摘要
谐波状态估计为电力系统的谐波监控、抑制和治理提供了依据。在同步相量量测装置配置不可观的条件下,引入数据采集与监控系统量测到的谐波有功功率作为量测量,建立基于混合量测的非线性谐波状态估计的灵敏度数学模型,应用牛顿迭代法进行求解。算例分析表明,谐波状态估计的灵敏度数学模型和牛顿迭代法求解有效,混合量测数据能提高系统谐波状态估计的精度。
Harmonic state estimation is an useful tool to provide reference for harmonic monitoring,suppression and treatment in power system.In condition of unobservable phasor measurement unit configuration,harmonic active power measured by supervisory control and data acquisition system is added as a kind of measurement for harmonic state estimation in this paper.The sensitivity model of non-linear harmonic state estimation based on mixed measurements is built.Then,it is solved by Newton iteration algorithm.From the experimental results,it can be concluded that both the sensitivity model and the Newton iteration algorithm applied in harmonic state estimation are efficient,mixed measurements are helpful to improve the accuracy of harmonic state estimation.
出处
《自动化技术与应用》
2013年第11期79-82,91,共5页
Techniques of Automation and Applications
关键词
谐波状态估计
相量量测
混合量测
量测配置
牛顿迭代法
harmonic state estimation
phasor measurement
mixed measurement
measurement configuration
newton iteration algorithm
