具有连续自检的集成保护和控制系统

M. Thompson
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引用次数: 2

摘要

自基于微处理器的设备出现以来,采用集成技术的变电站保护、计量和控制系统的设计一直在发展。现代继电器除了保护电力系统的主要功能外,还具有许多辅助功能。就地和远程计量、就地和远程控制和状态报告、报警功能和通知、联锁、示波器和事件顺序记录都是变电站保护、计量和控制系统所需要的功能,当应用集成技术时,现代保护继电器都可以提供这些功能。电力系统的运行离不开保护,继电保护是整个系统的基础。综合变电站保护与控制系统设计尚未达到传统非综合设计体系的成熟。其中一个原因是计算机和通信技术固有的快速变化。然而,如果我们将用于保护系统设计的成熟概念应用于整个集成保护,计量和控制系统,我们可以创建一个固有的容错和健壮的系统-无论使用的集成技术如何。除非设计得当,否则集成系统可能会丢失固有的冗余。如果设计从一开始就考虑在现代多功能可编程继电器的基础上集成保护,计量和控制,我们不仅可以消除这些缺陷,还可以创建一个内置连续自检功能的系统。我们可以将我们在继电器本身所享受的连续自检的概念扩展到整个系统。本文讨论的设计概念可以使传统设计中隐藏的问题和故障变得显而易见,以便在发生意外操作之前进行纠正。这些功能通常不需要增加成本;相反,它们是通过利用目前使用的强大继电器中可用的能力获得的。本文介绍了一种采用功能强大的可编程继电器的保护与控制系统的总体设计体系结构。它没有详细介绍电力系统保护,也没有详细介绍集成。相反,本文的重点是讨论设计概念,帮助读者设计一个容错,鲁棒的保护和控制系统,具有连续的自检功能,利用现代保护继电器的属性
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integrated Protection and Control Systems with Continuous Self-Testing
The design of substation protection, metering, and control systems using integration technologies has been developing ever since the advent of microprocessor-based devices. Modern relays include many auxiliary functions beyond their primary function of power system protection. Local and remote metering, local and remote control and status reporting, alarm functions and annunciation, interlocking, oscillographic and sequence-of-event recording are all features that have been required in a substation protection, metering, and control system that can all be provided by modern protective relays when integration technologies are applied. A power system cannot be operated without protection, thus the protective relays are the foundation to build an integrated system upon. Integrated substation protection and control system design has not yet reached the maturity of traditional nonintegrated design architectures. One reason for this is the rapid change inherent in computer and communications technologies. However, if we apply well-developed concepts used for protection system design to the entire integrated protection, metering, and control system, we can create an inherently fault-tolerant and robust system- regardless of the integration technologies used. Unless properly designed, integrated systems can be designed such that inherent redundancies are lost. If the design is approached from the beginning with consideration for integrating protection, metering, and control upon a foundation of modern multifunction programmable relays, we can not only eliminate these deficiencies, we can create a system that has built-in continuous self-test features. We can extend the concept of continuous self-test, which we have enjoyed in the relays themselves, to the entire system. The design concepts discussed in this paper can make problems and failures, which would be hidden in a traditional design, readily apparent so that they can be corrected before undesired operation can occur. These features do not generally require increased cost; instead they are obtained by making use of the capabilities available in the powerful relays currently in use. This paper covers the general design architecture of a protection and control system using powerful multifunction programmable relays. It does not cover power system protection in detail, and it does not cover integration in detail. Rather, the focus of this paper is to discuss design concepts that will help the reader to design a fault-tolerant, robust protection and control system, with continuous self-test features, that takes advantage of the attributes of modern protective relays
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