一起換流站主時鐘系統時間異常影響分析
湯安琪,榮軍
(中國南方電網超高壓輸電公司柳州局,廣西 柳州 545026)
摘 要:針對一起換流站GPS 時間同步系統主時鐘異常告警事件,基于GPS 對時原理,現場利用整套備件重新搭建臨時試驗系統,分析了主時鐘故障原因及其導致直流雙極閉鎖的風險,通過邏輯梳理及仿真試驗,研究了兩站直流控制保護系統對時異常及各套直流控制保護系統對時異常對直流系統的影響,并提出相應措施,確保變電站安全運行。
關鍵詞:主時鐘系統;時間異常;影響分析;建議措施
中圖分類號:TM631 文獻標識碼:B 文章編號:1007-3175(2017)11-0041-04
Time Abnormal Impact Analysis of a Case of Master Clock System in Convertor Station
TANG An-qi, RONG Jun
(Liuzhou Bureau, China Southern Power Grid EHV Power Transmission Company, Liuzhou 545026, China)
Abstract: In allusion to an abnormal master clock alarm event of global position system (GPS) time synchronization in the convertor station, based on the GPS timing principle, the interim trial system was constructed again with a complete set of replacement part on site. This paper analyzed the reason of the master clock fault and its generating risk of direct current (DC) bipolar block. Via logic analysis and simulation, this paper researched on the timing abnormity of two-station DC control and protection system and its impact on the DC system, and proposed the corresponding measures to guarantee the safe operation of transformer substation.
Key words: master clock system; clock fault; impact analysis; suggestions and measures
參考文獻
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