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digital protection
    The New Features in the Development of Home Made Digital Protection
    国产数字式保护发展的新特点
    Application of new technology in digital protection
    数字式保护新技术的应用
    Discussion on Digital Protection Technique of Main Electric Apparatus
    主设备数字式保护技术的讨论
    A better connection for digital protection is also proposed,which takes the inter phase voltage as the input of the directional element at low voltage side and make interior angle setting easier.
    最后针对数字式保护的特点 ,采用与中、高压侧相间电压满足同相位关系的低压侧相间电压差作为方向元件的电压量的接线方式 ,提出了一种更好的、使内角整定计算更为方便的功率方向元件的接线方式。
    BKD-50000/500 model HV parallel reactors are used for a 500 kV system in a certain project and its protections are LFP-917 and LFP-974D models, which use the single-chip machine for its digital protection.
    某工程 5 0 0kV系统中 ,采用BKD - 5 0 0 0 0 / 5 0 0型高压并联电抗器 ,其保护采用LFP - 91 7和LFP - 974D型保护装置 ,由单片机实现数字式保护
    The home made digital protection has passed through several eras since the first home made digital protection WXB 01 Microprocessor Based HV Line Protection was first put into operation on electric power system in 1987. Some new features in the development of home made digital protection are discussed in this article, and some methods of the realization of a few key technique are also compared.
    自1987 年 W X B01 型微机高压线路保护在现场正式投入运行以来,国产数字式保护经历了若干次更新换代。 在此分析了当前我国数字式保护技术发展的一些新特点,并对数字式保护的几个关键技术的实现方法进行了比较。
    The components and logic of digital protection are mainly realized by programming, it makes the protection device difficult to understand for users and it is also difficult to analyze the reason of maloperation and misoperation of the protection.
    数字式保护的保护元件和逻辑主要由软件实现,这使得保护装置对用户不透明,也不易分析保护的误动或拒动原因。
    The authors overall consider the features to realize this software and make full use of Object Oriented Programming design method that is available for reference to the development of simulation software for other digital protection devices.
    笔者全面考虑了保护仿真软件的实现特点,并充分利用了面向对象的程序设计方法,对其它数字式保护的仿真软件开发也有很好的借鉴意义。
 

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