Systems, methods and apparatus for improved regulation of energy delivery systems

Patent metadata

Field	Value
Publication number	US-9893523-B2
Application number	US-201514666432-A
Country	US
Kind code	B2
Filing date	Mar 24, 2015
Priority date	Nov 21, 2014
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

Embodiments provide systems, methods and apparatus for controlling an energy delivery system including providing an energy management system (EMS) having an automatic generation control (AGC) system including a load frequency control (LFC) module and an economic dispatch (ED) module; determining a regulation requirement based upon a predefined set of nested system control zones and a current area control error (ACE); determining regulation allocation based on a pre-defined set of gain factors associated with the nested system control zones; and implementing corrections to the operation of the energy delivery system based upon solution results of the determined regulation allocation. Numerous other aspects are provided.

First claim

What is claimed is:

1. A method of controlling an energy delivery system including a process controller, an information network, and a generating resource, the method comprising:
providing an energy management system (EMS) having an automatic generation control (AGC) system including a load frequency control (LFC) module and an economic dispatch (ED) module;
receiving input data from the information network, the input data including real-time measurements;
determining a regulation requirement based upon a predefined set of nested system control zones and a current area control error (ACE);
determining a regulation allocation based on a pre-defined set of gain factors associated with the predefined set of nested system control zones; and
transmitting control information via the information network; and
modifying an operation of the energy delivery system based at least in part upon the control information;
wherein the control information is based upon solution results of the determined regulation allocation.

2. The method of claim 1 , wherein the predefined set of nested system control zones include a no-regulation zone, a regulation zone, a permissive zone, and an emergency zone.

3. The method of claim 2 , wherein when the ACE is within the no-regulation zone, a system generation is entirely dispatched, no regulation is required, and no regulation is allocated.

4. The method of claim 2 , wherein when the ACE is within the regulation zone, active power regulation is applied to progressively move one or more units of a plurality of units to bring the system to a desired system condition.

5. The method of claim 2 , wherein when the ACE is within the permissive zone, active power regulation is applied to progressively move one or more units of a plurality of units to bring the system to a desired system condition but any movements that deteriorate the ACE are blocked.

6. The method of claim 2 , wherein a gain factor associated with the emergency zone is tuned to bring the energy delivery system back to the no-regulation zone in a minimum amount of time.

7. The method of claim 2 , wherein a gain factor associated with the permissive zone is tuned to bring the energy delivery system back to the regulation zone.

8. The method of claim 2 , wherein a gain factor associated with the regulation zone is tuned to bring the energy delivery system back to the no-regulation zone.

9. An energy management system (EMS) comprising:
a process controller;
an information network coupled to the process controller;
a memory coupled to the process controller, the memory having stored therein a plurality of instructions readable and executable by the process controller, and when executed by the process controller, one or more of the plurality of instructions causes the energy management system to:
receive, from an information network, input data including real-time measurements;
determine a regulation requirement based upon a predefined set of nested system control zones and a current area control error (ACE);
determine a regulation allocation based on a pre-defined set of gain factors associated with the predefined set of nested system control zones; and
transmit control information via the information network;
modify the operation of an energy delivery system based at least in part upon the control information;
wherein the control information is based upon solution results of the determined regulation allocation.

10. The EMS of claim 9 , wherein when executed by the process controller one or more instructions of the plurality of instructions further cause the process controller to define the nested system control zones to include a no-regulation zone, a regulation zone, a permissive zone, and an emergency zone.

11. The EMS of claim 10 , wherein when executed by the process controller, one or more instructions of the plurality of instructions further cause a system generation to be entirely dispatched, no regulation to be required, and no regulation to be allocated when the ACE is within the no-regulation zone.

12. The EMS of claim 10 , wherein when executed by the process controller, one or more instructions of the plurality of instructions further cause an active power regulation to be applied to progressively move one or more units of a plurality of units to bring the energy delivery system to a desired system condition when the ACE is within the regulation zone.

13. The EMS of claim 10 , wherein when executed by the process controller, one or more instructions of the plurality of instructions further cause an active power regulation to be applied to progressively move one or more units of a plurality of units to bring the energy delivery system to a desired system condition but any movements that deteriorate the ACE are blocked when the ACE is within the permissive zone.

14. The EMS of claim 10 , wherein a gain factor of the predefined set of gain factors associated with the emergency zone is tuned to bring the energy delivery system back to the no-regulation zone.

15. The EMS of claim 10 , wherein a gain factor of the predefined set of gain factors associated with the permissive zone is tuned to bring the energy delivery system back to the regulation zone.

16. The EMS of claim 10 , wherein a gain factor of the predefined set of gain factors associated with the regulation zone is tuned to bring the energy delivery system back to the no-regulation zone.

Assignees

• Siemens Industry Inc

Inventors

• Chen Dingguo
• York Michael E

Classifications

• G05B15/02

  electric · CPC title

• H02J3/48

  Controlling the sharing of active power · CPC title

• H02J3/14 Primary

  by switching loads on to, or off from, the networks, e.g. progressively balanced loading · CPC title

• H02J3/46 Primary

  Controlling the sharing of generated power between the generators, sources or networks · CPC title

• Y02B70/3225

  Demand response systems, e.g. load shedding, peak shaving · CPC title