KETEP 세계에너지시장정보

Forewords 2

List of tables and figures 5

List of abbreviations 7

List of countries, territories and economies 8

Executive summary 10

1. Introduction 17
 1.1. The importance of electricity grids for clean energy transitions..............................................................................................17
 1.2. Electricity grids face new challenges ...............................................................................................................................................17
 1.3. Challenge 1: expanding and enhancing physical connections ..................................................................................................18
 1.4. Challenge 2: making grid operations more flexible and bidirectional ....................................................................................24
 1.5. Challenge 3: protecting people, data and the environment ......................................................................................................26
 1.6. Structure of the report.........................................................................................................................................................................27

2. Patents for electricity grids: an overview 31
 2.1. General patenting trends ....................................................................................................................................................................31
 2.2. Geography of electricity grid innovation ........................................................................................................................................33
 2.3. Applicant profiles ..................................................................................................................................................................................36

3. Physical grids and stationary storage 40
 3.1. Main patenting trends in physical grid technology .....................................................................................................................40
 3.2. Recent trends in stationary storage technologies ........................................................................................................................53

4. Smart grids 57
 4.1. Main patenting trends in smart grid technologies ......................................................................................................................57
 4.2. Recent trends in smart EV charging .................................................................................................................................................64

ANNEX 1: Terms of use 70

References 71