Code of Practice for Electrical Energy Storage Systems

Paper: 978 1 78561 278 7 / $100.00
Published: September 2017  

Publisher: The Institution of Engineering and Technology
80 pp., 6 1/8" x 9 1/5"
The purpose of this Code of Practice is to provide a reference to practitioners on the safe, effective, and competent application of electrical energy storage systems. It also provides an understanding of the common terms and operating modes of electrical energy storage systems. Building on the IET’s technical briefing, Electrical Energy Storage: An Introduction, this will also provide detailed information on the specification, design, installation, commissioning, operation, and maintenance of an energy storage system.

The scope covers all types of electrical and electrochemical energy storage systems; integration into low voltage power systems; industrial, commercial, and domestic applications; and systems aligned with existing standards, regulations, and guidance.

Table of Contents:
1. Introduction
2. Scope and purpose
3. Overview of ESS components and architectures
4. ESS operating modes and applications
4.1. Increasing the “self-consumption” of buildings fitted with renewable energy systems
4.1.1. Solar storage – basic time shifting operation
4.2. Arbitrage services
4.3. Ancillary services
4.3.1. Voltage support
4.3.2. Frequency response
4.3.3. Reserve capacity
4.4. Providing a backup or alternative power supply
4.4.1. Backup operation
4.4.2. Off grid operation
4.4.3. UPS operation
4.5. Network upgrade deferral
4.6. Export limiting systems
5. Batteries

6. Balance-of-System (BOS) components
6.1. Inverter
6.2. Monitoring and metering
6.3. Other components
7. ESS safety considerations
7.1. Introduction
7.2. Construction (Design and Management) Regulations
7.3. Electricity at Work Regulations
7.4. Hazard inventory

8. Specification of an ESS
8.1. System sizing
8.1.1. Load profiles
8.1.2. Modelling
8.1.3. Battery sizing
8.1.4. Inverter sizing

9. Design of an ESS

10. Network connection and DNO approval
10.1. General
10.2. G83: single premises
10.3. G83: multiple premises
10.4. G59 installations
10.5. G59 commissioning
10.6. G59 arrangements for HV connections
10.7. Labelling requirements
10.8. New connections
10.9. Contestable and non-contestable works

11. ESS installation
11.1. Installation phases
11.2. Battery installation
11.2.1. Installation requirements
11.2.2. Battery location
11.2.3. Smoke and fire alarms
11.3. Inverter / charger location

12. ESS test and commissioning
13. ESS handover and documentation
14. ESS operation and maintenance