非确定性滑差的微机自动准同期原理

Control Principles for Microprocessor-Aided Synchronizers on the Uncertainty Condition of the Slip Frequency

通过现场测量与分析,发现待并机组滑差的不确定性或随机性是造成并列时冲击电流过大的重要原因。本文运用随机过程的控制理论,研讨了随机滑差微机自动准同期的工作原理,定义了准确并列率的概念,合理地兼顾了快速并列与准确并列两方面的要求。所研制的装置WZQ-1SH已在现场长期运行,证明本文提出的原理是正确的。

It is considered that the uncertainty condition of the slip frequency is an important cause of the serious impact during synchronizing a giant generator, through a lot of tests done in the power plant. The control principles for microprocessor-aided synchroni-zers and the concurrent consideration given to both availability and precision of the synchronization are discussed in the radom varying slip frequency case. A microprocessor based synchronizer, WZQ-1SH, has been developed and working for a long time to settle the problems.