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PD IEC TR 61850-90-7:2023 - TC Tracked Changes. Communication networks and systems for power utility automation - Object models for power converters in distributed energy resources (DER) systems, 2023
- 30481467
- A-30480207 [Go to Page]
- undefined
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, acronyms and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Acronyms
- 3.3 Abbreviated terms
- 4 Overview of power converter-based DER functions [Go to Page]
- 4.1 General
- 4.2 Power converter configurations and interactions
- 4.3 Power converter methods
- Figures [Go to Page]
- Figure 1 – DER management hierarchical interactions:autonomous, loosely-coupled, broadcast/multicast
- 4.4 Power converter functions
- 4.5 Differing DER architectures [Go to Page]
- 4.5.1 Conceptual architecture: electrical coupling point (ECP)
- 4.5.2 Conceptual architecture: point of common coupling (PCC)
- 4.5.3 Utility interactions directly with power converters or indirectly via a customer EMS
- 4.5.4 Communication profiles
- Figure 2 – Electrical Connection Points (ECP)and Point of Common Coupling (PCC)
- 4.6 General sequence of information exchange interactions
- 5 Concepts and constructs for managing power converter functions [Go to Page]
- 5.1 Basic settings of power converters [Go to Page]
- 5.1.1 Nameplate values versus basic settings
- 5.1.2 Power factor and power converter quadrants
- Tables [Go to Page]
- Table 1 – Producer Reference Frame (PRF) conventions
- Figure 3 – Producer and Consumer Reference Frame conventions [Go to Page]
- 5.1.3 Maximum watts, vars, and volt-amp settings
- Figure 4 – EEI power factor sign convention [Go to Page]
- 5.1.4 Active power ramp rate settings
- Figure 5 – Working areas for different modes [Go to Page]
- 5.1.5 Voltage phase and correction settings
- 5.1.6 Charging settings
- 5.1.7 Example of basic settings
- Figure 6 – Example of voltage offsets (VRefOfs)with respect to the reference voltage (VRef) [Go to Page]
- 5.1.8 Basic setting process
- 5.2 Modes for managing autonomous behaviour [Go to Page]
- 5.2.1 Benefits of modes to manage DER at ECPs
- Table 2 – Example basic settings for a storage DER unit [Go to Page]
- 5.2.2 Modes using curves to describe behaviour
- Figure 7 – Example of modes associated with different ECPs [Go to Page]
- 5.2.3 Paired arrays to describe mode curves
- Figure 8 – Example of a volt-var mode curve [Go to Page]
- 5.2.4 Percentages as size-neutral parameters: voltage and var calculations
- 5.2.5 Hysteresis as values cycle within mode curves
- 5.2.6 Low pass exponential time rate
- Figure 9 – Example of hysteresis in volt-var curves
- Figure 10 – Example of deadband in volt-var curves [Go to Page]
- 5.2.7 Ramp rates
- 5.2.8 Randomized response times
- Figure 11 – Local function block diagram
- Figure 12 – Time domain response of first order low pass filter [Go to Page]
- 5.2.9 Timeout period
- 5.2.10 Multiple curves for a mode
- 5.2.11 Multiple modes
- 5.2.12 Use of modes for loosely coupled, autonomous actions
- 5.3 Schedules for establishing time-based behaviour [Go to Page]
- 5.3.1 Purpose of schedules
- 5.3.2 Schedule components
- 6 DER management functions for power converters [Go to Page]
- 6.1 Immediate control functions for power converters [Go to Page]
- 6.1.1 General
- Figure 13 – Interrelationships of schedule controllers,schedules, and schedule references [Go to Page]
- 6.1.2 Function INV1: connect / disconnect from grid
- 6.1.3 Function INV2: adjust maximum generation level up/down
- 6.1.4 Function INV3: adjust power factor
- 6.1.5 Function INV4: request active power (charge or discharge storage)
- 6.1.6 Function INV5: pricing signal for charge/discharge action
- 6.2 Modes for volt-var management [Go to Page]
- 6.2.1 VAr management modes using volt-var arrays
- 6.2.2 Example setting volt-var mode VV11: available var support mode with no impact on watts
- Figure 14 – Volt-var mode VV11 – available vars mode [Go to Page]
- 6.2.3 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 [Go to Page]
- 6.2.4 Example setting volt-var mode VV13: static power converter mode based on settings
- Figure 16 – Power converter mode VV13 –Example: static var support mode based on VArMax [Go to Page]
- 6.2.5 Example setting volt-var mode VV14: passive mode with no var support
- 6.3 Modes for frequency-related behaviours [Go to Page]
- 6.3.1 Frequency management modes
- 6.3.2 Frequency-watt mode FW21: high frequency reduces active power
- Figure 17 – Frequency-watt mode curves
- Figure 18 – Frequency-based active power reduction [Go to Page]
- 6.3.3 Frequency-watt mode FW22: constraining generating/charging by frequency
- Figure 19 – Frequency-based active power modification with the use of an array
- Figure 20 – Example of a basic frequency-watt mode configuration
- Figure 21 – Example array settings with hysteresis
- Figure 22 – Example of an asymmetrical hysteresis configuration
- 6.4 Dynamic reactive current support during abnormally high or low voltage levels [Go to Page]
- 6.4.1 Purpose of dynamic reactive current support
- 6.4.2 Dynamic reactive current support mode TV31: support during abnormally high or low voltage levels
- Figure 23 – Example array configuration for absorbed watts vs. frequency
- Figure 24 – Basic concepts of the dynamic reactive current support function
- Figure 25 – Calculation of delta voltage over the filter time window
- Figure 26 – Activation zones for dynamic reactive current support
- Figure 27 – Alternative gradient behaviour, selected by ArGraMod
- Figure 28 – Settings to define a blocking zone
- 6.5 Low/high voltage ride-through curves for “must disconnect” and “must remain connected” zones [Go to Page]
- 6.5.1 Purpose of L/HVRT
- 6.5.2 “Must disconnect” (MD) and “must remain connected” (MRC) curves
- Figure 29 – Must disconnect and must remain connected zones
- Figure 30 – Examples of “must remain connected” requirements for different regions
- 6.6 Modes for watt-triggered behaviours [Go to Page]
- 6.6.1 Watt-power factor mode WP41: feed-in power controls power factor
- 6.6.2 Alternative watt-power factor mode WP42: feed-in power controls power factor
- Figure 31 – Power factor controlled by feed-in power
- 6.7 Modes for voltage-watt management [Go to Page]
- 6.7.1 Voltage-watt mode VW51: voltage-watt management: generating by voltage
- 6.7.2 Voltage-watt mode VW52: voltage-watt management: charging by voltage
- Figure 32 – Example configuration curve for maximum watts vs. voltage
- 6.8 Modes for behaviours triggered by non-power parameters [Go to Page]
- 6.8.1 Temperature mode TMP
- 6.8.2 Pricing signal mode PS
- Figure 33 – Example configuration curve for maximum watts absorbed vs. voltage
- 6.9 Setting and reporting functions [Go to Page]
- 6.9.1 Purpose of setting and reporting functions
- 6.9.2 Establishing settings DS91: modify power converter-based DER settings
- 6.9.3 Event logging DS92: log alarms and events, retrieve logs
- Table 3 – Events [Go to Page]
- 6.9.4 Reporting status DS93: selecting status points, establishing reporting mechanisms
- Table 4 – Examples of status points
- Bibliography [Go to Page]
