Modern approaches to developing hardware and software system for operation and emergency control of

large-scale power grid

A.B. OSAK, A.V. DOMYSHEV, E.Y. BUZINAESI SB RAS, RUSSIA

Purposes of HSS

In the project «Intelligent coordination of operation and emergency control of EU and Russian power grids» (ICOEUR) a new generation hardware and software system (HSS) has been developed to control normal and emergency states of a large-scale power grid.

The project is implemented within the Seventh Framework Programme of the European Community (EC) for research and technological development in energy.

Purposes of HSS

• Grid monitoring and analysis of power grid operation conditions.

• Automation of operation of power grid using modern techniques, methods and tools.

• Automation of emergency control of large scale power grid using modern techniques, methods and tools.

• Intelligent coordination of operation and emergency control of large scale power grid.

Functions of HSS

• Optimal operation and emergency control of power grid subject to economical conditions using modern methods and information technologies.

• Increasing efficiency and reliability of operation of interconnected power grids.

Problems of existing tools

• There are no rigorous tools for monitoring emergency control systems and devices.

• There are no advanced tools for short-term forecasting. • Insufficient reliability of emergency control systems in

global scale.• Insufficient account of the restructuring processes in the

power industry.• Insufficient adaptability and harmonization of the existing

normative documents with the rules and documents used in power grids in other countries (UCTE, NORDEL, etc.).

1-2. Monitoring and forecasting

EPS simulator

Operator workstationEmergency controller

Computation server

Communication module

Emergency control devices coordination module

EPS state controlling module

Contingency analysis module

EPS state monitoring module

Transient stability analysis module

Steady state calculation module

State estimation module

Software of emergency controller

Communication module

Visualization module

Manual input module

Ope

rato

r

Communication module

Visualization module Manual input module

Computer-aided modeling of power system

Operator

Controller

3. Existing reliability means

• Redundancy of controlling devices;• Redundancy of data transmission channels;• Power standby;• Data backup.

3. Reliability problem

Object-2

SCADA-HSS

CS-MNSSA, EA

SCADA-HSS

CS-RPSL1SSA, EA

SCADA-HSS

CS-RPSL2SSA, EA

SCADA-HSS

CS-КСУ-CR1NSC, EC

SCADA-HSS

CS-КСУ-CR2NSC, EC

SCADA-HSS

CS-КСУ-CR3NSC, EC

IS-RPSL1 IS-MN-LSG IS-RPSL2

PDC PDC

PMUECD

AFCS

AF

GDLDLRGR

Object-3

PMUECD

AFCS

AF

GDLDLRGR

Object-4

PMUECD

AFCS

AF

GDLDLRGR

Object-5

PMUECD

AFCS

AF

GDLDLRGR

Object-1

PMUECD

AFCS

AF

GDLDLRGR

Object-6

PMUECD

AFCS

AF

GDLDLRGR

IS – information systemMN – main node (of distributed system)LSG – large scale gridRPSL – regional power system levelHSS – hardware and software systemCS – computational serverSSA – steady states analysisEA – emergency analysisCCS – coordinating control systemCR – control regionNSC – normal state controllingEC – emergency controlPDC – phase date concentratorECD – emergency controlling devicePMU – phasor measurement unitAFCS – active filter controlling systemAF – active filterGD – generators disconnectionLD – load disconnectionLR – load regulationGR – generation regulation

Information level

Control level

3. Software level reliability

Ядро

Database

HMI

Archiving Interconnectionwith

externalsystems

Algorithms

Metering and controlling devices

Communicationdrivers

Applicationlevel

Applicationmanager

Real timedata base

3. Software level reliability

Application manager

Real time data base

#1

Data server

#1

Data server

#2

Data client

#2

Data client

#2

Features of HSS architecture

SCADA-HSS

CS-MNSSA, EA

SCADA-HSS

CS-RPSL1SSA, EA

SCADA-HSS

CS-RPSL2SSA, EA

SCADA-HSS

CS-КСУ-CR1NSC, EC

SCADA-HSS

CS-КСУ-CR2NSC, EC

SCADA-HSS

CS-КСУ-CR3NSC, EC

Simulator-IS-RPSL1 Simulator-IS-MN-LSG Simulator-IS-RPSL2

PDC

Object-Laboratory

PMUECD

AFCS

AF

Simulator-GD, LD, LR, GR

IS – information systemMN – main node (of distributed system)LSG – large scale gridRPSL – regional power system levelHSS – hardware and software systemCS – computational serverSSA – steady states analysisEA – emergency analysisCCS – coordinating control systemCR – control regionNSC – normal state controllingEC – emergency controlPDC – phase date concentratorECD – emergency controlling devicePMU – phasor measurement unitAFCS – active filter controlling systemAF – active filterGD – generators disconnectionLD – load disconnectionLR – load regulationGR – generation regulation

Simulator-Object-2

Simulator-ECD

Simulator-Object-3

Simulator-ECD

Simulator-Object-4

Simulator-ECD

Simulator-Object-5

Simulator-ECD

Simulator-Object-6

Simulator-ECD

Simulator-PDC

computer-aided modeling of power system

playback of recorded states of power system on emulator

Information level

Control level

4. Account of the restructuring in PS

• Division of information by type.• Determination of regulations in information exchange

between HSS nodes for every information type.• Availability of different communication technologies, in

particular existing ones in power systems.• Introduction of different abstraction levels, allowing

development of the universal software modules that are not related to specific communication technologies and data formats.

4. Account of the restructuring in PS

• Differentiation of transmitted information volumes both by technical (access control) and mathematical (distributed computations) methods.

• Possibility for artificial accuracy reduction of calculation results to preserve information confidentiality.

• Possibility to calculate generalized indices required by other participants and to transmit only these indices without source data.

• Assurance of information transmission in full volume within the confidential areas to enhance system survivability.

5. Adaptability and harmonization

• Introduction of different abstraction levels, allowing development of the universal software modules that are not related to specific communication technologies and data formats.

• Development of the algorithm modules universal over different countries.

• Development of the specialized modules for taking into account local normative documents.

Software platform for HSS

We suggest ANARES package as platform for developing HSS software and for integrating with software modules of other participants

5. Conclusion

• Presented architecture of HSS is scalable and allows further development.

• Concrete results will be presented in ICOEUR report.

Thank you for your attention