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1. WO2020159598 - SYSTÈME DE COMMANDE DE NIVEAU DE SUPERVISION POUR LA RÉGULATION DE LA DEMANDE D'UN SYSTÈME DE CVC

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CLAIMS:

What is claimed is:

1. A supervisory-level control system, comprising:

a summation unit receptive of first and second signals;

a heating, ventilation and air-conditioning (HVAC) system to generate the second signal according to first set-point signals and to a second set-point signal; and

a supervisory controller comprising:

a control unit receptive of an error signal, which represents a difference between the first and second signals, from the summation unit;

a set-point scheduler receptive of a demand signal generated by the control unit according to the error signal, the set-point scheduler being configured to generate a set-point command signal and the second set-point signal according to the demand signal; and

a zone level set-point distribution unit configured to generate the first set-point signals in accordance with the set-point command signal.

2. The supervisory-level control system according to claim 1, wherein the first signal comprises an input power signal and the second signal comprises a total power demand signal.

3. The supervisory-level control system according to claim 1, wherein the HVAC system comprises a building air distribution system and a chiller plant.

4. The supervisory-level control system according to claim 3, wherein the HVAC system further comprises zone climate controllers and a chiller controller.

5. The supervisory-level control system according to claim 4, wherein:

the first set-point signals comprise zone temperature set-point signals receivable by the zone climate controllers, and

the second set-point signal comprises a chilled water supply temperature (CHWST) set-point signal receivable by the chiller controller.

6. The supervisory-level control system according to claim 5, wherein the zone level set-point distribution unit is configured to prioritize the zone temperature set-point signals.

7. A supervisory-level control method, comprising:

receiving first and second signals;

generating the second signal by a heating, ventilation and air-conditioning (HVAC) system according to first set-point signals and to a second set-point signal received from a supervisory controller;

determining a difference between the first signal and the second signal; generating a demand signal according to the determined difference;

generating a set-point command signal and the second set-point signal according to the demand signal; and

generating the first set-point signals according to the set-point command signal.

8. The supervisory-level control method according to claim 7, wherein the first signal comprises an input power signal and the second signal comprises a total power demand signal.

9. A system, comprising:

load entities that respectively establish a demand for electricity from a grid and comprise a supervisory-level control system comprising:

a summation unit receptive of a first signal representative of electricity available from the grid and a second signal representative of the demand for electricity;

a heating, ventilation and air-conditioning (HVAC) system to generate the second signal according to first set-point signals and to a second set-point signal; and

a supervisory controller comprising:

a control unit receptive of an error signal, which represents a difference between the first and second signals, from the summation unit;

a set-point scheduler receptive of a demand signal generated by the control unit according to the error signal, the set-point scheduler being configured to generate a set-point command signal and the second set-point signal according to the demand signal; and

a zone level set-point distribution unit configured to generate the first set-point signals in accordance with the set-point command signal.

10. The system according to claim 9, further comprising at least one of a power plant and an external power source to provide electricity to the grid.

11. The system according to claim 10, wherein the at least one of the power plant and the external power source draw at least some electricity from renewable energy sources.

12. The system according to claim 10, wherein an amount of the electricity available from the grid to each load entity is predefined.

13. The system according to claim 9, wherein the first signal comprises an input power signal and the second signal comprises a total power demand signal.

14. The system according to claim 9, wherein the HVAC system comprises a building air distribution system and a chiller plant.

15. The system according to claim 14, wherein the HVAC system further comprises zone climate controllers and a chiller controller.

16. The system according to claim 15, wherein:

the first set-point signals comprise zone temperature set-point signals receivable by the zone climate controllers, and

the second set-point signal comprises a chilled water supply temperature (CHWST) set-point signal receivable by the chiller controller

17. The system according to claim 16, wherein the zone level set-point distribution unit is configured to prioritize the zone temperature set-point signals.