The power transmission grid primarily undertakes the task of transmitting electrical energy,but its dynamic power fluctuations are too strong,leading to poor operational stability and an increased risk of power incidents.Therefore,the power stability of the power transmission grid should be assessed regularly to improve the use efficiency of electric energy.To accurately assess the power stability of the transmission grid and thereby improve the efficiency of electrical energy use,a stability assessment algorithm based on real-time dynamic carrier phase difference technology is proposed.By utilizing differential technology combined with the K-means clustering method,dynamic data such as power,current,and voltage changes in the transmission grid data are mined,with detailed markings of the locations of these changes.An analysis is conducted from the perspective of the physical and system variables of the transmission grid operation,calculating the real-time changes in power and voltage before and after transient voltage changes in positive and negative directions,as well as reactive power compensation measures,and defining the threshold for global stability using the power flow calculation method when transient voltage changes in positive and negative directions occur in the power grid,and defining the threshold value of global stability by power flow calculation method.The detected data is compared with the value to complete the stability determination.The experimental data proves that the proposed method has a high degree of precision in stability assessment,good convergence effects,and possesses practical value.
关键词
实时动态载波/相位差分技术/坐标转换法/潮流计算/暂态电压/无功补偿
Key words
real time dynamic carrier/phase difference technology/coordinate transformation method/power flow calculation/transient voltage/reactive power compensation
维普
万方数据