關于故障錄波裝置PT斷線告警邏輯的優化
林家成，王宇鵬
（南方電網超高壓輸電公司柳州局，廣西 柳州 545006）
摘 要：現有故障錄波裝置的PT 斷線邏輯只有在某一相或兩相有壓而剩余其他相無壓時報PT 斷線告警，當出現空開脫扣或電纜并接處斷開等情況會造成三相電壓實時數據丟失，則錄波裝置不發出PT 斷線告警。提出一種優化的錄波裝置PT 斷線告警的邏輯，該方案通過引入各種輔助判據量對原有邏輯進行優化，從而消除記錄盲區，使運維人員及時發現并處理錄波裝置所采電壓量的異常。
關鍵詞：故障錄波；PT 斷線告警；優化邏輯
中圖分類號：TM711 文獻標識碼：B 文章編號：1007-3175(2016)08-0033-03
Optimization of Potential Transformer Disconnection
Alarm Logic in Fault Wave-Recording Device
LIN Jia-cheng, WANG Yu-peng
（Liuzhou Bureau of China Southern Power Grid Extra-High Voltage Power Transmission Company, Liuzhou 545006, China）
Abstract: The potential transformer (PT) disconnection logic of existing fault wave-recording device will give an alarm of PT disconnection only when one phase or two-phase have voltage while the remaining other two-phase or one phase have non- voltage. When circuit breakers appeared tripping or cable junction disconnected, the three-phase voltage real-time data lost to cause the wave-recording device not to send out an alarm of PT disconnection. This paper proposed a kind of optimized PT disconnection alarm logic of fault wave-recording device. This scheme introduced a variety of auxiliary criterion to optimize the original logic, so as to eliminate the blind zone of record, which makes the operation and maintenance personnel timely discover and dispose the abnormal voltage sampled by the wave-recording device.
Key words: fault wave-recording; potential transformer disconnection alarm; optimized logic
