|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/substation-grounding-1/
课程评论：没有评论
**课程名称：变电站接地** **课程概述：** 本课程深入探讨变电站接地这一至关重要的环节，旨在确保在电气故障期间人员和设备的安全。您将学习接地系统的实际应用，以及如何将变电站内所有常见设备连接到接地网。 课程内容涵盖： * **接地系统基础：** 了解接地在变电站安全运行中的核心作用。 * **设备连接：** 学习如何实际连接变电站内的各种设备至接地网。 * **故障电流分析：** 分析变压器和断路器配置如何影响接地电流，从而准确计算接地故障的电流大小。 * **安全许可规程：** 掌握正确的安全许可操作顺序，确保在复杂操作中的人员安全。 * **围栏安全：** 详细讲解如何在接地故障时，确保变电站围栏对人员的安全性。 * **导体尺寸计算：** 演示如何精确计算接地系统铜排的尺寸，以保障接地网的长期设计。 * **地网对周边环境的影响：** 分析变电站接地故障时地电位的升高如何影响远端变电站，并提供避免此类问题的方案。 * **接地理论与计算：** 深入学习接地系统的理论知识，包括计算接地网电阻、容许接触电压和跨步电压、接地电流、接地电位升（GPR）以及实际的接触电压和跨步电压。 **核心价值：** 本课程将使您全面掌握变电站接地系统的设计、实施和安全保障技能，为确保变电站可靠运行和人员安全打下坚实基础。
Substation grounding is one of the most important elements of substation, as it keeps personnel and equipment safe during an electrical fault.In this course you will learn all about the practical aspects of grounding and how we connect all of the common equipments inside a substation to the grounding grid.We will look at how grounding currents are affected by the transformers in the network and the configuration of the circuit breakers, both of which will allow you to define the magnitude of the ground fault for any configuration that you may come across.It is critical that safety permits are applied in the correct sequence and we will learn how they are implemented in a way which ensures that the personnel are safe during this complex procedureDuring a ground fault the substation fence can be the most dangerous element in the substation and we look in detail how we can make it safe for personnel working inside the area.Selecting the correct size of copper bar for the grounding system is key to the long term design of the substation grounding grid and will show the calculations that will allow you to do this.When a fault occurs inside the substation the ground beneath the substation will rise to an elevated level which can cause significant issues for the remote end substations, we will look at this issue in detail and show you how to avoid these problems on your network.We will then go into the more theoretical aspects of grounding and calculate the grid resistance value, the tolerable touch and step voltages, the grid current, ground potential rise and finally the actual touch and step voltages.
