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所在平台: Udemy |
课程主页: https://www.udemy.com/course/uninterruptible-power-supply-ups-systems/
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**课程名称：不间断电源（UPS）系统** **课程概述：** 本课程深入探讨了不间断电源（UPS）系统的设计、运行和维护。现代电力供应系统面临着在保证最高可靠性和电力质量的同时，最大限度地降低成本的挑战。这种权衡使得电力供应系统的设计、运行和维护成为一项复杂的工作。 课程首先分析停电和低电力质量的主要影响，特别是对不同类别负载（非关键、关键和核心负载）的影响。课程强调，对于关键和核心负载，必须提供替代的安全供电方案以满足其极高的可靠性和电力质量要求。UPS 是实现这一目标的关键工具。 本课程将详细介绍各种 UPS 的设计、运行和控制算法，并重点分析其在功率容量、切换时间、安全供电时长、维护需求、系统监控、自我诊断和成本等方面的差异。内容涵盖了静态 UPS（适用于短时间供电）和机电式 UPS（适用于长时间供电）的特点及经济性。课程还将讨论如何根据负载需求和停电统计数据，选择静态和机电式 UPS 的组合以实现最优的替代供电方案。 课程强调，在设计替代供电系统时，应灵活地在完美的可靠性和电力质量之间进行权衡，以降低成本和简化设计。然而，这种灵活性不应以牺牲良好的维护和操作规程为基础。课程还指出，许多情况下，替代供电系统选择不当、安装错误、运行维护不善，导致在需要时无法正常工作，从而造成时间、金钱和安全的损失。 **课程内容包括：** * 不同负载类别对电力供应的要求分析。 * 提供足够供电系统的各种方案，包括直至 UPS 的配电系统设计。 * UPS 系统设计和选择指南。 * 各种替代供电方案的运行、维护和故障排除。 * 典型的案例研究和模拟。
The power supply systems must provide maximum reliability and power quality while its costs are to be minimized. These requirements present a major design, operation, and maintenance challenges due to the dilemma between supply improvements and the associated investments. Therefore, the design, operation, and maintenance of power supply systems are usually a compromise between the reliability and quality of supply from one side and the required investments from the other side. The main impacts of power interruptions and low power quality are the costs and safety associated with them. Therefore, electrical loads are classified according to the impacts of interrupting their power supply; loads are classified to non-essential, essential, and critical. The impact of power interruptions on non-essential loads are minor while interruptions have a significant impact on the essential loads, especially if the interruption duration is above a specific threshold value. Critical loads are a class of the loads that should not be interrupted under any circumstances. The hazards, and costs associated with interrupting critical loads are usually intolerable even if the interruption duration is very small. For essential and critical loads an alternative safe supply must be available for providing the required reliability and power quality levels. The Uninterruptible Power Supply (UPS) is a main tool for providing safe power supply for these load classes. UPSs have many designs, operation, and control algorithms. The main differences UPS categories are the power capacity, switching time, safe duration, maintenance requirements, available system monitoring, self-diagnosis, and costs. For safe durations from minutes to - for example - an hour, static UPSs are the ideal safe supply alternative while in longer duration electromechanical UPSs provide an economically feasible alternative supply. According to the load requirements and interruption statistics, a justified mix of static and electromechanical UPSs may be chosen for providing an optimal alternative supply. In all cases, the flexibility allowed to deviate from perfect reliability and power quality should be used to allow designing cheaper and simpler alternative supply systems; however, this flexibility should not be wasted by permitting poor maintenance and operating procedures to compromise the reliability and quality. There are often cases that the alternative supply systems are not well selected, or incorrectly installed, operated, maintained. In other cases, they do not work properly when needed and this failure caused losses in term of time, money, and safety. Therefore, this training course provides and in-depth analysis of supply requirements for various load classes. In addition, the course surveys various options for providing an adequate supply system considering the design of the power distribution systems up to UPSs. Choice and design of system designs and UPSs are carefully covered within the course. Operation, maintenance, and troubleshooting of various supply alternatives are also considered in this course and typical case studies and simulations are presented.
