计及PMU量测的分步线性状态估计模型
发布时间：2018-09-03 20:06
【摘要】：提出一种基于广域量测系统(wide area measurement system,WAMS)和数据采集与监控(supervisory control and data acquisition,SCADA)系统混合量测的电力系统状态估计方法,该方法充分利用相量测量单元(phasor measurement unit,PMU)量测方程为线性方程的特点,将SCADA量测方程分解为两步线性化方程,并将PMU量测数据中的电压幅值平方、电流幅值平方和相角量测分别添加到2个线性化方程中,从而实现PMU和SCADA混合量测状态估计的非迭代计算,提高了计算效率。通过IEEE标准系统和波兰电网仿真算例,验证了所提方法的有效性。
[Abstract]:A power system state estimation method based on hybrid measurements of wide area measurement system (WAMS) and supervisory control and data acquisition (SCADA) systems is proposed. The method makes full use of the characteristics of the phasor measurement unit (PMU) measurement equation as a linear equation. The SCADA measurement equation is decomposed into two-step linearization equations. Voltage amplitude squared, current amplitude squared and phase angle measurements in PMU measurement data are added to the two linearization equations respectively. The non-iterative calculation of PMU and SCADA mixed measurement state estimation is realized and the computational efficiency is improved. The validity of the proposed method is verified by a real example.
【作者单位】： 河海大学能源与电气学院;国网电力科学研究院;
【基金】：国家自然科学基金项目(51107032,61104045,51277052) 国家电网公司科技项目(考虑通信信息系统风险的电网安全稳定防御关键技术研究)~~
【分类号】：TM933.31
[Abstract]:A power system state estimation method based on hybrid measurements of wide area measurement system (WAMS) and supervisory control and data acquisition (SCADA) systems is proposed. The method makes full use of the characteristics of the phasor measurement unit (PMU) measurement equation as a linear equation. The SCADA measurement equation is decomposed into two-step linearization equations. Voltage amplitude squared, current amplitude squared and phase angle measurements in PMU measurement data are added to the two linearization equations respectively. The non-iterative calculation of PMU and SCADA mixed measurement state estimation is realized and the computational efficiency is improved. The validity of the proposed method is verified by a real example.
【作者单位】： 河海大学能源与电气学院;国网电力科学研究院;
【基金】：国家自然科学基金项目(51107032,61104045,51277052) 国家电网公司科技项目(考虑通信信息系统风险的电网安全稳定防御关键技术研究)~~
【分类号】：TM933.31
【参考文献】
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