GIC observations and studies in the Hydro-Quebec power system
GIC observations and studies in the Hydro-Quebec power system
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DOI：
10.1016/s1364-6826(02)00128-1
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发表时间：
2002-11-01
影响因子：
1.9
通讯作者：
Bolduc, L
中科院分区：
文献类型：
--
作者：
Bolduc, L
1989 年 3 月 13 日，世界标准时间 7 点 45 分，由于严重的地磁风暴，魁北克水电公司的系统完全停电。因此，服务中断了好几个小时，线路开路造成的过电压造成的损失总计达 1,320 万美元，其中仅物质损失就达 650 万美元。 1991 年，地磁感应电流 (GIC) 对 Radisson-Sandy Pond HVDC 线路产生了一些影响和损坏。 3 月 24 日，世界标准时间 21 时 55 分，在 Radisson 变电站的两台并联变压器中的一台测量到大于 110 A 的 GIC（推测总共为 220 A），导致 HVDC 链路丢失。 10 月 28 日也发生了同样的事情，但这次是设备损坏。从这些事件中，短期研究导致了丽笙运营流程的升级、静态无功补偿器的开启阈值的修改以及一些过滤器的修改。此外，我们还与加拿大地质调查局 (GSC) 签订了一项协议，在任何预期的严重地磁风暴发生之前向网络控制中心 (CCR) 发送警告警报。在更长期的研究中，我们与 GSC 合作，在阿比蒂比沿 250 公里长的铜质电话线安装了 5 个采集变电站。魁北克水电公司设施的典型地点，从 1992 年到 1994 年，每 10 秒测量一次接地电压和磁场。 Louvicourt变电站测得的最高对地电压约为1.70 V/km，持续20秒。基于 IREQ 在 20 世纪 80 年代开发的技术的线电压不对称测量已经得到升级。安装数量增加（从 4 个增加到 8 个），并添加了谐波测量等功能。超过固定阈值的电压不对称会在 CCR 处产生警报，CCR 会通过在网络运行中采取安全措施来做出反应。 1989 年 3 月和 1991 年事件期间。 Arnaud 变电站的电压不对称度分别增至 9.6% 和 15.5%。为了满足短路或其他意外情况下网络稳定性的需要，一项重大变化是于 1996 年在魁北克水电公司 735 kV 网络中安装了串联补偿。由于电容器会阻挡直流电流，因此观察到的不对称性仍约为之前观察到的 20%。因此，现在我们有信心我们的网络能够承受预期的最坏情况 GIC。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
On March 13, 1989, at 7 h 45 UT, Hydro-Quebec experienced a complete black-out of its system due to a severe geomagnetic storm. Consequently, service was interrupted for many hours and overvoltages resulting from line openings cost 6.5 M$ in material damages alone among a total of 13.2 M$. In 1991, geomagnetically induced currents (GIC) produced some effects and damages on the Radisson-Sandy Pond HVDC link. On March 24, at 21 h 55 UT, GIC larger than 110 A were measured in one of two transformers in parallel (presumably, giving a total of 220 A) at Radisson substation which led to the loss of the HVDC link. The same thing happened on October 28, but this time with material damages to equipment. From these events, short-term studies led to the upgrading of operational processes, modifications of opening thresholds of Static Var Compensators and modifications of some filters at Radisson. Also an agreement was concluded with Geological Survey of Canada (GSC) for sending a warning alert to the Network Control Centre (CCR) before any anticipated severe geomagnetic storms, Among more long-term Studies, in collaboration with GSC, we have installed 5 acquisition substations along a 250-km long copper telephone line in Abitibi. a site typical of Hydro-Quebec facilities, and from 1992 to 1994 measured ground voltages and magnetic fields every 10 s. The highest ground voltage measured at Louvicourt substation was similar to1.70 V/km for 20 s. Asymmetry measurement of line voltages, based on techniques developed at IREQ in the 1980s, have been upgraded. the number of installations has been increased (from 4 to 8) and functions like harmonic measurement have been added. Voltage asymmetries over a fixed threshold produce an alarm at the CCR, which reacts by taking Security measures in network operation. During March 1989 and 1991 events. voltage asymmetry grew to 9.6% and 15.5%, respectively, at the Arnaud substation. A major change, for needs of network stability during short circuit or other contingencies, has been the installation of series compensation in 1996 into the Hydro-Quebec 735-kV network. Since capacitors block DC current, the observed asymmetry has remained about 20% of that observed before. So, now, we are confident that our network would survive the anticipated worst case GIC. (C) 2002 Elsevier Science Ltd. All rights reserved.