IEC TS 62786:2017
Distributed energy resources connection with the grid

Standard No.

IEC TS 62786:2017

Release Date

2017

Published By

International Electrotechnical Commission (IEC)

Latest

IEC TS 62786:2017

Replace

IEC 8/1439/DTS:2016

Scope

This technical specification provides principles and technical requirements for distributed energy resources (DERs) connected to the distribution network. It applies to the planning, design, operation and connection of DERs to distribution networks. It includes general requirements, connection scheme, choice of switchgear, normal operating range, immunity to disturbances, active power response to frequency deviation, reactive power response to voltage variations and voltage changes, EMC and power quality, interface protection, connection and start to generate electrical power, active power management, monitoring, control and communication, and conformance tests. This document specifies interface requirements for connection of generating plants with the distribution network operating at a nominal frequency of 50 Hz or 60 Hz. DERs include distributed generation and permanently connected electrical energy storage in the form of synchronous generators, asynchronous generators, converters, etc., connected to the medium voltage (MV) or low voltage (LV) distribution network. NOTE Mobile electrical energy storage devices (e. g. electrical vehicles) are under consideration for future editions. The requirements of this document can be superseded by laws and regulations where applicable.

IEC TS 62786:2017 Referenced Document

• IEC 61000-1-2:2016 Electromagnetic compatibility (EMC) - Part 1-2: General - Methodology for the achievement of functional safety of electrical and electronic systems including equipment with regard to electromagnetic phenomena
• IEC 61000-2-10:1998 Electromagnetic compatibility (EMC) - Part 2-10: Environment - Description of HEMP environment - Conducted disturbance
• IEC 61000-2-11:1999 Electromagnetic compatibility (EMC) - Part 2-11: Environment - Classification of HEMP environments
• IEC 61000-2-12:2003 Electromagnetic compatibility (EMC) - Part 2-12: Environment; Compatibility levels for low-frequency conducted disturbances and signalling in public medium-voltage power supply systems; Basic EMC Publication
• IEC 61000-2-13:2005 Electromagnetic compatibility (EMC) - Part 2-13: Environment - High-power electromagnetic (HPEM) environments, radiated and conducted
• IEC 61000-2-2:2002 Electromagnetic compatibility (EMC) - Part 2-2: Environment; Compatibility levels for low-frequency conducted disturbances and signalling in public low-voltage power supply systems
• IEC 61000-2-4:2002 Electromagnetic compatibility (EMC) - Part 2-4: Environment; Compatibility levels in industrial plants for low-frequency conducted disturbances
• IEC 61000-2-9:1996 Electromagnetic compatibility (EMC) - Part 2: Environment - Section 9: Description of HEMP environment - Radiated disturbance - Basic EMC publication
• IEC 61000-3-11:2000 Electromagnetic compatibility (EMC) - Part 3-11: Limits; Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems; Equipment with rated current 75 A and subject to conditional connection
• IEC 61000-3-12:2011 Electromagnetic compatibility (EMC) - Part 3-12: Limits - Limits for harmonic currents produced by equipment connected to public low-voltage systems with input current 16 A and 75 A per phase
• IEC 61000-3-2:2014 Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current <= 16 A per phase)
• IEC 61000-3-3:2013 Electromagnetic compatibility (EMC).Part 3-3: Limits.Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current 16 A per phase and not subject to conditional connectio
• IEC 61000-3-8:1997 Electromagnetic compatibility (EMC) - Part 3: Limits - Section 8: Signalling on low-voltage electrical installations - Emission levels, frequency bands and electromagnetic disturbance levels
• IEC 61000-4-2:2008 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measuring techniques - Electrostatic discharge immunity test
• IEC 61000-4-3:2006 Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test

IEC TS 62786:2017 history

• 2017 IEC TS 62786:2017 Distributed energy resources connection with the grid