CN202142873U - Load distribution system for offshore power grids and power stations - Google Patents
Load distribution system for offshore power grids and power stations Download PDFInfo
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- CN202142873U CN202142873U CN201120180667U CN201120180667U CN202142873U CN 202142873 U CN202142873 U CN 202142873U CN 201120180667 U CN201120180667 U CN 201120180667U CN 201120180667 U CN201120180667 U CN 201120180667U CN 202142873 U CN202142873 U CN 202142873U
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Abstract
The utility model discloses a load distribution system for offshore power grids and power stations. The system comprises: a first judging module for judging whether the power station frequency is in a preset range when generators in the power grids and the power stations are in a differential adjustment mode; a first adjusting module for adjusting the output of a maximal output generator or a minimal output generator when the power station frequency is not in the preset range; a second judging module for judging whether a power ratio of the maximal output generator to the minimal output generator is less than a preset value when the power station frequency is in the preset range; a second adjusting module for adjusting the output of the maximal output generator or the minimal output generator when the power station frequency is not in the preset range. The load distribution system disclosed by the utility model carries out automatic balance distribution to the output of the generators in the offshore power grids and power stations through PMS, ensures impact resistance of all nodes in the power grids, improves the capability of the power grids for handling various types of emergency situations, enhances stability of the power grids and reduces power generation cost.
Description
Technical field
The present invention relates to marine electric power network technique, specially refer to the system of a kind of marine electrical network power station sharing of load.
Background technology
At present, along with the continuous increase of offshore oil platform, power load is increasing, and the pattern of original single power station power supply can not satisfy the demand to the electricity consumption reliability, and marine electrical network has become a main trend.And the sharing of load system of marine electrical network is a requisite part in the marine electrical network.
The land electrical network is regarded as infinitely great power, and its sharing of load system need not consider to deal with the impact resistance under the transient state impact; And marine electrical network is local minor scale power net; Its stand-by heat surplus is limited; If generating set is arranged because transient state is impacted to be caused shutdown or from net, probably can cause the collapse of local even whole electrical network, uses so the sharing of load system of land electrical network can not indiscriminately imitate in the marine electrical network fully.And marine electrical network is to the requirement of fail safe, reliability, all be the land electrical network can not compare, therefore design a kind of safe and reliable marine network load distribution system, become problem demanding prompt solution.
Summary of the invention
Main purpose of the present invention is the system that a kind of marine electrical network power station sharing of load is provided, and has promoted the completeness and the reliability of marine electrical network.
The present invention proposes the system of a kind of marine electrical network power station sharing of load, comprising:
First judge module is used for when electrical network power station generator is in poor adjusting pattern being arranged, and judges whether the power station frequency is in the predeterminable area;
First adjustment module is used for and ought be in the predeterminable area, and adjusting EIAJ or minimum go out exerting oneself of power generator;
Second judge module is used for when being in the predeterminable area, judges that more whether EIAJ and the minimum power ratio that goes out power generator are less than preset value;
Second adjustment module is used for when less than preset value, then regulates EIAJ or minimum and goes out exerting oneself of power generator.
Preferably, said first adjustment module specifically is used for:
When being higher than the predeterminable area maximum, reduce exerting oneself of EIAJ generator;
When being lower than the predeterminable area minimum value, increasing minimum and go out exerting oneself of power generator.
Preferably, said second adjustment module specifically is used for:
When less than preset value, increase minimum and go out exerting oneself of power generator, reduce exerting oneself of EIAJ generator simultaneously.
Preferably, the system of said marine electrical network power station sharing of load also comprises:
The 3rd judge module is used for when greater than preset value, judges whether electrical network power station gross capability is distribution load again;
The 3rd adjustment module is used for when not for distribution load, and adjusting EIAJ or minimum go out exerting oneself of power generator.
Preferably, said the 3rd adjustment module specifically is used for:
When being higher than distribution load, reduce exerting oneself of EIAJ generator;
When being lower than distribution load, increasing minimum and go out exerting oneself of power generator.
The system of marine electrical network of the present invention power station sharing of load; Through PMS exerting oneself of generator in the marine electrical network power station being carried out autobalance distributes; Guarantee the impact resistance of each node in the electrical network; Promoted electrical network and tackled the ability of various emergency case, strengthened the stability of electrical network and reduce cost of electricity-generating.
Description of drawings
Fig. 1 is a structural representation among one embodiment of system of the marine electrical network of the present invention power station sharing of load;
Fig. 2 is another structural representation among one embodiment of system of the marine electrical network of the present invention power station sharing of load.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to Fig. 1, the present invention proposes an embodiment of the system of a kind of marine electrical network power station sharing of load.This system comprises:
Offshore oilfield PMS (Power Management System, electric power management system) confirms that online generator is in indifference adjusting (ISOCH) pattern in the electrical network power station, then distributes generator output through meritorious transducer (RealPower Sensor) autobalance; If, then distribute generator output by the PMS autobalance for there being difference to regulate (DROOP) pattern.This autobalance is distributed and is comprised geometric ratio rate adjusting pattern and scheduling adjustment pattern etc.This PMS carries out balance adjustment through above-mentioned marine electrical network electric power station system; Main detailed description waits ratio to regulate pattern in the present embodiment.
Be meant that Deng the ratio adjusting the actual percentage that accounts for its rated output of exerting oneself of each generating set is consistent, and also can cost of electricity-generating control be added correction.This scheduling adjustment can be the steady state output of specifying arbitrary generating set in the electrical network according to the dispatching of power netwoks instruction.
The calculating of these rate regulation can distribute electrical network power station load, trend and factor as a reference such as online unit information.This dispatching of power netwoks instruction produces according to the actual conditions of electrical network, can consider reason of generating set own or trend distribution aspect consideration etc.
Above-mentioned predeterminable area can be set according to the actual conditions in electrical network power station, such as being set between the 49.9Hz to 50.1Hz (49.9Hz＜power station frequency＜50.1Hz) usually.Can judge through 21 pairs of these power station frequencies of above-mentioned first judge module; If the power station frequency is not in this predeterminable area (being that the power station frequency is smaller or equal to 49.9Hz or more than or equal to 50.1Hz); Then can regulate EIAJ in the electrical network power stations or minimum and go out exerting oneself of power generator, the exerting oneself of balancing generator through above-mentioned first adjustment module 22.
Because marine grid power is limited, runs into the phenomenon of frequency drift in the running possibly, can when frequency transfinites, mains frequency be adjusted in the allowed band through keeping watch on mains frequency.
If the power station frequency is in this predeterminable area; Judge that through second judge module 23 these minimums go out exerting oneself than (power ratio) of power generator and EIAJ generator again; When exerting oneself than less than preset value (such as Pmin/Pmax＜0.9); Then offshore oilfield PMS thinks ratio patterns such as generator output is not in, and can regulate EIAJ in the electrical network power stations or minimum through second adjustment module 24 and go out exerting oneself of power generator, the exerting oneself of balancing generator.The related data of this Pmin and Pmax can be obtained in advance.
Because there is networking in the power station and does not network two states, distribute control at networking state lower frequency by network load, the frequency under the not networking state need be by the power station Control System of Load Distribution.
The system of above-mentioned marine electrical network power station sharing of load; Through PMS exerting oneself of generator in the marine electrical network power station being carried out autobalance distributes; Guarantee the impact resistance of each node in the electrical network, promoted the ability that electrical network is tackled various emergency case, strengthen the stability of electrical network and reduce cost of electricity-generating.
Above-mentioned first adjustment module 22 specifically is used for: when being higher than the predeterminable area maximum, reduce exerting oneself of EIAJ generator; When being lower than the predeterminable area minimum value, increasing minimum and go out exerting oneself of power generator.
When this predeterminable area is 49.9Hz to 50.1Hz, when frequency is greater than 50.1Hz in the power station, reduce exerting oneself of EIAJ generator in the electrical network power station; When frequency is less than 49.9Hz in the power station, increases minimum and go out exerting oneself of power generator.
Above-mentioned second adjustment module 24 specifically is used for: when less than preset value, increase minimum and go out exerting oneself of power generator, reduce exerting oneself of EIAJ generator simultaneously.
When this preset value is 0.9; Go out exerting oneself than less than 0.9 o'clock of power generator and EIAJ generator in minimum; This offshore oilfield PMS thinks ratio patterns such as generator output is not in; Need wait ratio to regulate, can increase the minimum generator output (Pmin) of exerting oneself, reduce EIAJ generator output (Pmax) simultaneously.
With reference to Fig. 2, the system of above-mentioned marine electrical network power station sharing of load also comprises: the 3rd judge module 25 and the 3rd adjustment module 26; The 3rd judge module 25 is used for when greater than preset value, judges whether electrical network power station gross capability is distribution load again; The 3rd adjustment module 26 is used for when not for distribution load, and adjusting EIAJ or minimum go out exerting oneself of power generator.
Above-mentioned PMS can be the electrical network power station distribution load is set.When above-mentioned minimum goes out the preset value of exerting oneself than equaling (such as Pmin/Pmax＞=0.9) of power generator and EIAJ generator, then PMS thinks that each online generator output has been in balance, can keep this power station frequency constant, does not carry out the frequency adjustment; Exert oneself than the time when this, utilize the 3rd judge module 25 to judge whether electrical network power station gross capability is distribution load again greater than preset value.If be in distribution load, then do not adjust; If be not distribution load, then utilize the 3rd adjustment module 26 adjusting EIAJs or minimum to go out exerting oneself of power generator.
Above-mentioned the 3rd adjustment module 26 specifically is used for: when being higher than distribution load, reduce exerting oneself of EIAJ generator; When being lower than distribution load, increasing minimum and go out exerting oneself of power generator.
If above-mentioned electrical network power station gross capability is not a distribution load, when this electrical network power station gross capability was higher than distribution load, the EIAJ generator exerted oneself in the minimizing electrical network power station; When this electrical network power station gross capability is lower than distribution load, increases minimum and go out exerting oneself of power generator.
Marine electrical network also can use the scheduling adjustment pattern in the power station, carries out the autobalance of generator output and distributes.At first, set the preset gross capability and adjusting dead band in electrical network power station; If the actual gross capability in electrical network power station＜preset gross capability-dead band then increases minimum and goes out exerting oneself of power generator; If the actual gross capability in electrical network power station＞preset gross capability+dead band then reduces exerting oneself of EIAJ generator; If the actual gross capability in preset gross capability-dead band＜electrical network power station＜preset gross capability+dead band then remains unchanged.
Even the actual gross capability in preset gross capability-dead band＜electrical network power station＜preset gross capability+dead band; But minimum go out the exerting oneself than less than preset value (such as Pmin/Pmax＜0.9) of power generator and EIAJ generator; PMS thinks that generator output is not in balance; To increase the minimum generator output of exerting oneself, reduce the EIAJ generator output simultaneously.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (2)
1. the system of a marine electrical network power station sharing of load is characterized in that, comprising:
First judge module is used for when electrical network power station generator is in poor adjusting pattern being arranged, and judges whether the power station frequency is in the predeterminable area;
First adjustment module is used for and ought be in the predeterminable area, and adjusting EIAJ or minimum go out exerting oneself of power generator;
Second judge module is used for when being in the predeterminable area, judges that more whether EIAJ and the minimum power ratio that goes out power generator are less than preset value;
Second adjustment module is used for when less than preset value, then regulates EIAJ or minimum and goes out exerting oneself of power generator.
2. the system of marine electrical network according to claim 1 power station sharing of load is characterized in that, also comprises:
The 3rd judge module is used for when greater than preset value, judges whether electrical network power station gross capability is distribution load again;
The 3rd adjustment module is used for when not for distribution load, and adjusting EIAJ or minimum go out exerting oneself of power generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120180667U CN202142873U (en) | 2011-05-31 | 2011-05-31 | Load distribution system for offshore power grids and power stations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120180667U CN202142873U (en) | 2011-05-31 | 2011-05-31 | Load distribution system for offshore power grids and power stations |
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| Publication Number | Publication Date |
|---|---|
| CN202142873U true CN202142873U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120180667U Expired - Lifetime CN202142873U (en) | 2011-05-31 | 2011-05-31 | Load distribution system for offshore power grids and power stations |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201678A (en) * | 2011-05-31 | 2011-09-28 | 深圳市行健自动化系统有限公司 | Method and system for distributing load of maritime power-grid power station |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
-
2011
- 2011-05-31 CN CN201120180667U patent/CN202142873U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201678A (en) * | 2011-05-31 | 2011-09-28 | 深圳市行健自动化系统有限公司 | Method and system for distributing load of maritime power-grid power station |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN WELLREACH AUTOMATION CO., LTD. Free format text: FORMER NAME: SHENZHEN WELLREACH AUTOMATION SYSTEM CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Futian District bamboo forest Kim ninth storey building Patentee after: Shenzhen Wellreach Automation Engineering Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District bamboo forest Kim ninth storey building Patentee before: Shenzhen Xingjian Automation System Co., Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 10 building 602, Shenzhen Software Park, two road, Nanshan District science and technology, Guangdong, Shenzhen 518000, China Patentee after: Shenzhen Wellreach Automation Engineering Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District bamboo forest Kim ninth storey building Patentee before: Shenzhen Wellreach Automation Engineering Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |