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所在平台: Udemy |
课程主页: https://www.udemy.com/course/short-circuit-calculations-in-electrical-power-networks/
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课程名称：电力网络中的短路计算 课程概述：该课程由具有22年电气变电站实务经验的专家主讲，涵盖了中压（MV）、高压（HV）和超高压（EHV）领域，结合多项重要项目的电力分配网络设计经验，确保电气计算的准确性。此外，讲师拥有电气与电力机械工程硕士学位，研究方向为利用先进人工智能技术（LSTM）检测和识别电力质量问题。本课程设计旨在将理论与实践相结合，适合各个工程与技术级别的学员，从工程大学的学生到专业的高级电力系统工程师均可受益。课程内容通过简明的理论阐述并结合丰富的视觉材料和实际案例，以便学员能够将学到的知识应用于现实中。 本课程将深入探索以下主题： - 电力网络中短路电流计算的基本原理 - 电网中可能发生的各种电气故障类型 - 对称与不对称故障的区别 - 短路电流计算的重要性及其关键影响因素 - 在短路条件下构建电网等效电路的假设 - 短路电流的供给源（公用设施系统、本地发电机、同步电机、电容器、感应电机） - 如何计算不对称短路电流 - 在电网计算中使用单位制的重要性 - 断路器的额定电流 - 电流限制电抗器（发电机电抗器、馈线电抗器、母线电抗器） - 电动机启动的相关内容 - 中性点在地故障状态下的电网行为中的作用 - 中性点（N）与地（E）之间的区别 - 对称分量理论 - 正序、负序与零序的区别 - 零序电流与中性电流的区别 - 零序电流是交流还是直流 - 正序、负序及特别是零序电流在星形与三角形连接中的表现 - 序阻抗（发电机、变压器、架空输电线和电缆） 通过本课程，参与者将具备进行电力系统和电气配电系统中短路电流计算的能力，并掌握相关理论与实践技能，以便在高压和超高压电气变电站及各种电力分配系统的实际操作中应用。
Through my practical experience (22 years) in the field of electrical substations for medium voltage (MV), high voltage (HV), and extra-high voltage (EHV), as well as working with various consulting offices in designing electrical distribution networks for many important projects that require accuracy in various electrical calculations, in addition to obtaining a Master's degree in Engineering Sciences in Power and Electrical Machines Engineering titled "Detection and Identification of Power Quality Problems using advanced Artificial Intelligence techniques (LSTM)", this course and these very important questions were prepared using the best engineering programs that connect academic/theoretical aspects with practical/reality in high voltage and extra-high voltage electrical substations, as well as distribution networks for medium and low voltages.This unique approach to explanation and question preparation has been designed to cater to all engineering and technical levels, starting from students in engineering universities and various technical institutes, all the way to highly experienced specialized engineers in power systems and electrical distribution.The course has been explained in a practical manner, relying on simplicity in theoretical explanations and placing greater emphasis on visuals and real-life practical examples. This approach allows us to connect academic theoretical study with what actually exists in practical reality for real-world application after completing this course.The course we have is closely related to the power systems and electrical distribution systems. In this course, we provide the following:Short-Circuit Current Calculations in Electrical Power Networks* The basics of short-circuit current calculations in electrical power networks.* The types of electrical faults that can occur in the electrical network.* differentiate between symmetrical and unsymmetrical faults.* The importance of short-circuit current calculations and the key factors that influence them* discuss the assumptions used in constructing the equivalent circuit of the electrical network during a short-circuit condition* The sources of short-circuit current supply (utility system, local generators, synchronous motors and capacitors, induction motors)* How we can calculate the asymmetric short-circuit currents* The importance of using the Per-Unit System in electrical network calculations instead of using actual quantities* The Rated Currents of Circuit Breakers* The Current limiting reactors (generator reactor, feeder reactors, busbar reactors,* Motor starting* The role of the neutral point in determining the behavior of the electrical network during a ground fault* The difference between the neutral point (N), and the Ground point or the earth point (E).* The Symmetrical Components theory* The difference between Positive Sequence, Negative Sequence, and Zero Sequence.* The difference between the zero-sequence current and the neutral current.* Is the zero-sequence current AC or DC?* The positive-sequence current, negative-sequence current, and especially the zero-sequence current in star and delta connections.* Sequence impedances (generators, transformers, overhead transmission lines and cables)
