韶关电网一次停电事故分析及其技术改造优化方案研究

摘要

The optimal configuration of busbar automatic transfer switch (BATS) plays an important role in improving the reliability of power supply in a regional power grid.Taking the outage of Mojiang in Shaoguan power grid as an example, the operating characteristics of the power grid before and after the outage and the cause of the accident are analyzed by using BPA transient stability analysis program.The optimization scheme for improving the reliability of power supply in power grid is analyzed.Action logic and control strategy for BATS of the Mojiang station are designed.The dynamic simulation results show that the proposed scheme is feasible, which can make the power grid recover rapidly under the same fault in different operation modes, and make voltage and frequency recover to the acceptable operating range.The proposed scheme can effectively improve the reliability of power supply.%变电站备自投装置的优化配置对于一个地区电网的供电可靠性的提高作用显著.以韶关电网墨江片一起停电事故为例,应用BPA暂态稳定分析程序,分析了事故前后电网的运行特点及失电原因,研究了提高变电站供电可靠性的优化方案,针对该站的特殊情况设计备自投装置的动作逻辑和控制策略.动态仿真分析结果显示,所提方案使电网在同样事故条件,在不同运行方式下均能有效快速恢复片区供电,电压及频率恢复稳定至正常运行范围内,提高了电网的供电可靠性,方案可行.