电网波动对上海光源运行的影响及分析

电网波动对上海光源加速器的正常运行有较大影响。针对该问题，展开了系统的分析和研究工作。首先介绍了电网波动的成因以及电网波动对上海光源的影响情况。通过对具体事例进行分析，优化了上海光源加速器受电网波动影响后的基本恢复流程。分析了各硬件系统在发生电网波动时的不同表现，并依此探讨了如何优化此类故障的处理流程，建立完善的机器恢复程序。针对外电网波动提出若干建议，并提出了面对电网波动时需要采取的措施，尽可能降低电网波动对如低温压缩机、超导高频腔等关键设备的影响。以期缩短实际故障时间，加快机器恢复速度，保障上海光源稳定运行。以近10年运行数据为基础，研究发现电网波动对上海光源的影响存在若干重要阈值，这些阈值对机器恢复具有指标性作用。对因电压暂降产生的二次故障进行分析讨论，并提出若干建议。

Influence and analysis of power grid fluctuation on the operation of shanghai synchrotron radiation facility

The fluctuation of power grid has a great influence on the normal operation of Shanghai Synchrotron Radiation Facility (SSRF) accelerator. The study first introduces the causes of power grid fluctuation and its impact on SSRF in order to solve this problem. Through the analysis of former cases, the basic recovery process of SSRF accelerator affected by power grid fluctuation is sorted out and optimized. This paper also analyzes the different performance of each hardware system in the face of the power grid fluctuation. In addition, it discusses how to optimize the processing flow and establish a perfect machine recovery program. Several suggestions and measures are put forward in response to the fluctuation of the external power grid, so as to minimize the impact of the power grid fluctuation on key equipment such as cryogenic compressor and superconducting radio-frequency cavity, shorten the actual failure time, speed up the machine recovery, and ensure the stable operation of SSRF. Based on the operation data in the past ten years, it is found that there are several important thresholds for the impact of power grid fluctuations on SSRF, and these thresholds have an indicator effect on machine recovery. The secondary faults that are caused by voltage sags are analyzed and discussed in this paper, and some guidance and suggestions are put forward.