CAJ | 학술논문

针对配电变压器状态量数据较少，开展状态评估工作困难的情况，提出了一种基于最大特征值筛选的配电变压器状态评估方法。利用最大特征值法分析影响配电变压器的各状态量，得到评估配电变压器的核心状态量集合。在利用核心状态量进行状态评估得到初始评估结果的基础上，通过求取非核心状态量的灵敏度，修正初始评估结果，从而得到配电变压器状态评估的最终结果。通过对油浸式配电变压器评估实例的结果分析表明：所提方法仅需要考虑核心状态量和有变化的非核心状态量，既减少了对数据的需求，又保证了评估结果的准确性，是有效和实用的。
침대배전변압기상태량수거교소，개전상태평고공작곤난적정황，제출료일충기우최대특정치사선적배전변압기상태평고방법。이용최대특정치법분석영향배전변압기적각상태량，득도평고배전변압기적핵심상태량집합。재이용핵심상태량진행상태평고득도초시평고결과적기출상，통과구취비핵심상태량적령민도，수정초시평고결과，종이득도배전변압기상태평고적최종결과。통과대유침식배전변압기평고실례적결과분석표명：소제방법부수요고필핵심상태량화유변화적비핵심상태량，기감소료대수거적수구，우보증료평고결과적준학성，시유효화실용적。
According to the problems that there are less distribution transformer state variables and the condi-tion assessment of distribution transformer carry out difficultly,a method of distribution transformer condition assessment based on maximum Eigen-value selection is presented.Through analyzing the principle of every state variables of distribution transformer by use of the maximum Eigen-value approach,the core state collec-tion of assessing the distribution transformer is formed and the state variables dimensionality is reducing.The initial results of distribution transformer condition assessment are obtained by using core state variables.Then through calculating the sensitivity of the non-core state variables to the evaluation results,the initial assess-ment results are modified to ensure more accurate results.A condition assessment instance of distribution transformer shows that this method not only reduces the demand for data,but also ensures accuracy of the re-sults using the sensitivity correction.The results verify the validity of the method.