CN204361687U - Many combined parallels static reacance generator - Google Patents
Many combined parallels static reacance generator Download PDFInfo
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- CN204361687U CN204361687U CN201420728891.8U CN201420728891U CN204361687U CN 204361687 U CN204361687 U CN 204361687U CN 201420728891 U CN201420728891 U CN 201420728891U CN 204361687 U CN204361687 U CN 204361687U
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- reacance generator
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
Abstract
The utility model discloses a kind of many combined parallels static reacance generator, the TSC capacity in prior art that mainly solves is large and can not reach fine compensation, and the problem that SVG energy fine compensation capacity is little.This many combined parallels static reacance generator, comprise having and drive the static reacance generator unit of IGBT module, many group TSC unit and the master controller for controlling described static reacance generator unit and the described TSC unit of many groups, described static reacance generator unit and the described TSC unit of many groups are all connected with electrical network, and parallel with one another; Described master controller also comprises TMS320F28335 floating type dsp chip, EP1C6T144I7 cake core.By such scheme, the utility model reaches and realizes Large Copacity, high accuracy, object that real-time is good.
Description
Technical field
The utility model relates to a kind of many combined parallels static reacance generator, belong to power system reactive power compensation technical field.
Background technology
Along with the continuous progress of power electronic technology, more and more non-linear, impact reactive load is used in electric power system, if in electric power system, idle under-reserve can cause the decline of system power factor, Voltage unbalance, Voltage Drop, line loss increase thus affect the quality of power supply on the one hand, can power system collapse be caused time serious, cause heavy losses; Reactive power is also maintain various induction equipment electromagnetic field in electric power system on the other hand, carries out electric energy conversion, transmits necessary energy.Therefore, often need in actual motion to carry out local compensation to reactive power.
Reactive power technology is in evolution, successively there is several different reactive power compensator, static passive compensation device (Static Var Compensator-SVC), static reacance generator (Static Var Generator-SVG), wherein SVC can compensate Large Copacity, but can not fine compensation, and SVG can realize accurate reactive power compensation, but because the switching frequency of current power electronic device limits, its compensation capacity is often limited, SVC and SVG all can not realize Large Copacity, high accuracy and real-time is good simultaneously.
Summary of the invention
The utility model can not reach fine compensation greatly for TSC capacity in prior art, and SVG energy fine compensation capacity is little, provide a kind of many combined parallels static reacance generator, static reacance generator (SVG) unit and the parallel connection of many group TSC unit are used and carries out reactive power compensation, realize Large Copacity, high accuracy, reactive power compensator that real-time is good.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of many combined parallels static reacance generator, comprise having and drive the static reacance generator unit of IGBT module, many group TSC unit and the master controller for controlling described static reacance generator unit and the described TSC unit of many groups, described static reacance generator unit and the described TSC unit of many groups are all connected with electrical network, and parallel with one another; Master controller gathers line voltage, power network current and static reacance generator output current, carry out idle detection, group number according to static reacance generator capacity and TSC unit carries out reasonable distribution, realize static reacance generator and organize the mutual cooperation of TSC unit, and then achieve the Continuous Compensation on a large scale of power system reactive power more.
Particularly, described master controller comprises the signal control circuit of pwm pulse signal circuit and many group TSC unit, described pwm pulse signal circuit is for driving described IGBT module, can receive the Feedback failure information of described IGBT module, the signal control circuit of described many group TSC unit is for controlling the on off state of each described TSC unit simultaneously; The signal control circuit of many groups TSC unit realizes no-power compensation function of the present utility model by the on off state controlling the anti-parallel thyristor in each described TSC unit; Pwm pulse signal circuit can receive the Feedback failure information of IGBT module, and static reacance generator unit is protected in time, makes functional reliability of the present utility model higher.
Particularly, described master controller also comprises electric current and voltage sample circuit, and described electric current and voltage sample circuit is for gathering line voltage, power network current, equipment output current and DC voltage; For realizing static reacance generator unit DC voltage, the double-closed-loop control of output current provides guarantee.
Particularly, described static reacance generator is made up of three-phase full-bridge inverter, LCL filter and DC side Support Capacitor; Direct voltage after the energy storage of DC side Support Capacitor exports required voltage and reactive power compensation electric current by three-phase full-bridge inverter under different on off states, again by LCL filter filtering, realize reactive power compensation function, LCL filter can suppress spike and high order harmonic component, effectively prevent external disturbance, improve antijamming capability of the present utility model.
More specifically, described master controller also comprises TMS320F28335 floating type dsp chip, EP1C6T144I7 cake core.
Further, the optical communication interface of described master controller is connected with LCDs; LCDs is used for showing line voltage, the effective value of electric current, control command, power factor (PF) and equipment running status in real time, makes the running status of using state of the present utility model and each equipment more clear and intuitive, makes the utility model easy to use.
More specifically, described master controller is arranged in described static reacance generator unit.
Compared with prior art, the utility model has following beneficial effect:
(1) the utility model is reasonable in design, by static reacance generator unit and many group TSC unit parallel combinations, not only achieve the no-power compensation function that equipment Large Copacity, high accuracy and real-time are good, and be easy to realize, compensation speed is fast, main controller system controls all unit are unified, convenient operation and management.
(2) the utility model flexibility is strong, can according to the mono-number of tuples of actual load reactive capability demand apolegamy TSC.
(3) in the utility model, pwm pulse signal circuit can receive the Feedback failure information of IGBT module, and static reacance generator unit is protected in time, makes functional reliability of the present utility model higher.
(4) in the utility model, LCL filter can suppress spike and high order harmonic component, effectively prevents external disturbance, improves antijamming capability of the present utility model.
(5) in the utility model, LCDs is used for showing line voltage, the effective value of electric current, control command, power factor (PF) and equipment running status in real time, make the running status of using state of the present utility model and each equipment more clear and intuitive, make the utility model easy to use.
Accompanying drawing explanation
Fig. 1 is system configuration schematic diagram of the present utility model;
Fig. 2 is the control schematic diagram of master controller and unit;
Fig. 3 is the internal structure schematic diagram of static reacance generator unit;
Fig. 4 is master controller reactive capability process schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and execution mode of the present utility model includes but not limited to the following example.
As shown in Figure 1, many combined parallels static reacance generator, comprise having and drive the static reacance generator unit of IGBT module, many group TSC unit and the master controller for controlling static reacance generator unit and many group TSC unit, static reacance generator unit and many group TSC unit are all connected with electrical network, and parallel with one another, master controller is arranged in static reacance generator unit; Master controller gathers line voltage, power network current and static reacance generator output current, carry out idle detection, group number according to static reacance generator capacity and TSC unit carries out reasonable distribution, realize static reacance generator and organize the mutual cooperation of TSC unit, and then achieve the Continuous Compensation on a large scale of power system reactive power more.
As shown in Figure 2, master controller comprises the signal control circuit of electric current and voltage sample circuit, pwm pulse signal circuit and many group TSC unit, pwm pulse signal circuit is for driving IGBT module, the Feedback failure information of IGBT module can be received simultaneously, the signal control circuit of many groups TSC unit is for controlling the on off state of each TSC unit, and electric current and voltage sample circuit is for gathering line voltage, power network current, equipment output current and DC voltage; The signal control circuit of many groups TSC unit realizes no-power compensation function of the present utility model by the on off state controlling the anti-parallel thyristor in each TSC unit.
After master controller carries out idle detection, output drive signal produces reactive current to static reacance generator and many group TSC unit through cooperation and is back to electrical network, and all sampled signals and control command are sent to LCDs display by optical-fibre communications; Make the running status of using state of the present utility model and each equipment more clear and intuitive, make the utility model easy to use.
Line voltage and power network current signal send master controller to, calculate for realizing electric network reactive-load, and equipment output current and DC voltage signal are used for the double-closed-loop control of the inner DC voltage of static reacance generator unit and reactive power compensation electric current.
The pwm signal that static reacance generator unit real-time reception master controller sends, sends reactive current, thus fine compensation electric network reactive-load electric current.
Pwm signal has hardware interlock and fault alarm function, carries out instantaneous protection to the over-voltage and over-current of power device, and can hardware lockout PWM drive pulse signal, and feedback fault message is to master controller; Static reacance generator unit is protected in time, makes functional reliability of the present utility model higher.
The TSC pulse signal that many groups group TSC unit real-time reception master controller sends, real-time switching TSC unit, thus realize Large Copacity compensation network reactive current.
As shown in Figure 3, static reacance generator unit comprises LCL filter, three phase full bridge inverter output circuit and DC side storage capacitor; LCL filter can suppress spike and high order harmonic component, and the intrusion static reacance generator that prevents external disturbance to be coupled is inner, improves antijamming capability of the present utility model, make three phase full bridge inverter output circuit export reactive current safe and reliable return electrical network.
Three phase full bridge inverter output circuit is the core component of static reacance generator unit, is the key controlling to produce required reactive current; DC side storage capacitor provides direct current channel, as the DC power supply of three-phase full-bridge inverter for three-phase full-bridge inverter.
As shown in Figure 4, master controller reactive capability process schematic diagram, first detection of grid electric current and voltage, calculate reactive capability needed for electrical network, according to static reacance generator capacity and TSC group number and capacity, carry out effective amplitude limit to the reactive capability calculated, reasonable distribution is idle, wherein Large Copacity is idle is compensated by TSC unit group, and low capacity is idle by SVG unit fine compensation.
Master controller also comprises and being made up of the TMS320F28335 floating type dsp chip of American TI Company, the EP1C6T144I7 chip of altera corp Cyclone series and the clock circuit be connected separately with it, power circuit, jtag interface, peripheral circuit; Peripheral circuit comprises the signal control circuit of electric current and voltage sample circuit, pwm pulse signal circuit and many group TSC unit.
The utility model is reasonable in design, and the flexible easily extensible of capacity, design and installation are conveniently, technique is simple, cost is low, reliability is high, electromagnetic interference is little, is applicable to the reactive power compensation of each class capabilities demand on-the-spot.
According to above-described embodiment, just the utility model can be realized well.What deserves to be explained is; under prerequisite based on said structure design; for solving same technical problem; even if some making on the utility model are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the utility model, therefore it also should in protection range of the present utility model.
Claims (6)
1. combined parallel static reacance generator more than a kind, comprise the static reacance generator unit having and drive IGBT module, it is characterized in that, also comprise many group TSC unit and the master controller for controlling described static reacance generator unit and the described TSC unit of many groups, described static reacance generator unit and the described TSC unit of many groups are all connected with electrical network, and parallel with one another; Described master controller comprises the signal control circuit of pwm pulse signal circuit and many group TSC unit, described pwm pulse signal circuit is for driving described IGBT module, can receive the Feedback failure information of described IGBT module, the signal control circuit of described many group TSC unit is for controlling the on off state of each described TSC unit simultaneously.
2. many combined parallels static reacance generator according to claim 1, it is characterized in that, described master controller also comprises electric current and voltage sample circuit, and described electric current and voltage sample circuit is for gathering line voltage, power network current, equipment output current and DC voltage.
3. many combined parallels static reacance generator according to claim 1, is characterized in that, described static reacance generator is made up of three-phase full-bridge inverter, LCL filter and DC side Support Capacitor.
4. many combined parallels static reacance generator according to claim 1, is characterized in that, described master controller also comprises TMS320F28335 floating type dsp chip, EP1C6T144I7 cake core.
5. many combined parallels static reacance generator according to claim 1, is characterized in that, the optical communication interface of described master controller is connected with LCDs.
6. many combined parallels static reacance generator according to claim 1, is characterized in that, described master controller is arranged in described static reacance generator unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728891.8U CN204361687U (en) | 2014-11-28 | 2014-11-28 | Many combined parallels static reacance generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728891.8U CN204361687U (en) | 2014-11-28 | 2014-11-28 | Many combined parallels static reacance generator |
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| CN204361687U true CN204361687U (en) | 2015-05-27 |
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| CN201420728891.8U Active CN204361687U (en) | 2014-11-28 | 2014-11-28 | Many combined parallels static reacance generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451478A (en) * | 2016-11-18 | 2017-02-22 | 中国电力科学研究院 | Coordinated control method and system used among dynamic reactive power compensating devices |
| CN110955178A (en) * | 2019-11-26 | 2020-04-03 | 胜业电气股份有限公司 | Electric energy quality intelligent controller based on DSP technology |
-
2014
- 2014-11-28 CN CN201420728891.8U patent/CN204361687U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451478A (en) * | 2016-11-18 | 2017-02-22 | 中国电力科学研究院 | Coordinated control method and system used among dynamic reactive power compensating devices |
| CN110955178A (en) * | 2019-11-26 | 2020-04-03 | 胜业电气股份有限公司 | Electric energy quality intelligent controller based on DSP technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528308 North 4 Lunjiao Xinxi Fourth Road, Shunde District, Foshan City, Guangdong Province Patentee after: Shengye Electric Co., Ltd. Address before: 528308 North 4 Lunjiao Xinxi Fourth Road, Shunde District, Foshan City, Guangdong Province Patentee before: SHENGYE ELECTRICAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |