Systems and methods for a real-time synchronized electrical power system simulator for “what-if” analysis and prediction over electrical power networks

• US 8,180,622 B2
• Filed: 10/24/2007
• Issued: 05/15/2012
• Est. Priority Date: 10/24/2006
• Status: Active Grant

• Current Assignee: Bentley Systems Incorporated
• Original Assignee: Power Analytics Corporation (PAC Global, Inc.)
• Inventors: Nasle, Adib
• Primary Examiner(s): Silver, David
• Application Number:
  US11/923,081
• Publication Number:
  US 20080109205A1
• Time in Patent Office: 1,665 Days
• Field of Search: 703/18
• US Class Current: 703/18
• CPC Class Codes: G06F 2119/06 Power analysis or power optimisation
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

A system for real-time modeling of electrical system performance is disclosed. The system includes a data acquisition component, a power analytics server and a client terminal. The power analytics server is comprised of a virtual system modeling engine, an analytics engine and a power system simulation engine. The virtual system modeling engine is configured to generate predicted data output utilizing a first virtual system model. The analytics engine is configured to synchronize the first virtual system model when a difference between the real-time data output and the predicted data output exceeds a threshold. The power system simulation engine is configured to store and process patterns and facilitate modification of parameters on the first virtual system model to create a second virtual system model; and forecast an aspect of the electrical system operating under parameters of the second virtual system model. The client terminal displays the forecasted aspects.

Claims

1. A system for real-time modeling of electrical system performance, comprising:

a data acquisition component communicatively connected to one or more sensors configured to acquire real-time data output from one or more components of an electrical system, wherein the one or more components comprise at least one of a transformer, electrical line, reactor, capacitor, synchronous machine, induction machine, compensator, motor operated valve, turbine, fault isolation unit, and bus transfer unit;

an analytics server communicatively connected to the data acquisition component, comprising,

a virtual system modeling engine configured to generate predicted data output for the electrical system utilizing a first virtual system model of the electrical system,

an analytics engine configured to

monitor the real-time data output and the predicted data output of the electrical system,

determine a difference between the real-time data output and the predicted data output, and,

if the difference exceeds a first threshold but does not exceed a second threshold, initiate a calibration and synchronization operation to update the first virtual system model in real-time during normal operation of the electrical system to provide predicted data output that is consistent with the real-time data output, and

a power system simulation engine configured to store and process patterns observed from the real-time data output and the predicted data output, the power system simulation engine further configured to operate in a scenario builder mode to facilitate modification of parameters on the first virtual system model to create a second virtual system model and to forecast an aspect of the electrical system operating under the modified parameters of the second virtual system model; and

a client terminal communicatively connected to the power system simulation engine, the client terminal configured to allow a system administrator to modify the parameters of the first virtual system model when the power system simulation engine is operating in the scenario builder mode and display a report of the forecasted aspects.

2. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the power analytics simulation engine includes,

an associative memory layer,

a sensory layer, and

a neocortical model.

3. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the modified parameters include a selection of electrical system components and component operational parameters.

4. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the modified parameters include a selection of contingency events that the virtual system model is subjected to during the simulation.

5. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the modified parameters include a selection of remedial systems for correcting problems with electrical system performance.

6. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the modified parameters include a selection of electrical system and load point reliability indices.

7. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the modified parameters include a selection of power load set points.

8. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the aspect is a predicted ability of the electrical system to maintain an acceptably high level of power quality.

9. The system for real-time modeling of electrical system performance, as recited in claim 4, wherein the aspect is a predicted ability of the electrical system to maintain an acceptably high level of power quality when subjected to a contingency event.

10. The system for real-time modeling of electrical system performance, as recited in claim 8, wherein the power quality level is high when the electrical system maintains a voltage and frequency output within defined tolerance limits.

11. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the aspect is the predicted total power system capacity for the electrical system.

12. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the aspect is a predicted ability of the electrical system to maintain sufficient active and reactive power reserves in the electrical system.

13. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the aspect is a predicted ability of the electrical system to maintain a minimum level of electrical system reliability and availability.

14. The system for real-time modeling of electrical system performance, as recited in claim 4, wherein the aspect is a predicted ability of the electrical system to maintain a minimum electrical system operational safety level during the simulated contingency event.

15. The system for real-time modeling of electrical system performance, as recited in claim 4, wherein the aspect is a predicted ability of the electrical system to maintain minimum electrical system operational costs during the simulated contingency event.

16. The system for real-time modeling of electrical system performance, as recited in claim 4, wherein the aspect is a predicted ability of the electrical system to maintain operational stability in the electrical system when subjected to the simulated contingency event.

17. The system for real-time modeling of electrical system performance, as recited in claim 16, wherein operational stability is a measure of the electrical system'"'"'s ability to maintain stability and recover from the contingency event without violating operational constraints of the electrical system.

26. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the analytics engine is further configured to, if the difference exceeds the second threshold, generate an alarm.

27. The system for real-time modeling of electrical system performance, as recited in claim 1, wherein the analytics engine is further configured to, if the difference exceeds the second threshold, perform root cause analysis to determine interdependencies and identify parent-child failure relationships between processes and equipment of the electrical system.

18. A computer implemented method for real-time modeling of electrical system performance, comprising:

acquiring real-time data output from one or more components of an electrical system, wherein the one or more components comprise at least one of a transformer, electrical line, reactor, capacitor, synchronous machine, induction machine, compensator, motor operated valve, turbine, fault isolation unit, and bus transfer unit;

generating predicted data output for the electrical system utilizing a first virtual system model of the electrical system;

determining a difference between the real-time data output and the predicted data output;

if the difference exceeds a first threshold but does not exceed a second threshold, initiating a calibration and synchronization operation to update the first virtual system model in real-time during normal operation of the electrical system to provide predicted data output that is consistent with the real-time data output;

modifying a parameter of the first virtual system model to create a second virtual system model, using a scenario builder application;

simulating electrical system performance using the second virtual system model; and

generating a report that forecasts an aspect of the electrical system.

19. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the modified parameter is a selection of one of an electrical system component or component operational parameter.

20. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the modified parameter is a selection of a contingency event that the second virtual system model is subjected to during the simulation.

21. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the modified parameters is a selection of a remedial system for correcting problems with electrical system performance.

22. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the modified parameter is a selection of one of an electrical system reliability index or load point reliability index.

23. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the modified parameter is a selection of a power load set point.

24. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the aspect is a predicted ability of the electrical system to maintain an acceptably high level of power quality.

25. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, wherein the aspect is a predicted ability of the electrical system to maintain an acceptably high level of power quality when subjected to a contingency event.

28. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, further comprising, if the difference exceeds the second threshold, generating an alarm.

29. The computer implemented method for real-time modeling of electrical system performance, as recited in claim 18, further comprising, if the difference exceeds the second threshold, performing root cause analysis to determine interdependencies and identify parent-child failure relationships between processes and equipment of the electrical system.