v&r energy’s project under prsp: grid operator’s monitoring & control assistant (gomca)...
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V&R Energy’s Project under PRSP:Grid Operator’s Monitoring & Control
Assistant (GOMCA)
Marianna Vaiman, V&R [email protected]
JSIS MeetingSeptember 22, 2015
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Project TeamProject Participants - BPA, CAISO, IPC, Peak, SCE, SDGEReal-time monitoring and control based on the Region Of Stability Existence (ROSE) platform:– ROSE defines the range of phasor measurements or other system
parameters for which the system may securely operate in terms of the accepted N-k security criteria
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GOMCA Project ObjectivesDemonstration of V&R Energy’s Liner State Estimator (LSE) on realistic WECC network, including:– Observability analysis;– Bad synchrophasor data detection and conditioning; – Validation of cases created by LSE and their applicability to voltage stability analysis;– Based on the methods and algorithms that V&R demonstrated during NASPI Voltage
Stability Workshop.
Measurement-based analysis:– Measurement-based voltage stability analysis;– Automatic determination of corrective remedial actions;– Situational awareness wall to visualize in an easy effective way synchrophasor data, and
results of voltage stability analysis;
ROSE integration with EMS/PDC systems of the project participants;ROSE EnhancementsTechnology transfer to project participants, training workshop.
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Proposed High Level Architecture PRSP – Voltage Stability
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Source: SCE
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LSE – Related TasksLSE at Idaho Power:– Prototype LSE study includes:
Observability study;Methodology for identifying additional PMU locations;Bad data analysis and detection using LSE;
– LSE cases for IPCLSE at CAISOLSE at SDGE LSE at SCELSE at PeakMeasurement-based voltage stability analysis Measurement-based corrective actionsBuilding situational awareness wall
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Peak-ROSE – Related TasksPeak-ROSE VSA software integration at IPCPeak-ROSE VSA software integration at SDGEPeak-ROSE VSA software integration at SCEAll project participants will use the same WSM model provided by Peak:– Cases are provided via an automated process– Available every 5 minutes
Peak-ROSE (“hybrid” ROSE) enhancementsTechnology transfer
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Linear State EstimatorWorking with each participant:– To perform observability study
MODEL WILL BE NEEDEDInvolves use of the SE data
– Validation of the results of LSE for participant’s network/PMU installation;
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Linear State Estimator (cont.)Incorporating algorithms for bad data detection and conditioning into LSE;Test the quality of the algorithms/data;Analyze the applicability of the cases created by LSE for voltage stability analysis;Do changes to LSE process, if needed, to create cases suitable for voltage stability analysis.
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“Hybrid” Peak-ROSE EnhancementsPeak prepared a list of enhancementsCoordinated with V&RPeak/V&R work closely with WECC entities to incorporate current modeling practices into WSM file and Peak-ROSE VSA analysis
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“Hybrid” ROSE IntegrationThe same computational functionalities as in Peak-ROSEInstalled at project participants' sitesModeling of additional scenarios for voltage stability assessment with each participant
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Measurement-Based Analysis and Visualization
Voltage stability analysisAutomated corrective actions:– Automatically determine corrective actions– Work with participants:
To implement remedial actions for their system;Validate the results of automated computations.
Building situational awareness wall:– Displaying the results of the analyses via easy-to-understand GUI;– Customization for each participant.
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ROSE ImplementationsModel - based ROSE:– State Estimator data is required at the rate available at the entity using the
application, usually 3 to 5 minutes.
“Hybrid”- based ROSE:– Phasor and State Estimator data sets are required:
Phasor data at the rate available at the entity using the application, usually 30 samples/second.State Estimator data at the rate available at the entity using the application, usually 3 to 5 minutes.Implemented at Peak
Measurement - based ROSE:– Phasor data is required the rate available at the entity using the application,
usually 30 samples/second.– Will be demonstrated using the DOE project
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ROSE Software
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State Estimator is a part of the ROSE software.Can use V&R’s SE or export from an EMS vendorModel-based and measurement-based & hybrid State Estimator
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“Hybrid”- ROSE ArchitectureTwo analysis modes: Real-Time and Off-LineInputs are:– State Estimator (SE) data, synchrophasor data, and additional
files to perform voltage stability analysis (VSA)
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Real-Time Mode
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EMS
ROSENode-breaker model
Alarming/Archiving/ Visualization via Web Client
PDC
Synchronization with EMS and automatic reading of SE files (WSM Export) every 5 minutes;Using synchrophasor data in C37.118;Server-client application;Running as a service 24/7.
Customized output; alarming; archiving;Output is in the format that is easily integrated with other applications.
AC contingency analysis with real-time RAS; Computes interface limits;Performs PV-curve/QV-curve analysis.
“Hybrid” ROSE Implementation at Peak
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Measurement – Based ROSE ArchitectureOne main input is synchrophasor dataAdditionally, we will need a power flow case to obtain model parameters, locations of PMUs, and additional files to perform voltage stability analysis (VSA)
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Measurement – Based ROSEBased on cases created by Linear State Estimator
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Uses of LSEThe algorithms for new LSE were developed by V&R Energy:– Demonstration/validation for a realistic power system network
will be performed during the current DOE project.LSE is based on PMU measurements of voltage and current:– Orthogonal component of voltage and current vectors is
considered as the state variable Advantages of LSE:– Speed of state estimation due to using a direct non-iterative
solution;– Improving quality of PMU data.– May replace conventional State Estimator (SE) when SE looses
its output.