冷却器全停信号在大型电力变压器保护上的合理应用

The Rational Application of the Radiators' Total-stop-signal in Large Power Transformer Protection

随着电力系统的发展,变压器的单台容量逐年增大,保护变压器的运行安全越加重要。目前,惯例用风冷全停信号来保护变压器。这里分析该信号在大型变压器保护上的应用,找出它与环温、负荷等运行参数的关联,供设计变压器保护参考。

With the development of power system, the capacity of a single power transformer becomes larger and larger, and hence the protection of transformer becomes more and more important. Recently total-stop-signals conventionally are being used for the protection of power transformer. Here analysis on the application of these signals in the protection of large power transformer is made. The relationship between these signals and other running parameters, e.g. the load and the ambient temperature, is drawn out for the design of transformer protection.