基于实时动态载波相位差分技术的输电网功率稳定性判定  

Power Stability Assessment of Power Transmission Grids Based on Real-Time Dynamic Carrier Phase Difference Technology

作　　者：黄绪勇 唐标 秦雄鹏 林中爱 许守东 HUANG Xuyong;TANG Biao;QIN Xiongpeng;LIN Zhong’ai;XU Shoudong(Electric Power Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650012,Yunnan,China;Yunnan Electric Power Technology Co.,Ltd.,Kunming 650012,Yunnan,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650012 [2]云南电力技术有限责任公司,云南昆明650012

出　　处：《电网与清洁能源》2024年第12期65-70,77,共7页Power System and Clean Energy

基　　金：中国南方电网有限责任公司科技项目(GF20220521130001);云南电科院三维激光点云数据纠偏维护项目(056200MS62210003)。

摘　　要：输电网主要承担输送电能的任务,但其功率变化动态性过强,运行稳定性不佳,容易引发电力风险。为精准判定输电网的功率稳定性从而提高电能的使用效率,提出一种基于实时动态载波相位差分技术的稳定性判定算法。利用差分技术并结合K均值聚类方法,挖掘动态数据:输电网数据功率、电流和电压变化的数据,详细标记三者变化位置。从输电网运行的物理和系统变量角度进行分析,计算当电网出现正、负方向的暂态电压变化和无功补偿措施前后功率、电压的实时变化,以及潮流计算法定义全局稳定性的阈值;将检测到的数据与该值对比,完成稳定性判定。实验数据证明:所提方法稳定性判定的精准度较高,收敛效果较好,具有一定的实用价值。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 

分 类 号：TM712[电气工程—电力系统及自动化]