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合并遗留系统和智能电网
越来越清楚的是，智能电网不是由新设备定义的，而是通过在配电网上尽可能多地增加安全可靠的双向通信而启用的服务。
智能电网是一个术语，现在被许多从未在公用事业或相关业务中工作过的人认识到。有股票指数后，企业开发的产品和服务，提高电网，持续的立法主要集中在能源发电和配电的投资和研究，和越来越多的人查看和管理他们在未来的能源使用量将从今天的不同方式。这些因素促使许多分析家预测，2008至2013年间，将有2000亿美元投资于新的电网技术，仅在美国就有超过530亿美元（来源：派克研究）。
这些新的投资涵盖了广泛的产品和服务，但几乎所有的重点都是加强对整个配电网的监控和控制。这包括通过在整个配电系统中促进双向通信和发电能力，捕捉更多与电能质量、消耗和电网性能有关的信息。
It is becoming increasingly clear that the Smart Grid is not defined by NEW devices， but by the services enabled by adding secure and reliable two-way communicaTIons to as many points on the distribuTIon grid as possible. Clearly this will require some new equipment， but it will also require innovaTIon that minimizes stranded assets for the uTIlity industry.
Digi International has identified four capabilities （Figure 1） that are required to drive the benefit goals of the Smart Grid：
Create： devices and sensors to capture information and provide control services.
Collect： communication devices and networks that allow data and control services to happen.
Manage： a network operating environment for managing all the connected devices.
Utilize： business applications that turn the data into actionable information and driving benefits.
