基于博弈论赋权的电压暂降风险GRA-TOPSIS评估模型

GRA-TOPSIS Evaluation Model of Voltage Sag RiskBased on Game Theory Weighting

针对尚未统筹考虑现有暂降评估指标体系、赋权方法不全面灵活以及暂降风险评估方法应用不完善等问题,提出了一种基于博弈论赋权的电压暂降风险GRA-TOPSIS评估模型。首先,基于正态分布概率密度函数与累计求和方式建立敏感负荷故障率模型;然后,构建兼顾考虑电网侧与用户侧的暂降评估指标体系,采用博弈论思想将主客观权重系数进行集成组合赋权,并根据GRA-TOPSIS评估方法建立节点电压暂降风险评估计算模型。最后,通过实测数据进行验证,结果证明了所提方法的准确性与实用性。

Aiming at the problems that the existing sag evaluation index system has not been considered,the weighting method is not comprehensive and flexible,and the application of the sag risk evaluation method is not perfect,a GRA-TOPSIS evaluation model of voltage sag risk based on game theory weighting is proposed.First,the sensitive load failure rate model is established based on the normal distribution probability density function and the cumulative sum method.Then,a sag evaluation index system considering both the grid side and the user side is constructed,and the subjective and objective weight coefficients are integrated and combined using the game theory idea.According to the GRA-TOPSIS evaluation method,the node voltage sag risk evaluation calculation model is established.Finally,the results are verified by the measured data,which can prove the accuracy and practicability of the proposed method.