一起數(shù)字化電能計量系統(tǒng)故障現(xiàn)場排查
程含渺1,2,夏國芳1,2,梁凱3
(1 國網(wǎng)江蘇省電力有限公司電力科學研究院,江蘇 南京 210019;2 國家電網(wǎng)公司電能計量重點實驗室,江蘇 南京 210019;
3 國網(wǎng)無錫供電公司,江蘇 無錫 214101)
摘 要:介紹了一起數(shù)字化電能計量系統(tǒng)故障,依照現(xiàn)場排查步驟,逐步分析故障原因,發(fā)現(xiàn)故障是由光纖模式不匹配導致。檢查變電站其他光纖通信線路,發(fā)現(xiàn)同樣可能存在不同模式光纖混用的情況,提出了除長距離傳輸場合,全站應使用多模光纖,統(tǒng)一光纖接口,盡量減少或不使用接口轉換器等防范措施,為智能變電站運維工作提供參考。
關鍵詞:智能變電站;數(shù)字化電能計量;光纖;通信故障
中圖分類號:TM933.4 文獻標識碼:B 文章編號:1007-3175(2018)02-0042-03
Field Investigation About a Failure of Digital Metering System
CHENG Han-miao1,2, XIA Guo-fang1,2, LIANG Kai3
(1 State Grid Jiangsu Electric Power Co., Ltd, Electric Power Research Institute, Nanjing 210019, China;
2 State Grid Key Laboratory of Electrical Power Metering, Nanjing 210019, China;
3 State Grid Wuxi Electric Power Supply Company, Wuxi 214101, China)
Abstract: Introduction was made to a failure of digital energy metering system. According to the filed investigation procedure, this paper analyzed the failure cause step by step and discovered that the mismatch optical fiber caused the failure. Other optical fiber communication lines in substation were checked, so as to find that there possibly existed different modes of fiber mixing. This paper proposed the precautionary measures that the multimode fiber should be used in the whole substation, the fiber interface should be unified and the interface converter should be used less even none, except for the long-distance transmission occasion, which provides references for the operation and maintenance of smart substation.
Key words: smart substation; digital electrical power metering; optical fibre; communication failure
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