PCS-915母差保护继保试验方法研究

 

赵文婷，卢迪勇

（广东电网公司东莞供电局, 广东 东莞 523120）

 

    摘 要：对于目前主流的母差保护装置，还没有非常完善的逻辑校验方法，尤其是数据之外的试验仪加量原则。以南瑞继保PCS-915母差保护装置为例，简要介绍其典型配置、动作判据及PCS-915与BP-2C的区别，并重点从原理、逻辑校验模型、加量原则等方面分别阐述了复压闭锁差动逻辑校验、大差和小差K 值校验、死区保护逻辑以及失灵保护逻辑校验方法，为220 kV母差保护装置的验收和维护提供参考依据。

    关键词：PCS-915；母差保护；继保试验；死区保护；失灵保护

    中图分类号：TM588     文献标识码：A     文章编号：1007-3175(2020)01-0053-06

    Abstract: For the current mainstream busbar differential protection device, there is no very thorough logic method of calibration, especially for the tester dosage principle beyond data.Taking NR relay protection PCS-915 busbar differential protection device for example, this paper briefly introduced the typical configuration, the movement criterion and the difference between PCS-915 and BP-2C, expounded the re-pressing shutting differential motion logic verification, the big and small differences K value verification, the dead zone protection logic and the failure protection logic verification method emphatically from the aspects of principle, logic verification model and dosage principle model etc, which provides the reference frame for the acceptance inspection and maintenance of 220 kV busbar differential protection device.

    Key words: PCS-915; busbar differential protection; relay protection; dead zone protection; failure protection