Research on model system architecture of smart distribution grid

In order to solve the problem of optimizing operation and control under complicated network connections in distribution grid, and to provide better support for the distribution network running economically and efficiently, the paper constructs an model system structure which includes three model types, six kinds of business models and three levels. The paper also designs a distribution network model library. It includes six sub-model libraries, has functions of scheduling control for each model, input and output, model analysis, user interaction, and can provide user interface for other modules. Model system structure and distribution network model library provide basic support for smart distribution network development of planning, operation, and control. And they have important theoretical and practical significance too.