CN201398079Y - Dynamic compensation device of oil well rig power supply system - Google Patents
Dynamic compensation device of oil well rig power supply system Download PDFInfo
- Publication number
- CN201398079Y CN201398079Y CN2009200331051U CN200920033105U CN201398079Y CN 201398079 Y CN201398079 Y CN 201398079Y CN 2009200331051 U CN2009200331051 U CN 2009200331051U CN 200920033105 U CN200920033105 U CN 200920033105U CN 201398079 Y CN201398079 Y CN 201398079Y
- Authority
- CN
- China
- Prior art keywords
- power
- reactive power
- thyristor
- rig
- controlled reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model provides a dynamic compensation device of an oil well rig power supply system, which comprises a thyristor phase controlled reactor and a wave filter which are connected in parallel.The thyristor phase controlled reactor comprises a controller and three thyristors which are sequentially connected. Both ends of each thyristor are connected with a reactor in series. The controlleradopts a DSP controller, and is used to monitor the reactive power change of a power network in real-time and adjust the thyristor phase controlled reactor in real-time. The wave filter is used to supply constant capacitive reactive power for the power network of the drill rig, and carries out harmonic suppression and reactive power compensation to the power network of the drill rig. The thyristor phase controlled reactor is used to generate variable inductive load. The dynamic compensation device can rapidly, dynamically and controllably compensate reactive power for the power network of thedrill rig, does not cause reactive power over-compensation phenomenon, can secede automatically when external fault or power-off happens, can recover to run after the power is switched on, is suitable for the circumstances of the oil well rig power supply system such as much inductive load which can change abruptly at any moment, can suppress the harmonic wave, and can improve the operational reliability and safety of the drill rig.
Description
Technical field
The utility model belongs to oil-well rig electric power system technical field, relates to a kind of oil-well rig electric power system dynamic compensating device.
Background technology
The electric power system of oil-well rig adopts many diesel generating sets to generate electricity by way of merging two or more grid systems, and load is the AC-DC motor that frequency converter and silicon controlled rectifying system drive, and AC-DC motor drives winch, slush pump, rotating disk and top and the drilling equipment operation such as drives.And power consumption equipments such as direct current machine, alternating-current variable frequency motor, AC induction motor and transformer belong to inductive load substantially, except taking from electric power system the active power P, also take a considerable amount of reactive power Qs, the apparent power S=(P in the system when operation
2+ Q
2)
1/2Power factor COS ￠=P/S, ￠ is a power-factor angle, is the phase difference of voltage and electric current in the load, the impedance angle of load just, so power factor is by the character decision of load itself, it doesn't matter with the size of additional power source and phase place.Equivalent resistance is big more in the load, and ￠ is more little for power-factor angle, and COS ￠ value is big more.When the active power of load absorption is certain value, its power factor is low more, total current I is just big more, reactive power Q increases thereupon, make that electric energy loss and voltage loss in the supply line are also just big more, the capacity utilance of equipment such as generator and transformer is also just low more, has caused the loss of the energy and increasing of cost.Owing to the reduction of power factor, directly influenced the power supply quality of electrical network, brought harmful effect to electric power system.Therefore one of measure that reduces supply line's power loss is exactly to reduce idle transmission on the line as far as possible, improve the load natural power factor and realize reactive power compensation, this measure can suppress harmonic wave simultaneously, from safety and economic angle analysis, the reactive power compensation of oil-well rig electric power system is very important.
The reactive power compensation of oil-well rig electric power system, the tradition fixed capacity compensation arrangements that adopt are realized more.But for the more frequent oil-well rig electric power system of load variations, this fixed capacity compensation arrangement, reactive power compensation deficiency when causing bus load heavy; When bus load was light, reactive power was sent electrical network again back to, and busbar voltage is raise.At any time change at the load in the oil-well rig electric power system, needed reactive power also is the characteristics that change at any time, in order to keep reactive balance, requires reactive power compensator to possess dynamic compensation function and is very important.
Summary of the invention
The purpose of this utility model provides a kind of oil-well rig electric power system dynamic compensating device, solved existing fixed capacity compensation arrangement reactive power compensation deficiency when the electric power system bus load is heavy, when bus load is light, reactive power is sent electrical network back to, the problem that causes busbar voltage to raise, realize the dynamic compensation of electric power system reactive power, can keep the reactive balance of electrical network, can suppress the harmonic wave of electrical network simultaneously.
The technical scheme that the utility model adopted is, oil-well rig electric power system dynamic compensating device, comprise Thyristor Controlled Reactor and filter in parallel, Thyristor Controlled Reactor comprises controller, Thyristor Controlled Reactor also comprises three thyristors that head and the tail are connected successively, the two ends of each thyristor are in series with a reactor respectively, and controller is connected with three thyristors respectively, and controller adopts DSP.
The utility model dynamic compensating device adopts the structure of Thyristor Controlled Reactor TCR and fixed capacitor FC parallel connection, power factor to oil-well rig grid dynamic reactive load is proofreaied and correct, and carry out reactive power dynamic compensation, can effectively improve the quality of electric power system, reduced overvoltage, solve problems such as voltage fluctuation, flickering inhibition and harmonic wave control, improved the stability of electric power system, improved the imbalance of voltage and current.Improve rig reliability of operation and fail safe, energy-saving and cost-reducing, have considerable economic.
Description of drawings
Fig. 1 is the structural representation of the utility model dynamic compensating device.
Among the figure, 1. Thyristor Controlled Reactor, 2. filter, 3. load.
Wherein, 1-1. controller, 1-2. thyristor, 1-3. reactor.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The structure of the utility model dynamic compensating device, as shown in Figure 1.Comprise Thyristor Controlled Reactor 1 and filter 2, Thyristor Controlled Reactor 1 is in parallel with filter 2.Thyristor Controlled Reactor 1 comprises controller 1-1, and Thyristor Controlled Reactor 1 also comprises three thyristor 1-2 that head and the tail are connected successively, and the two ends of each thyristor 1-2 are in series with a reactor 1-3 respectively.Controller 1-1 is connected with three thyristor 1-2 respectively.
Controller 1-1 adopts full-digital intelligent control system DSP, is used for monitoring in real time the variation of network system reactive power, and three thyristor 1-2 are detected in real time and control, and Thyristor Controlled Reactor 1 is carried out real-time regulated.And have the combined network communication function, can check time, operational mode, switching group and busbar voltage, electric current, power factor;
Filter 2 is used for providing constant capacitive reactive power to the rig network system, and the rig electrical network is carried out harmonic wave suppress and reactive power compensation;
Thyristor Controlled Reactor 1 is used to produce variable inductive load.
The utility model dynamic compensating device adopts fixed capacitor 2 and Thyristor Controlled Reactor 1 structure in parallel, be applied to the grid that oil-well rig voltage is 400V or 600V, adjust the electric current that flows through reactor 1-3 by thyristor 1-2, make the loop of Thyristor Controlled Reactor 1 produce variable inductive load.Specific filtering channel is formed by filtering capacitor and filter reactor in the loop of fixed capacitor 2, provides constant capacitive reactive power to the oil-well rig network system, the rig electrical network is carried out harmonic wave suppress and reactive power compensation.
The utility model dynamic compensating device can carry out automatic switching and adjusting according to the size of reactive power in the oil-well rig grid system and the requirement of power factor, realize the dynamic compensation of reactive power fast, guarantee that the power factor of network system remains on more than 0.93.The variation of this dynamic compensating device real-time tracking load 3, the response time is less than 10ms, can be fast the dynamic reactive power of controllable compensating rig network system, idle adjustable range is 0～100%, and the idle phenomenon of sending does not all take place in any case.Simultaneously; the safeguard measure of this dynamic compensating device is complete; the automaticity height; fault or withdraw from automatically when having a power failure externally; automatically resume operation after sending electricity, adapt to the situation that oil-well rig electric power system inductive load is many, load suddenlys change at any time, can suppress harmonic wave; improve rig operational reliability and fail safe, be fit to the open-air operating mode in oil field.
Claims (1)
1. oil-well rig electric power system dynamic compensating device, it is characterized in that, comprise Thyristor Controlled Reactor (1) and filter (2) in parallel, Thyristor Controlled Reactor (1) comprises controller (1-1), Thyristor Controlled Reactor (1) also comprises three thyristors (1-2) that head and the tail are connected successively, the two ends of each thyristor (1-2) are in series with a reactor (1-3) respectively, and controller (1-1) is connected with three thyristors (1-2) respectively, and controller (1-1) adopts DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200331051U CN201398079Y (en) | 2009-05-13 | 2009-05-13 | Dynamic compensation device of oil well rig power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200331051U CN201398079Y (en) | 2009-05-13 | 2009-05-13 | Dynamic compensation device of oil well rig power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201398079Y true CN201398079Y (en) | 2010-02-03 |
Family
ID=41620610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200331051U Expired - Fee Related CN201398079Y (en) | 2009-05-13 | 2009-05-13 | Dynamic compensation device of oil well rig power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201398079Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074973A (en) * | 2011-01-18 | 2011-05-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Hosting mode-based distributed power supply synchronizing method and device |
| CN112583028A (en) * | 2020-12-07 | 2021-03-30 | 西藏先锋绿能环保科技股份有限公司 | Reactive compensation and harmonic suppression method and device for electric drilling machine |
-
2009
- 2009-05-13 CN CN2009200331051U patent/CN201398079Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074973A (en) * | 2011-01-18 | 2011-05-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Hosting mode-based distributed power supply synchronizing method and device |
| CN102074973B (en) * | 2011-01-18 | 2013-02-06 | 国网电力科学研究院武汉南瑞有限责任公司 | Hosting mode-based distributed power supply synchronizing method and device |
| CN112583028A (en) * | 2020-12-07 | 2021-03-30 | 西藏先锋绿能环保科技股份有限公司 | Reactive compensation and harmonic suppression method and device for electric drilling machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201742107U (en) | Power quality regulating device based on stored energy of super capacitor | |
| CN101969201A (en) | Dynamic voltage stabilizer for assisting wind driven generator in realizing low voltage ride through (LVRT) | |
| CN102097793B (en) | Multi-current converter unified power quality conditioning device for power distribution system | |
| CN104009497B (en) | A kind of LVRT Capability of Wind Turbine Generator and active power filter compensating device and changing method | |
| CN101950974A (en) | Electric energy quality regulating system based on energy storing of super capacitor | |
| CN104953605A (en) | Interphase unbalance management circuit, system and method for three-phase network | |
| CN102769389B (en) | Transformer-free series voltage quality regulator based on parasitic booster circuit and control method of regulator | |
| CN101409450B (en) | Static state synchronization reactive compensator connected through capacitance impedance and control method (thereof) | |
| CN206790103U (en) | A kind of voltage dip/temporarily rise controlling device | |
| CN201398079Y (en) | Dynamic compensation device of oil well rig power supply system | |
| CN202333813U (en) | Multifunctional electric energy quality regulator based on voltage type inverter | |
| CN201829955U (en) | Dynamic voltage stabilizer for helping wind power generator to implement low voltage ride-through | |
| CN206673592U (en) | A kind of comprehensive compensation type alternating current steady voltage plug | |
| CN201590764U (en) | Mine hoist high voltage variable frequency power unit with voltage self adaptation | |
| Rodda Shobha Rani | VSC based DSTATCOM & pulse-width modulation for power quality improvement | |
| CN205753433U (en) | It is applied to the device administering three-phase imbalance of low-voltage distribution network | |
| CN108777487B (en) | Circuit link between alternating current-direct current hybrid micro-grid and power distribution network and control method | |
| CN207939211U (en) | Distributed power generation pressure regulation filtering system | |
| CN101247073A (en) | Energy feedback and harmonic reactive-load compensation system suitable for multi-group commutating device | |
| CN102723724B (en) | A kind of novel static dynamic reactive generator device and method thereof | |
| Zheng et al. | Reactive optimization control for the wind farm with static var compensator (SVC) | |
| CN205160381U (en) | Converter back -to -back of brushless double -fed generator | |
| CN106026132A (en) | Intelligent power grid voltage reactive power adjustment device | |
| CN108777468B (en) | Multifunctional intensive direct-current ice melting device | |
| CN201797321U (en) | Static reactive power compensation generator for power distribution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20140513 |