1.预付费计量系统整体概念
A Payment Metering System is a collective infrastructure that supports the contractual
relationship between a supplier of goods or services and a customer. It includes processes,
functions, data elements, system entities (devices and users) and interfaces.
付费计量系统是一个集合该系统支持电能服务供应商与消费者的契约关系,它包含过程、功
能、数据单元、系统实体(装置和使用者)和接口。
1.1过程 Process
A Process is a logically linked sequence of tasks and activities that enable the system to
achieve particular objectives in terms of the purpose for which it is designed. A process calls
on the services of functions, which in turn operate on data elements. A process may also
interact with other processes, (e.g. being invoked or terminated by another process) or it may
invoke sev