问题 问答题 论述题

根据《电网调度自动化系统使用化要求》(试行),网、省电网调度自动化系统应具备哪些基本功能?

答案

参考答案:

应具备以下功能:

1、安全监视:

(1)电网主接线及运行工况。

(2)主要联络线电量。

(3)实时发电功率与计划发电功率。

(4)电网、分省或全省、分区的实时用电负荷及计划用电负载。

(5)重要厂、站及大机组电气运行工况。

(6)异常、事故报警及打印。

(7)时间顺序记录(SOE.。

(8)电力调度运行日报的打印。

(9)召唤打印。

2、自动发电控制。

(1)维护系统频率在规定值。

(2)对于互联系统,维持其联络净交换功率及交换电量在规定范围内。

判断题
单项选择题

Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened (91) . As was discussed before, it was not (92) the 19th century that the newspaper became the dominant pree-leetronie (93) , following in the wake of the pamphlet and the book and in the (94) of the periodical. It was during the same time that the communications revolution (95) up, beginning with transport, the railway, and leading (96) through the telegraph, the telephone, radio, and motion pictures (97) the 20th-eentury world of the motor ear and the airplane. Not everyone sees that process in (98) . It is important to do so.
It is generally recognized, (99) , that the introduction of the computer in the early 20th century, (100) by the invention of the integrated circuit during the 1960s, radically changed the process, (101) its impact on the media was not immediately (102) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (103) , with display becoming sharper and storage (104) increasing. They were thought of, like people, (105) generations, with the distance between generations much (106)
It was within the computer age that the term" information society" began to be widely used to describe the (107) within which we now live. The communications revolution has (108) both work and leisure and how we think and feel both about place and time, but there have been (109) views about its economic, political, social and cultural implications. "Benefits" have been weighed (110) "harmful" outcomes. And generalizations have proved difficult.

A.concept

B.dimension

C.effect

D.perspective