Finally, the techno-economic criteria of design and operation of non-attended substation using integrated automation system are discussed.

最后，就采用综合自动化系统进行无人值班变电站设计和运行的一些技术经济判据进行了讨论。

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The practice proved : The system sets out from the running manage and locale operation of non-attended substation.

该系统主要有以下特点：一是用一套工控主机对多个变电站实现防误操作；

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The operation is attended with some danger.

这手术有一定的危险。

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It took place in April 2011, and the judge said it was attended by three former IRA members, one of whom "had direct knowledge of the PIRA operation of 20 March 1989".

BBC: Smithwick Inquiry: Former IRA members refuse to testify

Lloyd said he had attended Greg's wedding three weeks ago but the Canadian-born star had not mentioned any impending operation.

BBC: New injury blow for Rusedski