CN204089207U - A kind of low pressure static reacance generator - Google Patents
A kind of low pressure static reacance generator Download PDFInfo
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- CN204089207U CN204089207U CN201420533989.8U CN201420533989U CN204089207U CN 204089207 U CN204089207 U CN 204089207U CN 201420533989 U CN201420533989 U CN 201420533989U CN 204089207 U CN204089207 U CN 204089207U
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- 230000003068 static effect Effects 0.000 title claims abstract description 16
- 230000003993 interaction Effects 0.000 claims abstract description 14
- 238000011897 real-time detection Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000008447 perception Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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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 utility model relates to a kind of low pressure static reacance generator, comprises and detecting in real time and power supply unit, control unit, compensating unit, out put reactor and human-computer interaction module; Described real-time detection and power supply unit are made up of voltage transformer, load-side current transformer, out put reactor side current transformer, idle separation module and power-supply system, described power-supply system connects three-phase and four-line electrical network, power to whole system, the output of described real-time detection and power supply unit is connected with described control unit input; Described control unit is made up of A/D module, DSP module, CPU module, and described control unit output is connected with described compensating unit input; Described compensating unit output is connected with described out put reactor one end; The described out put reactor other end connects electrical network; Described human-computer interaction module is connected with described control unit.The utility model improves electrical system security reliability, reaches the object of energy efficiency, simple to operation.
Description
Technical field
The utility model relates to a kind of reacance generator, particularly a kind of electric power low-pressure static reacance generator.
Background technology
At present, many power consumption equipments are according to electromagnetic induction principle work, and as distribution transformer, motor etc., they are all rely on to set up conversion and the transmission that alternating magnetic field just can carry out energy.For setting up alternating magnetic field and induction magnetic flux and the electrical power that needs is called reactive power, therefore in electricity supplying and using system except the meritorious power supply of needs, also need reactive power source, both are indispensable.
Reactive power also produces certain harmful effect to confession, electricity consumption, is mainly manifested in:
(1) output of generator active power is reduced.
(2) apparent power one timing, increases reactive power and will reduce power supply capacity that is defeated, converting equipment.
(3) in electrical network, the flowing of reactive power can cause line voltage distribution to lose the increase of increase and electric energy loss.
(4) low power factor will be caused when system lacks reactive power to run and voltage drop, electric equipment capacity is not in full use.
Non-linear in electrical network, fluctuation, uncompensated load constantly increase, and inject a large amount of impact reactive powers to utility network, and the energy-saving and cost-reducing demand with improving the quality of power supply constantly increases.
Traditional reactive-load compensation method is passive compensation technique, namely uses the passive compensator be made up of the passive device such as power capacitor and filter reactor.In recent years, the static reacance generator technology (SVG) being representative with IGBT technology starts scale application.
Compared with passive compensator, SVG fast response time, controllability are high, the reactive power of the required change of the demand of the various idle change of energy tracing compensation, static generation load, simultaneously, SVG also has characteristic by systematic influence, the outstanding advantages such as danger, small in volume without Harmonics amplification, because becoming the important means of electric reactive compensating.
Summary of the invention
The purpose of this utility model is to provide a kind of electric power static reacance generator, and the static real-time tracking compensation way of this generator employing advanced person eliminates the reactive loss in electrical network, can produce the idle and capacitive reactive power of perception, to realize the function of its saving energy and decreasing loss.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is: a kind of electric power low-pressure static reacance generator, comprising: detect in real time and power supply unit, control unit, compensating unit, out put reactor and human-computer interaction module; Described real-time detection and power supply unit comprise the voltage transformer detecting load side voltage, the first current transformer detecting load-side electric current, the second current transformer detecting out put reactor side electric current, idle separation module and power-supply system, described power-supply system connects three-phase and four-line electrical network, power to whole system, the output of described real-time detection and power supply unit is connected with described control unit input; Described control unit adopts the digitial controller based on FPGA, and described control unit comprises A/D module, DSP module, CPU module, and described control unit output is connected with described compensating unit input; Described compensating unit output is connected with described out put reactor one end; The described out put reactor other end connects electrical network; Described human-computer interaction module is connected with described control unit.
In the utility model embodiment, described compensating unit comprises three-phase bridge inverter circuit and an electric capacity, and described Capacitance parallel connection is at three-phase bridge inverter circuit two ends, and the electronic devices and components in described three-phase bridge inverter circuit are IGBT.
In the utility model embodiment, described controller is provided with RS232, RS485 communication interface.
In the utility model embodiment, described human-computer interaction module is a LCD touch screen.
Compared to prior art, the utility model has the advantage of:
1, Real-Time Monitoring: the quality of power supply of Real-Time Monitoring distribution system, pass through supervisory control system, grid side, the active power of load-side and reactive power, each phase current size can be read in real time, compensate before and after a series of power quality data such as offset current size, waveform of sending of effect oscillogram and low-voltage reactive power generator, in real time, efficient.
2, there is human-computer interaction module, can realize carrying out background monitoring, remote operation and control to reacance generator, simple, convenient.
3, by detecting load voltage current waveform, obtain the reactive demand needing to compensate, and by the adjustment of voltage current phase, by the triggering of control IGBT, through storage capacitor, to reinject after voltage current phase is adjusted electric power system, realize reducing reactive loss function, thus improve electrical system security reliability, reach the object of energy efficiency.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the utility model is elaborated.
As shown in Figure 1, a kind of low pressure static reacance generator, comprising: detect in real time and power supply unit, control unit, compensating unit 9, out put reactor 10 and human-computer interaction module 11;
Described real-time detection and power supply unit detect the voltage transformer 2 of load side voltage, the first current transformer 1 detecting load-side electric current, the second current transformer 3 detecting out put reactor side electric current, idle separation module 4 and power-supply system 5, described power-supply system 5 connects three-phase and four-line electrical network, power to whole system, the output of described real-time detection and power supply unit is connected with described control unit input; Described control unit adopts the digitial controller based on FPGA, and comprise A/D module 6, DSP module 7, CPU module 8, described control unit output is connected with described compensating unit 9 input; Described compensating unit 9 output is connected with described out put reactor 10 one end; Described out put reactor 10 other end connects electrical network; Described human-computer interaction module 11 is connected with described control unit.
In the utility model specific embodiment, described compensating unit comprises three-phase bridge inverter circuit and an electric capacity, and described Capacitance parallel connection is at three-phase bridge inverter circuit two ends, and the electronic devices and components in described three-phase bridge inverter circuit are IGBT.
In the utility model specific embodiment, described controller is provided with RS232, RS485 communication interface.
In the utility model specific embodiment, described human-computer interaction module 11 is a LCD touch screen.
In the utility model specific embodiment, real-time detection and power supply unit are detected in real time by the electric current of the electric current of the first current transformer 1, voltage transformer 2 and the second current transformer 3 pairs of load-side, voltage and out put reactor 10 side, and idle separation module 4 is by carrying out processing to load-side electric current, voltage waveform the reactive current obtaining and need to compensate;
In the utility model specific embodiment, real-time detection and power supply unit are by the out put reactor 10 side electric current obtained and need the reactive current compensated to export to control unit, by A/D module 6, the signal of Input Control Element is converted into digital signal, drive singal is produced after the computing of DSP module 7, the phase place of this drive singal control and compensation unit 9 pairs of voltages, electric current adjusts, send required offset current size, improve power factor.
Control unit also comprises a CPU module 8, the operation result of storage control unit, and can be connected with human-computer interaction module 11 by data wire or netting twine, in the utility model specific embodiment, described human-computer interaction module 11 is a LCD touch screen, the remote operation to low pressure static reacance generator and control can be realized, simple, convenient.
The phase sequence of voltage, electric current, according to the analysis result of control unit, adjusts by compensating unit 9, by the triggering of IGBT inverter, reverse reactive current is injected electric power system after out put reactor 10.
The utility model low pressure static reacance generator makes different reactions according to several situations of electrical network, and under no-load condition, SVG does not absorb and do not send reactive power yet; In capacitive situation, it is idle to there is perception in SVG; In perception situation, absorb perception idle; Achieve and reduce reactive loss function, thus improve electrical system security reliability, reach the object of energy efficiency.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (4)
1. a low pressure static reacance generator, is characterized in that: comprise and detecting in real time and power supply unit, control unit, compensating unit, out put reactor and human-computer interaction module;
Described real-time detection and power supply unit comprise the voltage transformer detecting load side voltage, the first current transformer detecting load-side electric current, the second current transformer detecting out put reactor side electric current, idle separation module and power-supply system; Described power-supply system connects three-phase and four-line electrical network, for powering to whole system; The output of described real-time detection and power supply unit is connected with described control unit input;
Described control unit adopts the digitial controller based on FPGA, and described control unit comprises A/D module, DSP module and CPU module, and described control unit output is connected with described compensating unit input;
Described compensating unit output is connected with described out put reactor one end;
The described out put reactor other end connects described three-phase and four-line electrical network;
Described human-computer interaction module is connected with described control unit.
2. a kind of low pressure static reacance generator according to claim 1, it is characterized in that, described compensating unit comprises three-phase bridge inverter circuit and an electric capacity, and described Capacitance parallel connection is at three-phase bridge inverter circuit two ends, and the electronic devices and components in described three-phase bridge inverter circuit are IGBT.
3. a kind of low pressure static reacance generator according to claim 1, it is characterized in that, described controller is provided with RS232, RS485 communication interface.
4. a kind of low pressure static reacance generator according to claim 1, is characterized in that, described human-computer interaction module is a LCD touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420533989.8U CN204089207U (en) | 2014-09-17 | 2014-09-17 | A kind of low pressure static reacance generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420533989.8U CN204089207U (en) | 2014-09-17 | 2014-09-17 | A kind of low pressure static reacance generator |
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| Publication Number | Publication Date |
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| CN204089207U true CN204089207U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420533989.8U Expired - Fee Related CN204089207U (en) | 2014-09-17 | 2014-09-17 | A kind of low pressure static reacance generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169605A (en) * | 2018-02-05 | 2018-06-15 | 新风光电子科技股份有限公司 | A kind of test system and method being fully loaded with using SVG realization frequency converters |
-
2014
- 2014-09-17 CN CN201420533989.8U patent/CN204089207U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169605A (en) * | 2018-02-05 | 2018-06-15 | 新风光电子科技股份有限公司 | A kind of test system and method being fully loaded with using SVG realization frequency converters |
| CN108169605B (en) * | 2018-02-05 | 2023-09-08 | 新风光电子科技股份有限公司 | Test system and method for realizing full load of frequency converter by SVG |
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| 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: 20150107 Termination date: 20210917 |