,从技术性与经济性两个维度,构建了以特高压穿越无功最小、投资成本最小为目标的多目标特高压穿越无功规划模型。针对模型特点,采用带权极小模理想点法,将多目标规划问题转化为单目标规划问题,避免了求解多目标规划问题复杂的Pareto前端曲面,简化了问题求解复杂度。最后,以某实际区域电网为例,仿真结果验证了所提模型及其求解方法的有效性。研究成果可为其他区域电网特高压穿越无功规划提供参考。

Multi-objective Ultra-high Voltage Penetration Reactive Power Planning Based on Weighted Minimum-module Ideal-point Method

Due to the great amount of charging reactive power in ultra-high voltage (UHV) AC transmission lines, there exists plenty of penetration reactive power between UHV grids and lower-voltage grids. From the technical and economic dimensions, this paper presented a multi-objective UHV penetration reactive power planning model, whose objective functions included UHV penetration reactive power minimization and investment cost minimization. According to the characteristics of the model, a weighted minimum-module ideal-point method was proposed to simplify the multi-objective planning problem by avoiding Pareto front. Finally, an actual regional power grid was taken as an example, whose results demonstrated the effectiveness of the presented multi-objective planning model and its solution method. The research can provide reference for the UHV penetration reactive power planning in other regions.