电工技术文章翻译：电力系统中的接地保护
原文内容：
接地保护是电力系统中非常重要的一部分，它起着保护人员和设备安全的关键作用。接地保护系统可以有效地将接地故障电流从故障点引导开，并将电流限制在安全水平，从而避免对设备和人员造成严重伤害。接地保护系统主要包括接地故障检测和接地故障定位两个方面。
在接地故障检测方面，我们通常采用差动保护装置来检测系统中的接地故障。差动保护装置可以通过比较系统中不同点的电流值来准确检测出接地故障，一旦检测到故障，保护装置会迅速切除故障点，防止接地故障电流继续传播。
而在接地故障定位方面，我们需要利用接地保护装置记录下接地故障发生时的电流波形和故障点的信息，然后结合系统的拓扑结构和分布参数进行分析，最终确定故障点的位置。通过准确地定位接地故障点，我们可以更快速地采取措施进行修复，减少系统的停电时间，提高供电可靠性。
接地保护在电力系统中具有非常重要的作用，它不仅可以保护设备和人员的安全，还可以提高系统的可靠性和稳定性，是电力系统中不可或缺的一部分。
翻译内容：
Title: Translation of Electrical Engineering Technical Article: Grounding Protection in Power Systems
Grounding protection plays a crucial role in power systems, serving to safeguard the safety of personnel and equipment. The grounding protection system effectively directs fault ground currents away from the fault point and limits the current to a safe level, thereby preventing serious harm to equipment and personnel. The grounding protection system mainly consists of ground fault detection and ground fault location.
For ground fault detection, we typically employ differential protection devices to detect ground faults in the system. These protection devices accurately detect ground faults by comparing the current values at different points in the system. Once a fault is detected, the protection device swiftly disconnects the fault point to prevent the spread of ground fault currents.
In terms of ground fault location, we utilize grounding protection devices to record the current waveforms and fault point information when ground faults occur. Subsequently, we analyze the system's topology and distributed parameters to accurately determine the fault point's location. Through precise ground fault location, we can expedite measures for repair, reduce system downtime, and enhance power supply reliability.
In conclusion, grounding protection plays a vital role in power systems. It not only ensures the safety of equipment and personnel but also improves system reliability and stability, making it an indispensable part of power systems.
