Design and Realization of AC UHV Corona Loss Monitoring System

摘要: In order to accurately and long-termly measure corona loss of single circuit test line in our country's UHV AC base, research the regularity transmission country, a monitoring system is designed developed. Hybrid type optical electric supply electronic current transformer adopted acquire signals. This method realizes current's ground measurement on safe side. The capacitance voltage (CVT) base used voltage. High precision divide signal secondly. can exactly credibility. Current signals are both transmitted by fiber. Based virtual instrument technology, high multi-channel speed synchronous data acquirement card line's synchronously. sine wave parameter algorithm calculate power-factor angle. According formulation, value calculated out. errors OPDL-16 (Optical Data Link-16) 1000kV CVT measured. After period practical operation, results show that, fulfils accuracy measurement, able realize long-period real-time accurate different climate conditions. meets requirements research.