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Xanthus Consulting International

PV/Storage Inverter Functions

EPRI Project andNIST Priority Action Plan: PAP 7

Frances Cleveland



HAN / CustomerSite

Market Operation Apps

60870-6-503App Services

SCADA Apps EMS Apps DMS Apps Engineering & Maintenance Apps

ExternalIT Apps

Data Acquisition and Control Front-End / Gateway / Proxy Server / Mapping Services / Role-based Access Control

61850-8-1Mapping to MMS

TC13 WG14

Meter Standards

61334

60870-5101&

104

61970 Component Interface Specification (CIS) 61968 SIDMS for Enterprise Application Integration (EAI)

61970 / 61968 Common Information Model (CIM)

Inter-Application Messaging Middleware, ebXML, and Web Services (specified in XML; mapped to appropriate protocols)

61850 Substation Devices

61850 DADER at

Customer Sites

60870-6TASE.2

Other Control Centers

60870-5RTUs or

SubstationSystems

IEDs, Relays, Meters, Switchgear, CTs, VTs

End

-to-E

nd S

ecur

ity S

tand

ards

and

Rec

omm

enda

tions

(wor

k in

pro

gres

s)

Current TC57 Reference Architecture – Scope and Layers

External Systems(Symmetric client/server

protocols)

Specific Communication Services Mappings

Specific Object Mappings

ApplicationInterfaces

Equipment AndSystem Interfaces

Telecontrol Communications

Media and Services

Communication Industry Standard Protocol Stacks(ISO/TCP/IP/Ethernet)

XMLMessaging

(work inprogress)

Protocol Profiles

Web Services SEP 2.0

WANCommunications

Media and Services

FieldDevices

Utility CustomersEnergyMarket Participants Other Businesses

Application To Application (A2A)and Business To Business

(B2B) Communications

Utility Service Providers

Net

wor

k, S

yste

m, a

nd D

ata

Man

agem

ent

(futu

re)

TC13 WG14

*Notes: 1) Solid colors correlate different parts of protocols within the architecture.2) Non-solid patterns represent areas that are future work, or work in progress, or related work provided by another IEC TC.

61850-7-2 ACSI

61850-7-3, 7-4 Object Models

CustomerMeters

Peer-to-Peer 61850 overSubstation bus and Process bus

60870-6-802Object Models

60870-6-703Protocols

Field Object Models


HAN / CustomerSite

Market Operation Apps

60870-6-503App Services

SCADA Apps EMS Apps DMS Apps Engineering & Maintenance Apps

ExternalIT Apps

Data Acquisition and Control Front-End / Gateway / Proxy Server / Mapping Services / Role-based Access Control

61850-8-1Mapping to MMS

TC13 WG14

Meter Standards

61334

60870-5101&

104

61970 Component Interface Specification (CIS) 61968 SIDMS for Enterprise Application Integration (EAI)

61970 / 61968 Common Information Model (CIM)

Inter-Application Messaging Middleware, ebXML, and Web Services (specified in XML; mapped to appropriate protocols)

61850 Substation Devices

61850 DADER at

Customer Sites

60870-6TASE.2

Other Control Centers

60870-5RTUs or

SubstationSystems

IEDs, Relays, Meters, Switchgear, CTs, VTs

End

-to-E

nd S

ecur

ity S

tand

ards

and

Rec

omm

enda

tions

(wor

k in

pro

gres

s)

Current TC57 Reference Architecture – Scope and Layers

External Systems(Symmetric client/server

protocols)

Specific Communication Services Mappings

Specific Object Mappings

ApplicationInterfaces

Equipment AndSystem Interfaces

Telecontrol Communications

Media and Services

Communication Industry Standard Protocol Stacks(ISO/TCP/IP/Ethernet)

XMLMessaging

(work inprogress)

Protocol Profiles

Web Services SEP 2.0

WANCommunications

Media and Services

FieldDevices

Utility CustomersEnergyMarket Participants Other Businesses

Application To Application (A2A)and Business To Business

(B2B) Communications

Utility Service Providers

Net

wor

k, S

yste

m, a

nd D

ata

Man

agem

ent

(futu

re)

TC13 WG14

*Notes: 1) Solid colors correlate different parts of protocols within the architecture.2) Non-solid patterns represent areas that are future work, or work in progress, or related work provided by another IEC TC.

61850-7-2 ACSI

61850-7-3, 7-4 Object Models

CustomerMeters

Peer-to-Peer 61850 overSubstation bus and Process bus

60870-6-802Object Models

60870-6-703Protocols

Field Object Models

CIM Modeling Domain

IEC 61850 Modeling Domain


DER (Generation and Storage) Functions and Interactions• DERs will provide:

– Energy (real power) from generators and from storage units– Reactive power support (volt/var support) to both distribution and

transmission efficiency and stability– Combined generation and storage can provide rapid response to

mitigate intermittent renewable resources like wind and solar– Low voltage ride-through, emergency reserves, harmonic-

damping– Rapid response to frequency deviations

• DER will be managed:– By customers for their own exclusive use– Through direct control by utilities or aggregators– Through market-driven bids, with direct control by utilities– Through market-driven, tariff-based demand response


Different DER Interactions: Direct Control, Interactive Requests, Broadcast/Multicast

DER Integrated System

DER Generator

DER Storage

Controller

Controller

DER Energy Management System

at Utility Site or Customer Site

Utility/ESP DER Management System

Distributed Energy Resources (DER) Site

One-way Broadcast/Multicast

Loosely-coupled Two-way Interactive

Requests

Tightly-coupled Direct Control

Tightly-coupled Direct Control

DER Management: Interactions between Components


Requests


Requests


DER Key Use Cases Must Cope with Many Different Configurations• Direct, tightly-coupled control

– Between inverter controller and ES-DER device– Between Customer EMS and multiple ES-DER devices

in a building, subdivision, or campus

• Interactive two-way monitoring and control– Between ISO/RTO and ES-DER system whose bid has

been accepted– Between Customer EMS and multiple ES-DER systems

with their own (sophisticated) controllers

• Broadcast/multicast one-way “pricing” or “request” signals– Between utility and Customer EMS– Between aggregator and ES-DER systems


PV/Storage Inverter-based System Phase 1 Functions and InteractionsPhase 1 Functions• Connect/Disconnect from grid

• Limit maximum generation

• Set power factor

• Var settings, based on voltage

• Var settings, based on watts

• Storage charge / discharge rate (fast PEV chargers??)

• “Pricing” signal

• Event / history logging

• State / status reporting

• Time synchronization

Interaction• Direct command

• Immediate request

• Change settings

• Schedule of settings based on time

• Schedule of settings based on temperature

Phase 2 Functions• Low voltage ride-through!!

• Counteracting frequency deviation

• Other


One PV/Storage Inverter Mode


IEC 61850-7-420 for DER

• IEC 61850 – Interface Standard of Object Models for Utility Industry– Very modular– Establishes “well-known” standardized names, data formats, and services– Initially focused on substation automation, but now being expanded

• IEC 61850-7-420 for DER– Addresses only the “Nouns”– IEC 61850 object modeling constructs of LNs, etc:

• Covers:– General DER management– Photovoltaic systems– Fuel cells– Diesel generation– Combined heat and power– Wind power is handled separately (IEC 61400-25)

• Currently status is Final Draft International Standard (FDIS)– Due to become International Standard (IS) by mid-2008

Logical Nodes

Common Data Class

Common ComponentsStandard Data Types

Logical Nodes (LN)

Common Data Classes (CDC)

Common Attributes

Logical Devices (LD)

Data Objects (DO)


Possible Inverter Logical Device

DER Schedule 1‐

12DSSCnDER Schedule 1‐

12DSSCn

Volt/VAR Modes1‐10FVVAnVolt/VAR Modes1‐10FVVAnFVVAn

Connect /

Disconnect ModeDOPM1

Max Generation

ModeDOPM2

Power FactorAngle ModeDOPM3

Charge/Discharge

Rate ModeDOPM4

Volt/VAR Curve

ModeDOPM5

DER Supervisory

ControlDRCC1

DER Controller

StatusDRCS1Connect /

Disconnect SwitchCSWI1

DER Controller

CharacteristicsDRCT1

InverterZINV1

DER Economic

DispatchDCCT1

Battery StorageZBAT1

Measurements ‐

OutputMMXU1

Measurements ‐

GridMMXU2

Status at

Connection

PointDPST1

DER Schedule

ControlDSSC1

Volt/VAR Array1‐10FVVAn

Setpoints

Activate

DER Schedule 1‐

12DSSCn

Select Array

Timers

Setpoints

Max/Min

Price

Connection State

Mode State

Local/Remote State

Setpoints

directindirect

Relationships:


Mapping to DNP3


Common Data Classes Logical Nodes

UML Diagrams of IEC 61850 – CDCs, Data Sets, and Logical Nodes – Being Used for Mapping to SEP 2.0


IEC 61850-7-420 Abstract Information Models (Italic indicates new DO)

DOPM


DRCC


New LN: FVVA – Scheduling with Pairs of Volt/Var Settings


DSCH Schedule by Temperature Range


SCR – Relative time schedule settings


Activation of Schedules


Discussions??? !!!

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