某小电厂三次全厂性停电事故的分析

大多数小电厂一次设备相对薄弱，存在一次接线复杂、保护配置不到位等问题。在保护整定值计算上配合难度较大，结合多年小电厂保护整定计算的工作经验，以阳光电厂3次全厂停电事故为案例，从保护定值的角度，通过理论分析提出了补救方案，能够保证在故障情况下，即使与系统解列也不致造成全厂失电。为同类型问题解决方案的制定提供了参考。

Several Questions that Should be Noticed in Setting Calculation of 220kV Transformer Protection Device

Many small power plants have weaker equipments,exist some problems like complex wire connection,inappropriate protection schemes and etc,also have bigger cooperating difficulty in protecting the setting calculation.Combined with some experience in protecting the setting calculation of the small power plant,and taking the three-time whole plant losing power as a case,this paper proposes remedial measure through theoretical analysis from the protection of setting calculation angle,which ensures that under bre...