Due to the different data rates of the sensors and communication delays in the radar netting, the research of the asynchronous multisensor data fusion problem is more practical than that of the synchronous one. Throug...Due to the different data rates of the sensors and communication delays in the radar netting, the research of the asynchronous multisensor data fusion problem is more practical than that of the synchronous one. Through discussing the sequential approach, which is the classical asynchronous multisensor data fusion algorithm, a new algorithm based on distributed computation structure is proposed. The new algorithm can meet the requirement of real-time computation of netting fusion system, and is more practical for engineering compared with the classical sequential approach. Simulation results show the validity of the presented algorithm.展开更多
云南异步联网后出现的超低频振荡现象长期影响着电力系统安全稳定运行,解决和缓解这一问题的首要任务是进行超低频振荡辨识,因此对基于矩阵束法的超低频振荡识别方法进行了研究。首先详细分析了常用的超低频振荡模态识别手段,然后基于...云南异步联网后出现的超低频振荡现象长期影响着电力系统安全稳定运行,解决和缓解这一问题的首要任务是进行超低频振荡辨识,因此对基于矩阵束法的超低频振荡识别方法进行了研究。首先详细分析了常用的超低频振荡模态识别手段,然后基于超低频振荡的特点,在基本矩阵束算法的基础上进一步提出了可用于广域超低频震荡识别的基于主成分分析定阶的改进矩阵束算法,最后在相同算例条件下,分别与ITD(Ibrahim time domain)方法和自回归滑动平均模型方法进行时域仿真校核和比较,仿真结果证明了所提出方法的有效性和准确性。展开更多
为应对电网结构日趋复杂背景下短路电流超标问题,广东电网考虑采用背靠背柔性直流(Voltage Source Converter based High Voltage Direct Current,VSC-HVDC)实现东西部异步联网方案。为充分保证异步联网后电力系统运行调控的安全性与可...为应对电网结构日趋复杂背景下短路电流超标问题,广东电网考虑采用背靠背柔性直流(Voltage Source Converter based High Voltage Direct Current,VSC-HVDC)实现东西部异步联网方案。为充分保证异步联网后电力系统运行调控的安全性与可靠性,研究柔直控制方式对系统严重故障稳定性及第三道防线的影响。首先研究了柔直换流器的工作原理,然后分析了VSC-HVDC系统在机电暂态BPA中的控制方式,最后以深圳电网为仿真算例进行实证分析,对比分析得到不同柔直控制方式对电网稳定性的影响。展开更多
文摘Due to the different data rates of the sensors and communication delays in the radar netting, the research of the asynchronous multisensor data fusion problem is more practical than that of the synchronous one. Through discussing the sequential approach, which is the classical asynchronous multisensor data fusion algorithm, a new algorithm based on distributed computation structure is proposed. The new algorithm can meet the requirement of real-time computation of netting fusion system, and is more practical for engineering compared with the classical sequential approach. Simulation results show the validity of the presented algorithm.
文摘云南异步联网后出现的超低频振荡现象长期影响着电力系统安全稳定运行,解决和缓解这一问题的首要任务是进行超低频振荡辨识,因此对基于矩阵束法的超低频振荡识别方法进行了研究。首先详细分析了常用的超低频振荡模态识别手段,然后基于超低频振荡的特点,在基本矩阵束算法的基础上进一步提出了可用于广域超低频震荡识别的基于主成分分析定阶的改进矩阵束算法,最后在相同算例条件下,分别与ITD(Ibrahim time domain)方法和自回归滑动平均模型方法进行时域仿真校核和比较,仿真结果证明了所提出方法的有效性和准确性。
文摘为应对电网结构日趋复杂背景下短路电流超标问题,广东电网考虑采用背靠背柔性直流(Voltage Source Converter based High Voltage Direct Current,VSC-HVDC)实现东西部异步联网方案。为充分保证异步联网后电力系统运行调控的安全性与可靠性,研究柔直控制方式对系统严重故障稳定性及第三道防线的影响。首先研究了柔直换流器的工作原理,然后分析了VSC-HVDC系统在机电暂态BPA中的控制方式,最后以深圳电网为仿真算例进行实证分析,对比分析得到不同柔直控制方式对电网稳定性的影响。
