CN103944173A - Fast and dynamic automatic reactive compensation device for offshore platform grid - Google Patents
Fast and dynamic automatic reactive compensation device for offshore platform grid Download PDFInfo
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- CN103944173A CN103944173A CN201410094456.9A CN201410094456A CN103944173A CN 103944173 A CN103944173 A CN 103944173A CN 201410094456 A CN201410094456 A CN 201410094456A CN 103944173 A CN103944173 A CN 103944173A
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- compensation device
- cabinet
- offshore platform
- dynamic reactive
- reactive power
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- 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
Abstract
The invention relates to a fast and dynamic automatic reaction compensation device for an offshore platform grid. The fast and dynamic automatic reaction compensation device comprises a fast and dynamic automatic reactive compensation device body which is sequentially composed of a control cabinet, a power cabinet and a charging cabinet. The fast and dynamic automatic reactive compensation device body is directly connected to an offshore platform grid bus and is provided with a DSP digital control system and an IGBT full-control type power device and further provided with a cooling system. The power cabinet is composed of three columns of drawer type power units and a cabinet body top fan. Each column of drawer type power units are connected in series and belong to one phase. The charging cabinet is composed of a connection reactor, a vacuum contactor, a charging resistor and a cabinet body top fan. The fast and dynamic automatic reaction compensation device is small in occupied area, small in construction amount and suitable for the offshore platform grid. According to the compensation technology, corrosion resisting treatment and salt mist resisting treatment are integrally performed, and it is ensured that the device can reliably operate on an offshore platform under special natural conditions. The DSP digital control system and the IGBT full-control type power device are adopted, the response speed is smaller than or equal to 5 ms, and precision is high. The reactive power needed by the grid is calculated in real time, dynamic tracing and compensating are achieved, and multiple control modes of voltage control and constant reactive power are achieved.
Description
Technical field
The present invention relates to a kind of Technology of Dynamic Reactive Power Compensation fast, particularly relate to a kind of quick dynamic reactive power automatic compensation device that improves the quality of power supply being applied in offshore platform electrical network.
Background technology
China constantly strengthens the exploration and development to offshore oil and natural gas resource at present, promotes a large amount of construction of offshore platform thereupon, and the supply of electric power of offshore platform becomes the important step of offshore oil and natural gas resource exploitation.Along with the development of power electronic technology, a large amount of nonlinear-loads accesses electrical network simultaneously.The power supply quality of offshore platform electrical network is had a strong impact on, not only can cause a large amount of waste of energy, also affect the normal operation of power consumption equipment.There are shunt capacitor, dynamic reactive compensation device SVC and improve the common compensation arrangement adopting of the quality of power supply, but due to the particularity of offshore platform natural conditions, free space is limited, salt fog is larger, adopt dynamic reactive compensation device SVC floor space larger, disperse seriously in the air-core reactor magnetic field of SVC, make steel platform structure part produce eddy current effect, and civil engineering amount is large; If the compensation that employing shunt capacitor can not be quick, accurate, continuous, can produce parallel resonance while having harmonic wave, amplify harmonic wave, burn capacitor.
Summary of the invention
The object of this invention is to provide a kind ofly possess fast, accurately, the quick dynamic reactive power automatic compensation device of the offshore platform electrical network of Continuous Compensation, this technology floor space is little, and construction volume is little, adopts the anti-design of iron core reactor, without electromagnetic interference, more meet the application of offshore platform site environment.
For achieving the above object, the present invention is achieved through the following technical solutions:
The quick dynamic reactive power automatic compensation device of offshore platform electrical network, comprise that control cubicle, power cabinet, charging cabinet are arranged in order the quick dynamic reactive power automatic compensation device of composition, be directly parallel on offshore platform electrical network bus, described quick dynamic reactive power automatic compensation device is provided with DSP numerical control system and IGBT full-control type power device, and described quick dynamic reactive power automatic compensation device is also provided with cooling system; Described power cabinet is made up of three row drawer-type power units and cabinet top blower fan, and every row drawer-type power unit is connected in series, and often classifies a phase as; Described charging cabinet is made up of linked reactor, vacuum contactor, charging resistor, cabinet top blower fan.
Described DSP numerical control system and IGBT full-control type power device response speed are not more than 5ms.
The quick dynamic reactive power automatic compensation device of described offshore platform electrical network, sampling line voltage, current signal, calculate the required reactive power of electrical network in real time, realizes and dynamically following the tracks of and compensation.
The quick dynamic reactive power automatic compensation device of described offshore platform electrical network, possesses voltage control and permanent reactive power various control pattern.Voltage control is by the control variables measuring is compared with reference value, then be input to the transfer function of controller, controller obtains required reactive current value according to the U-I characteristic curve of quick dynamic reactive power automatic compensation device, then by the current closed-loop control to quick dynamic reactive power automatic compensation device, the electric current that makes quick dynamic reactive power automatic compensation device send (absorption) equals given reactive current value.The operating state of so quick dynamic reactive power automatic compensation device changes the variation with system situation, in the time that voltage is high, the more perception of output is idle, in the time that voltage ratio is lower, export more capacitive reactive power, thereby make system voltage stable within limits.Permanent idle control calculates instantaneous reactive then by the closed-loop control of pi regulator by Instantaneous Power Theory, and the idle set-point that equals that quick dynamic reactive power automatic compensation device is sent, makes idle constant.
The quick dynamic reactive power automatic compensation device of described offshore platform electrical network, the type of cooling adopts air blast cooling.
Described charging cabinet and the equal epoxy of power cabinet inner copper line are coated, the coated also spray epoxy of gauze for junction between copper bar and copper bar.
In described charging cabinet, linked reactor adopts epoxy pouring type reactor.
Compared with prior art, the invention has the beneficial effects as follows:
1) quick dynamic reactive power automatic compensation device, floor space is little, and construction volume is little, is applicable to offshore platform power grid application;
2) copper bar in cabinet, cable, bolt, board, linked reactor etc. all carry out anticorrosion and anti-salt fog processing, and guarantee equipment is reliability service under platform special natural condition at sea;
3) adopt DSP numerical control system and IGBT full-control type power device response speed≤5ms, precision high, calculate in real time the required reactive power of electrical network, realize and dynamically following the tracks of and compensation, possess voltage and permanent idle various control pattern;
4) drawer-type power unit shell adopts drawing structure of aluminium alloy, compact conformation, mechanical strength is high, antivibration is effective, drawer-type power unit entirety adopts design of Sealing Structure and directed air inlet/outlet technology, has solved the high power device difficult problem of dispelling the heat;
5) fast dynamic reactive power automatic compensation device cabinet all adopts the entirety technology of spraying paint, and prevents paint, well ensures that cabinet is not corroded.
Brief description of the drawings
Fig. 1 is the quick dynamic reactive power automatic compensation device front view of the offshore platform electrical network described in example of the present invention.
Fig. 2 is the quick dynamic reactive power automatic compensation device dorsal view of the offshore platform electrical network described in example of the present invention.
Fig. 3 is the quick dynamic reactive power automatic compensation device stereogram of the offshore platform electrical network described in example of the present invention.
Fig. 4 is the quick dynamic reactive power automatic compensation device three-dimensional structure diagram of the offshore platform electrical network described in example of the present invention.
Fig. 5 is the quick dynamic reactive power automatic compensation device main wiring diagram of the offshore platform electrical network described in example of the present invention.
Fig. 6 is the quick dynamic reactive power automatic compensation device U-I performance diagram of offshore platform electrical network of the present invention.
Fig. 7 is the voltage control block diagram of the quick dynamic reactive power automatic compensation device of offshore platform electrical network of the present invention.
Fig. 8 is the idle control block diagram of perseverance of the quick dynamic reactive power automatic compensation device of offshore platform electrical network of the present invention.
In figure: 1-control cubicle 2-power cabinet 3-charging cabinet 4-blower fan 5-drawer-type power unit 6-linked reactor 7-vacuum contactor 8-charging resistor.
Embodiment
Below in conjunction with accompanying drawing, technology contents of the present invention is described in further details.
See shown in Fig. 1-4 that the quick dynamic reactive power automatic compensation device of offshore platform electrical network comprises that control cubicle 1, power cabinet 2, charging cabinet 3 are arranged in order the quick dynamic reactive auto-compensation SVG of composition, are directly parallel on offshore platform electrical network bus; Described power cabinet 2 is made up of three row drawer-type power units 5 and cabinet top blower fan 4, and every row drawer-type power unit 5 is connected in series, and often classifies a phase as; Described charging cabinet is made up of linked reactor 6, vacuum contactor 7, charging resistor 8, cabinet top blower fan 4.
See shown in Fig. 1, Fig. 5, the quick dynamic reactive power automatic compensation device of offshore platform electrical network, by control cubicle 1 sample line voltage, current signal, in the required reactive power of the interior real-time calculating electrical network of control cubicle 1, then send trigger impulse and make it to send idle to the power cell of power cabinet 2, realize and dynamically following the tracks of and compensation.Power cabinet 2 is made up of three row drawer-type power units 5 and cabinet top blower fan 4, each drawer-type power unit is made up of power device, thin-film capacitor and drive plate, thin-film capacitor is in parallel with power device, and top blower fan 4 uses for drawer-type power unit 5 heat radiations; Charging cabinet 3 is made up of linked reactor 6, vacuum contactor 7, charging resistor 8, cabinet top blower fan 4, when charging, vacuum contactor 7 disconnects, be power section charging by charging resistor 8 and linked reactor 6, after charging, vacuum contactor 7 closures bypass charging resistor 8, reduce active loss, top blower fan 4 uses for linked reactor 6 heat radiations.
See shown in Fig. 6-8 that the quick dynamic reactive power automatic compensation device of offshore platform electrical network possesses voltage control and permanent reactive power various control pattern.Shown in Fig. 6,7, voltage control is taking busbar voltage as controlling target, by the voltage signal of the sampling plate acquisition system in control cubicle, signal is transferred to CPU board and compares calculating, whether detect busbar voltage higher or lower than the limits presetting, then by CPU board signal transmission to PWM plate, then send driving signal by PWM plate, the IGBT device ordering about in power cell cut-offs; The waveform sending based on the quick dynamic reactive power automatic compensation device power section of PWM principle is pulse width modulated wave, under the afterflow effect of reactor, pulse width modulated wave afterflow is become near sinusoidal ripple, compensates thereby export corresponding reactive current.Voltage control is specifically compared with reference value by the control variables measuring, then be input to the transfer function of controller, controller obtains required reactive current value according to the U-I characteristic curve of quick dynamic reactive power automatic compensation device, then by the current closed-loop control to quick dynamic reactive power automatic compensation device, the electric current that makes quick dynamic reactive power automatic compensation device send (absorption) equals given reactive current value.The operating state of so quick dynamic reactive power automatic compensation device changes the variation with system situation, in the time that voltage is high, the more perception of output is idle, in the time that voltage ratio is lower, export more capacitive reactive power, thereby make system voltage stable within limits.Shown in Fig. 8, permanent idle control is idle as controlling target taking bus, by the voltage and current signal of the sampling plate acquisition system in control cubicle, signal is transferred to CPU board to be calculated, whether isolated-phase buses is idle constant in the scope presetting, then by CPU board signal transmission to PWM plate, then send driving signal by PWM plate, the IGBT device ordering about in power cell cut-offs; The waveform sending based on PWM principle SVG power section is pulse width modulated wave, in the afterflow effect of reactor, pulse width modulated wave afterflow is become near sinusoidal ripple, compensates thereby export corresponding reactive current.Permanent idle control specifically calculates instantaneous reactive then by the closed-loop control of pi regulator by Instantaneous Power Theory, and the idle set-point that equals that quick dynamic reactive power automatic compensation device is sent, makes idle constant.
See shown in Fig. 1-4, the quick dynamic reactive power automatic compensation device of described offshore platform electrical network, the type of cooling adopts air blast cooling, and wind enters in cabinet by power cabinet 2 and charging cabinet 3 air inlet below, after power cell radiator, by cabinet top heat dissipation blower fan, heat is discharged.
As shown in Figure 4, charging cabinet 3 and the equal epoxy of power cabinet 2 inner copper line are coated, the coated also spray epoxy of gauze for junction between copper bar and copper bar.
See shown in Fig. 1, Fig. 4, the interior linked reactor 6 of charging cabinet 3 adopts epoxy pouring type reactor.
Claims (5)
1. the quick dynamic reactive power automatic compensation device of offshore platform electrical network, it is characterized in that: comprise that control cubicle, power cabinet, charging cabinet are arranged in order the quick dynamic reactive power automatic compensation device of composition, be directly parallel on offshore platform electrical network bus, described quick dynamic reactive power automatic compensation device is provided with DSP numerical control system and IGBT full-control type power device, and described quick dynamic reactive power automatic compensation device is also provided with cooling system; Described power cabinet is made up of three row drawer-type power units and cabinet top blower fan, and every row drawer-type power unit is connected in series, and often classifies a phase as; Described charging cabinet is made up of linked reactor, vacuum contactor, charging resistor, cabinet top blower fan.
2. the quick dynamic reactive power automatic compensation device of offshore platform electrical network as claimed in claim 1, is characterized in that: described DSP numerical control system and IGBT full-control type power device response speed are not more than 5ms.
3. the quick dynamic reactive power automatic compensation device of offshore platform electrical network as claimed in claim 1, is characterized in that: described cooling system is the forced air cooling.
4. the quick dynamic reactive power automatic compensation device of offshore platform electrical network as claimed in claim 1, is characterized in that: described charging cabinet and the equal epoxy of power cabinet inner copper line are coated, the coated and spray epoxy of gauze for junction between copper bar and copper bar.
5. the quick dynamic reactive automatic compensatory technique of offshore platform electrical network as claimed in claim 1, is characterized in that: in described charging cabinet, linked reactor adopts epoxy pouring type reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094456.9A CN103944173A (en) | 2014-03-14 | 2014-03-14 | Fast and dynamic automatic reactive compensation device for offshore platform grid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094456.9A CN103944173A (en) | 2014-03-14 | 2014-03-14 | Fast and dynamic automatic reactive compensation device for offshore platform grid |
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| CN103944173A true CN103944173A (en) | 2014-07-23 |
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| CN201410094456.9A Pending CN103944173A (en) | 2014-03-14 | 2014-03-14 | Fast and dynamic automatic reactive compensation device for offshore platform grid |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2065994A2 (en) * | 2007-11-28 | 2009-06-03 | ABB Oy | Compensation of harmonics of electrical network |
| CN202282615U (en) * | 2011-10-27 | 2012-06-20 | 荣信电力电子股份有限公司 | Integrated intensive type SVG (static var generator) cabinet based on multi-unit integrated drawer type power module |
| CN102545221A (en) * | 2011-04-06 | 2012-07-04 | 上海华盾石油工程技术有限公司 | Full-active dynamic harmonic suppression and reactive compensation system used for direct current motor-driven drilling machines |
| CN103490430A (en) * | 2013-09-24 | 2014-01-01 | 国家电网公司 | High-voltage static var compensator |
| CN203761052U (en) * | 2014-03-14 | 2014-08-06 | 中国海洋石油总公司 | Rapid dynamic automatic reactive power compensation device of offshore platform electrical network |
-
2014
- 2014-03-14 CN CN201410094456.9A patent/CN103944173A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2065994A2 (en) * | 2007-11-28 | 2009-06-03 | ABB Oy | Compensation of harmonics of electrical network |
| CN102545221A (en) * | 2011-04-06 | 2012-07-04 | 上海华盾石油工程技术有限公司 | Full-active dynamic harmonic suppression and reactive compensation system used for direct current motor-driven drilling machines |
| CN202282615U (en) * | 2011-10-27 | 2012-06-20 | 荣信电力电子股份有限公司 | Integrated intensive type SVG (static var generator) cabinet based on multi-unit integrated drawer type power module |
| CN103490430A (en) * | 2013-09-24 | 2014-01-01 | 国家电网公司 | High-voltage static var compensator |
| CN203761052U (en) * | 2014-03-14 | 2014-08-06 | 中国海洋石油总公司 | Rapid dynamic automatic reactive power compensation device of offshore platform electrical network |
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Application publication date: 20140723 |
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