Wide Area Situation Awareness (WASA) Demonstration System Utilizing the CIM in Japan

Transcription

1 Wide Area Situation Awareness (WASA) Demonstration System Utilizing the CIM in Japan Ryuya Tanabe, Yasuyuki Tada TEPCO, Japan Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.1

2 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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.2

3 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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.3

4 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 and Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.4

5 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 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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.5

6 WASA Demonstration System WASA demonstration system provides A skeleton of WASA architecture utilizing the CIM as a prototype to show its effectiveness. CIM based Power system object Measurement Status Measurement Status PMU-M Class M Measurement CE Central Equipment CE-PDC Communication IEC61970 PDC Phasor Data Concentrator PDC-PMU/IED Communication IEC IEC IEEE C PMU-P Class P Protection CE Applications Setting Fault conditions Control sequence/table/logic Setting IED Intelligent Electric Device Control sequence/table/logic Setting PMU-IED Communication Measurement IEC Status IEC Fault conditions Control sequence/table/logic Setting WASA brain utilizing the CIM IED Intelligent Electric Device Measurement Status Control command Power System (Real time Simulator) Whole system of WASA: No standards can be applied. Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.6

7 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 CIM based Power system object CE Central Equipment CE Applications Measurement Status Communication with legacy I/F devices Measurement CE-PDC Communication IEC61970 PDC Phasor Data Concentrator PDC-PMU/IED Communication Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.7 Fault conditions Control sequence/table/logic Setting Control s Setting PMU-IED Co Measurement IEC6185

8 Use Case: WAMPAC/IEC (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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.8

9 #0 WASA Brain Utilizing the CIM Points on the concept Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.9

10 #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 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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.10

11 #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 Power system. System The snapshot requires a data merging process to integrate the CIM, PMU/IED/PDC and legacy device information. Power System + PDCs/ PMUs/ IEDs Legacy Uplink 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 Downlink update its control actions in information power systems. #0 WASA Brain utilizing the CIM #1 I/F Between WASA Brain and Power System #2 CIM I/F based on Semantic Web Technology Data Merging Process to provide a power system object #4 Control Action Class Power System Snapshot CE Applications #3 Application Class in WASA Brain Situation Awareness Design of control actions Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.11

12 #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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.12

13 #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. I/F between CIM and Legacy CIM DB I/F between CIM and PDC/IED Link PDCs to the CIM PDC information Link PDCs to the CIM RDF conversion Model Script (python) Power System Object Legacy information General Procedure based on de facto standard Data merging process Snapshot Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.13

14 #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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.14

15 #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. CIM DB Economy assessment Data merging State Estimation Data merging Sequrity assessment Situation Awareness Legacy information Dynamic model Snapshot Power system object Environmental indicator Visualization PDC Phasor Data Concentrator Dynamic model Power system situation Control command e.g. Unit commitment Economic dispatching e.g. Preventive control Emergency control e.g. Loss minimum control Optimal operation point Load frequency control Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.15

16 #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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.16

17 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 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.17

18 Thank you for your attention! TEPCO really appreciate your kind support! Nov. 17, 2011 Copyright 2011 The Tokyo Electric Power Co., Inc. All rights reserved. P.18