【摘要】：隨著國家電網(wǎng)公司集約化管理政策的推行,計量設(shè)備檢定工作逐步向省級計量中心集中,檢定任務(wù)日益繁重,這使得自動化檢定系統(tǒng)的建設(shè)備受關(guān)注。電能表和用電信息采集終端作為重要的電力計量設(shè)備,同時也是自動化檢定系統(tǒng)的主要檢定對象,其計量準(zhǔn)確性至關(guān)重要,因此自動化檢定的基本誤差測量精度問題不容忽視,研究分析自動化檢定系統(tǒng)的測量精度及校準(zhǔn)方案具有重大的理論和工程意義。論文介紹了電能計量設(shè)備自動化檢定系統(tǒng),其通過對被檢計量設(shè)備的外形尺寸進(jìn)行分類,構(gòu)建基本檢定單元,設(shè)計出二表位與六表位承載托盤、移載機(jī)器人,并利用RFID識別計量設(shè)備類別,以進(jìn)入不同的檢定流程,突破了計量設(shè)備尺寸、檢定流程不同的瓶頸,實現(xiàn)了七種計量設(shè)備的兼容式檢定,包括單相電能表、三相直接接入式電能表、三相經(jīng)互感器接入式電能表、采集器Ⅰ型、集中器Ⅰ型、集中器Ⅱ型及專變采集終端Ⅲ型。論文分析了三相四線直接接入式電能表檢定數(shù)據(jù),發(fā)現(xiàn)個別基本誤差嚴(yán)重超出最大允許誤差限值,并利用格拉布斯準(zhǔn)則進(jìn)行粗大誤差判別,結(jié)果表明嚴(yán)重越限的基本誤差可視為粗大誤差剔除。針對傳統(tǒng)的基本誤差計算方案無法完全規(guī)避粗大誤差影響的問題,提出了基于格拉布斯準(zhǔn)則的新型基本誤差計算方案。論文設(shè)計了單相電能表、三相四線直接接入式電能表與三相四線經(jīng)互感器接入式電能表自動化檢定與人工臺檢定的對比實驗,發(fā)現(xiàn)自動化檢定與人工臺檢定結(jié)果差值呈現(xiàn)差值偏負(fù)現(xiàn)象。以三相四線直接接入式電能表的檢定數(shù)據(jù)為分析樣本,從檢定接線原理上分析了差值偏負(fù)現(xiàn)象,并設(shè)計接觸電阻對基本誤差測量值影響實驗。通過理論和實驗分析,得到自動化檢定臺體的自動壓接裝置與外部聯(lián)接導(dǎo)線的接觸電阻偏大時,會導(dǎo)致自動化檢定基本誤差結(jié)果偏負(fù)的結(jié)論,且接觸電阻越大,偏負(fù)現(xiàn)象越嚴(yán)重。并針對性地提出了降低接觸電阻的校準(zhǔn)措施。
[Abstract]:With the implementation of the intensive management policy of State Grid Company, the verification of measuring equipment is gradually concentrated in the provincial metrology center, and the task of verification is increasingly heavy, which makes the construction of automatic verification system more and more concerned. As an important power metering equipment, the electric energy meter and the terminal of electric information collection are also the main verification objects of the automatic verification system. The accuracy of the measurement is very important, so the measurement accuracy of the basic error of the automatic verification can not be ignored. It is of great theoretical and engineering significance to study and analyze the measurement accuracy and calibration scheme of automatic verification system. This paper introduces the automatic verification system of electric energy metering equipment. By classifying the shape and size of the metering equipment, it constructs the basic verification unit, designs the carrying tray of two and six meters, and the robot of moving load. Using RFID to identify the type of measuring equipment, to enter into different verification process, to break through the bottleneck of measuring equipment size and verification process, and to realize compatible verification of seven kinds of metering equipment, including single-phase watt-hour meter, Three-phase direct access watt-hour meter, three-phase transformer connected watt-hour meter, collector type 鈪，

本文編號：2166649