Power line communication systems for power utility applications - Part 3: Digital Power Line Carrier (DPLC) terminals and hybrid ADPLC terminals

IEC 62488-3:2021(E) applies to power line carrier terminals and networks used to transmit information over power networks including extra high, high and medium voltage (EHV/HV/MV) power lines using both digital and optionally analogue modulation systems in a frequency range between 16 kHz and 1 MHz (see also IEC 62488-1).
In many countries, power line carrier (PLC) channels represent a significant part of the utility-owned telecommunication system. A circuit normally routed via a PLC channel can also be routed via a channel using a different transmission medium such as point to point radio, optical fibre or open wire circuit.
It is therefore important that the input and output interfaces that are used between terminals in the communication system are standardised.
The issues requiring consideration of DPLC and/or APLC devices as parts of a telecommunication network can be found in IEC 62488-1.
The scope of this document also includes the description of I/O interfaces and test set-ups that are necessary to qualify characteristics of DPLC or ADPLC terminal at link level.

General Information

Status
Published
Publication Date
25-Apr-2021
Current Stage
PPUB - Publication issued
Completion Date
26-Apr-2021
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IEC 62488-3:2021 - Power line communication systems for power utility applications - Part 3: Digital Power Line Carrier (DPLC) terminals and hybrid ADPLC terminals
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IEC 62488-3
Edition 1.0 2021-04
INTERNATIONAL
STANDARD
colour
inside
Power line communication systems for power utility applications –
Part 3: Digital Power Line Carrier (DPLC) Terminals and hybrid
ADPLC Terminals
IEC 62488-3:2021-04(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62488-3
Edition 1.0 2021-04
INTERNATIONAL
STANDARD
colour
inside
Power line communication systems for power utility applications –
Part 3: Digital Power Line Carrier (DPLC) Terminals and hybrid
ADPLC Terminals
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-9698-1

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 62488-3:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 7

INTRODUCTION ..................................................................................................................... 9

1 Scope ............................................................................................................................ 10

2 Normative references .................................................................................................... 11

3 Terms, definitions and abbreviated terms ...................................................................... 12

3.1 Terms and definitions ............................................................................................ 12

3.2 Abbreviated terms ................................................................................................. 13

4 Generic structure of DPLC and ADPLC terminals .......................................................... 14

5 Access side interfaces ................................................................................................... 17

5.1 General ................................................................................................................. 17

5.2 Digital interfaces ................................................................................................... 17

5.2.1 Ethernet IEEE 802.3 interface........................................................................ 17

5.2.2 Serial interface .............................................................................................. 18

5.3 Analogue interfaces .............................................................................................. 18

5.4 Teleprotection system interface ............................................................................ 19

5.4.1 Description .................................................................................................... 19

5.4.2 Integrated teleprotection ................................................................................ 19

5.4.3 Teleprotection interface frequency band ........................................................ 19

5.4.4 Teleprotection interface impedance ............................................................... 19

5.4.5 Teleprotection interface reflection .................................................................. 19

5.4.6 Teleprotection interface signal levels ............................................................. 20

5.4.7 Teleprotection interface control circuits.......................................................... 20

6 HF line interface ............................................................................................................ 20

6.1 DPLC high frequency band & channeling .............................................................. 20

6.2 Frequency accuracy .............................................................................................. 21

6.3 Signal levels ......................................................................................................... 21

6.4 In-band emissions ................................................................................................. 21

6.5 Nominal impedance .............................................................................................. 21

6.6 Return loss ........................................................................................................... 21

6.7 Degree of unbalance to earth ................................................................................ 21

6.8 Tapping loss ......................................................................................................... 21

6.9 Spurious emissions ............................................................................................... 22

6.10 Nominal output power in the high frequency band ................................................. 23

7 Quality and performance................................................................................................ 23

7.1 General ................................................................................................................. 23

7.2 Dynamic range of the DPLC receiver .................................................................... 24

7.3 Bit rate .................................................................................................................. 24

7.4 Start-up time ......................................................................................................... 25

7.5 Recovery time after synchronization loss .............................................................. 25

7.6 Sensitivity ............................................................................................................. 25

7.7 Selectivity ............................................................................................................. 25

7.8 Adaptability to line conditions ................................................................................ 25

7.9 Quality of voice channels ...................................................................................... 25

7.10 Telephone signalling transmission ........................................................................ 26

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IEC 62488-3:2021 © IEC 2021 – 3 –

7.11 Quality on the serial DATA channels ..................................................................... 26

7.11.1 General ......................................................................................................... 26

7.11.2 Bit rate .......................................................................................................... 26

7.11.3 BER ............................................................................................................... 26

7.11.4 Nominal transmission link delay ..................................................................... 27

7.12 Quality of the frame transmission using Ethernet interfaces .................................. 27

7.12.1 General ......................................................................................................... 27

7.12.2 LAN to LAN Speed ........................................................................................ 27

7.12.3 LAN to LAN latency ....................................................................................... 27

7.12.4 Packet loss on the LAN transfer ..................................................................... 27

8 Testing .......................................................................................................................... 27

8.1 General ................................................................................................................. 27

8.2 Test setup for DPLC link tests ............................................................................... 28

8.3 Signal to noise ratio .............................................................................................. 28

8.4 Return loss ........................................................................................................... 28

8.5 Degree of unbalance to earth ................................................................................ 30

8.5.1 General ......................................................................................................... 30

8.5.2 Longitudinal conversion loss .......................................................................... 30

8.5.3 Output signal balance .................................................................................... 31

8.6 Tapping loss ......................................................................................................... 31

8.7 Spurious and in-band emissions ........................................................................... 32

8.8 Selectivity ............................................................................................................. 33

8.9 Bit error rate ......................................................................................................... 35

8.10 Serial data transmission delay .............................................................................. 37

8.11 Dynamic range of the DPLC receiver .................................................................... 38

8.12 LAN to LAN testing ............................................................................................... 38

8.12.1 General ......................................................................................................... 38

8.12.2 Maximum LAN to LAN throughput .................................................................. 39

8.12.3 LAN to LAN latency ....................................................................................... 39

8.13 Start-up time ......................................................................................................... 39

8.14 Recovery time after synchronization loss .............................................................. 39

9 Configuration and management ..................................................................................... 40

9.1 General ................................................................................................................. 40

9.2 Configuration ........................................................................................................ 40

9.3 Network management system ............................................................................... 40

9.4 Local terminal alarms ............................................................................................ 40

9.5 Event logging ........................................................................................................ 41

10 Cyber security ............................................................................................................... 41

10.1 General ................................................................................................................. 41

10.2 Transmitted payload ............................................................................................. 41

10.3 Management interface .......................................................................................... 41

10.3.1 General ......................................................................................................... 41

10.3.2 Legacy-style management interfaces / Manufacturer-specific

management interfaces ................................................................................. 42

10.3.3 LAN/WAN connected management interfaces ................................................ 42

10.3.4 Authentication and role-base model ............................................................... 42

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– 4 – IEC 62488-3:2021 © IEC 2021

10.4 Network management system interface ................................................................. 42

10.5 Security-related event logging ............................................................................... 43

11 DPLC safety .................................................................................................................. 43

11.1 General ................................................................................................................. 43

11.2 Safety reference standard ..................................................................................... 43

11.3 Classification of DPLC terminals ........................................................................... 43

11.4 Ingress protection ................................................................................................. 44

11.5 Type and routine tests .......................................................................................... 45

12 Storage and transportation, operating conditions, power supply..................................... 47

12.1 Storage and transportation .................................................................................... 47

12.1.1 Climatic conditions ........................................................................................ 47

12.1.2 Mechanical .................................................................................................... 48

12.2 Operating conditions ............................................................................................. 50

12.2.1 Climatic conditions ........................................................................................ 50

12.2.2 Mechanical .................................................................................................... 51

12.2.3 Operating conditions set of tests .................................................................... 51

12.3 Power supply ........................................................................................................ 52

12.3.1 AC supply ...................................................................................................... 52

12.3.2 DC supply ...................................................................................................... 52

13 EMC .............................................................................................................................. 53

13.1 Emission and immunity reference standards ......................................................... 53

13.2 Emission ............................................................................................................... 53

13.2.1 Radiated and conducted emission ................................................................. 53

13.2.2 Low frequency disturbance emission ............................................................. 58

13.3 Immunity ............................................................................................................... 58

13.3.1 EMC environment .......................................................................................... 58

13.3.2 Functional requirements ................................................................................ 60

13.3.3 Immunity test list ........................................................................................... 60

Annex A (informative) HF modulated power signal for ADPLC .............................................. 63

A.1 General ................................................................................................................. 63

A.2 Computation model of ADPLC ............................................................................... 63

A.3 Distribution of E/U ratio of voice channels ............................................................. 65

A.4 Distribution of E/U ratio of sinusoidal waves.......................................................... 67

A.5 Example of E/U ratio of a digital signal .................................................................. 68

A.6 Composite distribution of E/U ratios ...................................................................... 69

A.7 RMS power and load capacity of voice signals ...................................................... 71

A.8 Comprehensive load capacity for ADPLC .............................................................. 73

A.9 Simplified computation method for comprehensive load capacity .......................... 74

Bibliography .......................................................................................................................... 75

Figure 1 – Schematic representation of the elements needed to implement a PLC

system .................................................................................................................................. 11

Figure 2 – Generic architecture of a DPLC terminal .............................................................. 15

Figure 3 – Generic structure of an ADPLC terminal ............................................................... 16

Figure 4 – ETH IEEE 802.3 RJ45 type connector .................................................................. 17

Figure 5 – ETH IEEE 802.3 SC type connector ..................................................................... 18

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IEC 62488-3:2021 © IEC 2021 – 5 –

Figure 6 – Tapping loss limits for DPLC terminals ................................................................. 22

Figure 7 – Max level of spurious emissions outside the high frequency band ........................ 23

Figure 8 – Reference points for measuring DPLC parameters ............................................... 24

Figure 9 – Block diagram of a serial data channel ................................................................. 26

Figure 10 – Test circuit for return loss measurement ............................................................. 29

Figure 11 – Test circuit for LCL measurement (transmission port) ......................................... 30

Figure 12 – Test circuit for OSB measurement (Rx port) ....................................................... 31

Figure 13 – Test circuit for tapping loss measurement .......................................................... 32

Figure 14 – Test circuit for spurious and in-band emissions measurement ............................ 33

Figure 15 – Test circuit for selectivity measurement .............................................................. 34

Figure 16 – Test circuit for bit error rate measurement .......................................................... 36

Figure 17 – Test circuit for serial data transmission delay measurement with a data

tester .................................................................................................................................... 37

Figure 18 – Test circuit for serial data transmission delay measurement ............................... 37

Figure 19 – Test circuit for maximal throughput and latency measurement ............................ 38

Figure 20 – LF disturbances measurement setup .................................................................. 58

Figure A.1 – Calculation model of load capacity for ADPLC .................................................. 64

Figure A.2 – Cumulative distributions of E/U ratio of voice channels for positive half ............ 66

Figure A.3 – Probability density of combined sine waves ...................................................... 67

Figure A.4 – Constellation diagram of 64 QAM ...................................................................... 68

Figure A.5 – Amplitude spectra of unmodulated OFDM sub-carriers ...................................... 68

Figure A.6 – Probability of constellation point power in 64 QAM ............................................ 69

Figure A.7 – Cumulative distribution of comprehensive E/U ratios ......................................... 70

Figure A.8 – Cumulative distribution of equivalent volume for N system channel ................... 72

Table 1 – Dependence of voice channel quality vs. DPLC capacity ....................................... 26

Table 2 – Basic insulation (Table C.6 of IEC 60255-27:2013) ................................................ 43

Table 3 – Double or reinforced insulation (Table C.10 of IEC 60255-27:2013) ...................... 44

Table 4 – List of Type and Routine Tests (Table 12 of IEC 60255-27:2013) .......................... 46

Table 5 – Classification of climatic conditions (Table 1 of IEC 60721-3-1:1997) .................... 47

Table 6 – Climatic tests for storage and transportation.......................................................... 48

Table 7 – Classification of mechanical conditions for transportation (Table 5 of

IEC 60721-3-2:1997) ............................................................................................................ 49

Table 8 – Classification of climatic conditions from Table 1 of IEC 60721-3-3:2002 .............. 50

Table 9 – Classification of mechanical conditions from Table 6 of IEC 60721-3-3:2002 ......... 51

Table 10 – Climatic Tests ..................................................................................................... 51

Table 11 – Sinusoidal vibration test ...................................................................................... 52

Table 12 – Non-repetitive shock test ..................................................................................... 52

Table 13 – Emission – Enclosure port (Table 1 of IEC 61000-6-4:2011) ................................ 54

Table 14 – Emission – Low voltage AC and DC mains port

(Table 2 of IEC 61000-6-4:2011) ........................................................................................... 56

Table 15 – Emission – Telecommunications/network port

(Table 3 of IEC 61000-6-4:2011) ........................................................................................... 57

Table 16 – Characterization of the electromagnetic phenomena

(Table 1 of IEC 61000-6-5:2015) ........................................................................................... 59

Table 17 – Port classification ................................................................................................ 59

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– 6 – IEC 62488-3:2021 © IEC 2021

Table 18 – Performance criteria ............................................................................................ 60

Table 19 – Immunity test list ................................................................................................. 61

Table A.1 – Approximation formula for E/U cumulative distribution of speech ........................ 66

Table A.2 – PDF of constellation point power in 64 QAM constellation diagram .................... 69

Table A.3 – Calculation of P (1 %) and load capacity ...................................................... 73

RMS
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IEC 62488-3:2021 © IEC 2021 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER LINE COMMUNICATION SYSTEMS
FOR POWER UTILITY APPLICATIONS –
Part 3: Digital Power Line Carrier (DPLC) Terminals
and hybrid ADPLC Terminals
FOREWORD

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rights. IEC shall not be held responsible for identifying any or all such patent rights.

This International Standard has been prepared by IEC technical committee 57: Power systems

management and associated information exchange.

This first edition of IEC 62488-3 cancels and replaces the relevant parts of IEC TR 60663 and

IEC 60495, which will be withdrawn at a later date.
The text of this standard is based on the following documents:
FDIS Report on voting
57/2355/FDIS 57/2372/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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– 8 – IEC 62488-3:2021 © IEC 2021

A list of all the parts in the IEC 62488 series, published under the general title Power line

communication systems for power utility applications can be found on the IEC website

...

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