Central plant control system with dynamic computation reduction

1. A controller for a plurality of heating, ventilation, or air conditioning (HVAC) devices, the controller comprising:

a processing circuit comprising one or more processors and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to:

detect a change in condition that affects an operating status of a first HVAC device of the plurality of HVAC devices, the first HVAC device operable to produce, consume, store, or direct flow of one or more fluid resources or energy resources;

use schematic relationships between the plurality of HVAC devices and the operating status of the first HVAC device to determine a reduced subset of the plurality of HVAC devices for which operating parameters are to be generated, the schematic relationships indicating fluid connections or energy connections between the plurality of HVAC devices through which the one or more fluid resources or energy resources are transferred between the plurality of HVAC devices;

generate the operating parameters for the reduced subset of the plurality of HVAC devices; and

operate the reduced subset of the plurality of HVAC devices using the operating parameters.

2. The controller of claim 1 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a second HVAC device of the plurality of HVAC devices that is schematically dependent on the first HVAC device based on the schematic relationships; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices.

3. The controller of claim 1 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a second HVAC device of the plurality of HVAC devices that is arranged in series with the first HVAC device based on the schematic relationships; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices in response to the change in condition causing the first HVAC device to become inactive.

4. The controller of claim 1 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a second HVAC device of the plurality of HVAC devices that is arranged in parallel with the first HVAC device based on the schematic relationships; and

setting an operating status of the second HVAC device to provide a flow path for at least one of the one or more fluid resources or energy resources through the second HVAC device in response to the change in condition causing a flow path for the at least one of the one or more fluid resources or energy resources through the first HVAC device to become closed.

5. The controller of claim 1 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

determining that the first HVAC device is a linking device that couples a first group of the plurality of HVAC devices with a second group of the plurality of HVAC devices based on the schematic relationships; and

excluding the second group of the plurality of HVAC devices from the reduced subset of the plurality of HVAC devices in response to the change in condition causing the first HVAC device to decouple the first group from the second group.

6. The controller of claim 1 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a stranded node coupled to the first HVAC device in response to the change in condition causing the operating status of the first HVAC device to become inactive;

using the schematic relationships to identify a second HVAC device of the plurality of HVAC devices coupled to the stranded node; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices.

7. A controller for a plurality of heating, ventilation, or air conditioning (HVAC) devices, the controller comprising:

a processing circuit comprising one or more processors and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to:

detect a change in condition that affects an operating status of a first HVAC device of the plurality of HVAC devices, the first HVAC device operable to produce, consume, store, or direct flow of one or more fluid resources or energy resources;

determine, using the operating status of the first HVAC device and schematic relationships indicating fluid connections or energy connections between the plurality of HVAC device through which the one or more fluid resources or energy resources are transferred between the plurality of HVAC devices, a reduced subset of the plurality of HVAC devices for which operating parameters are to be generated based on the change in condition;

generate the operating parameters for the reduced subset of the plurality of HVAC devices while skipping computations associated with a remainder of the plurality of HVAC devices; and

operate the reduced subset of the plurality of HVAC devices using the operating parameters.

8. The controller of claim 7 , wherein:

the change in condition is a change in a monitored variable that causes the operating status of the first HVAC device to become inactive; and

determining the reduced subset of the plurality of HVAC devices comprises excluding the first HVAC device from the reduced subset of the plurality of HVAC devices.

9. The controller of claim 7 , wherein determining the reduced subset of the plurality of HVAC devices for which operating parameters are to be generated comprises:

using a stored rule to evaluate the change in condition and set the operating status of the first HVAC device to an operating status defined by the stored rule;

excluding the first HVAC device from the reduced subset of the plurality of HVAC devices in response to setting the operating status of the first HVAC device to the operating status defined by the stored rule.

10. The controller of claim 7 , wherein:

the change in condition is an indication that a sensor is offline or that measurements from the sensor are unreliable; and

determining the reduced subset of the plurality of HVAC devices comprises disabling the first HVAC device and excluding the first HVAC device from the reduced subset of the plurality of HVAC devices in response to determining that operating the first HVAC device relies upon the measurements from the sensor.

11. The controller of claim 7 , wherein:

detecting the change in condition comprises determining a time at which the operating status of the first HVAC device most recently changed; and

determining the reduced subset of the plurality of HVAC devices comprises excluding the first HVAC device from the reduced subset of the plurality of HVAC devices in response to determining that a threshold amount of time has not yet elapsed since the time at which the operating status of the first HVAC device most recently changed.

12. The controller of claim 7 , wherein determining the reduced subset of the plurality of HVAC devices comprises:

using the schematic relationships between the plurality of HVAC devices to identify a second HVAC device that is schematically dependent on the first HVAC device; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices.

13. The controller of claim 7 , wherein determining the reduced subset of the plurality of HVAC devices comprises:

identifying a stranded node coupled to the first HVAC device in response to the change in condition causing the operating status of the first HVAC device to become inactive;

using the schematic relationships between the plurality of HVAC devices to identify a second HVAC device of the plurality of HVAC devices coupled to the stranded node; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices.

14. A method for operating a plurality of heating, ventilation, or air conditioning (HVAC) devices, the method comprising:

detecting a change in condition that affects an operating status of a first HVAC device of the plurality of HVAC devices, the first HVAC device operable to produce, consume, store, or direct flow of one or more fluid resources or energy resources;

using the operating status of the first HVAC device and schematic relationships between the plurality of HVAC devices to determine a reduced subset of the plurality of HVAC devices for which operating parameters are to be generated, the schematic relationships indicating fluid connections or energy connections between the plurality of HVAC devices through which the one or more fluid resources or energy resources are transferred between the plurality of HVAC devices;

generating operating parameters for the reduced subset of the plurality of HVAC devices; and

operating the reduced subset of the plurality of HVAC devices using the operating parameters.

15. The method of claim 14 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a second HVAC device of the plurality of HVAC devices that is schematically dependent on the first HVAC device based on the schematic relationships; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices.

16. The method of claim 14 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a second HVAC device of the plurality of HVAC devices that is arranged in series with the first HVAC device based on the schematic relationships; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices in response to the change in condition causing the first HVAC device to become inactive.

17. The method of claim 14 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a second HVAC device of the plurality of HVAC devices that is arranged in parallel with the first HVAC device based on the schematic relationships; and

setting an operating status of the second HVAC device to provide a flow path for at least one of the one or more fluid resources or energy resources through the second HVAC device in response to the change in condition causing a flow path for the at least one of the one or more fluid resources or energy resources through the first HVAC device to become closed.

18. The method of claim 14 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

determining that the first HVAC device is a linking device that couples a first group of the plurality of HVAC devices with a second group of the plurality of HVAC devices based on the schematic relationships; and

excluding the second group of the plurality of HVAC devices from the reduced subset of the plurality of HVAC devices in response to the change in condition causing the first HVAC device to decouple the first group from the second group.

19. The method of claim 14 , wherein using the schematic relationships between the plurality of HVAC devices to determine the reduced subset of the plurality of HVAC devices comprises:

identifying a stranded node coupled to the first HVAC device in response to the change in condition causing the operating status of the first HVAC device to become inactive;

using the schematic relationships to identify a second HVAC device of the plurality of HVAC devices coupled to the stranded node; and

excluding the second HVAC device from the reduced subset of the plurality of HVAC devices.

20. The method of claim 14 , wherein:

the change in condition is a change in a monitored variable that causes the operating status of the first HVAC device to become inactive; and

determining the reduced subset of the plurality of HVAC devices comprises excluding the first HVAC device from the reduced subset of the plurality of HVAC devices.