翻译题目：继电保护发展和控制中图样识别理论的应用

外文资料

APPLICATION OF THE THEORY OF PATTERN RECOGNITION IN DEVELOPING RELAY PROTECTION AND CONTROL V.E.GLazyrin

Novosibirsk State Technical University

Reliable and timely recognition of emergency states in electrical systems requires solutions that are adequate for the technical equipment being used. For more than ten years discrete computing devices have been widely implemented in relay protection and control. The appearance of microprocessors has given developers extremely powerful tools for using new principles and algorithms in designing relay systems. Despite this, the design strategy remains practically unchanged, though the new element base exceeds the capabilities of the conventional one to the degree that it is simply on a qualitatively higher level. In connection with this, the necessity has ripened for qualitatively new approaches to designing relay systems.

Conventional design methods very much depend on the intuition and experience of the developer. The execution of the work is frequently unpredictable, since the developer must simultaneously represent the state of many (sometimes more than ten) parameters. At the same time, a person has a limited capacity to simultaneously keep in mind many objects. This causes not only complexity in developing new devices, but also causes the subjective phenomenon of a group of relay protection experts which have on an intuitive level mastered a combination a several groups of concepts.This reduces the number of objects which must be kept in mind simultaneously, but the formation of these combined groups has not been formalized, which hinders mutual understanding.

During the development of new complex devices of relay systems, the quantity of parameters,with which the developer has to work simultaneously increases even more. This not only complicates the design, but also increases the probability of errors, which