ACS

State Estimator

Design Features

Any real-time Real Time Market and Security Assessment component of an Energy Management System (EMS) is dependent on a fast and robust State Estimator. This includes Nodal Price Computing and Contingency Analysis. With operating conditions constantly being stressed near their limits, the demand for more accurate real-time snapshots of our power networks is greater than ever.  The BSI State Estimator addresses the concerns that current operator’s face with state of the art solutions. 

 

Measurement data that are received by SCADA systems are bound to contain errors, either small or large in magnitude. Within the high redundancy of measurements, sufficiently corrupted data must be identified and removed. This is a key process in finding an accurate estimate of the network state. However, the manner of identifying this “bad data” is dependent on the optimal formulation of the desired solution. By offering multiple formulations, we can provide different solutions that are tailored to the criteria of the system operator. For example, if the operator desires to see a state estimation that corresponds to a smaller maximum measurement residual compared to the solution of other products, the BSI-SE can provide such an answer. 

 

Current State Estimation installations do not guarantee system operators the quality level of their routine estimation results. BSI-SE provides analysis that provides a “metric of confidence” about how well the results satisfy their functional requirements. 

 

The State Estimator’s user-friendly interface is readily adaptable to your preferred EMS. The features of BSI-SE are:

  • Topology Assessment of Real Time Models 
  • Accurate Modeling of Interconnected Networks 
  • Fast Bad Data Detection and Detailed Analysis of Measurement Errors 
  • Computational Efficiency for Complex Large Scale Systems 
  • Parameter Errors and Correction

 

The BSI-SE processes telemetered power system measurements to obtain an estimate of the system voltages, flows, generation, and load.

 

Four key processes are involved: 

  • An observability processor identifying the observable buses in the system
  • An advanced, constraint-based solution module using a new block structured algorithm for faster, more robust solutions
  • Facilities for identifying and removing bad telemetry points from the measurement set
  • Tools for assessing the adequacy of an existing or a proposed telemetry configuration. Among other uses, these tools identify areas where additional telemetry is needed for redundancy

 

PRISM State Estimator (SE) processes telemetered power system measurements to obtain an estimate of the system voltages, flows, generation, and load.

 

Four key processes are involved:

  • An observability processor identifying the observable buses in the system
  • An advanced, constraint-based solution module using a new block structured algorithm for faster, more robust solutions
  • Facilities for identifying and removing bad telemetry points from the measurement set
  • Tools for assessing the adequacy of an existing or a proposed telemetry configuration. Among other uses, these tools identify areas where additional telemetry is needed for redundancy

More Information

For more information call 800.831.7223 or contact This email address is being protected from spambots. You need JavaScript enabled to view it.