集成热工功能的调相机组非电量保护装置设计

Design of non-electricity protection device with integrated thermal engineering function for synchronous condenser

为了将调相机工程中的热工保护与分散控制系统解耦,并进一步提高热工保护的可靠性,需要将热工保护功能迁移至非电量保护装置。本文设计集成热工功能的调相机及变压器非电量保护装置,支持热工开入和非电量开入,可兼容多类信号采集,并针对各类热工信号特点设计了相应的保护动作元件。最后通过加强电源监视及三取二输出进一步提高保护动作的可靠性,降低保护拒动或误动风险。

In order to decouple the thermal protection from the distributed control system and further improve the reliability of the thermal protection, it is necessary to transfer the thermal protection function to the non-electricity protection device. A non-electricity protection device for synchronous condenser and transformer with integrated thermal function is designed, which supports thermal and non-electricity input and is compatible with multiple types of signal acquisition. Corresponding protective action elements are designed according to the characteristics of various thermal signals.Finally, the reliability of protection action is further improved by strengthening power monitoring and taking two outputs from three to reduce the risk of protection rejection or misoperation.