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IEC 61427-2 Ed. 1.1 en:2024 Secondary cells and batteries for renewable energy storage - General requirements and methods of test - Part 2: On-grid applications, 2024
- Redline version [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General considerations
- 5 General test conditions [Go to Page]
- 5.1 Accuracy of measuring equipment [Go to Page]
- 5.1.1 Voltage measurements
- 5.1.2 Current measurements
- 5.1.3 Temperature measurements
- 5.1.4 Time measurements
- 5.2 Test object considerations
- 5.3 Test object battery selection and size considerations
- 5.4 Test plan
- 6 Battery endurance [Go to Page]
- 6.1 General
- 6.2 Test for endurance in frequency-regulation service
- 6.3 Test for endurance in load-following service
- 6.4 Test for endurance in peak-power shaving service
- 6.5 Test for endurance in photovoltaic energy storage, time-shift service
- 7 Battery properties and electrical performance [Go to Page]
- 7.1 Declaration of the system properties
- 7.2 Determination of energy content at +25 °C ambient temperature
- 7.3 Determination of the energy efficiency during endurance tests at +25 °C ambient temperature
- 7.4 Determination of the energy efficiency during endurance tests at the minimum and maximum ambient temperature
- 7.5 Determination of waste heat generated during endurance tests at the maximum ambient temperature
- 7.6 Determination of energy requirements during periods of idle state at +25 °C ambient temperature
- Annex A (informative) Battery-related hazards [Go to Page]
- A.1 General
- A.2 Examples
- Annex B (informative) Supplemental test profile for frequency regulation duty service [Go to Page]
- B.1 General
- B.2 The Annex B profile for evaluating battery endurance in frequency regulation duty
- B.3 Test procedure
- B.4 Examples of data acquired with the 6.2 and the 24 h Annex B sequence
- Bibliography
- Figures [Go to Page]
- Figure 1 – Boundary of the full-sized battery (FSB)
- Figure 2 – Two-step selection process of the test object battery (TOB)
- Figure 3 – Workflow for the determination of endurance properties and electrical performance of the TOB as governed by the sequence of test data generation within 6.2 to 6.5
- Figure 4 – Sequence of performance tests carried out with TOB 1 within an endurance test 6.x
- Figure 5 – Workflow and decision tree for endurance tests 6.2 through 6.5
- Figure 6 – Frequency regulation service test routine profile (6.2) – Profile a
- Figure 7 – Frequency regulation service test routine profile (6.2) – Profile b
- Figure 8 – Frequency regulation service test routine profile (6.2) – Profile c
- Figure 9 – Schematic view of the evolution of battery voltage over time during cycling with constant power discharge and charge pulses
- Figure 10 – Load-following service test routine profile (6.3) – Profile a
- Figure 11 – Load-following service test routine profile (6.3) – Profile b
- Figure 12 – Load-following service test routine profile (6.3) – Profile c
- Figure 13 – Daily peak-power shaving service test routine profile (6.4)
- Figure 14 – Daily photovoltaic energy storage time-shift service test routine (6.5) – 3 kW
- Figure 15 – Daily photovoltaic energy storage time-shift service test routine (6.5) – 30 kW
- Figure 16 – Schematic view of the location of the two sets of energy values (energy to auxiliaries and energy to and from TOB) to be used for the determination of the energy storage efficiency factor η
- Figure 17 – Schematic view of the location of the two sets of energy values (energy to auxiliaries and energy to and from battery) to be used for the determination of the amount of waste heat generated
- Figure 18 – Schematic view of the location of the two sets of energy values (energy to auxiliaries and energy to battery) to be used for the determination of the energy requirements during periods of idle state of the battery
- Figure B.1 – 24 h sequence of the Annex B profile for a supplemental evaluation of the service-induced performance decay of a battery in frequency-regulation service
- Figure B.2 – Development of excessive on-charge voltage levels after about 40 days of simulated frequency-regulation with the 6.2 c profile
- Figure B.3 – Decay of charge acceptance resulting, after about 20 days, in the need for an increased number of SoCOT recovery actions when tested with the Annex B sequence profile
- Tables [Go to Page]
- Table 1 – Summary of endurance test related electrical property data of the full-sized (FSB) and the test object (TOB) battery
- Table 2 – Summary of physical dimension data of the full-sized battery (FSB)
- Table 3 – Summary description of the full-sized battery (FSB)
- Table 4 – Summary description of the test-object battery (TOB)
- Table 5 – Summary of the constant power discharge performance of the TOB at an ambient temperature of +25 °C ± 3 K
- Table 6 – Summary of energy efficiencies determined in endurance tests at an ambient temperature of +25 °C ± 3 K
- Table 7 – Summary of energy efficiencies determined in endurance cycle tests at the minimum and maximum ambient temperature
- Table 8 – Parameters to achieve and maintain the target operational state of charge, SoCOT, during tests at the minimum ambient temperature
- Table 9 – Parameters to achieve and maintain the target operational state of charge, SoCOT, during tests at the maximum ambient temperature
- Table 10 – Summary of energy released as heat during endurance tests at the maximum ambient temperature
- Table 11 – Summary of energy required during idle state periods at +25 °C ± 3 K ambient temperature
- Table A.1 – Non-exhaustive listing of potential battery-related hazards to be taken in consideration in risk assessment activities
- Table A.2 – Non-exhaustive listing of potential installation-related hazards to be taken in consideration in risk assessment activities
- Final version [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General considerations
- 5 General test conditions [Go to Page]
- 5.1 Accuracy of measuring equipment [Go to Page]
- 5.1.1 Voltage measurements
- 5.1.2 Current measurements
- 5.1.3 Temperature measurements
- 5.1.4 Time measurements
- 5.2 Test object considerations
- 5.3 Test object battery selection and size considerations
- 5.4 Test plan
- 6 Battery endurance [Go to Page]
- 6.1 General
- 6.2 Test for endurance in frequency-regulation service
- 6.3 Test for endurance in load-following service
- 6.4 Test for endurance in peak-power shaving service
- 6.5 Test for endurance in photovoltaic energy storage, time-shift service
- 7 Battery properties and electrical performance [Go to Page]
- 7.1 Declaration of the system properties
- 7.2 Determination of energy content at +25 °C ambient temperature
- 7.3 Determination of the energy efficiency during endurance tests at +25 °C ambient temperature
- 7.4 Determination of the energy efficiency during endurance tests at the minimum and maximum ambient temperature
- 7.5 Determination of waste heat generated during endurance tests at the maximum ambient temperature
- 7.6 Determination of energy requirements during periods of idle state at +25 °C ambient temperature
- Annex A (informative) Battery-related hazards [Go to Page]
- A.1 General
- A.2 Examples
- Annex B (informative) Supplemental test profile for frequency regulation duty service [Go to Page]
- B.1 General
- B.2 The Annex B profile for evaluating battery endurance in frequencyregulation duty
- B.3 Test procedure
- B.4 Examples of data acquired with the 6.2 and the 24 h Annex B sequence
- Bibliography
- Figures [Go to Page]
- Figure 1 – Boundary of the full-sized battery (FSB)
- Figure 2 – Two-step selection process of the test object battery (TOB)
- Figure 3 – Workflow for the determination of endurance properties and electrical performance of the TOB as governed by the sequence of test data generation within 6.2 to 6.5
- Figure 4 – Sequence of performance tests carried out with TOB 1 within an endurance test 6.x
- Figure 5 – Workflow and decision tree for endurance tests 6.2 through 6.5
- Figure 6 – Frequency regulation service test routine profile (6.2) – Profile a
- Figure 7 – Frequency regulation service test routine profile (6.2) – Profile b
- Figure 8 – Frequency regulation service test routine profile (6.2) – Profile c
- Figure 9 – Schematic view of the evolution of battery voltage over time during cycling with constant power discharge and charge pulses
- Figure 10 – Load-following service test routine profile (6.3) – Profile a
- Figure 11 – Load-following service test routine profile (6.3) – Profile b
- Figure 12 – Load-following service test routine profile (6.3) – Profile c
- Figure 13 – Daily peak-power shaving service test routine profile (6.4)
- Figure 14 – Daily photovoltaic energy storage time-shift service test routine (6.5) – 3 kW
- Figure 15 – Daily photovoltaic energy storage time-shift service test routine (6.5) – 30 kW
- Figure 16 – Schematic view of the location of the two sets of energy values (energy to auxiliaries and energy to and from TOB) to be used for the determination of the energy storage efficiency factor η
- Figure 17 – Schematic view of the location of the two sets of energy values (energy to auxiliaries and energy to and from battery) to be used for the determination of the amount of waste heat generated
- Figure 18 – Schematic view of the location of the two sets of energy values (energy to auxiliaries and energy to battery) to be used for the determination of the energy requirements during periods of idle state of the battery
- Figure B.1 – 24 h sequence of the Annex B profile for a supplemental evaluation of the service-induced performance decay of a battery in frequency-regulation service
- Figure B.2 – Development of excessive on-charge voltage levels after about 40 days of simulated frequency-regulation with the 6.2 c profile
- Figure B.3 – Decay of charge acceptance resulting, after about 20 days, in the need for an increased number of SoCOT recovery actions when tested with the Annex B sequence profile
- Tables [Go to Page]
- Table 1 – Summary of endurance test related electrical property data of the full-sized (FSB) and the test object (TOB) battery
- Table 2 – Summary of physical dimension data of the full-sized battery (FSB)
- Table 3 – Summary description of the full-sized battery (FSB)
- Table 4 – Summary description of the test-object battery (TOB)
- Table 5 – Summary of the constant power discharge performance of the TOB at an ambient temperature of +25 °C ± 3 K
- Table 6 – Summary of energy efficiencies determined in endurance tests at an ambient temperature of +25 °C ± 3 K
- Table 7 – Summary of energy efficiencies determined in endurance cycle tests at the minimum and maximum ambient temperature
- Table 8 – Parameters to achieve and maintain the target operational state of charge, SoCOT, during tests at the minimum ambient temperature
- Table 9 – Parameters to achieve and maintain the target operational state of charge, SoCOT, during tests at the maximum ambient temperature
- Table 10 – Summary of energy released as heat during endurance tests at the maximum ambient temperature
- Table 11 – Summary of energy required during idle state periods at +25 °C ± 3 K ambient temperature
- Table A.1 – Non-exhaustive listing of potential battery-related hazards to be taken in consideration in risk assessment activities
- Table A.2 – Non-exhaustive listing of potential installation-related hazards to be taken in consideration in risk assessment activities [Go to Page]