水电机组带长线路黑启动仿真分析

Simulation Analysis of Hydropower Units Black Start with Long Lines

黑启动过程中避免发电机组的自励磁和过电压问题是决定启动方案成功的关键因素之一。通过研究黑启动过程中产生自励磁的原理和判定方法,提出一种简单有效的自励磁判别方法,以延边电网为例,对两江电站3号机组空充220 kV江敦线能否产生自励磁进行了计算分析;在此基础上建立了两江电站的黑启动仿真模型,并利用M atlab软件对黑启动的暂态过程进行仿真,详细地模拟了黑启动的动态过程。

To avoid self excitation and over voltage of generator during black start is one of the key factors for a successful start up.Based on the research of self excitation principle and judging method,a simple self excitation judging criterion has been adapted to analysis and calculates if the self excitation occurred in Liangjiang Power Station air 220kV Jiangdun line.A black start up simulation model has been established and the transient progress of black start up simulation has been carried out by Mat lab.The dynamic progress of black start up has been simulated in detail.