Transcript CIM for Planning and Dynamic Model Exchange

CIM for Planning and
CIM for Dynamic Models
- Project Report
Terry Saxton
Xtensible Solutions
[email protected]
CIM User Group
Vasteras, Sweden
June 13, 2008
EPRI CIM for Planning and
Dynamic Models Project
EPRI CIM Planning Project
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EPRI initiated project in October 2006
Funded by ten utilities and multiple vendors
Objectives
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Develop a common power system network model
that both operations and planning groups can use
as a basis for information exchange
Provide the possibility of entering network model
data once for both planning and operations
applications
EPRI CIM for Planning and
Dynamic Models Project
Needs Addressed
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Improve reliability of transmission grid
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How?
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Enable the management and maintenance of a single, common
network model for use by both planning and operations
Enable the sharing of steady state, short circuit, and dynamic
models
Technical Approach
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Strengthen planning efforts based on actual network contingencies
and base conditions
Enable planning studies to be based on actual physical network
with all current field changes incorporated
Extend the IEC 61968/70 Common Information Model (CIM)
Standard
Started with defining high priority use cases
EPRI CIM for Planning and
Dynamic Models Project
Use Cases: P-P
Planning
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Export a static network model from one planning
software program to another to transfer a planning
base case for additional study by another party
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Planning
Steady State model (completed)
Short Circuit model (partially completed)
Dynamic data models (preliminary investigation begun)
Cases may be transferred either within one
organization, or between two separate organizations
(i.e. RTO – utility)
EPRI CIM for Planning and
Dynamic Models Project
Use Cases: O-P
Planning
Planning
Operations
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EPRI CIM for Planning and
Dynamic Models Project
Use Cases – Operations to Planning
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Import a state estimator or load flow case from the Energy
Management System into the planning environment
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Export Contingency Specifications from the EMS or another
application for use by the planning application(s)
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Allows coordination between the contingencies used by operations and
transmission planning as well as generation planning
Export Load Forecast data from the EMS or another application for
use by the planning application(s)
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This would allow coordination between the contingencies used by
operations and transmission planning as well as generation planning
Convert the contingency low side load rollover used in the EMS
application(s) to the contingency load rollover used in the planning
application(s)
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To establish a planning base case for additional study or for developing a
current planning model
This will provide correct conversion between the models used by
operations and transmission planning as well as generation planning
EPRI CIM for Planning and
Dynamic Models Project
Use Cases: P-O
Planning
Planning
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Operations
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Export detailed
dynamic model
data to EMS (e.g.,
voltage stability
analysis) for realtime dynamic
assessment
analysis
EPRI CIM for Planning and
Dynamic Models Project
Profiles and Interfaces
Planning
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Planning
NMMR
Historian
Operations
NMMR
1. Project Repository
2. As-build Network Model
3. Historical Data
EPRI CIM for Planning and
Dynamic Models Project
Accomplishments and Benefits
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Brought key suppliers of planning applications and EMS
together with utilities to achieve stated objectives
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Achieved agreements on CIM representation of steady state
and short circuit models for exchange
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Two workshops conducted
Task Forces prepared use cases for the information exchange
between planning and operations and a central network model
manager
Most reuse of existing CIM classes with some new extensions
Conducted multiple conference calls to resolve issues identified by
project members
Collaborated closely with current RTO/ISO/utility projects with
similar goals
EPRI CIM for Planning and
Dynamic Models Project
Accomplishments and Benefits
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Extended CIM to support the new integration frameworks that
incorporate a centralized network model repository and
manager
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Makes possible single entry of network model changes for use in
both planning and operations environments
Enables sharing of models between planning and operations
Enables standard interfaces based on CIM/XML/RDF
Directly supports current ERCOT efforts and stated goals of other
RTO/ISOs and member utilities
Defined new profiles for CIM Planning information exchange
Interoperability tests are planned
Proposed CIM extensions and issue resolutions submitted to
IEC
EPRI CIM for Planning and
Dynamic Models Project
CIM Extensions – New Classes
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Contains 10 new Classes in the new
Planning Package:
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BranchGroup
BranchGroupTerminal
CorrectionValue
Loss Factor
Mutual Coupling
Ownership
Planning Area
PlanningZone
PlanningZoneGroup
WindingImpedanceCorrection
EPRI CIM for Planning and
Dynamic Models Project
CIM Extensions – New Classes (Cont’d)
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Contains 1 new Class in the Topology
Package:
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Contains 1 new Planning Class in the Wires
Package:
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SwitchedShunt
Contains 1 New Planning Class in the Meas
Package:
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ConnectivityNodeGroup
EquipmentRating
EPRI CIM for Planning and
Dynamic Models Project
New Attributes
Each new class from the Planning Package
contains one or more attributes
Added new attributes to Existing Classes:
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ShuntCompensator
EnergyConsumer
PowerSystemResource
GeneratingUnit
TransformerWinding
SynchronousMachine
EPRI CIM for Planning and
Dynamic Models Project
CIM for Dynamic Models
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New EPRI project – started March 2008
Project Objectives
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Develop a common model and set of interface
profiles based on the CIM that supports the
exchange of dynamic models and data between
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different planning applications and equipment suppliers
planning applications and operations
EPRI CIM for Planning and
Dynamic Models Project
Business Needs
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Conduct dynamic assessment studies
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Studies involve simulations which require dynamic
models of generators, loads, other network devices
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Contingency analysis
Evaluation of conditions leading up to a catastrophic event
Determine where network upgrades are needed
Models far more detailed than those used for load flow
studies
Dynamic models becoming more complex with multiple
variations
EPRI CIM for Planning and
Dynamic Models Project
Business Needs (cont’d)
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New plant commissioning
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Operating utility must round up various dynamic
models in various formats (e.g., PSLF or PSSE)
New equipment requires new models from
supplier
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Multiple sources of data from different
systems needed for dynamic models
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May entail research from equipment manuals
Followed by manual tweaking for custom changes
Ex: Transformer test reports stored in Asset
Management system
EPRI CIM for Planning and
Dynamic Models Project
Types of Dynamic Model Exchanges
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Standard models
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Several approved lists (IEEE, WECC, RFC)
Include multiple models for following categories:
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User-Defined models
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Generators (including wind turbines)
Motors
Excitation systems, limiters, and compensators
Turbine/govenor models
Stabilizers
Loads
Transmission devices
Relay and protection devices
HVDC
Decomposed blocks for user-written models with parameters
EPRI CIM for Planning and
Dynamic Models Project
Project Teams Created
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Three project teams were created to
accomplish the majority of the work on the
project
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Standard Model Team: Lead - Bill Price
User-Defined Model Team: Lead - Chuck Dubose
CIM Modeling Team: Lead – Kendall Demaree
Other project members not in attendance are
invited to join a team
EPRI CIM for Planning and
Dynamic Models Project
Project Work Accomplished
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First cut made at requirements for dynamic
model exchange
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Will lead to compilation of data elements for
exchange profile
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Draw heavily on existing PSSE and PSLF file formats
currently in use
New project participant DigSilent has additional file
format to consider
New inputs from UCTE and Eurostag
Next step is mapping to CIM
EPRI CIM for Planning and
Dynamic Models Project
Requirements for Standard Models
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Name of model
Associated bus number and unit ID in static network model (bus name and kV
optional)
MVA base (or MW capability) value
System parameter values. For example for generators:
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D-axis transient rotor time constant
Q-axis transient rotor time constant
Inertia constant, sec
Damping factor, pu
D-axis synchronous reactance
Q-axis synchronous reactance
D-axis transient reactance
Q-axis transient reactance
Stator leakage reactance, pu
Saturation factor at 1 pu flux
Saturation factor at 1.2 pu flux
Stator resistance, pu
Compounding resistance for voltage control, pu
Compounding reactance for voltage control, pu
EPRI CIM for Planning and
Dynamic Models Project
Associating Dynamic Models to Static Load Flow
Model
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UML modeling requirements captured
CNG
Dynamic Models
Synchronous
Machine
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V, θ
Generating Unit
PSS
Generator
Ireal, Iimag
Exciter
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EPRI CIM for Planning and
Dynamic Models Project
Connectivity Modeling Between Control Blocks
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Proposal for CIM modeling approach
PowerSystem
Resource
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Control Block
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Block Input
Block Output
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0..1
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0..1
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Signal
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0..1
Measurement
EPRI CIM for Planning and
Dynamic Models Project
Key Artifacts to be Produced
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Proposed extensions to CIM UML information model
Proposed modeling approach to handle dynamic
models
New exchange profiles for the various exchanges
between planning applications, operations advanced
applications, asset management, and equipment
manufacturers
Standard definition for base cases from operations
Template for equipment suppliers to provide dynamic
models
EPRI CIM for Planning and
Dynamic Models Project
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