CN203289378U - Electric workover rig control system based on supercapacitor power compensation - Google Patents
Electric workover rig control system based on supercapacitor power compensation Download PDFInfo
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- CN203289378U CN203289378U CN2013202418408U CN201320241840U CN203289378U CN 203289378 U CN203289378 U CN 203289378U CN 2013202418408 U CN2013202418408 U CN 2013202418408U CN 201320241840 U CN201320241840 U CN 201320241840U CN 203289378 U CN203289378 U CN 203289378U
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- workover rig
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- well site
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Abstract
The utility model provides an electric workover rig control system based on supercapacitor power compensation to overcome the deficiencies that energy conversion efficiency is low, oil consumption cost is high, and operation time efficiency is influenced for a present diesel workover rig. The electric workover rig control system is characterized in that a well site grid power supply system comprises a well site transformer and a PWM rectifier, a supercapacitor power compensation system comprises a supercapacitor bank and a bidirectional DC converter, a speed regulating system comprises an inverter and a frequency control motor, and a bus control system comprises a master controller and a DP bus network; and positive and negative electrodes of the supercapacitor bank are respectively connected with positive and negative electrodes of the low-voltage end of the bidirectional DC converter, and positive and negative electrodes of the high-voltage end of the bidirectional DC converter are connected with the DC output bus of the PWM rectifier. The electric workover rig control system has the beneficial effects that power efficiency of the workover rig is improved, and carbon emission is decreased; and power demand for workover operation of the workover rig is satisfied through the supercapacitor power compensation, electric energy is regenerated during lowering operation and fed back to the power grid to further save energy.
Description
Technical field
The utility model relates to a kind of oil-field workover rig control system, especially relates to a kind of by the well site mains supply and by the electric workover rig control system of ultracapacitor power back-off.
Background technology
At present, conventional workover rig majority is used diesel engine as original power, the problem of workover rig present situation and existence:
1, diesel engine drives that the workover rig overall efficiency is low, power utilization is low.
The operation principle of diesel engine is that diesel oil is burnt in the cylinder heat energy that produces is transformed into the mechanical movement of piston, and energy conversion efficiency is lower in energy conversion process.
In workover treatment, need to there be isd the lay day of suspended object.Workover rig promotes and transfers the activity duration is approximately 1: 2 with the ratio of artificial lay day, means that diesel engine will have 66% left and right time to be in the no-load running state, and the diesel engine power utilance is low;
2, contaminated environment, affect the operating personnel physically and mentally healthy.Present most workover rig is take diesel engine as operation power, and a large amount of carbon monoxide, hydrocarbon, the nitrogen oxide of annual discharging, cause the operation field ambient atmosphere to pollute; Simultaneously diesel engine noise maximum in the course of the work can reach 120dB, far above industrial area criteria for noise 65dB between daytime.
Along with improving constantly that environmental protection and energy-saving and emission-reduction require, the electric workover rig of well site electrical network has appearred utilizing, realize workover rig original power " oil changes electricity ", in most cases, total power supply capacity, often less than workover rig total load capacity, belongs to the minor scale power net power supply.Limited by the well site transformer capacity, be equipped with power of motor less, affected the operation timeliness, increased the activity duration of workover rig, can't large-scale promotion use.
The utility model content
Low in order to overcome existing diesel oil workover rig energy conversion efficiency, oil consumption expense cost is high; Electric workover rig is limited by the well site transformer capacity, the power of motor that is equipped with less, affected the deficiency of operation timeliness, the utility model provides a kind of control system of electric workover rig based on super capacitor power back-off.
The technical scheme that its technical problem that solves the utility model adopts is: the utility model solves the technical scheme that its technical problem adopts and is: a kind of control system of electric workover rig based on super capacitor power back-off comprises well site mains supply system, super capacitor power compensating system, governing system, bus control system.Well site mains supply system comprises well site transformer, PWM rectifier; The super capacitor power compensating system comprises bank of super capacitors, two-way DC converter; Governing system comprises inverter, frequency control motor; Bus control system comprises master controller and DP bus network.
Two-way DC converter is Buck/Boost Bi-directional topological structure, the both positive and negative polarity of bank of super capacitors is connected with the low-pressure end both positive and negative polarity of two-way DC converter respectively, and the high-pressure side both positive and negative polarity of two-way DC converter connects on the direct current output bus of PWM rectifier.
Master controller adopts Siemens S7-300 PLC, Profibus-DP communications protocol, the network configuration of DP bus.Wherein, master controller is the main website on the DP bus, and PWM rectifier, inverter, two-way DC converter are the slave station of bus.
In the process of workover treatment, master controller is according to the actual needs power of well site transformer capacity, bank of super capacitors (SOC:state of charge), workover treatment, the power stage of reasonable distribution well site transformer, ultracapacitor,, in the situation that have the well site transformer capacity now, meet the power demand of workover treatment by the power back-off of bank of super capacitors., according to the characteristics of workover rig operation,, in the intermittent time of operation, by well site transformer, PWM rectifier, two-way DC converter, be the bank of super capacitors quick charge simultaneously, energy reserve.
The beneficial effects of the utility model are, with the diesel powered system, compare, and the dynamic efficiency of workover rig can improve 60%, reduce carbon emission; Compare with the electric workover rig of routine, workover rig meets the power demand of workover treatment by super capacitor power back-off, and can be when transferring operation the regenerative electric energy feedback electrical network, further realize energy-conservation.
Description of drawings
Fig. 1 is the electric workover rig control system structural map of the utility model based on super capacitor power back-off.
In figure: 1. well site transformer, 2.PWM rectifier, 3. bank of super capacitors, 4. two-way DC converter, 5. inverter, 6. frequency control motor, 7. master controller, 100. well site mains supply systems, 200. the super capacitor power compensating system, 300. governing systems, 400. bus control systems.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.But what those skilled in the art should know is that the utility model is not limited to listed embodiment, under the prerequisite that does not break away from the utility model aim, all should be included in protection range of the present utility model.
Referring to Fig. 1.A kind of control system of electric workover rig based on super capacitor power back-off of the utility model, comprise well site mains supply system 100, super capacitor power compensating system 200, governing system 300, bus control system 400.Well site mains supply system 100 comprises well site transformer 1, PWM control rectifier 2; Super capacitor power compensating system 200 comprises bank of super capacitors 3, two-way DC converter 4; Governing system 300 comprises inverter 5, frequency control motor 6; Bus control system 400 comprises master controller 7 and DP bus network.
Two-way DC converter 4 is Buck/Boost Bi-directional topological structure, the both positive and negative polarity of bank of super capacitors 3 is connected with the low-pressure end both positive and negative polarity of two-way DC converter respectively, and the high-pressure side both positive and negative polarity of two-way DC converter 4 connects on the direct current output bus of PWM control rectifier 2.This structure is conducive to improve the utilance of ultracapacitor,, meet the quantity that reduces ultracapacitor under the required condition of normal operation as far as possible, improves the economy of energy storage.
Master controller 7 adopts Siemens S7-300 PLC, Profibus-DP communications protocol, the network configuration of DP bus.Wherein, master controller is the main website on the DP bus, and PWM control rectifier 2, inverter 5, two-way DC converter 4 are the slave station of bus.Master controller carries out data communication by DP bus network and each slave station, obtains the running status of each equipment by read-write state word, control word, and controls the operation of each equipment.
In the process of workover treatment, master controller is according to the actual needs power of well site transformer 1 capacity, bank of super capacitors 3 (SOC), workover treatment, the power stage of reasonable distribution well site transformer 1, bank of super capacitors 3,, in the situation that have the well site transformer capacity now, meet the power demand of workover treatment by the power back-off of bank of super capacitors 3., according to the characteristics of workover rig operation,, in the intermittent time of operation, by well site transformer 1, PWM rectifier 2, two-way DC converter 4, be bank of super capacitors 3 quick charges simultaneously, energy reserve.This control mode, can be in the situation that the well site transformer capacity be less, and while utilizing the power back-off function of super capacitor to realize that oil pipe promotes, power input multiplication, meet the requirement of operation timeliness, takes full advantage of simultaneously the well site power grid energy, and electric energy continues balanced input.
When operation was transferred in well workover, PWM rectifier 2 was operated in rectification/regenerating condition, can, to electrical network, reach energy-conservation purpose to greatest extent by regenerative electric energy feedback when transferring operation.
It should be noted, above-described embodiment is explained in detail, but the utility model is not limited to above-described embodiment, and those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (4)
1. the control system of the electric workover rig based on super capacitor power back-off, comprise well site mains supply system (100), super capacitor power compensating system (200), governing system (300), bus control system (400), it is characterized in that:
Described well site mains supply system (100) comprises well site transformer (1), PWM rectifier (2); Described super capacitor power compensating system (200) comprises bank of super capacitors (3), two-way DC converter (4); Described governing system (300) comprises inverter (5), frequency control motor (6); Described bus control system (400) comprises master controller (7) and DP bus network, the both positive and negative polarity of described bank of super capacitors (3) is connected with the low-pressure end both positive and negative polarity of described two-way DC converter (4) respectively, and the high-pressure side both positive and negative polarity of described two-way DC converter (4) is connected with the direct current output bus of described PWM rectifier (2).
2. the control system of the electric workover rig based on super capacitor power back-off according to claim 1, is characterized in that, described two-way DC converter (4) is Buck/Boost Bi-directional topological structure.
3. the control system of the electric workover rig based on super capacitor power back-off according to claim 1 and 2, it is characterized in that, described master controller (7) power stage of power reasonable distribution well site transformer (1), bank of super capacitors (3) according to actual needs in the workover treatment process, and be bank of super capacitors (3) quick charge by well site transformer (1), PWM rectifier (2), two-way DC converter (4) in the operation batch process, energy reserve.
4. the electric workover rig control system of super capacitor power back-off according to claim 3, it is characterized in that, described master controller (7) adopts Siemens S7-300 PLC, the Profibus-DP communications protocol, the network configuration of DP bus, wherein master controller (7) is the main website on the DP bus, and PWM rectifier (2), inverter (5), two-way DC converter (4) are the slave station of DP bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202418408U CN203289378U (en) | 2013-05-07 | 2013-05-07 | Electric workover rig control system based on supercapacitor power compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202418408U CN203289378U (en) | 2013-05-07 | 2013-05-07 | Electric workover rig control system based on supercapacitor power compensation |
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| Publication Number | Publication Date |
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| CN203289378U true CN203289378U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202418408U Expired - Fee Related CN203289378U (en) | 2013-05-07 | 2013-05-07 | Electric workover rig control system based on supercapacitor power compensation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391357A (en) * | 2015-12-10 | 2016-03-09 | 中国飞机强度研究所 | Direct-current motor driving system for dynamic performance test stand |
| CN106685050A (en) * | 2017-03-22 | 2017-05-17 | 吉林大学 | Power compensation type electric workover rig power calculation method |
| US11596047B2 (en) | 2021-04-07 | 2023-02-28 | Yantai Jereh Petroleum Equipments Technologies Co., Ltd. | Fracturing well site system |
| 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 |
-
2013
- 2013-05-07 CN CN2013202418408U patent/CN203289378U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391357A (en) * | 2015-12-10 | 2016-03-09 | 中国飞机强度研究所 | Direct-current motor driving system for dynamic performance test stand |
| CN106685050A (en) * | 2017-03-22 | 2017-05-17 | 吉林大学 | Power compensation type electric workover rig power calculation method |
| CN106685050B (en) * | 2017-03-22 | 2019-10-25 | 吉林大学 | A kind of power compensation formula electric workover rig power calculation algorithms |
| US11596047B2 (en) | 2021-04-07 | 2023-02-28 | Yantai Jereh Petroleum Equipments Technologies Co., Ltd. | Fracturing well site system |
| US11683878B2 (en) | 2021-04-07 | 2023-06-20 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing well site system |
| US11729893B2 (en) | 2021-04-07 | 2023-08-15 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing well site system |
| 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 |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20210507 |