【摘要】 介绍了STS的拓扑结构和工作原理,详细阐述了滑动窗口模型有效值法、三相绝对值之和法和dq变换法三种断电快速检测方法的工作原理和优缺点。在此基础上,提出了一种dq变换法和滑动窗口模型有效值法相结合的新的断电快速检测方法,dq变换法为主检测,滑动窗口模型有效值法作为后备检测,同时保证了断电检测的快速性和准确性。研制了一台120 k VA实验样机并进行了验证实验,实验结果验证了理论分析的正确性。更多还原

【Abstract】 Static transfer switch(STS) topology and working principle were introduced. Three kinds of power rapid detection method, sliding window RMS method, absolute value of the three phase method and dq transform method,were presented and advantages and disadvantages of the above three method were discussed. On this basis, a new STS power cut fast detection method with dq transform method and sliding window RMS method combination was proposed. dq transform method is the main detection while sliding window RMS method as a backup detection,ensuring rapid and accurate detection performance. STS experimental prototype with 120 k VA capacity was developed. Experimental results verify the theoretical analysis.更多还原