Abstract This paper analyzes the effects of the 9-min pan-India voluntary lights-off policy that was planned and executed by the Government of India in April 2020 on the National Grid and the steps that were taken to maintain grid stability during the event. The policy was a symbolic gesture of public solidarity with frontline healthcare and emergency workers in the nation's war against the COVID-19 pandemic. The event entailed nationwide switching-off of electric lights and lighting of earthen lamps or switching-on of torch lights. This 9-min event posed a significant challenge to the country's power systems engineers in managing grid stability during the large-scale load reduction, and meticulous planning and implementation of protective measures were carried out. In this article, the strategy implemented by the Indian power sector to manage the grid during the nine-minute event is described. The variations of grid parameters such as frequency, voltage, and load at all dispatch centers before, during, and after the nine-minutes are analyzed, and the generation schedule that was followed is also presented, along with real-time results. This case study provides an overview of power systems management that involves strategic scheduling of generators throughout the country to tackle sudden and mass-reductions of load on the power system.

中文翻译：

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国家电网的突出特点及其应急管理：以印度为例

摘要 本文分析了印度政府于 2020 年 4 月计划和执行的 9 分钟泛印度自愿熄灯政策对国家电网的影响，以及在事件期间为维持电网稳定性而采取的措施。该政策是在全国抗击 COVID-19 大流行的战争中，公众声援前线医疗保健和急救人员的象征性姿态。该活动需要在全国范围内关闭电灯并点亮土灯或打开手电筒。这场历时 9 分钟的事件对全国电力系统工程师在大规模减载期间管理电网稳定性提出了重大挑战，并进行了精心策划和实施的保护措施。在本文中，描述了印度电力部门在 9 分钟事件期间实施的电网管理策略。分析了所有调度中心的频率、电压和负载等电网参数在 9 分钟之前、期间和之后的变化，并给出了所遵循的发电计划以及实时结果。本案例研究概述了电力系统管理，包括对全国各地的发电机进行战略调度，以应对电力系统负载的突然和大规模减少。以及实时结果。本案例研究概述了电力系统管理，包括对全国各地的发电机进行战略调度，以应对电力系统负载的突然和大规模减少。以及实时结果。本案例研究概述了电力系统管理，包括对全国各地的发电机进行战略调度，以应对电力系统负载的突然和大规模减少。