用数学计算模式检验差动保护比率制动特性及小负荷下差动保护接线的正确性用数学计算模式检验差动保护比率制动特性及小负荷下差动保护接线的正确性 摘要:由于电网日益进展的需要特别是近年来的农网改造,系统中采纳的变压器保护装置多样化,而各个厂家保护装置设置不尽相同,给保护装置定值整定带来一定困难,所以要求试验能更真实的反映运行实际情况
本文通过数学模型计算,模拟实际接线来检验Y/Δ-11 变压器差动保护比率制动特性,从而检查保护装置参数设置是否合理
同时通过数学模型计算还可明确推断小负荷下差动保护接线是否正确
关键词:数学计算;检验; 比率制动;小负荷下的差流 Abstract: due to the needs of the development of power grid becomes more and more especially in recent years, the rural electric reform system used in transformer protection device is diverse, and each manufacturer different protective device Settings, to protection fixed value setting bring certain difficulties, so request test can run more real reflect the actual situation
By mathematical model calculation, this paper simulated the actual wiring to test Y/Δ - 11 transformer differential protection of ratio braki