IEC TS 62898-1:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General principles
5 Purpose and application of microgrids
6 Resource analysis and generation forecast
7 Load forecast
8 Distributed energy resource planning
9 Microgrid power system planning
10 Technical requirements for DER in microgrids
11 Technical requirements for distribution lines in
   microgrids
12 Technical requirements for microgrid connection
   to distribution networks
13 Technical requirements for control, protection and
   communication systems
14 Evaluation of microgrid projects
Annex A (informative) - Business use case A Guarantee a
        continuity in load service by islanding with microgrids
Annex B (informative) - Business use case B Optimize local
        resources to provide services to customers inside the
        microgrid
Annex C (informative) - Business use case C Electrify
        remote areas using renewable energy sources
Annex D (informative) - Business use case D Optimize
        local resources to provide services to the grid/disaster
        preparedness
Bibliography

IEC TS 62898-1:2017(E) provides guidelines for microgrid projects planning and specification. Microgrids considered in this document are alternating current (AC) electrical systems with loads and distributed energy resources (DER) at low or medium voltage level. This document does not cover direct current (DC) microgrids.
Microgrids are classified into isolated microgrids and non-isolated microgrids. Isolated microgrids have no electrical connection to a wider electric power system. Non-isolated microgrids can act as controllable units to the electric power system and can operate in the following two modes:
- grid-connected mode;
- island mode.
This document will cover the following areas:
- microgrid application, resource analysis, generation forecast, and load forecast;
- DER planning and microgrid power system planning;
- high level technical requirements for DER in microgrids, for microgrid connection to the distribution system, and for control, protection and communication systems;
- evaluation of microgrid projects.