IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0289318
(2008-10-24)
|
등록번호 |
US-8519565
(2013-08-27)
|
발명자
/ 주소 |
- Dozier, Chad Eric
- Schroeder, Edward Maurer
- Wagner, Matthew Lee
- Meinhart, Matthew Joseph
- Folken, Keith Ronald
- Chakravarty, Joydip
- Fisher, Douglas William
|
출원인 / 주소 |
|
대리인 / 주소 |
Finnegan, Henderson, Farabow, Garrett & Dunner LLP
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
7 |
초록
▼
A control system is provided for use with a plurality of generator sets. The control system may have at least one load discrete signal cable, a ramping discrete signal cable, a switching device, and a control module associated with a first of the plurality of generator sets. The control module may b
A control system is provided for use with a plurality of generator sets. The control system may have at least one load discrete signal cable, a ramping discrete signal cable, a switching device, and a control module associated with a first of the plurality of generator sets. The control module may be configured to detect a signal on the at least one load discrete signal cable generated by a second of the plurality of generator sets indicative of a load on the second of the plurality of generator sets, and to activate the switching device to implement an operational status change of the first of the plurality of generator sets based on the detection. The control module may also be configured to generate a signal on the ramping discrete signal cable to inhibit others of the plurality of generator sets from changing operational status during the operational status change of the first of the plurality of generator sets.
대표청구항
▼
1. A control system for use with a plurality of generator sets configured to provide power to an external load, each generator set of the plurality of generator sets being associated with a delay time and configured to have an operational status of an online mode or an offline mode, the online mode
1. A control system for use with a plurality of generator sets configured to provide power to an external load, each generator set of the plurality of generator sets being associated with a delay time and configured to have an operational status of an online mode or an offline mode, the online mode being a mode in which the generator set provides power to the external load, the offline mode being a mode in which the generator set does not provide power to the external load, and the delay time being a measure of time the generator set takes before it triggers its operational status change after detecting a signal, the control system comprising: a plurality of cables electrically coupling the plurality of generator sets, the plurality of cables including: at least one load discrete signal cable, the load discrete signal cable being configured to transmit a signal that indicates that a load on a generator set in the online mode is outside a desired operating range;a ramping discrete signal cable, the ramping discrete signal cable being configured to transmit an inhibition signal that indicates an ongoing operational status change of a generator set of the plurality of generator sets;a switching device configured to selectively connect each generator set of the plurality of generator sets to the external load; andat least one control module connected to the switching device and the plurality of cables, the at least one control module being configured to: detect a signal on the at least one load discrete signal cable and trigger an operational status change on a triggered generator set in response to the detection, the triggered generator set being one of (a) each generator set operating in the online mode, or (b) each generator set operating in the offline mode;activate the switching device to implement the operational status change on a first generator set of the triggered generator set, the first generator set being a generator set having the lowest delay time; andgenerate the inhibition signal on the ramping discrete signal cable to inhibit other generator sets of the plurality of generator sets from changing their operational status during the operational status change of the first generator set. 2. The control system of claim 1, wherein the at least one load discrete signal cable includes an overload discrete signal cable and an excess capacity discrete signal cable, the overload discrete signal cable being configured to transmit a signal that indicates that a load on a generator set in the online mode exceeds a desired operating range, and the excess capacity discrete signal cable being configured to transmit a signal that indicates that a load on a generator set in the online mode is below the desired operating range. 3. The control system of claim 2, wherein the control system is configured to detect a signal on the overload discrete signal cable and change the operational status of the first generator set from the offline mode to the online mode. 4. The control system of claim 1, wherein a signal on the ramping discrete signal cable overrides a signal on the at least one load discrete signal cable. 5. The control system of claim 4, wherein the signal on the ramping discrete signal cable is automatically generated in response to activation of the switching device. 6. The control system of claim 1, wherein the plurality of cables further includes a disable discrete signal cable, the disable discrete signal cable being configured to transmit a signal indicates an abnormal operation of a generator set of the plurality of generator sets. 7. The control system of claim 6, wherein the signal on the disable discrete signal cable is automatically generated based on an occurrence of an undesired electrical power output from a generator set of the plurality of generator sets. 8. The control system of claim 1, wherein: the at least one control module is a first control module configured to control operation of only the first generator set;each of the other generator sets of the plurality of generator sets is paired with a different dedicated control module; andthe delay time is different for each generator set of the plurality of generator sets. 9. The control system of claim 8, wherein each generator set of the plurality of generator sets have different output capacities, and the delay time is shorter for those generator sets of the plurality of generator sets having a lower output capacity. 10. The control system of claim 8, wherein each generator set of the plurality of generator sets in the offline mode is simultaneously triggered to change its operational status in response to detection of the signal. 11. The control system of claim 10, wherein the signal on the at least one load discrete signal cable is removed when load on the generator set that caused the signal returns to the desired operating range. 12. The control system of claim 1, wherein the control system is configured to detect a signal on the load discrete signal cable and change the operational status of the first generator set from the online mode to the offline mode to decrease the power provided to the external load. 13. The control system of claim 6, wherein a signal on the disable discrete signal cable overrides a signal on the at least one load discrete signal cable and the ramping discrete signal cable. 14. A method of operating a plurality of generator sets connected in parallel to an external load, each generator set of the plurality of generator sets being associated with a delay time which is reflective of an amount of time the generator set takes before it triggers its operational status change after detecting a signal, and configured to have an operational status of an online mode or an offline mode, the online mode being a mode in which the generator set provides power to the external load, the offline mode being a mode in which the generator set does not provide power to the external load, the method comprising: detecting a load outside a desired operating range on a generator set of the plurality of generator sets in the online mode;triggering an operational status change on a triggered generator set in response to the detection, the triggered generator set being one of (a) each generator set operating in the online mode, or (b) each generator set operating in the offline mode;changing the operational status of a first generator set of the triggered generator set, the first generator set being a generator set having the lowest delay time; andinhibiting other generator sets of the plurality of generator sets from changing their operational status during the operational status change of the first generator set by sending an inhibition signal to all of the other generator sets. 15. The method of claim 14, wherein detecting a load outside a desired operating range includes detecting a signal on one of a plurality of cables interconnecting the plurality of generator sets, the plurality of cables including an overload discrete signal cable and an excess capacity discrete signal cable, the overload discrete signal cable being configured to transmit a signal that indicates that a load on a generator set in the online mode exceeds a desired operating range, and the excess capacity discrete signal cable being configured to transmit a signal that indicates that a load on a generator set in the online mode is below the desired operating range. 16. The method of claim 14, wherein the delay time associated with each generator set of the plurality of generator sets is different. 17. The method of claim 14, wherein each generator set of the plurality of generator sets have different output capacities, and the delay time is shorter for those generator sets having a lower output capacity. 18. The method of claim 14, wherein triggering an operational status change includes simultaneously triggering an operational status change on each generator set of the triggered generator set. 19. A power system, comprising: a plurality of generators connected in parallel to an external load, each generator of the plurality of generators being associated with a delay time and configured to have an operational status of (a) an online mode or (b) an offline mode, the online mode being a mode in which the generator provides power to the external load, the offline mode being a mode in which the generator does not provide power to the external load, and the delay time being a measure of time the generator takes before it triggers its operational status change after detecting a signal; anda control system configured to control the operation of the plurality of generators, the control system being configured to: detect a load outside a desired operating range on a generator of the plurality of generators in the online mode;trigger an operational status change on a triggered set of generators in response to the detection, the triggered set being one of (a) each generator operating in the online mode, or (b) each generator operating in the offline mode;change the operational status of a first generator of the triggered set, the first generator being a generator having the lowest delay time; anddirect an inhibit signal to all other generators of the triggered set to prevent their operational status change during the operational status change of the first generator. 20. The power system of claim 19, wherein the delay time of each generator of the plurality of generators is a function of its output capacity. 21. The power system of claim 19, wherein the plurality of generators are connected together by a plurality of cables, the plurality of cables including: at least one load discrete signal cable, the load discrete signal cable being configured to transmit a signal that indicates that a load on a generator in the online mode is outside a desired operating range; anda ramping discrete signal cable, the ramping discrete signal cable being configured to transmit the inhibit signal. 22. The power system of claim 21, wherein the at least one load discrete signal cable includes: an overload discrete signal cable, the overload discrete signal cable being configured to transmit a signal that indicates that a load on a generator in the online mode exceeds the desired operating range; andan excess capacity discrete signal cable, the excess capacity discrete signal cable being configured to transmit a signal that indicates that a load on a generator in the online mode is below the desired operating range.
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