后备保护

• Some measurements of reliability aboutbackup protection device for transformer are also presented . secondly , some oftypical protection algorithms about micro computer are researched in theory
  给出了提高变压器后备保护装置可靠性的措施,并将部分措施应用于装置设计中,取得了预想的效果。
• Firstly , the reliability ofmicro computer protection is analyzed and calculated according to theory . at thesame time , the reliability of backup protection device for transformer with self - examis estimated by constructing state - module
  文章在微机保护可靠性方面进行了较为深入的理论分析与计算,构造了状态空间模型,为带自检的变压器后备保护装置的可靠性作出了估算。
• Results testifiedthat the device has high measuring precision , high correct action , high reliability etc . now , the application of backup protection device for transformer based on dsp isvery wide from its researching
  通过对变压器后备保护装置进行较全面的动模实验,验证了保护装置的各项性能指标,同时实验结果表明该装置具有测量精度高、动作准确率高、可靠性高等特点。
• Agent protection can also improve the action speed of the backup protection ; this paper puts forward the cooperation scheme of the backup protection of the generator and transformer ; at the same time , the validity of this method is proved in the matlab
  Agent保护的另一个主要功能是提高后备保护的动作速度,本文提出了发变组后备保护的协调方案并用matlab验证了方案的有效性。
• The problem of realizing adaptive distance protection can be solved by using agent . more useful information can be gained by using mobile agent . the cooperation between back - up protection and primary protection can be achieved
  利用agent技术可以解决自适应距离保护实现的问题,利用移动agent可以获得更多有用的信息,达到后备保护和主保护的配合,并能实现对系统隐形故障的监控。
• Based on the same ac voltage and current inputs in the back - up protection of transformer , the software module of on - line monitoring the short - circuit reactance can be added in the back - up protection device and the software flow chart are given in the paper
  由于本文所提出的变压器绕组的短路电抗在线监测原理与变压器后备保护所需的交流输入量相同，讨论了在后备保护中添加变压器绕组在线监测软件的设计流程。
• Lastly , based on understanding the structure and function of backup protection device fortransformer , its hardware and software are designed and introduced . the backup protection device for transformer based on dsp was passedperformance criterions of required by using dynamic simulations
  最后,在了解变压器后备保护装置的结构和功能的基础上,文章提出了变压器后备保护装置的设计方案,介绍了部分硬、软件的设计。
• Sampling rate is 32 points per cycle , parallel real - time calculation could be done for all relays ( including main protection , back - up protection , and abnormal operating protection ) within one sampling period , so makes it has very high reliability and speed of action
  装置采样率为每周32点，且在每个采样间隔内对所有继电器（包括主保护、后备保护、异常运行保护）进行并行实时计算，使得装置具有很高的可靠性及动作速度。
• One defines break points based on node degree with comparing the amount of all backup protections in a mutiloop network . it is testified by practice to have legitimacy and feasibility with simple theory and improve efficiency a lot of protection coordination setting
  其一，运用网络节点度的概念，通过比较环网中所有保护的后备保护的数量的大小来确定断点，理论上简单合理，实践证明正确可行，极大的提高了保护整定配合的效率。