CN107171296B - A kind of oil field distribution network fault handling method through low resistance grounding - Google Patents
A kind of oil field distribution network fault handling method through low resistance grounding Download PDFInfo
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- CN107171296B CN107171296B CN201710223017.7A CN201710223017A CN107171296B CN 107171296 B CN107171296 B CN 107171296B CN 201710223017 A CN201710223017 A CN 201710223017A CN 107171296 B CN107171296 B CN 107171296B
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- pumping unit
- oil
- field distribution
- distribution network
- bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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Abstract
The present invention relates to a kind of oil field distribution network fault handling method through low resistance grounding, which comprises when detecting that the oil field distribution network breaks down, search the position of fault point；The route of the fault point is disconnected by opening the breaker, and judges whether the failure is non-permanent failure；It is the pumping unit component batch initiation in the route then closed the breaker of the opening, and described and bus is disconnected；Otherwise the generator of oil pumping unit adjacent with open breaker on the route disconnected with the bus is started, the route to disconnect with the bus provides active power.The present invention carries out corresponding troubleshooting after detecting line fault, according to the type of failure, so as to ensure the normal work of oil pumping unit.
Description
Technical field
The present invention relates to a kind of oil field distribution network fault handling method through low resistance grounding.
Background technique
Oil field distribution network in petroleum industry through low resistance grounding generallys use single supply, is by radioactivity network structure
Multiple oil pumping are connected in series on bus by pumping unit power transmission and distribution, since oil pumping machine circuit is generally longer, line loss is larger, because
The pressure drop of this line end is very big, and the voltage of the pumping unit in line end is lower；Simultaneously because more pumping unit series connection connect
It is connected on bus, wherein may result in the pumping unit of connection behind cannot be normal when the line fault of a pumping unit
Work, or even will cause and completely have a power failure, power supply reliability is low, and system operation is unstable.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind after detecting line fault, according to the type of failure
Corresponding troubleshooting is carried out, so as to ensure the normal work of oil pumping unit through the oil field distribution network failure of low resistance grounding
Processing method,
Oil field distribution network fault handling method of the present invention through low resistance grounding, comprising the following steps:
Oil field distribution network is set first, oil field distribution by connection power supply bus, be connected to multiple series connections of bus
Oil pumping unit constitute, two adjacent groups pump unit by breaker connection；Generator is respectively configured in each pumping unit group；Each
Oil pumping unit presets several pumping units；
Secondly, the generator of end oil pumping unit provides nothing for end oil pumping unit when oil field distribution network works normally
Function power, the generator of oil pumping unit except end oil pumping unit are in hot standby state；
Again, when detecting that the oil field distribution network breaks down, the position of fault point is searched；By opening breaker
The route of fault point is disconnected, and judges whether failure is non-permanent failure；
Finally, failure is that non-permanent fault then closes the breaker of the opening, and the route that will be disconnected with bus
In pumping unit component batch initiation；
Otherwise the generator of oil pumping unit adjacent with open breaker on the route disconnected with bus is started, for
The route that bus disconnects provides active power.
Pumping unit component batch initiation program in the route disconnected with bus is specifically included:
Calculate the reactive power that every group of oil pumping unit in the route that starting is disconnected with bus needs；
The motor for setting the pumping unit of quantity is had sole access into mother according to the reactive power that every group of oil pumping unit needs
In line；
Motor in the route disconnected with bus is independently accessed the starting of other pumping units except the pumping unit of bus；
After other pumping units work normally, the pumping unit overall startup that motor is independently accessed bus is linked into oil field
In power distribution network.
The generator is gas electricity generator.
The response time of the breaker is less than 10ms.
The power capacity of the generator of each oil pumping unit except the end oil pumping unit is greater than the oil field distribution
The sum of the power capacity of motor of all pumping units of net.
The power of the generator of the end oil pumping unit is less than each oil pumping unit except end oil pumping unit
Generator power.
When the generator provides reactive power, the voltage value of the generator output for providing reactive power continuously may be used
It adjusts.
The impermanency failure is the failure that cannot restore automatically within the preset time.
Oil field distribution network fault handling method through low resistance grounding of the invention is line using low capacity gas electricity generator
Road end provides reactive power support, and can continuously adjust, and line end voltage is increased to any setting value；Low capacity
Generator can also be held when failure in the line and provide active power and reactive power for line end, transport line end normally
Row；Route middle-end gas electricity generator can bear the function of backup power supply after system power supply exits power supply, make the non-event of route
Hinder end to operate normally, reduce fault outage range, reduces fault outage loss.In addition, the present invention is by judging failure,
When failure is non-permanent failure, in communication line, by the way of start in batches, by by the electronic of part pumping unit
Machine has sole access in route, provides reactive power using motor, does not need external equipment and provides reactive power, thus simple
Change failover process, improves fault restoration efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the oil field distribution network through low resistance grounding of the embodiment of the present invention；
Fig. 2 is the oil field distribution network fault handling method flow chart through low resistance grounding of the embodiment of the present invention；
Fig. 3 is the specific stream of the oil field distribution network fault handling method step S3 through low resistance grounding of the embodiment of the present invention
Cheng Tu.
Specific embodiment
As shown, a kind of oil field distribution network fault handling method through low resistance grounding, comprising the following steps:
Oil field distribution network is set first, oil field distribution by connection power supply bus, be connected to multiple series connections of bus
Oil pumping unit constitute, two adjacent groups pump unit by breaker connection；Generator is respectively configured in each pumping unit group；Each
Oil pumping unit presets several pumping units；
Secondly, the generator of end oil pumping unit provides nothing for end oil pumping unit when oil field distribution network works normally
Function power, the generator of oil pumping unit except end oil pumping unit are in hot standby state；
Again, when detecting that the oil field distribution network breaks down, the position of fault point is searched；By opening breaker
The route of fault point is disconnected, and judges whether failure is non-permanent failure；
Finally, failure is that non-permanent fault then closes the breaker of the opening, and the route that will be disconnected with bus
In pumping unit component batch initiation；
Otherwise the generator of oil pumping unit adjacent with open breaker on the route disconnected with bus is started, for
The route that bus disconnects provides active power.
Pumping unit component batch initiation program in the route disconnected with bus is specifically included:
Calculate the reactive power that every group of oil pumping unit in the route that starting is disconnected with bus needs；
The motor for setting the pumping unit of quantity is had sole access into mother according to the reactive power that every group of oil pumping unit needs
In line；
Motor in the route disconnected with bus is independently accessed the starting of other pumping units except the pumping unit of bus；
After other pumping units work normally, the pumping unit overall startup that motor is independently accessed bus is linked into oil field
In power distribution network.
The generator is gas electricity generator.
The response time of the breaker is less than 10ms.
The power capacity of the generator of each oil pumping unit except the end oil pumping unit is greater than the oil field distribution
The sum of the power capacity of motor of all pumping units of net.
The power of the generator of the end oil pumping unit is less than each oil pumping unit except end oil pumping unit
Generator power.
When the generator provides reactive power, the voltage value of the generator output for providing reactive power continuously may be used
It adjusts.
The impermanency failure is the failure that cannot restore automatically within the preset time.
Fig. 1 shows the structural schematic diagram of the oil field distribution network through low resistance grounding of the embodiment of the present invention.
Referring to Fig.1, the oil field distribution network through low resistance grounding of the embodiment of the present invention, specifically includes:
Bus 10 is connected to the oil pumping unit 20 of multiple series connections of bus, connects the disconnected of two adjacent groups oil pumping unit
Road device 30, and configuration is in the generator G of each oil pumping unit.
Include default pumping unit in above-mentioned power distribution network, in every group of oil pumping unit 20, and is taken out in every group of oil pumping unit
The quantity of oil machine may be the same or different.
In the present embodiment, breaker 30 belongs to fast breaker, and the response time is less than 10ms, and breaker 30 will
Route is divided into several segments, so as to be according to circumstances arranged accordingly at work.
The pumping unit of the present embodiment be beam pumping unit C, by asynchronous motor M as power device together with balance weight
It drives crank suspension point to move reciprocatingly, completes oil recovery process.
The generator of the present embodiment is gas electricity generator, gas electricity generator be one kind with liquefied gas, natural gas etc. for fuel
High efficiency generator, since fuel is in liberal supply, in the oil field distribution network through low resistance grounding have good use
Prospect.
Different power is arranged according to different positions for the setting of the generator of the present embodiment, due to end oil pumping unit
Generator is mainly used for providing reactive power, therefore end generator capacity power setting is less than other oil pumping units
Power capacity, excitation multiple is higher, provides higher voltage for end oil pumping unit, keeps line end pumping unit normal
Work, and the voltage value of generator output is continuously adjustable.
The power capacity of the generator of each oil pumping unit except end oil pumping unit is greater than the asynchronous of all pumping units
The sum of power capacity of motor, so that can be used as substitute electric power is normal take out when the connection with bus is broken down
Oil machine power supply.
When power distribution network works normally, each breaker is closed, and the generator of end oil pumping unit is end pumping unit
Group provides reactive power, and the generator of other oil pumping units is in hot standby state.
Based on the above-mentioned oil field distribution network through low resistance grounding, the present invention provides a kind of oil fields through low resistance grounding to match
The fault handling method of power grid.
The flow chart of Fig. 2 shows the of the invention oil field distribution network fault handling method through low resistance grounding.
Referring to Fig. 2, the oil field distribution network fault handling method of the invention through low resistance grounding is specifically included:
S1, when detecting that the oil field distribution network breaks down, search the position of the fault point；
S2, the route of the fault point is disconnected by opening the breaker, and judge the failure whether be it is non-forever
Long property failure；In the present embodiment, permanent fault is the failure that cannot restore automatically, and non-permanent failure is when preset
It is interior to restore normal failure automatically.
It S3, is the then breaker closing by the opening, and the pumping unit component in the route that described and bus is disconnected
Batch initiation；
S4, otherwise the generator of oil pumping unit adjacent with open breaker on the route disconnected with the bus opened
Dynamic, the route to disconnect with the bus provides active power.
Fig. 3 shows the specific stream of the step S3 of the oil field distribution network fault handling method of the invention through low resistance grounding
Cheng Tu.
In above process, step S3 is specifically included:
S1, the reactive power that every group of oil pumping unit in the route that starting is disconnected with the bus needs is calculated；
S2, the motor for setting the pumping unit of quantity is individually connect according to the reactive power that every group of oil pumping unit needs
Enter into bus；
S3, other being independently accessed motor except the pumping unit of bus in the route disconnected with the bus are taken out
Oil start；
S4, when other described pumping units work normally after, the pumping unit overall startup that motor is independently accessed bus is connect
Enter into the oil field distribution network.
In above process, since the oil pumping unit that will be switched off needs a large amount of reactive power during line attachment,
Therefore the reactive power needed by each oil pumping unit of calculating starting, can be as needed by the pumping unit of part oil pumping unit
It disconnects, motor can be used as generator in the short time again at this time, issue reactive power, and part is pumped unit starting, is then existed
By remaining oil pumping unit starting, opening for all pumping units can be realized so as to not need external equipment offer reactive power
It is dynamic.
Oil field distribution network fault handling method through low resistance grounding of the invention is line using low capacity gas electricity generator
Road end provides reactive power support, and can continuously adjust, and line end voltage is increased to any setting value；Low capacity
Generator can also be held when failure in the line and provide active power and reactive power for line end, transport line end normally
Row；Route middle-end gas electricity generator can bear the function of backup power supply after system power supply exits power supply, make the non-event of route
Hinder end to operate normally, reduce fault outage range, reduces fault outage loss.In addition, the present invention is by judging failure,
When failure is non-permanent failure, in communication line, by the way of start in batches, by by the electronic of part pumping unit
Machine has sole access in route, provides reactive power using motor, does not need external equipment and provides reactive power, thus simple
Change failover process, improves fault restoration efficiency.
The above specific embodiment is only to illustrate specific implementation technical solution of the invention rather than limits, although referring to reality
Example describes the invention in detail, it will be understood by those of skill in the art that can carry out to technical solution of the present invention
Modification or equivalent replacement should all cover in right of the invention without departing from the spirit and scope of the technical solution of the present invention
In claimed range.
Claims (8)
1. a kind of oil field distribution network fault handling method through low resistance grounding, comprising the following steps:
First be arranged oil field distribution network, oil field distribution by connection power supply bus, be connected to bus multiple series connections pumping
Oil machine group is constituted, and two adjacent groups oil pumping unit passes through breaker and connects；Generator is respectively configured in each pumping unit group；Each oil pumping
Unit presets several pumping units；
Secondly, the generator of end oil pumping unit provides idle function for end oil pumping unit when oil field distribution network works normally
Rate, the generator of oil pumping unit except end oil pumping unit are in hot standby state；
Again, when detecting that the oil field distribution network breaks down, the position of fault point is searched；By opening breaker for event
The route of barrier point disconnects, and judges whether failure is non-permanent failure；
Finally, failure is non-permanent fault then by the breaker closing of the opening, and will be in the route that disconnected with bus
Pumping unit component batch initiation；
Otherwise the generator of oil pumping unit adjacent with open breaker on the route disconnected with bus is started, is and bus
The route of disconnection provides active power.
2. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
Pumping unit component batch initiation program in the route disconnected with bus is specifically included:
Calculate the reactive power that every group of oil pumping unit in the route that starting is disconnected with bus needs；
The motor for setting the pumping unit of quantity is had sole access in bus according to the reactive power that every group of oil pumping unit needs；
Motor in the route disconnected with bus is independently accessed the starting of other pumping units except the pumping unit of bus；
After other pumping units work normally, the pumping unit overall startup that motor is independently accessed bus is linked into oil field distribution
In net.
3. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
The generator is gas electricity generator.
4. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
The response time of the breaker is less than 10ms.
5. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
The power capacity of the generator of each oil pumping unit except the end oil pumping unit is greater than all of the oil field distribution network
The sum of power capacity of motor of pumping unit.
6. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
The power of the generator of the end oil pumping unit is less than the generator of each oil pumping unit except end oil pumping unit
Power.
7. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
When the generator of end oil pumping unit provides reactive power, the power generation of the end oil pumping unit that reactive power is provided
The voltage value of machine output is continuously adjustable.
8. a kind of oil field distribution network fault handling method through low resistance grounding according to claim 1, it is characterised in that:
The impermanency failure is the failure that cannot restore automatically within the preset time.
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| CN201710223017.7A CN107171296B (en) | 2017-04-07 | 2017-04-07 | A kind of oil field distribution network fault handling method through low resistance grounding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223017.7A CN107171296B (en) | 2017-04-07 | 2017-04-07 | A kind of oil field distribution network fault handling method through low resistance grounding |
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| CN107171296B true CN107171296B (en) | 2019-11-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202522609U (en) * | 2012-02-10 | 2012-11-07 | 周彦 | Automatic monitoring system for work condition information of petroleum pumping unit |
| CN104852383A (en) * | 2015-06-02 | 2015-08-19 | 中国海洋石油总公司 | Emergency control method for offshore oilfield cluster power grid |
| CN105006810A (en) * | 2015-08-07 | 2015-10-28 | 中国石油化工股份有限公司 | Fault processing method of neutral-point non-effective grounding system and corresponding processing system |
| CN105207178A (en) * | 2015-09-11 | 2015-12-30 | 国家电网公司 | Distribution network fault location and islanding method based on DG access |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8792217B2 (en) * | 2010-09-15 | 2014-07-29 | Schweitzer Engineering Laboratories Inc | Systems and methods for protection of components in electrical power delivery systems |
-
2017
- 2017-04-07 CN CN201710223017.7A patent/CN107171296B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202522609U (en) * | 2012-02-10 | 2012-11-07 | 周彦 | Automatic monitoring system for work condition information of petroleum pumping unit |
| CN104852383A (en) * | 2015-06-02 | 2015-08-19 | 中国海洋石油总公司 | Emergency control method for offshore oilfield cluster power grid |
| CN105006810A (en) * | 2015-08-07 | 2015-10-28 | 中国石油化工股份有限公司 | Fault processing method of neutral-point non-effective grounding system and corresponding processing system |
| CN105207178A (en) * | 2015-09-11 | 2015-12-30 | 国家电网公司 | Distribution network fault location and islanding method based on DG access |
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