Abstract: Internet has worked in all aspects of work and life. In energy and power industries, business informatization and networking have been fully constructed. Production, operation, organization and management are inseparable from the Internet network. However, the construction and control of Internet exports still lack a unified management, which brings potential security risks. This paper introduces the present situation and existing problems of the information extranet of a power group company, designs and plans the unified convergence of the Internet entrance and exit, and elaborates the scheme in detail from the unified export management and network security.

Key words: power information system, information external network, unified export of Internet, network security, information safety

摘要： 互联网已经深入到了工作生活的各个方面，在能源电力等行业，业务上的信息化和网络化已经得到充分的建设，生产、经营、组织、管理等各项工作都离不开互联网网络.但对互联网的出口建设和管控还缺少统一管理，从而带来安全隐患.介绍了某电力集团公司信息外网的现状和存在问题，对互联网出入口的统一汇聚进行了总体设计和规划，并从统一出口管理和网络安全几方面对方案进行了详细阐述.

关键词: 电力信息系统, 信息外网, 互联网统一出口, 网络安全, 信息安全