BSI PD IEC/TR 61850-90-7:2013
$215.11
Communication networks and systems for power utility automation – Object models for power converters in distributed energy resources (DER) systems
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 106 |
This part of IEC 61850 describes the functions for power converter-based distributed energy resources (DER) systems, focused on DC-to-AC and AC-to-AC conversions and including photovoltaic systems (PV), battery storage systems, electric vehicle (EV) charging systems, and any other DER system s with a controllable power converter. It defines the IEC 61850 information models to be used in the exchange of information between these power converterbased DER systems and the utilities, energy service providers (ESPs), or other entities which are tasked with managing the volt, var, and watt capabilities of these power converter-based systems.
These power converter-based DER system s can range from very small grid-connected systems at residential customer sites, to medium-sized systems configured as microgrids on campuses or communities, to very large systems in utility-operated power plants, and to many other configurations an d ownership models. They may or may not combine different types of DER systems behind the power converter, such as an power converter-based DER system and a battery that are connected at the DC level.
The namespace of this document is:
“(Tr) IEC 61850-90-7:2012”
The namespace “IEC 61850-90-7” is considered as “transitional” since the models are expected to be included in IEC 61850-7- 420. Potential extensions/modifications may happen if/when the models are moved to International Standard status.
Only the new data objects and CDCs which are represented in bold-italic font will be tagged with this namespace name. The others should still refer to the namespace where they are primarily defined.
NOTE The term power converter is being used in place of “inverter” since it covers more types of conversion from input to output power:
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AC to DC (rectifier)
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DC to AC (inverter)
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DC to DC (DC-to-DC converter)
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AC to AC (AC-to-AC converter)
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 9 | FOREWORD |
| 11 | 1 Scope 2 Normative references |
| 12 | 3 Terms, definitions and acronyms 3.1 Terms and definitions |
| 15 | 3.2 Acronyms |
| 16 | 4 Abbreviated terms |
| 17 | 5 Overview of power converter-based DER functions 5.1 General |
| 18 | 5.2 Power converter configurations and interactions |
| 20 | 5.3 Power converter methods Figures Figure 1 – DER management hierarchical interactions: autonomous, loosely-coupled, broadcast/multicast |
| 21 | 5.4 Power converter functions |
| 22 | 5.5 Differing DER architectures 5.5.1 Conceptual architecture: electrical coupling point (ECP) 5.5.2 Conceptual architecture: point of common coupling (PCC) |
| 23 | 5.5.3 Utility interactions directly with power converters or indirectly via a customer EMS 5.5.4 Communication profiles Figure 2 – Electrical Connection Points (ECP) and Point of Common Coupling (PCC) |
| 24 | 5.6 General Sequence of information exchange interactions |
| 25 | 6 Concepts and constructs for managing power converter functions 6.1 Basic settings of power converters 6.1.1 Nameplate values versus basic settings 6.1.2 Power factor and power converter quadrants |
| 26 | Figure 3 – Producer and Consumer Reference Frame conventions Tables Table 1 – Producer Reference Frame (PRF) conventions |
| 27 | 6.1.3 Maximum watts, vars, and volt-amp settings Figure 4 – EEI Power Factor sign convention |
| 28 | Figure 5 – Working areas for different modes |
| 29 | 6.1.4 Active power ramp rate settings 6.1.5 Voltage phase and correction settings |
| 30 | 6.1.6 Charging settings 6.1.7 Example of basic settings Figure 6 – Example of voltage offsets (VRefOfs) with respect to the reference voltage (VRef) Table 2 – Example basic settings for a storage DER unit |
| 31 | 6.1.8 Basic setting process 6.2 Modes for managing autonomous behaviour 6.2.1 Benefits of modes to manage DER at ECPs |
| 32 | 6.2.2 Modes using curves to describe behaviour Figure 7 – Example of modes associated with different ECPs |
| 33 | 6.2.3 Paired arrays to describe mode curves Figure 8 – Example of a volt-var mode curve |
| 34 | 6.2.4 Percentages as size-neutral parameters: voltage and var calculations 6.2.5 Hysteresis as values cycle within mode curves |
| 35 | 6.2.6 Low pass exponential time rate Figure 9 – Example of hysteresis in volt-var curves Figure 10 – Example of deadband in volt-var curves |
| 36 | 6.2.7 Ramp rates 6.2.8 Randomized response times Figure 11 – Local function block diagram Figure 12 – Time domain response of first order low pass filter |
| 37 | 6.2.9 Timeout period 6.2.10 Multiple curves for a mode 6.2.11 Multiple modes 6.2.12 Use of modes for loosely coupled, autonomous actions 6.3 Schedules for establishing time-based behaviour 6.3.1 Purpose of schedules |
| 38 | 6.3.2 Schedule components |
| 39 | 7 DER management functions for power converters 7.1 Immediate control functions for power converters 7.1.1 General Figure 13 – Interrelationships of schedule controllers, schedules, and schedule references |
| 40 | 7.1.2 Function INV1: connect / disconnect from grid 7.1.3 Function INV2: adjust maximum generation level up/down |
| 41 | 7.1.4 Function INV3: adjust power factor 7.1.5 Function INV4: request active power (charge or discharge storage) |
| 42 | 7.1.6 Function INV5: pricing signal for charge/discharge action |
| 43 | 7.2 Modes for volt-var management 7.2.1 VAr management modes using volt-var arrays |
| 44 | 7.2.2 Example setting volt-var mode VV11: available var support mode with no impact on watts |
| 45 | Figure 14 – Volt-var mode VV11 – available vars mode |
| 46 | 7.2.3 Example setting volt-var mode VV12: maximum var support mode based on WMax Figure 15 – Power converter mode VV12 – Maximum var support mode based on WMax |
| 47 | 7.2.4 Example setting volt-var mode VV13: static power converter mode based on settings |
| 48 | 7.2.5 Example setting volt-var mode VV14: passive mode with no var support Figure 16 – Power converter mode VV13 –Example: static var support mode based on VArMax |
| 49 | 7.3 Modes for frequency-related behaviours 7.3.1 Frequency management modes |
| 50 | 7.3.2 Frequency-watt mode FW21: high frequency reduces active power Figure 17 – Frequency-watt mode curves |
| 51 | Figure 18 – Frequency-based active power reduction |
| 52 | 7.3.3 Frequency-watt mode FW22: constraining generating/charging by frequency Figure 19 – Frequency-based active power modification with the use of an array |
| 53 | Figure 20 – Example of a basic frequency-watt mode configuration |
| 54 | Figure 21 – Example array settings with hysteresis Figure 22 – Example of an asymmetrical hysteresis configuration |
| 55 | 7.4 Dynamic reactive current support during abnormally high or low voltage levels 7.4.1 Purpose of dynamic reactive current support Figure 23 – Example array configuration for absorbed watts vs. frequency |
| 56 | 7.4.2 Dynamic reactive current support mode TV31: support during abnormally high or low voltage levels Figure 24 – Basic concepts of the dynamic reactive current support function |
| 57 | Figure 25 – Calculation of delta voltage over the filter time window Figure 26 – Activation zones for dynamic reactive current support |
| 58 | Figure 27 – Alternative gradient behaviour, selected by ArGraMod |
| 59 | 7.5 Low/high voltage ride-through curves for “must disconnect” and “must remain connected” zones 7.5.1 Purpose of L/HVRT 7.5.2 “Must disconnect” (MD) and “must remain connected” (MRC) curves Figure 28 – Settings to define a blocking zone |
| 60 | Figure 29 – Must disconnect and must remain connected zones Figure 30 – Examples of “must remain connected” requirements for different regions |
| 61 | 7.6 Modes for watt-triggered behaviours 7.6.1 Watt-power factor mode WP41: feed-in power controls power factor 7.6.2 Alternative watt-power factor mode WP42: feed-in power controls power factor Figure 31 – Power factor controlled by feed-in power |
| 62 | 7.7 Modes for voltage-watt management 7.7.1 Voltage-watt mode VW51: voltage-watt management: generating by voltage 7.7.2 Voltage-watt mode VW52: voltage-watt management: charging by voltage Figure 32 – Example configuration curve for maximum watts vs. voltage |
| 63 | 7.8 Modes for behaviours triggered by non-power parameters 7.8.1 Temperature mode TMP 7.8.2 Pricing signal mode PS Figure 33 – Example configuration curve for maximum watts absorbed vs. voltage |
| 64 | 7.9 Setting and reporting functions 7.9.1 Purpose of setting and reporting functions 7.9.2 Establishing settings DS91: modify power converter-based DER settings 7.9.3 Event logging DS92: log alarms and events, retrieve logs |
| 66 | Table 3 – Events |
| 68 | 7.9.4 Reporting status DS93: selecting status points, establishing reporting mechanisms Table 4 – Examples of status points |
| 70 | 7.9.5 Time synchronization DS94: time synchronization requirements 8 IEC 61850 information models for power converter-based functions 8.1 Overall structure of IEC 61850 |
| 71 | 8.2 IEC 61850 system logical nodes Figure 34 – Structure of the IEC 61850 Parts |
| 72 | Table 5 – Interpretation of logical node tables Table 6 – LPHD class |
| 73 | 8.3 Key components of IEC 61850 information modelling of power converter-based functions 8.3.1 Subsets of 61850 models for power converter-based DER functions Table 7 – Common LN class Table 8 – LLN0 class |
| 74 | 8.3.2 Types of interactions for settings, functions, and modes |
| 75 | 8.3.3 Key common data classes (CDCs) Table 9 – CDC SPS Table 10 – CDC SPC |
| 76 | Table 11 – CDC DPC Table 12 – CDC INC |
| 77 | Table 13 – CDC ING Table 14 – CDC ASG |
| 78 | Table 15 – CDC ORG Table 16 – CDC CSG |
| 79 | 8.3.4 Messaging services Table 17 – Schedule (SCR) common data class specification |
| 80 | 8.3.5 Message errors 8.4 Basic settings in IEC 61850 8.4.1 Logical nodes for basic settings Table 18 – Service error type definitions |
| 81 | 8.4.2 IEC 61850 models for basic settings Table 19 – LN DRCT – DER controller characteristics |
| 82 | 8.5 Mode settings in IEC 61850 8.5.1 Logical nodes for establishing and managing modes |
| 83 | 8.5.2 IEC 61850 models for modes Table 20 – LN FMAR – set mode array |
| 85 | 8.6 Schedules in IEC 61850 8.6.1 Scheduling structures Table 21 – LN DGSM – issue mode command |
| 86 | 8.6.2 IEC 61850 models for schedules 8.7 Immediate control functions in IEC 61850 8.7.1 IEC 61850 models for INV1: connect/disconnect Figure 35 – Interrelationships of schedule controllers, schedules, and schedule references |
| 87 | 8.7.2 IEC 61850 models for INV2: adjust maximum generation level up/down Table 22 – LN DOPM – operations Table 23 – INV1 – LN CSWI – issue and respond to control |
| 88 | 8.7.3 IEC 61850 models for INV3: adjust power factor 8.7.4 IEC 61850 models for INV4: charge/discharge storage |
| 89 | 8.7.5 IEC 61850 models for INV5: pricing signal for charge/discharge of storage |
| 90 | 8.8 Volt-var management modes in IEC 61850 8.8.1 IEC 61850 models for VV11 – VV12: volt-var curve settings 8.8.2 IEC 61850 models for VV13 – VV14: volt-var parameter settings |
| 91 | 8.9 Frequency-related modes in IEC 61850 8.9.1 IEC 61850 for FW21: frequency-driven active power modification |
| 92 | 8.9.2 IEC 61850 for FW22: Frequency-watt mode FW22: generating/charging by frequency Table 24 – LN FWHZ – set power levels by frequency for FW21 |
| 93 | 8.10 Voltage management modes in IEC 61850 8.10.1 IEC 61850 for TV31: dynamic reactive current support |
| 94 | 8.10.2 IEC 61850 for “must disconnect” 8.10.3 IEC 61850 for “must remain connected” Table 25 – LN RDGS – dynamic reactive current support for TV31 |
| 95 | 8.11 Watt-triggered behaviour modes in IEC 61850 8.11.1 IEC 61850 for WP41 and WP42: feed-in watts control of power factor |
| 96 | 8.12 Voltage-watt management modes in IEC 61850 8.12.1 IEC 61850 for VW51: voltage-watt management in generation and charging Table 26 – LN FPFW – set power factor by feed-in power for WP41 |
| 97 | 8.13 Non-power mode behaviours in IEC 61850 8.13.1 IEC 61850 models for temperature mode TMP 8.13.2 IEC 61850 models for pricing signal mode PS |
| 98 | 8.14 IEC 61850 reporting commands 8.14.1 IEC 61850 models for DS91: modify DER settings 8.14.2 IEC 61850 models for DS92: event/history logging |
| 99 | 8.14.3 IEC 61850 models for DS93: status reporting Table 27 – DS92 – IEC 61850 log structure |
| 101 | Table 28 – LN DRCS – DER state for DS93 Table 29 – DS93 – Status, settings, and measurement points |
| 104 | Bibliography |
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BSI PD IEC/TR 61850-90-7:2013
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