CN107171295B - A kind of oil field distribution network fault handling method - Google Patents
A kind of oil field distribution network fault handling method Download PDFInfo
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- CN107171295B CN107171295B CN201710222901.9A CN201710222901A CN107171295B CN 107171295 B CN107171295 B CN 107171295B CN 201710222901 A CN201710222901 A CN 201710222901A CN 107171295 B CN107171295 B CN 107171295B
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- pumping unit
- distribution network
- field distribution
- oil
- generator
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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
Abstract
The present invention relates to a kind of oil field distribution network fault handling methods, when detecting that the oil field distribution network breaks down, search the position of fault point；The route of the oil field distribution network is disconnected in the fault point, and judges whether the failure is non-permanent failure；It is the pumping unit component batch initiation that will be switched off in the route that a recovery is connected to, and described and bus is disconnected；Otherwise the generator of oil pumping unit nearest with the cut-off point 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 methods.
Background technique
Oil field distribution network generally uses single supply to power in the prior art, is that oil pumping unit is defeated by radioactivity network structure
Distribution, multiple oil pumping units are connected in series on main bus-bar, and electric line is longer, and line loss is big, the pressure of electric line end
Drop is very big, and the oil pumping unit voltage in line end is lower, is not able to satisfy normal work demand；And more pumping unit series connection connect
It is connected to main bus-bar, wherein will lead to the equal cisco unity malfunction of subsequent pumping unit, when serious even when a pumping unit breaks down
Whole line outage is caused, transmission & distribution electrical property is unreliable.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind can detect road failure in time, and according to failure
Type carries out corresponding troubleshooting, to ensure the oil field distribution network fault handling method of oil pumping unit normal work.
Oil field distribution network fault handling method of the invention, comprising the following steps:
Firstly, setting main bus-bar, the oil field distribution network that several oil pumping units are constituted is connected in series to main bus-bar, each oil pumping
Unit includes generator, pumping unit and motor, and the pumping unit of oil pumping group machine is connect by motor with main bus-bar, generator
It is connect with main bus-bar；
Secondly, when oil field distribution network works normally, the generator starting of the end oil pumping unit farthest apart from main bus-bar is
End oil pumping unit provides reactive power；The generator of oil pumping unit in addition to the pumping unit of end is in hot standby state；
Again, when detecting that the oil field distribution network breaks down, the position of fault point is searched；
The route of oil field distribution network is disconnected in the fault point, and judges whether the failure is non-permanent failure；
It is that will be switched off restoring connection, and by the pumping unit component batch initiation in the route disconnected with main bus-bar；
Otherwise the generator of oil pumping unit nearest with cut-off point on the route disconnected with main bus-bar is started, for and it is main
The route that bus disconnects provides active power.
Pumping unit component batch initiation program in the route disconnected with main bus-bar is specifically included:
Calculate reactive power required for every group of oil pumping unit in the route that starting is disconnected with main bus-bar；
According to every group of oil pumping unit need reactive power by set quantity oil pumping unit in pumping unit and motor
It disconnects；
The oil pumping unit starting that pumping unit in the route disconnected with main bus-bar is normally connect with motor；
After unit of pumping is worked normally with the oil pumping unit that motor is normally connect, the pumping unit that will be switched off is respectively connected to
Corresponding motor, and start and be linked into oil field distribution network.
The generator is gas electricity generator.
The power capacity of the generator of each oil pumping unit in addition to unit is pumped in end is greater than the institute of oil field distribution network
There is the sum of the power capacity of motor of oil pumping unit.
The power of the generator of the end oil pumping unit is less than each oil pumping unit in addition to unit is pumped in end
The power of generator.
When generator provides reactive power, the voltage value for providing the generator output of reactive power is continuously adjustable.
The impermanency failure is the failure that cannot restore automatically within the preset time.
The motor is asynchronous motor.
Oil field distribution network fault handling method of the invention, nothing is provided using low capacity gas electricity generator for line end
The support of function power, and can continuously adjust, line end voltage is increased to any setting value；Small-capacity generator can be with
It is held when failure in the line and provides active power and reactive power for line end, operate normally line end；Route middle-end
Gas electricity generator can bear the function of backup power supply after system power supply exits power supply, and route non-faulting is made to rectify Chang Yun
Row reduces fault outage range, reduces fault outage loss.In addition, the present invention is by judging failure, when failure is non-
When permanent fault, in communication line, by the way of start in batches, by the way that part pumping unit and motor are disconnected, benefit
Reactive power is provided with motor, external equipment is not needed and reactive power is provided, to simplify failover process, is improved
Fault restoration efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the oil field distribution network of the embodiment of the present invention；
Fig. 2 is the flow chart of the fault handling method of oil field distribution network of the invention；
Fig. 3 is the specific flow chart of the step S3 of oil field distribution network fault handling method of the invention.
Specific embodiment
As shown, a kind of oil field distribution network fault handling method, comprising the following steps:
Firstly, setting main bus-bar, the oil field distribution network that several oil pumping units are constituted is connected in series to main bus-bar, each oil pumping
Unit includes generator, pumping unit and motor, and the pumping unit of oil pumping group machine is connect by motor with main bus-bar, generator
It is connect with main bus-bar；
Secondly, when oil field distribution network works normally, the generator starting of the end oil pumping unit farthest apart from main bus-bar is
End oil pumping unit provides reactive power；The generator of oil pumping unit in addition to the pumping unit of end is in hot standby state；
Again, when detecting that the oil field distribution network breaks down, the position of fault point is searched；
The route of oil field distribution network is disconnected in the fault point, and judges whether the failure is non-permanent failure；
It is that will be switched off restoring connection, and by the pumping unit component batch initiation in the route disconnected with main bus-bar；
Otherwise the generator of oil pumping unit nearest with cut-off point on the route disconnected with main bus-bar is started, for and it is main
The route that bus disconnects provides active power.
Pumping unit component batch initiation program in the route disconnected with main bus-bar is specifically included:
Calculate reactive power required for every group of oil pumping unit in the route that starting is disconnected with main bus-bar；
According to every group of oil pumping unit need reactive power by set quantity oil pumping unit in pumping unit and motor
It disconnects；
The oil pumping unit starting that pumping unit in the route disconnected with main bus-bar is normally connect with motor；
After unit of pumping is worked normally with the oil pumping unit that motor is normally connect, the pumping unit that will be switched off is respectively connected to
Corresponding motor, and start and be linked into oil field distribution network.
The generator is gas electricity generator.
The power capacity of the generator of each oil pumping unit in addition to unit is pumped in end is greater than the institute of oil field distribution network
There is the sum of the power capacity of motor of oil pumping unit.
The power of the generator of the end oil pumping unit is less than each oil pumping unit in addition to unit is pumped in end
The power of generator.
When generator provides reactive power, the voltage value for providing the generator output of reactive power is continuously adjustable.
The impermanency failure is the failure that cannot restore automatically within the preset time.
The motor is asynchronous motor.
Referring to Fig.1, oil field distribution network of the invention specifically includes:
Main bus-bar 10 is connected to the oil pumping unit of multiple series connections of main bus-bar, and each oil pumping unit includes generator
20, pumping unit 30 and motor 40, generator 20 are directly connected to main bus-bar 10, and pumping unit 30 is connected to main mother by motor 40
Line 10.
When oil field distribution network works normally, the pumping unit farthest apart from main bus-bar, that is, end pumping unit generator is opened
It is dynamic, reactive power is provided for end pumping unit, other generators are in hot standby state.
The pumping unit 30 of the present embodiment is beam pumping unit, by asynchronous motor 40 as power device and balance weight one
It rises and crank suspension point is driven to move reciprocatingly, complete 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 it is normal for can be used as substitute electric power when the connection with main bus-bar is broken down
Pumping unit power supply.
Based on above-mentioned oil field distribution network, the present invention provides a kind of fault handling methods of oil field distribution network.
Fig. 2 shows the flow charts of the fault handling method of oil field distribution network of the invention.
Referring to Fig. 2, the fault handling method of the oil field distribution network of the embodiment of the present invention is specifically included:
S1, when detecting that the oil field distribution network breaks down, search the position of fault point；
S2, the route of the oil field distribution network is disconnected in the fault point, and judges whether the failure is impermanent
Property failure；In the present embodiment, permanent fault is the failure that cannot restore automatically, and non-permanent failure is in the preset time
It is interior to restore normal failure automatically.
It S3, is that will be switched off restoring connection, and by the pumping unit component batch initiation in the route disconnected with main bus-bar.
S4, otherwise the generator of oil pumping unit nearest with the cut-off point on the route disconnected with main bus-bar started,
To provide active power with the route that main bus-bar disconnects；
Fig. 3 shows the specific flow chart of the step S3 of oil field distribution network fault handling method of the invention.
In above process, step S3 is specifically included:
S31, starting and reactive power required for every group of oil pumping unit in the route of main bus-bar disconnection are calculated；
S32, according to starting reactive power that every group of oil pumping unit needs for the pumping in the oil pumping unit for setting quantity
Oil machine and motor disconnect；
S33, the oil pumping unit starting for normally connecting the pumping unit in the route disconnected with main bus-bar with motor；
S34, after the oil pumping unit that oil pumping unit and the motor are normally connect works normally, the pumping unit that will be switched off divides
It is not linked into corresponding motor, and starts and is linked 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 a short time at this time, issue reactive power, by part oil pumping unit starting, then
By remaining oil pumping unit starting, all pumping units can be realized so as to not need external equipment offer reactive power
Starting.
Oil field distribution network fault handling method of the invention is provided using low capacity gas electricity generator for line end idle
Power support, and can continuously adjust, line end voltage is increased to any setting value；Small-capacity generator can also be
Active power and reactive power are provided for line end when route middle-end failure, operates normally line end；The combustion of route middle-end
Gas generator can bear the function of backup power supply after system power supply exits power supply, operate normally route non-faulting end,
Reduce fault outage range, reduces fault outage loss.In addition, the present invention is by judging failure, when failure be it is non-forever
When long property failure, in communication line, by the way of start in batches, by disconnecting part pumping unit and motor, utilize
Motor provides reactive power, does not need external equipment and provides reactive power, to simplify failover process, improves failure
Remediation 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, comprising the following steps:
Firstly, setting main bus-bar, the oil field distribution network that several oil pumping units are constituted is connected in series to main bus-bar, each oil pumping unit
Including generator, pumping unit and motor, the pumping unit of unit of pumping is connect by motor with main bus-bar, generator also with master
Bus connection；
Secondly, the generator starting of the end oil pumping unit farthest apart from main bus-bar, is end when oil field distribution network works normally
Unit of pumping provides reactive power；The generator of oil pumping unit in addition to the pumping unit of end is in hot standby state；
Again, when detecting that the oil field distribution network breaks down, the position of fault point is searched；
The route of oil field distribution network is disconnected in the fault point, and judges whether the failure is non-permanent failure；
It is that will be switched off restoring connection, and by the pumping unit component batch initiation in the route disconnected with main bus-bar；
Otherwise the generator of oil pumping unit nearest with cut-off point on the route disconnected with main bus-bar is started, for and main bus-bar
The route of disconnection provides active power.
2. oil field distribution network fault handling method according to claim 1, it is characterised in that: the line that will be disconnected with main bus-bar
Pumping unit component batch initiation program in road specifically includes:
Calculate reactive power required for every group of oil pumping unit in the route that starting is disconnected with main bus-bar；
The reactive power needed according to every group of oil pumping unit disconnects the pumping unit in the oil pumping unit for setting quantity with motor；
The oil pumping unit starting that pumping unit in the route disconnected with main bus-bar is normally connect with motor；
After unit of pumping is worked normally with the oil pumping unit that motor is normally connect, it is right that the pumping unit that will be switched off is respectively connected to
The motor answered, and start and be linked into oil field distribution network.
3. oil field distribution network fault handling method according to claim 1, it is characterised in that: the generator is combustion gas hair
Motor.
4. oil field distribution network fault handling method according to claim 1, it is characterised in that: in addition to unit is pumped in end
Each oil pumping unit generator power capacity be greater than oil field distribution network all oil pumping units motor power hold
The sum of amount.
5. oil field distribution network fault handling method according to claim 1, it is characterised in that: the end oil pumping unit
The power of generator is less than the power of the generator of each oil pumping unit in addition to unit is pumped in end.
6. oil field distribution network fault handling method according to claim 1, it is characterised in that: when generator provides idle function
When rate, the voltage value for providing the generator output of reactive power is continuously adjustable.
7. oil field distribution network fault handling method according to claim 1, it is characterised in that: it is described impermanency failure be
The failure that cannot restore automatically within the preset time.
8. oil field distribution network fault handling method according to claim 1, it is characterised in that: the motor is asynchronous electricity
Motivation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222901.9A CN107171295B (en) | 2017-04-07 | 2017-04-07 | A kind of oil field distribution network fault handling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222901.9A CN107171295B (en) | 2017-04-07 | 2017-04-07 | A kind of oil field distribution network fault handling method |
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| Publication Number | Publication Date |
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| CN107171295A CN107171295A (en) | 2017-09-15 |
| CN107171295B true CN107171295B (en) | 2019-10-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917005A (en) * | 2010-08-19 | 2010-12-15 | 中国海洋石油总公司 | Power grid interlink system of offshore oil platform |
| CN202522609U (en) * | 2012-02-10 | 2012-11-07 | 周彦 | Automatic monitoring system for work condition information of petroleum pumping unit |
| JP2013223424A (en) * | 2012-04-17 | 2013-10-28 | Siemens Ag | Fault protection system for power system of dynamically positioned vessel |
| 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 |
| 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 |
-
2017
- 2017-04-07 CN CN201710222901.9A patent/CN107171295B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917005A (en) * | 2010-08-19 | 2010-12-15 | 中国海洋石油总公司 | Power grid interlink system of offshore oil platform |
| CN202522609U (en) * | 2012-02-10 | 2012-11-07 | 周彦 | Automatic monitoring system for work condition information of petroleum pumping unit |
| JP2013223424A (en) * | 2012-04-17 | 2013-10-28 | Siemens Ag | Fault protection system for power system of dynamically positioned vessel |
| 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 |
| 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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| Publication number | Publication date |
|---|---|
| CN107171295A (en) | 2017-09-15 |
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