System and method for controlling the performance of a power generating system
A method and system for energy management in a power system. Target performance standards are calculated and used to measure performance and to comply with regulatory performance standards. The target performance standards are based on probability theory and are used to control power generation. The amount of corrective power necessary is based on the calculated target performance standards and the deviations of current performance values from the target standards.
1. A computer-implemented method of energy management in a power system comprising the steps of:
calculating, via a processor during each of a plurality of monitoring intervals dividing a time period, a violations ratio of allowable performance violations of a control performance standard related to load balancing, wherein the violations ratio comprises an allowable number of violations remaining over the time period;
equating by the processor the violations ratio with a corresponding probability associated with a performance probability distribution curve representing a probable occurrence of Area Control Error values when complying with the control performance standard;
determining by the processor a corresponding performance target associated with the corresponding probability; and
comparing the performance target with current values to determine a power correction for use as a performance guide for load balancing in the management of the power system.
2. The method of claim 1 , wherein the probability distribution curve is a standard normal distribution curve representing a probable occurrence of Area Control Error (ACE) values when complying with the control performance standard that requires an average ACE value for each of a number of time intervals be within specific limits.
3. The method of claim 1 , wherein the step of determining the performance target includes the step of using an iterative process.
4. The method of claim 1 , further comprising the step of normalizing the probability distribution curve.
5. The method of claim 1 further comprising the step of using the performance target and an instantaneous second performance value to determine a current deviation between the performance target and the second performance value.
6. The method of claim 5 , further comprising the steps of calculating deviations for previously calculated performance targets and second performance values for a plurality of monitoring intervals, and summing and storing the deviations in memory.
7. The method of claim 6 , further comprising the step of calculating a deviation ratio between the summed deviations and the total number of monitoring intervals.
8. The method of claim 7 , further comprising the step of summing the deviation ratio and the performance target to calculate an average performance target.
9. The method of claim 8 , further comprising the step of using the average performance target to determine the actions to be taken on the power system.
10. The method of claim 9 , further comprising the step of taking corrective action on the power system when the average performance target is greater than the performance target.
11. The method of claim 10 , further comprising the step of calculating the power correction amount by summing the deviations and the performance target.
12. A system for energy management in a power system comprising:
a processor for executing energy management software;
memory connected to the processor for storing performance data;
means for storing data connected to the processor; and
processor executable energy management software comprising a monitoring and control module capable of:
calculating, during each of a plurality of monitoring intervals dividing a time period, a violations ratio of allowable performance violations of a control performance standard related to load balancing, wherein the violations ratio comprises an allowable number of violations remaining over the time period;
equating the violations ratio with a corresponding probability associated with a performance probability distribution curve representing a probable occurrence of Area Control Error values when complying with the control performance standard;
determining a corresponding performance target associated with the corresponding probability; and
comparing the performance target with current values to determine a power correction for use as a performance guide for load balancing in the management of the power system.
13. The system for energy management of claim 12 , further comprising a monitoring and control network communicatively coupled to the processor for reporting performance data and for controlling the operation of the power system.
14. The system for energy management of claim 13 , further comprising a means for generating power on the power system in communication with the monitoring and control network.
15. The system of energy management of claim 14 , further comprising a field device for sensing the performance of the power system and reporting data to the processor.
16. The system of energy management of claim 15 , wherein the monitoring and control module further comprises executable code for using the performance target and an instantaneous second performance value to determine a current deviation between the performance target and the second performance value.
17. The system of energy management of claim 16 , wherein the monitoring and control module further comprises executable code for calculating deviations for previously calculated performance targets and second performance values for a plurality of monitoring intervals, and summing and storing the deviations in memory.
18. The system of energy management of claim 17 , wherein the monitoring and control module further comprises executable code for calculating a deviation ratio between the summed deviations and the total number of monitoring intervals.
19. The system of energy management of claim 18 , wherein the monitoring and control module further comprises executable code for summing the deviation ratio and the performance target to calculate an average performance target.
20. The system of energy management of claim 19 , wherein the monitoring and control module further comprises executable code for using the average performance target to determine the actions to be taken on the power system.
21. A tangible computer-readable medium having stored thereon instructions which when executed by a processor, cause the processor to perform the steps of:
calculating, during each of a plurality of monitoring intervals dividing a time period, a violations ratio of allowable performance violations of a control performance standard related to load balancing, wherein the violations ratio comprises an allowable number of violations remaining over the time period;
equating the violations ratio with a corresponding probability associated with a performance probability distribution curve representing a probable occurrence of Area Control Error values when complying with the control performance standard;
determining a corresponding performance target associated with the corresponding probability; and
comparing the performance target with current values to determine a power correction for use as a performance guide for load balancing in energy management of the power system.