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| The Practice of Digital Substation Expansion Interface Mode |
| Liu Naijie, Guo Yujun, Zuo Chen |
| Jinhua Power Supply Bureau, Jinhua, Zhejiang 321001 |
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Abstract In the process of digital substation expansion and transformation, the practicalengineering experience is so little at present, particularly for the Secondary relay protection equipmentexpansion interface work. As the first expanded digitized substation in Zhejiang, this paper takes thepower line named “Xin’an I” of 500kV Zhiyan Substation for example, by way of expansion interfacework on differential relaying protection of 500kV II busbar, deeply discuss on the mode of expansionand transformation in a digital substation form three aspects, which is the SCD file configurationchanges, the safety measures before the test and the interface work.
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Received: 26 June 2014
Published: 25 July 2013
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2013, Vol. 14 
