oSIST prEN IEC 63409-7:2026

• Status: Not Published
• Public Enquiry End Date: 07-Sep-2026
• ICS: 27.160 - Solar energy engineering
• ICS: 29.240.01 - Power transmission and distribution networks in general
• Technical Committee: PVS - Solar photovoltaic energy systems
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 26-Jun-2026
• Due Date: 13-Nov-2026
• Completion Date: 20-Aug-2026
• Ref Project: prEN IEC 63409-7:2026 - Photovoltaic power generating systems connection with the grid - Testing of power conversion equipment - Part 7: Remote configuration, control and monitoring

Overview

oSIST prEN IEC 63409-7:2026 is a draft international standard published by CLC and IEC, detailing testing requirements for grid-connected photovoltaic (PV) power generating systems, specifically focusing on power conversion equipment (PCE). Part 7 of this standard emphasizes the evaluation of remote configuration, control, and monitoring functions, which are essential for modern PV systems integrated into smart grids and distributed energy networks. The document establishes testing environments, procedures, and criteria to ensure reliable and standardized information exchange between PV power conversion equipment and energy management systems.

Key Topics

• Remote Configuration: Defines testing protocols for configuring PV power conversion systems via remote communication, covering adjustments to operational parameters, device settings, and communication links.
• Remote Control: Outlines validation of remote commands for real-time control, such as starting/stopping generation, setting operational limits, and implementing grid support functionalities.
• Remote Monitoring: Specifies requirements for transmitting and verifying monitoring data, including power output, status, event logs, and diagnostics, from PCEs to distributed energy resource management systems (DERMS).
• Communication Standards: Emphasizes the use of the IEC 61850 standard series for communication structures and protocols, ensuring interoperability with energy management systems.
• Test Environment and Procedures: Provides guidelines for the setup of test environments, measurement devices, and reporting practices to ensure accurate and repeatable results.
• Performance Criteria: Specifies metrics and tolerances for evaluating the accuracy and responsiveness of remote functions in PV systems.

Applications

This standard supports a wide range of stakeholders involved in the deployment and operation of grid-connected photovoltaic systems:

• PV System Manufacturers: Ensures that power conversion equipment meets international requirements for remote management, facilitating product acceptance in global markets.
• Grid Operators: Assists in integrating PV systems into the smart grid, enabling real-time control and system stability through standardized remote interaction.
• Testing Laboratories: Provides a reference for conducting standardized, verifiable tests of remote configuration, control, and monitoring features in accordance with IEC guidelines.
• Installers and Integrators: Offers confidence that equipment can be managed and monitored remotely, streamlining maintenance, troubleshooting, and system upgrades.
• Energy Management System Developers: Specifies data models and communication interfaces, ensuring seamless integration between distributed energy resources and control platforms.

Related Standards

oSIST prEN IEC 63409-7:2026 references and complements several important international standards in photovoltaic power systems and grid integration, including:

• IEC TS 62786-1: Distributed energy resources connection with the grid - Part 1: General requirements
• IEC 61850 Series: Communication networks and systems for power utility automation, focusing on logical nodes, data objects, and communication service mapping (including IEC 61850-7-1, IEC 61850-7-4, IEC 61850-7-420, IEC 61850-8-1, and IEC 61850-8-2)
• IEC 62934: Grid integration of renewable energy generation - Terms and definitions
• IEC 62053-23: Particular requirements for static meters for reactive energy
• IEC 63409-6: Testing of power conversion equipment – Part 6: Power control functions and grid support

By adhering to oSIST prEN IEC 63409-7:2026, organizations can ensure that their photovoltaic power systems comply with unified requirements for remote management, supporting efficient integration, enhanced system reliability, and robust communication within the evolving smart grid landscape.

Keywords: photovoltaic power generating systems, grid-connected PV, power conversion equipment, remote configuration, remote control, monitoring, energy management systems, IEC 63409-7, smart grid, distributed energy resources, IEC 61850, PV testing standards.

SLOVENSKI STANDARD
01-september-2026
Povezava fotonapetostnih sistemov za proizvodnjo električne energije z omrežjem
- Preskušanje opreme za pretvorbo električne energije - 7- del: Daljinska
konfiguracija, upravljanje in nadzor
Photovoltaic power generating systems connection with the grid - Testing of power
conversion equipment - Part 7: Remote configuration, control and monitoring
Photovoltaic power generating systems connection with the grid - Testing of power
conversion equipment - Part 7: Remote configuration, control and monitoring
Ta slovenski standard je istoveten z: prEN IEC 63409-7:2026
ICS:
27.160 Sončna energija Solar energy engineering
29.240.01 Omrežja za prenos in Power transmission and
distribucijo električne energije distribution networks in
na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

82/2590/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63409-7 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-05-01 2026-07-24
SUPERSEDES DOCUMENTS:
82/2440/CD, 82/2491A/CC
IEC TC 82 : SOLAR PHOTOVOLTAIC ENERGY SYSTEMS
SECRETARIAT: SECRETARY:
United States of America Mr George Kelly
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 8,TC 22,TC 57,TC 69,TC 77,SC 77A,TC 88,TC
120,ACTAD
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Photovoltaic power generating systems connection with the grid - Testing of power conversion
equipment- Part 7: Remote configuration, control and monitoring

PROPOSED STABILITY DATE: 2032
NOTE FROM TC/SC OFFICERS:
This project was discussed and supported by WG6 during their meeting in 2025-10.
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
2 CONTENTS
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

IEC CDV 63409-7 © IEC 2026
4 FOREWORD . 5
5 INTRODUCTION . 6
6 1 Scope . 7
7 2 Normative references . 7
8 3 Terms and definitions . 8
9 4 Testing enviroment . 9
10 4.1 Test setup . 9
11 4.2 Communication specification . 10
12 5 Testing requirements . 10
13 5.1 General . 10
14 5.2 Evaluation of the nameplate data, the basic information and the monitoring
15 function . 11
16 5.2.1 Testing items . 11
17 5.2.2 Testing conditions . 13
18 5.2.3 Testing procedures . 13
19 5.2.4 Performance criteria . 13
20 5.3 Evaluation of the remote control and monitoring functions. 13
21 5.3.1 Testing items . 13
22 5.3.2 Testing conditions . 14
23 5.3.3 Testing procedures . 15
24 5.4 Evaluation of the remote configuration and monitoring functions . 25
25 5.4.1 Testing items . 25
26 5.4.2 Testing conditions . 26
27 Annex A (informative) Overviews and basic principles of logical nodes and data
28 objects in IEC 61850 series . 39
29 A.1 The Basics of the IEC 61850 standard series . 39
30 A.1.1 General . 39
31 A.1.2 Information model . 39
32 A.1.3 Information exchange mechanisms . 39
33 A.2 Use of IEC 61850 for testing . 40
34 A.2.1 Test procedure (principle) . 40
35 A.2.2 Use of IEC 61850 models and services . 41
36 A.2.3 Summary . 42
37 Annex B (normative) Sign conventions for measurements of voltage, current and
38 power . 43
39 B.1 General . 43
40 B.2 Reference polarity and direction . 43
41 B.2.1 Reference polarity of voltage . 43
42 B.2.2 Reference direction of current . 43
43 B.2.3 Sign conventions for measurements of voltage, current and power . 44
44 B.3 Reference frame of active and reactive power . 44
45 B.4 Physical meanings of the power flows of generators in regional standards . 48
46 Annex C (informative) Examples of testing environments . 50
47 C.1 Outline . 50
48 C.2 Recommended specification of power supplies . 51
49 C.3 Recommended specification of measuring instruments . 52
50 Annex D (informative) Influence of MPPT control and PV simulator to the test results . 55
51 D.1 General . 55
IEC CDV 63409-7 © IEC 2026
52 D.2 DC power supply and MPPT control of PCE . 55
53 D.2.1 DC power supply . 55
54 D.2.2 MPPT control . 55
55 D.3 Influence of the PV simulator . 55
56 Bibliography . 58
58 Figure 1 – Overview of IEC 63409 series . 8
59 Figure 2 – Example of the general test setup . 12
60 Figure A.1 – Example of a test procedure . 43
61 Figure C.1 – Reference polarity of voltage . 45
62 Figure C.2 – Reference polarity of current . 45
63 Figure C.3 – Reference polarity and direction for the measurements for DER . 46
64 Figure C.4 – Reference polarity and direction for the measurements for Load . 46
65 Figure C.5 – Rotating vector voltage and current for load. 47
66 Figure C.6 – Rotating vector voltage and current for DER . 47
67 Figure C.7 – Complex power for load . 48
68 Figure C.8 – Complex power for DER . 49
69 Figure C.9 – Power quadrants for load . 49
70 Figure C.10 – Power quadrants for DER . 50
71 Figure D.1 – Example of a testing environment . 52
72 Figure E.1 – PV simulator characteristics examples . 57
73 Figure E.2 – Active power control test waveform with constant DC voltage source and
74 no MPPT . 58
75 Figure E.3 – Active power control test waveform with PV simulator and MPPT enabled . 58
76 Figure E.4 – Examples of operational point movement of a PCE during Active power
77 control tests . 59
79 Table 1 – Nameplate data . 14
80 Table 2 – Basic information (Those data not in the nameplate) . 14
81 Table 3 – Status of PCE . 15
82 Table 4 – Measured values of PCE . 15
83 Table 5 – Testing items of remote control . 17
84 Table 6 – Overview of testing procedures for each testing item . 17
85 Table 7 – Minimum required parameters for autonomous connection and disconnection . 18
86 Table 8 – Minimum required parameters for Active power control . 22
87 Table 9 – Minimum required parameters for Maximum active power control . 24
88 Table 10 – Minimum required parameters for Reactive power control . 25
89 Table 11 – Minimum required parameters for Constant power factor control . 26
90 Table 12 – Grid support functions . 28
91 Table 13 – Minimum required parameters for Voltage – Var control . 29
92 Table 14 – Testing procedures for Voltage – Var control . 30
93 Table 15 – Minimum required parameters for Frequency – Watt control . 32
94 Table 16 – Testing procedures for Frequency – Watt control . 33
95 Table 17 – Minimum required parameters for Voltage – Watt control . 34
96 Table 18 – Testing procedures for Voltage – Watt control . 35
IEC CDV 63409-7 © IEC 2026
97 Table 19 – Minimum required parameters for Power - reactive power control . 37
98 Table 20 – Testing procedures for Power – Reactive power control . 38
99 Table 21 – Minimum required parameters for Power - power factor control . 39
100 Table 22 – Testing procedures for Power - power factor control . 40
101 Table A.1 – Abstract Communication Service Interface . 43
102 Table A.2 Example of Data Objects to be tested . 44
103 Table C.1 – Physical meanings of the power flows of loads . 51
104 Table C.2 – Physical meanings of the power flows of generators . 51
105 Table C.3 – Physical meanings of the power flows of generators in Japan . 51
106 Table C.4 – Physical meanings of the power flows of generators in IEEE 1547.1 . 52
107 Table C.5 – Physical meanings of the power flows of generators in EN 50549-10 . 52
108 Table C.6 – Physical meanings of the power flows of generators in AS/NZS 4777.2 . 52
109 Table D.1 – Required functions for power supplies . 53
110 Table D.2 –Electrical quantity measured with measuring instruments or devices . 54
111 Table D.3 – Recommended specifications for power supplies . 54
112 Table D.4 – Recommended specifications of power quality measurement . 55
113 Table D.5 – Recommended specifications of waveform monitoring and recording
114 device . 56
IEC CDV 63409-7 © IEC 2026
118 INTERNATIONAL ELECTROTECHNICAL COMMISSION
119 ____________
121 PHOTOVOLTAIC POWER GENERATING SYSTEMS CONNECTION WITH
122 THE GRID
123 – TESTING OF POWER CONVERSION EQUIPMENT –
125 Part 7: Remote configuration, control and monitoring
127 FOREWORD
128 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
129 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
130 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
131 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
132 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
133 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
134 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
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136 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
137 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
138 consensus of opinion on the relevant subjects since each technical committee has representation from all
139 interested IEC National Committees.
140 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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142 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
143 misinterpretation by any end user.
144 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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150 6) All users should ensure that they have the latest edition of this publication.
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154 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
155 Publications.
156 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
157 indispensable for the correct application of this publication.
158 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
159 rights. IEC shall not be held responsible for identifying any or all such patent rights.
160 International Standard IEC PHOTOVOLTAIC POWER GENERATING SYSTEMS CONNECTION
161 WITH THE GRID – TESTING FOR POWER CONVERSION EQUIPMENT Part 7: Information
162 exchange has been prepared by IEC technical committee 82.
163 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
165 Full information on the voting for its approval can be found in the report on voting indicated in
166 the above table.
167 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
168 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
169 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
170 described in greater detail at www.iec.ch/publications.
IEC CDV 63409-7 © IEC 2026
171 The committee has decided that the contents of this document will remain unchanged until the
172 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
173 specific document. At this date, the document will be
174 • reconfirmed,
175 • withdrawn,
176 • replaced by a revised edition, or
177 • amended.
IEC CDV 63409-7 © IEC 2026
179 INTRODUCTION
180 Since 2016, TC82 has been contributing to the standardization of requirements for DER
181 connection with the grid under TC8/JWG10, which is a joint working group consisting with TC82,
182 TC120 and SC22E. In parallel with the join work with TC8, since 2016, TC82 has been
183 considering the development of testing standards to evaluate performance and characteristics
184 of power conversion equipment which are relevant to connection with the grid.
185 Having multiple issues into a single document may not only require a lot of time and effort but
186 could also cause difficulties where a single issue could delay the standardization process.
187 Therefore, TC82/WG6 agreed to separate the IEC 63409 into seven parts. In 2021, TC82/WG6
188 started the official project to develop IEC 63409 series.
189 Figure 1 gives an overview of the structure of the whole IEC 63409 series.
190 The part 7 specifies testing conditions and procedures to evaluate functions which can be
191 realised by information exchange with energy management systems.
193 Figure 1 – Overview of IEC 63409 series
IEC CDV 63409-7 © IEC 2026
196 PHOTOVOLTAIC POWER GENERATING SYSTEMS CONNECTION WITH
197 THE GRID
198 – TESTING OF POWER CONVERSION EQUIPMENT –
200 Part 7: Remote configuration, control and monitoring
204 1 Scope
205 The IEC 63409 series specifies requirements for the testing of power conversion equipment
206 (PCE) for use in photovoltaic power systems (PV systems) with or without DC-coupled electrical
207 energy storage devices. Part 7 of IEC 63409 series specifies testing requirements for the
208 evaluation of performance and characteristics of the following three functions with which the
209 PCE may be equipped:
210 • configuration,
211 • control,
212 • monitoring.
213 Those functions can be realized by information exchange with the management system.
214 Therefore, this document specifies the general test environment and setup which consists of
215 the PCE, communication interfaces and the energy management system. Testing conditions
216 and operating conditions of PCE are given for the evaluation of three functions.
217 2 Normative references
218 The following documents are referred to in the text in such a way that some or all of their content
219 constitutes requirements of this document. For dated references, only the edition cited applies.
220 For undated references, the latest edition of the referenced document (including any
221 amendments) applies.
222 IEC TS 62786-1:2023, Distributed energy resources connection with the grid – Part 1: General
223 requirements
224 IEC TS 61836, Solar photovoltaic energy systems - Terms, definitions and symbols
225 IEC 62934:2021, Grid integration of renewable energy generation - Terms and definitions
226 IEC 61850-7-420:2021, Communication networks and systems for power utility automation -
227 Part 7-420: Basic communication structure - Distributed energy resources and distribution
228 automation logical nodes
229 IEC 61850-7-1:2011/AMD1:2020, Amendment 1 - Communication networks and systems for
230 power utility automation - Part 7-1: Basic communication structure - Principles and models
231 IEC 61850-7-4:2010/AMD1:2020, Amendment 1 - Communication networks and systems for
232 power utility automation - Part 7-4: Basic communication structure - Compatible logical node
233 classes and data object classes
234 IEC 61850-8-1:2011/AMD1:2020, Amendment 1 – Communication networks and systems for
235 power utility automation – Part 8-1: Specific communication service mapping (SCSM) –
236 Mappings to MMS (ISO 9506-1 and ISO 9506-2) and to ISO/IEC 8802-3
IEC CDV 63409-7 © IEC 2026
237 IEC 61850-8-2:2018, Communication networks and systems for power utility automation - Part
238 8-2: Specific communication service mapping (SCSM) - Mapping to Extensible Messaging
239 Presence Protocol (XMPP)
240 IEC 60375:2018, Conventions concerning electric circuits
241 IEC 61557-12:2018/AMD1:2021, Amendment 1 - Electrical safety in low voltage distribution
242 systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of
243 protective measures - Part 12: Power metering and monitoring devices (PMD)
244 IEC 62053-23:2020, Electricity metering equipment - Particular requirements - Part 23: Static
245 meters for reactive energy (classes 2 and 3)
246 IEC 63409-6, Photovoltaic power generating systems connection with the grid – Testing of
247 power conversion equipment – Part6: Power control functions and grid support
248 3 Terms and definitions
249 For the purposes of this document, the terms and definitions given in IEC TS 61836, IEC 62934,
250 IEC TS 62786-1, and the following apply.
251 ISO and IEC maintain terminology databases for use in standardization at the following
252 addresses:
253 • IEC Electropedia: available at https://www.electropedia.org/
254 • ISO Online browsing platform: available at https://www.iso.org/obp
255 3.1
256 photovoltaic power generating system
257 PV system
258 electric power generating system which uses the photovoltaic effect to convert solar power into
259 electricity
260 3.2
261 power conversion equipment
262 PCE
263 electrical device converting one form of electrical power to another form of electrical power with
264 respect to voltage, current, frequency, phase and the number of phases
265 [SOURCE: IEC 62109-1:2010, 3.66, modified – The definition has been rephrased, and the note
266 has been deleted.]
267 3.3
268 intelligent electronic device
269 IED
270 any device incorporating one or more processors, with the capability to receive data from an
271 external sender or to send data to an external receiver
272 3.4
273 distributed energy resources management system
274 DERMS
275 The system which, on the behalf of other interested systems, manages the communications and
276 control of individual Distributed Energy Resource (DER (and may do this with a variety of field
277 message protocols), and aggregates this information and communicates with other utility
278 systems, such as a DMS.
IEC CDV 63409-7 © IEC 2026
279 [SOURCE: IEC 61968-5:2020, 3.1.1]
281 4 Testing environment
282 4.1 Test setup
283 Figure 2 shows an example of the general test setup for the evaluation of the configuration,
284 control and monitoring functions equipped with PCE. The evaluation of performance of those
285 three functions shall be performed in manufacture’s factories and/or in testing premises
286 equipped with power supplies and measuring instrument/devices as shown in Figure 2.
287 Examples of the power supplies and the measuring instrument/devices are specified in Annex C.
288 Specifications of the power supplies and the measuring instrument/devices shall be reported in
289 the test report.
290 The performance and characteristics of PCE shall be evaluated with electrical quantity such as
291 voltage, current and power, which are measured at the AC power ports of PCE. Annex B
292 specifies the definitions of sign conventions for measurements of voltage, current and power.
293 Information exchange with PCE shall be based on the client/server role specified in IEC 61850-
294 7-1. The PCE with the IED (Intelligent Electronic Device) is the server, and DERMS (Distributed
295 Energy Resources Management System) is the client. The IED can be a part of the PCE or be
296 an external device. In both cases, the inner (local) communication network between the IED
297 and the PCE is out of scope. The server which consists of PCE and IED are the devices under
298 test (DUT).
299 Clients issue service requests, such as configuration, control and monitoring. Then, clients
300 receive confirmations of the service that has been processed in the server. A client may also
301 receive report indications from a server. Therefore, configuration, control and monitoring
302 functions of PCE shall be remotely implemented at the DERMS.
IEC CDV 63409-7 © IEC 2026
304 Figure 2 – Example of the general test setup
305 The testing of the DUT shall not be influenced by the performance of DC power supply used for
306 the test. Therefore, where the EUT has the capability to disable MPPT control, it is allowed to
307 do so and a DC power supply that is able to provide constant voltage at any required power
308 levels shall be used. A PV simulator may be used provided that the test results are not
309 influenced by any DC instability by the PV simulator. In each case, remarks shall be written in
310 the test report to note the type of the DC power supply or PV simulator used in the test. See
311 Annex D for supplemental information regarding the influences from the PV simulator.
312 4.2 Communication specification
313 The information model is used for the information exchange to implement remote configuration,
314 control and monitoring of the PCE. The information model is defined in IEC 61850-7-4 and IEC
315 61850-7-420, and Annex A describes overviews of information model.
316 IEC 61850-8-2 shall be used as the communication mapping for the outer (public)
317 communication network.
318 5 Testing requirements
319 5.1 General
320 The evaluation of the performance of the information exchange shall be implemented in the
321 following order.
322 • First, the evaluation of the monitoring function shall be done as specified in 5.2.
323 • Second, the evaluation of the control function shall be done as specified in 5.3.
324 • Finally, the evaluation of the configuration function shall be done as specified 5.4.
325 Results of the evaluation of three functions shall be recorded in test reports.
IEC CDV 63409-7 © IEC 2026
326 5.2 Evaluation of the nameplate data, the basic information and the monitoring
327 function
328 5.2.1 Testing items
329 All data listed from Table 1 to Table 4 shall be read on DERMS while PCE is under halt or rated
330 power condition. Data which are monitored at DERMS shall be evaluated with data which are
331 set in PCE and measured by measuring instruments.
332 Table 1 and Table 2 show the lists of the minimum required monitored data for the confirmation
333 of the nameplate data and the basic information of PCE.
334 Table 3 and Table 4 show the lists of the minimum required monitored data for the confirmation
335 of the status and measured values of PCE.
336 When there are other data to be monitored, all additional monitored data shall be reported in a
337 test report.
338 Table 1 – Nameplate data
IEC 61850
Item
Standard LN message parameter Description
Name of the vendor PhyNam.vendor Name of the vendor.
Serial Number PhyNam.serNum Serial number.
IEC 61850-7-4 LPHD
Hardware revision. PhyNam.hwRev HW-revision.
Software revision PhyNam.swRev SW-revision.
Rated apparent power VARtg The continuous
apparent power
capability of the power
inverter.
Rated active power WRtg Rated active power of
the inverter
Rated voltage VRtg Rated voltage
IEC 61850-7-420 DINV
Maximum Input voltage InVMax Maximum Input voltage
limit limit.
Over-Excited Power OvPFRtg Specified Over-Excited
Factor Rating Power Factor Rating
Under-Excited Power UnPFRtg Specified Under-Excited
Factor Rating Power Factor Rating
339 Table 2 – Basic information (Those data not in the nameplate)
IEC 61850
Item
Standard LN message parameter Description
Rated Nominal HzNomRtg Rated Nominal
frequency frequency of usage of
the DER
Rated minimal frequency HzMinRtg Rated minimal frequency
of usage of the DER
IEC 61850-7-420 DGEN
Rated maximum HzMaxRtg Rated maximum
frequency frequency of usage of
the DER
Sign convention for power
PFSign Power factor convention:
factor 'PF' IEC or EEI
IEC CDV 63409-7 © IEC 2026
340 Table 3 – Status of PCE
IEC 61850
Item
Standard LN message parameter Description
CSWI Pos.stVal Circuit breaker / switch
Switch controller IEC 61850-7-4
position
Over frequency DHFT TrZnSt True = the frequency of
the Referenced ECP
exceeds the Trip zone
Under Frequency DLFT True = the frequency of
the Referenced ECP
TrZnSt
exceeds the Trip zone
IEC 61850-7-420
AC Over Voltage DHVT True = the voltage of the
TrZnSt Referenced ECP
exceeds the Trip zone
AC Under Voltage DLVT True = the voltage of the
TrZnSt Referenced ECP
exceeds the Trip zone
341 Table 4 – Measured values of PCE
IEC 61850
Item
Standard LN message parameter Description
AC voltage MMXU PPV.phsAB / "PPV: Phase to Phase
PNV.phsA Voltage
PNV: Phase to Neutral
Voltage"
PPV.phsBC / "PPV: Phase to Phase
PNV.phsB Voltage
PNV: Phase to Neutral
Voltage"
PPV.phsCA / "PPV: Phase to Phase
PNV.phsC Voltage
PNV: Phase to Neutral
Voltage"
AC current A.phsA phase current
A.phsB phase current
A.phsC phase current
Apparent power TotVA The total apparent power
in a three-phase circuit
IEC 61850-7-4
[VA].
Active power TotW The total Active power in
a three-phase circuit
[W].
Reactive power TotVAr The total Reactive power
in a three-phase circuit
[VAr].
Power factor TotPF The total power factor in
a three-phase circuit
Frequency Hz Frequency [Hz].
AC voltage MMXN Vol Non-phase-related AC
rms voltage.
AC current Amp Non-phase-related AC
rms current.
Apparent power VolAmp Non-phase-related AC
apparent power.
Active power Watt Non-phase-related AC
real power.
IEC CDV 63409-7 © IEC 2026
Non-phase-related AC
Reactive power VolAmpr
reactive power.
Power factor PwrFact Average power factor in
a three-phase circuit.
Frequency Hz Frequency [Hz].
DC voltage MMDC Vol DC voltage.
DC current Amp DC current.
DC power Watt DC power.
342 5.2.2 Testing conditions
343 Connect PCE to DC and AC power supplies according to manufacturer’s instructions and
344 specifications.
345 Set operating conditions of the AC power supply so that PCE can operate with nominal voltage
346 and frequency.
347 Voltage of DC power supply shall be set within the operating range of PCE.
348 5.2.3 Testing procedures
349 a) Set DERMS to send command to PCE so that PCE is set under the halt condition.
350 b) Read the nameplate data monitored on DERMS.
351 c) Confirm that the monitored nameplate data are correct, by referring to manufacturer’s
352 specifications.
353 d) Confirm that the status and measured values of PCE on DERMS are correct, by observing
354 the operation of PCE and data which are measured by measuring instruments.
355 5.2.4 Performance criteria
356 The following points shall be evaluated.
357 • Confirm that the monitored nameplate data is not empty and is the same with manufacturer’s
358 specifications.
359 • The status displayed on DERMS is the same with those observing the operation of PCE.
360 • Compare monitored values of DUT and measured values with measuring devices and
361 confirm that the difference of those values is kept within the tolerance which is declared by
362 the manufacturer.
363 5.3 Evaluation of the remote control and monitoring functions
364 5.3.1 Testing items
365 The operation and status of PCE shall be evaluated according to the setting of testing items
366 listed on Table 5.
367 All data listed in Table 3 and Table 4 shall be confirmed on DERMS during the test. Data which
368 are monitored at DERMS shall be evaluated with data which are set in PCE and measured by
369 measuring instruments.
370 Communication of PCE shall also be confirmed by monitoring exchanged data.
IEC CDV 63409-7 © IEC 2026
371 Table 5 – Testing items of remote control
Relevant clause IEC 61850
specifying
Items controlled remotely requirements of the
Standard LN Description
function in IEC TS
62786-1
To cover the Cease to
energize
authorization, state,
4.10 Connection and
Autonomous connection and and external request,
starting to generate IEC 61850-7-420 DCTE
disconnection as well as the Return
electrical power
to service
authorizations, state,
and external request
To set the power
factor and the
4.7.3 Dynamic reactive quadrant of the DER,
Constant power factor
power support DFPF with the possibility of
control
capabilities different settings for
generating and
consuming
To cause the DER to
4.11 Ceasing and limit its maximum
Maximum active power
reduction of active power DWMX active power at the
control
on set point Referenced ECP to
the target value
IEC 61850-7-420
To set a target active
power value
4.11 Ceasing and (generating or
Active power control reduction of active power DWGC consuming) at the
on set point Referenced ECP that
the DER should
achieve
To the amount of
reactive power as a
4.7.3 Dynamic reactive
percentage of WMax,
Reactive power control power support DVAR
VArMax, or AvlVAr, or
capabilities
an absolute value of
reactive power
372 5.3.2 Testing conditions
373 Connect PCE to DC and AC power supplies according to manufacturer’s instructions and
374 specifications.
375 Set operating conditions of the AC power supply so that PCE can operate with nominal voltage
376 and frequency.
377 Voltage of DC power supply shall be set within the operating range of PCE.
378 Table 6 shows testing items, which are controlled remotely, and parameters, which are changed
379 during the test.
380 Table 6 – Overview of testing procedures for each testing item
Items controlled
Sequence of setting of parameters to be changed
remotely
Confirmation of autonomous connection and disconnection of PCE with the grid:
1) when the grid is stable.
Autonomous connection
2) when the grid voltage is changed.
and disconnection
3) when the grid frequency is changed.
4) after OV, UV, OF, or UF protections are operated.
IEC CDV 63409-7 © IEC 2026
Start with 1,0, then set to 0,9 over-exciting condition.
Set to 1,0, then set to 0,9 under exciting condition.
Optional:
Constant power factor
control
Start with 1,0, then set to the minimum over-exciting condition.
Set to 1,0, then set to the minimum under-exciting condition.
Note: minimum values shall be declared by vendors.
Maximum active power
Start with 80%, then setting to 100%.
control
Start with 80%, then setting to 100%.
Active power control
Set the maximum and minimum limit.
Reactive power control Start with 10%, then setting to 0%.
381 5.3.3 Testing procedures
382 5.3.3.1 Autonomous connection and disconnection
383 5.3.3.1.1 Parameters
384 The remote control function for autonomous connection and disconnection shall be evaluated
385 by setting and changing parameters listed on Table 7.
386 During the test, confirm that the status and measured values of PCE on DERMS are correct by
387 observing the operation of PCE and data which are measured by measuring instruments for the
388 following four cases:
389 1) when the grid is stable.
390 2) when the grid voltage is changed.
391 3) when the grid frequency is changed.
392 4) after OV, UV, OF, or UF protections are operated.
393 For evaluating response time of the remote control function, measure the time from when
394 DERMS sends a command until the PCE begins operating.
395 Table 7 – Minimum required parameters for autonomous connection and disconnection
IEC 61850
Item
Standard LN message parameter Description
Switch controller CSWI Pos.ctlVal Circuit breaker / switch position
Configuration of HVRT PTOV StrVal Voltage start value setting; if this
level is exceeded, 'Str.general'
becomes true.
Configuration of LVRT PTUV StrVal Voltage start value setting; if this
level is exceeded, 'Str.general'
becomes true.
IEC 61850-7-4
Configuration of HFRT StrVal Frequency or frequency rate
change setting; if this level is
PTOF
exceeded, 'Str.general' becomes
true.
Configuration of LFRT StrVal Frequency or frequency rate
change setting; if this level is
PTUF
exceeded, 'Str.general' becomes
true.
If true, the DER is authorized to
automatically return to service; if
IEC 61850-7-
Enabling function DCTE RtnSvcAuto false, the DER must wait until an
external RtnSvcAuth is received
to allow it to return to service.
IEC CDV 63409-7 © IEC 2026
Return to service duration (ms)
Value of ramp rate t
that is a time for ramping up that
must not be exceeded. Active
power shall increase linearly, or
RtnRmpTmms in a stepwise linear ramp, with an
average rate-of-change not
exceeding the DER nameplate
active power rating divided by this
return to service duration.
Time delay (ms) before returning to
Delay time
service in
order to ensure that both the
RtnDlTmms
frequency and
voltage are within their high and
low limits
Normal voltage range The voltage high limit of the
normal voltage range.
The measured voltage must be
VHiLim
below this high limit before the
DER may be allowed to return to
service.
The voltage low limit of the
normal voltage range.
The measured voltage must be
VLoLim
above this low limit before the
DER may be allowed to return to
service.
Normal frequency range The frequency high limit of the
normal frequency range.
The measured frequency must be
HzHiLim
below this high limit before the
DER may be allowed to return to
service.
The frequency low limit of the
normal frequency range.
The measured frequency must
HzLoLim
be above this low limit before the
DER may be allowed to return to
service.
Active power setpoint Active power setpoint setting as a
DWGC WSptPct
percentage of Wmax.
397 5.3.3.1.2 When the grid is stable
398 5.3.3.1.2.1 Procedures
399 a) Set parameter of PCE “CSWI.Pos.ctlVal” with False by sending command from DERMS.
400 b) Set parameter of PCE “DCTE.RtnSvcAuto” with True by sending command from DERMS.
401 c) Set parameter of PCE “DCTE.RtnRmpTmms” with declared value by sending command from
402 DERMS.
403 d) Set parameter of PCE “DCTE.RtnDlTmms” with declared value by sending command from
404 DERMS.
405 e) Set parameter of PCE “DWGC.WSptPct” with rated value by sending command from DERMS.
406 f) Set parameter of PCE “DCTE.VHiLim”, “DCTE.VLoLim”, “DCTE.HzHiLim”, and
407 “DCTE.HzLoLim” with operable range as manufacturer’s declaration by sending command
408 from DERMS.
409 g) Set parameter of PCE “CSWI.Pos.ctlVal” with True by sending command from DERMS.
410 h) Set AC power supply to rated voltage and rated frequency.
411 i) Increase voltage of DC power supply gradually.
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