摘 要：電流互感器在電力系統(tǒng)中應(yīng)用較廣，僅針對應(yīng)用于電能計(jì)量中的電流互感器的檢定校準(zhǔn)過程進(jìn)行分析。在明確與此相關(guān)的名詞述語的基礎(chǔ)上，分析檢定電流互感器的原理方法，建立了測量電流互感器比值誤差和相位誤差的數(shù)學(xué)模型。以0.2S級電流互感器作為例子，對額定電流的1%、5%、20%、100%、120%下數(shù)據(jù)進(jìn)行分析，得出了對應(yīng)的不確定度。
關(guān)鍵詞：電流互感器；比值誤差；相位誤差；數(shù)學(xué)模型；測量不確定度
中圖分類號(hào)：TB971 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1672-4984（2007）04-0020-06
Analysis for current transformers standard
TANG Guo-ming， QIN Fu-xiang， LIU Chong-gao
（National Institute of Measurement and Testing Technology，Chengdu 610021，China）
Abstract: Current transformers are widely used in electric system. In this passage, the authors only analyzed the verification and check procedure of current transformers, which were used in measurement of electricity. On the basis of having defined the related technical terms, they analyzed the method of checking to current transformers and established the mathematical model to measuring the ratio error & phase displacement of current transformers. Take the class 0.2S of current transformers for example, they analyzed the data under rated current 1%、5%、20%、100%、120%，then completed the corresponding measurement uncertainty evaluation.
Key words: Current transformers; Ratio error; Phase displacement; Mathematical model; Measurement uncertainty
