Wide Area Situation Awareness (WASA) System Utilizing the ... Documents/CIMug/Day 2... · through...
Transcript of Wide Area Situation Awareness (WASA) System Utilizing the ... Documents/CIMug/Day 2... · through...
Nov. 17, 2011 P.1Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Ryuya Tanabe, Yasuyuki Tada
TEPCO, Japan
Wide Area Situation Awareness (WASA) Demonstration System Utilizing the CIM in Japan
Nov. 17, 2011 P.2Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Contents
• Background and Scope
• WASA Demonstration System Outline and a Use Case
• WASA Brain Utilizing the CIM I/F Between WASA Brain and Nervous System of Power System (PMU/IED/PDC)•CIM I/F based on Semantic Web Technology
Application Class in WASA Brain•Control action Class in the CIM
• Conclusions
Nov. 17, 2011 P.3Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Background – WASA demonstration system
• Against a background of increasing renewable energy, the emergence of the smart grid initiative may have posed new challenges to task of solving wide‐area power system operation issues.
• Wide Area Situation Awareness (WASA) can offer power system engineers and operators an effective means to meet the goals of developing reliable, efficient, secure, robust, economical and environmentally neutral power systems.
• In Japan, a project entitled “Research for Promoting International Standardization on the Technology of WASA for Trunk Power System” has been launched.
• WASA demonstration system is prototyping to show its effectiveness in the project.
Nov. 17, 2011 P.4Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Background – How to use the CIM
• WASA architecture on how to use the CIM effectively is one of the key issues facing power system engineers.
• A framework for the communication between WASA brain (CE: Central Equipment) and nervous system of power system (PMU/PDC) is required for the WASA which can respond flexibly to changes in power system situations (make maximal use of power system capability) and will not become obsolete (will evolve itself).
• In the interoperability between CE and PMU/PDC, the framework can be built by the information model through the CIM for the harmonization of IEC 61850 and 61970.
Nov. 17, 2011 P.5Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Scope• A concept of WASA brain utilizing the CIM in Japan WASA demonstration system provides a skeleton of WASA architecture
utilizing the CIM.• A novel information handling of WASA brain is based on
Semantic Web technology in which the CIM model can be converted by a general procedure into
power system models for SCADA‐EMS applications. • To provide a novel plug‐and‐play application platform Since the information handling of WASA brain can link power system
models in real‐time database and the information models of PMU/PDC and legacy I/F,
it can enable the interoperability between applications and both IEC 61850 compliant and legacy devices.
• To provide a next‐generation WASA & Control environment with no vendor lock‐in where the portability of existing applications and the ease of installation of new applications can be promoted.
Nov. 17, 2011 P.6Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
WASA Demonstration System
• WASA demonstration system provides A skeleton of WASA architecture utilizing the CIM as a prototype to show its effectiveness.
CECentral Equipment
PDCPhasor Data Concentrator
PMU-P Class P Protection
PMU-M Class M Measurement
Power System(Real‐time Simulator)
IEDIntelligent Electric Device
IEDIntelligent Electric Device
Fault conditionsControl sequence/table/logicSetting
MeasurementStatus
MeasurementStatus Setting
MeasurementStatus
Control sequence/table/logicSetting
MeasurementStatusControl command
CE-PDC CommunicationIEC61970
PDC-PMU/IED CommunicationIEC61850-90-1IEC61850-90-5IEEE C37.118.2
PMU-IED CommunicationIEC61850-90-1IEC61850-90-5
CIM basedPower system object CE Applications
Fault conditionsControl sequence/table/logicSetting WASA brain utilizing the CIM
Whole system of WASA: No standards can be applied.
Nov. 17, 2011 P.7Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
WASA Demonstration System
• WASA brain utilizing the CIM provides Power system model and its snapshot
Power system analysis and its results
Situation awareness and design of control actions
CECentral Equipment
PDCPhasor Data Concentrator
Fault conditionsControl sequence/table/logicSetting
MeasurementStatus
Measurement Measurement
Control sSetting
CE-PDC CommunicationIEC61970
PDC-PMU/IED CommunicationPMU-IED Co
IEC6185
CIM basedPower system object CE Applications
Communication with legacy I/F
devices
Nov. 17, 2011 P.8Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Use Case: WAMPAC/IEC61850‐90‐5(TC57 WG10)(Wide Area Monitoring, Protection and Control) • Phenomenon assumption type WAMPAC Based on a pre‐fault calculation using on‐line power system information
• When a very severe fault occurs, the complete loss of an important power corridor, generators may lose synchronization with the power network.
• WAMPAC executes generator shedding or load shedding in order to avoid these types of unstable system conditions.
It may also cause overload of transmission lines or transformers.Imbalance between generation and consumption can occur.
Nov. 17, 2011 P.9Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#0 WASA Brain Utilizing the CIM
• Points on the concept
Nov. 17, 2011 P.10Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#0 WASA Brain Utilizing the CIM
• The framework of WASA can be built by the information model through the CIM for the harmonization of IEC61850 and 61970. There is no problems for distant future systems and zero‐based review. The ease of installation of “new applications” can be promoted.
• However, it takes a long time to change from all “legacy type interfaces” to
IEC61850 compliance. “Existing applications” are indispensable for operating power systems.
• The issues based on the current situation are as follows; Provide a WASA architecture to enable a coexistence with the CIM
compliance and legacy type I/F. Provide a flexible WASA architecture to promote the portability of
existing applications.
Nov. 17, 2011 P.11Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#0 WASA Brain utilizing the CIM#1 I/F Between
WASA Brain and Power System
Power System
Power System +
PDCs/PMUs/IEDs
Uplink information Power System Snapshot
CE Applications
#3 Application Class in WASA Brain
Downlink information
#2 CIM I/F based on Semantic Web
Technology
Data Merging Process to provide
a power system objectLegacy
Situation AwarenessDesign of control actions
#4 Control ActionClass
#1 I/F Between WASA Brain and Power System
• WASA brain requires a snapshot varying from hour to hour which is a set of data reflecting the situation of power system. The snapshot requires a data
merging process to integrate the CIM, PMU/IED/PDC and legacy device information.
• WASA brain provides control actions based on a situation awareness based on results of applications. The control action requires a
control action class to update its control actions in power systems.
Nov. 17, 2011 P.12Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#2 CIM I/F based on Semantic Web Technology
• Power system analysis should be required a variety of information such as CIM, phasors, dynamic models and legacy devices.
• This transaction needs to merge the above information into power system object for analyzing power systems.
Nov. 17, 2011 P.13Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#2 CIM I/F based on Semantic Web Technology
• Information model of I/F with any external systems The CIM added a I/F with external systems can link the external systems
such as PDC/PMU/IED to the CIM.
• Data Merging Process based on Semantic Web Technology RDF conversion can copy the necessary information from CIM DB.
Model Script can assemble power equipment in power system models.
Data merging process can provide a snapshot which can reflect data from PDC and legacy devices.
CIM DB
RDF conversion Model Script(python)
Snapshot
Power System Object
PDC information
Data merging process
I/F between CIM and PDC/IED Link PDCs to the CIMI/F between CIM
and Legacy
Legacy information
Link PDCs to the CIM
General Procedure based on de facto standard
Nov. 17, 2011 P.14Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#3 Application Class in WASA Brain
• “Existing applications”are indispensable for analyzing and operating power systems.
• Power system analysis consists of a lot of types of applications (use cases), such as security assessment, operation optimization and design control actions.
Nov. 17, 2011 P.15Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#3 Application Class in WASA Brain
• The definition of functions of applications based on accumulating use cases is necessary to provide a plug‐and‐play application platform.
PDCPhasor Data Concentrator
Dynamic model
Snapshot
Dynamic model
Data merging
Visualization
Control command
e.g.Unit commitment
Economic dispatching
CIM DB
e.g. Loss minimum controlLoad frequency control
Power system situation
e.g.Preventive controlEmergency control
Economy assessment
Sequrity assessment
Environmental indicator
Optimal operation
point
Power system object
Situation Awareness
Data merging
State Estimation
Legacy information
Nov. 17, 2011 P.16Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
#4 Control Action Class in the CIM• WASA brain provides control actions based on a situation
awareness.• However, there is no downlink information class in the CIM to
power systems.• The control action requires a control action class to update its
control actions. To provide a novel plug‐and‐play application platform To provide a next‐generation WASA & Control environment with no
vendor lock‐in
Nov. 17, 2011 P.17Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Conclusions
• WASA Brain Utilizing the CIM I/F Between WASA Brain and Power System
• It is necessary to provide a WASA architecture to enable a coexistence with the CIM compliance and legacy type I/F, and
a flexible WASA architecture to promote the portability of existing applications.
Application Class in WASA Brain and Control Action Class• These are necessary to provide a plug‐and‐play application platform.
• The technology of WASA utilizing the CIM can provide a next‐generation WASA & Control environment with no vendor lock‐in where the portability of existing applications and the ease of installation of new applications can be promoted.
Nov. 17, 2011 P.18Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved.
Thank you for your [email protected]
TEPCO really appreciate your kind support !