小型核电接入孤立电网的稳定分析

Analysis of the Stability of Connecting a Smart Nuclear Power Plant to an Isolated Power Grid

以某工业园区孤立小电网为例,模拟机组“N-1”故障和核电机组出线三相短路故障,对小型核电接入该电网后的稳定情况进行仿真分析,建议小型核电接入孤立小电网后采取增加系统旋转备用容量、核电机组分散接入和提高控制保护速动性的综合措施。

Taking an isolated power grid at a certain industrial park as example,simulated analyses are done on the stability of the power grid the connection of the smart nuclear power plant,which simulates the scenarios of"N-1"falts of nuclear power units and three-phase short circuit faults at the outgoing lines of nuclear power units.It is suggested to take comprehensive measures of increasing system rotation reserve capacity,distributed accessing of nuclear power units,and improving the action time of protection equipment after the connection of small nuclear unit to the isolated small grid.