CN202550540U - Electric energy quality control device without series transformer of split-phase energy storage device - Google Patents
Electric energy quality control device without series transformer of split-phase energy storage device Download PDFInfo
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- CN202550540U CN202550540U CN2012201390398U CN201220139039U CN202550540U CN 202550540 U CN202550540 U CN 202550540U CN 2012201390398 U CN2012201390398 U CN 2012201390398U CN 201220139039 U CN201220139039 U CN 201220139039U CN 202550540 U CN202550540 U CN 202550540U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses an electric energy quality control device without series transformers of a split-phase energy storage device and relates to a circuit device for an alternating-current trunk line or an alternating-current power distribution network, in particular to a device for stabilizing voltage and reducing harmonic waves or ripples of a high-voltage alternating-current power network. The electric energy quality control device is connected between a three-phase system power supply and a sensitive load, and comprises voltage and current regulating modules and a detection control module. The voltage and current regulating modules are multiple cascade IGBT (insulated gate bipolar translator) power modules. Each phase consists of n serially connected voltage compensation units. The direct-current side of an H-bridge power unit circuit is connected with energy storage capacitors. All energy storage capacitors which are connected into a voltage regulating module of the same phase of the three-phase system power supply are cascaded through the IGBT power modules to form the split-phase energy storage device of the voltage regulating module of the phase. The electric energy quality control device has the advantages that the power supply quality of sensitive users can be obviously improved, the faults of the power network and sensitive load electric equipment are decreased, the consumption of the power grid is decreased and the utilization ratio of electric energy is improved.
Description
Technical field
The utility model relates to a kind of circuit arrangement that is used for ac mains or ac distribution network, relates in particular to a kind of high-voltage alternating electrical network burning voltage and device that reduces harmonic wave or ripple of being applicable to.
Background technology
Modern industry, commerce and residential electricity consumption equipment in the urban distribution network; Like high-performance office equipment, accurate laboratory apparatus, frequency control equipment, programmable logic controller (PLC), various automatic assembly line and computer system etc. power supply characteristic is changed the sensitiveness load and be ascendant trend year by year, the requirement of the quality of power supply is improved constantly.As far as sensitive users (like semiconductor manufacturing enterprise), the voltage dip of a few tens of milliseconds just possibly cause device damage, production line to stop production, and causes the tremendous economic loss.Meanwhile, the factors such as a large amount of accesses of distributed energy, impact and interference load all make the electrical network quality of power supply have trend, the safe operation of serious threat electric power system and the operate as normal of power consumption equipment that worsens day by day.
To sensitive load quality of power supply control problem, carried out the research manufacturing of quality of power supply control product both at home and abroad.But; Quality of power supply control device does not also form standardized product; And mainly rest on low pressure low capacity scope, Chinese utility model patent " low harmonic wave power quality control system " (utility model patent number: ZL201020133972 publication number: CN201656479) disclose a kind of low harmonic wave power quality control system.Should low harmonic wave power quality control system comprise checkout gear, electric power adjusting device, resistive load device.Checkout gear receives the feedback signal that comes from the resistive load device.The control signal of checkout gear output can use voltage or electric current to be signal.After the electric power adjusting device receives said control signal, with ratio mode outputting drive voltage.Said ratio mode is for exporting the total power driving voltage at continuous output time at interval, and continuously not output time stop to export the total power driving voltage at interval.After the resistive load device received driving voltage, output feedback signal was to checkout gear.Export the total power driving voltage with the ratio mode at interval at continuous output time, and continuously not output time stop to export the total power driving voltage at interval, can effectively reduce the harmonic wave that produces electric power.But this device is only applicable to low power resistive load device, is not suitable for the electrical network quality of power supply control of high-power; Its objective is of the influence of the harmonic wave of minimizing resistive load device generation to power quality, rather than through improving the quality of power supply of power supply grid, for sensitive loads provides higher-quality power supply.
The utility model content
The purpose of the utility model is to provide a kind of phase-splitting energy storage device not have the quality of power supply control device of series transformer; Solution improves the sensitive users power supply quality of power supply, the technical problem of the fault of minimizing electrical network and sensitive loads power consumption equipment, reduction grid loss, raising utilization rate of electrical.
The utility model solves the problems of the technologies described above the technical scheme that is adopted:
A kind of phase-splitting energy storage device does not have the quality of power supply control device of series transformer; Be connected between three-phase system power supply and the sensitive loads; Comprise the electric current and voltage adjustment module and detect control module, the detection input of described detection control module is connected to the three-phase system power supply, the control output end of described detection control module; Be connected to the electric current and voltage adjustment module, it is characterized in that:
Described electric current and voltage adjustment module is a multipleization cascade IGBT power model, and every voltage compensation unit that is connected in series by n is formed, wherein 1≤n≤20;
The main circuit of described voltage compensation unit is the H bridge power unit circuit that IGBT connects to form;
The DC side of H bridge power unit circuit is connected with the phase-splitting energy storage device.
Described electric current and voltage adjustment module comprises the harmonic current compensation unit, and the main circuit of described harmonic current compensation unit is the H bridge power unit circuit that IGBT connects to form; Being connected the same harmonic current compensation unit of going up mutually of three-phase system power supply is connected with the voltage compensation units in series;
The DC side of described H bridge power unit circuit; Be connected with energy storage capacitor; Be connected all energy storage capacitors in the same VRM Voltage Regulator Module of going up mutually of three-phase system power supply, connect, constitute the phase-splitting energy storage device of this phase voltage adjustment module via the IGBT power module cascade connection.
The phase-splitting energy storage device of the utility model does not have a kind of better technical scheme of the quality of power supply control device of series transformer, it is characterized in that described detection control module comprises digital signal processor, signal condition element and current/voltage-converted element; Described digital signal processor is provided with AD converter and PWM output port, and the input end of analog signal of said AD converter is connected to three-phase system power source voltage instrument transformer summation current transformer through signal condition element and current/voltage-converted element; Said PWM output port is connected respectively to the grid of the IGBT of each harmonic current compensation unit, voltage compensation unit, road through the IGBT drive circuit.
The phase-splitting energy storage device of the utility model does not have a kind of improved technical scheme of the quality of power supply control device of series transformer; It is characterized in that described detection control module also comprises NIU, described digital signal processor is connected to the grid monitoring system of three-phase system power supply through NIU.
The beneficial effect of the utility model is:
1. the phase-splitting energy storage device of the utility model does not have the quality of power supply control device of series transformer, can significantly improve the sensitive users power supply quality of power supply, reduces fault, reduction grid loss, the raising utilization rate of electrical of electrical network and sensitive loads power consumption equipment.
2. adopt multipleization cascade IGBT power model; Series connection through power cell; Reduced the requirement of withstand voltage of power device, can adopt technology maturation, cheap low pressure IGBT to form inversion unit, through the number adaptation different output voltage requirement of series unit.
3. because inverter adopts multipleization PWM technology, can obtain desirable phase voltage waveform, can be rated as perfect harmony through stack.Input power factor can reach more than 0.95, and input filter and power factor compensation device needn't be set, and has further reduced system cost.The improvement of waveform can also reduce noise and dv/dt value except that reducing output harmonic wave.
4. because each power cell of electric current and voltage adjustment module has identical structure and parameter; Be convenient to power cell is made modularization; Realize Redundancy Design, even also can be when the individual elements fault through the unit bypass function with this unit short circuit, system still can be normally or derate move.
Description of drawings
Fig. 1 is the main circuit diagram that the phase-splitting energy storage device of the utility model does not have the quality of power supply control device of series transformer;
Fig. 2 is the H bridge element circuit figure of the phase-splitting energy storage device quality of power supply control device that do not have series transformer;
Fig. 3 is the control unit circuit figure that the phase-splitting energy storage device does not have the quality of power supply control device of series transformer.
The label of each parts in more than scheming: 100-three phase mains, multipleization of 200-cascade IGBT power model, 201～20n H bridge power model; 210-harmonic current compensation unit, 300-digital signal processor, 310-AD transducer; The 320-PWM output port, 400-signal condition element, 410-current/voltage-converted element; The 500-NIU, 700-IGBT drive circuit, 900-sensitive loads.
Embodiment
In order to understand the technique scheme of the utility model better, be explained in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the main circuit diagram that the phase-splitting energy storage device of the utility model does not have the quality of power supply control device of series transformer; Comprise electric current and voltage adjustment module 200 and detect the control module (not shown); The quality of power supply control device that described phase-splitting energy storage device does not have series transformer is connected between three-phase system power supply 100 and the sensitive loads 900; The detection input of described detection control module is connected to three-phase system power supply 100; The control output end of described detection control module is connected to electric current and voltage adjustment module 200.Electric current and voltage adjustment module 200 is a multipleization cascade IGBT power model, and every voltage compensation unit 201-20n that is connected in series by n forms wherein 1≤n≤20 (referring to Fig. 2).So-called multipleization cascade is exactly whenever to be made up of several low pressure pwm power units in series, controls the opening and closing of each power cell with high speed digital signal processor, with optocoupler or optical fiber isolation drive.
Fig. 2 is the H bridge element circuit figure of the phase-splitting energy storage device quality of power supply control device that do not have series transformer, has only represented the phase in multipleization of the three-phase cascade IGBT power model among Fig. 2, and the circuit structure of other two phases is identical.Among the figure; The main circuit of voltage compensation unit 201～20n is the H bridge power unit circuit that insulated gate bipolar transistor (IGBT) connects to form; Each power cell 201～20n is made up of IGBT (T1 to T4), forms the PWM voltage source inverter of three-phase input, single-phase output.The output voltage of each power cell 201～20n is 1,0 ,-1 three kind of state level, and every phase n unit stack just can produce the different levels of 2n+1 kind.The electric current and voltage adjustment module comprises harmonic current compensation unit 20h, and the main circuit of harmonic current compensation unit 20h is identical with the voltage compensation unit, and referring to Fig. 2, harmonic current compensation unit 20h also is the H bridge power unit circuit that IGBT connects to form; The DC side of H bridge power unit circuit 201～20n; Be connected with energy storage capacitor C1～Cn; Be connected all the energy storage capacitor C1～Cn in the same VRM Voltage Regulator Module of going up mutually of three-phase system power supply; Connect via the IGBT power module cascade connection, constitute the phase-splitting energy storage device of this phase voltage adjustment module.After being connected the same harmonic current compensation unit of going up mutually of three-phase system power supply and the voltage compensation units in series being connected, through inductance L
fWith capacitor C
fThe LC filter circuit of forming, series connection inserts between three-phase system power supply 100 and the sensitive loads 900.Filter inductance L
f, load-side has metering function when being short-circuited.
It is as shown in Figure 3 that the phase-splitting energy storage device of the utility model does not have the detection control module of quality of power supply control device of series transformer; Comprise digital signal processor 300, signal condition element 400, current/voltage-converted element 410 and NIU 500; Digital signal processor 300 is provided with AD converter 310 and PWM output port 320; The input end of analog signal of AD converter 310; Be connected to three-phase system power source voltage instrument transformer summation current transformer through signal condition element 400 and current/voltage-converted element 410, receive supply voltage and current detection signal; PWM output port 320 is through IGBT drive circuit 700; Be connected respectively to the grid of the IGBT (T1 to T4) of each harmonic current compensation unit, voltage compensation unit, road, send the pwm control signal of digital signal processor 300 generations to each power cell of multipleization cascade; Digital signal processor 300 is connected to the grid monitoring system of three-phase system power supply through NIU 500, realizes remote monitoring and networking control.
In an embodiment of the utility model; Digital signal processor 300 is the TMS320F28335 type digital signal processor of TI company, and this processor has the high speed processing ability of 150MHz, possesses 32 floating point processing units; 6 DMA passages are supported ADC, McBSP and EMIF; Nearly 18 tunnel PWM output is arranged, wherein have 6 the tunnel to be the distinctive more high-precision PWM output of TI (HRPWM), 12 16 passage ADC.IGBT drive circuit 700 can use any existing IGBT drive integrated circult, and typical embodiment is the EXB840 of EXB8 series, EXB841, EXB850; EXB851, the M57957 of M579 series, M57958; M57962, the HL402 of HL series, the GH-039 of GH series etc.In this embodiment; NIU 500 adopts EtherCAT from station control ET1100; EtherCAT is a real-time and opening Ethernet communications protocol; Can satisfy the continuous expansion of electric power system scale, system operation mode becomes increasingly complex, to the increasingly high requirement that requires of automatization level.
28335 produce 8 road PWM ripples, see off through IGBT drive circuit 700.On the integrated circuit board with all input fault signal phases " or " give 6 the tunnel and block PWM input signals (TZ), 28335 can directly block all PWM in case guarantee to break down from hardware.
The channel attached signal condition element 400 of analog acquisition comprises with current/voltage-converted element 410: two-way voltage Hall element (CHV-50P/1200A) input; The input of 2 road current Hall elements; 4 road thermistors sampling input, AD converter adopts 28335 inner 12bitAD.
The digital input signals that 4 road DI input terminals that DIDO connects connect comprises: rectifier bridge left side brachium pontis fault, right brachium pontis fault, inverter bridge left side brachium pontis fault, right brachium pontis fault, drive plate line under-voltage fault; The digital output signal of DO output comprises: 8 road pwm signals, block by-passing signal and drive plate reset signal.
Those of ordinary skill in the art will be appreciated that; Above embodiment only is the technical scheme that is used for explaining the utility model; And be not the qualification that is used as the utility model; Any connotation based on the utility model is to variation, modification that the above embodiment did, all will drop in the protection range of claim of the utility model.
Claims (3)
1. a phase-splitting energy storage device does not have the quality of power supply control device of series transformer; Be connected between three-phase system power supply and the sensitive loads; Comprise the electric current and voltage adjustment module and detect control module, the detection input of described detection control module is connected to the three-phase system power supply, the control output end of described detection control module; Be connected to the electric current and voltage adjustment module, it is characterized in that:
Described electric current and voltage adjustment module is a multipleization cascade IGBT power model, and every voltage compensation unit that is connected in series by n is formed, wherein 1≤n≤20;
The main circuit of described voltage compensation unit is the H bridge power unit circuit that IGBT connects to form;
The DC side of H bridge power unit circuit is connected with the phase-splitting energy storage device.
Described electric current and voltage adjustment module comprises the harmonic current compensation unit, and the main circuit of described harmonic current compensation unit is the H bridge power unit circuit that IGBT connects to form; Being connected the same harmonic current compensation unit of going up mutually of three-phase system power supply is connected with the voltage compensation units in series;
The DC side of described H bridge power unit circuit; Be connected with energy storage capacitor; Be connected all energy storage capacitors in the same VRM Voltage Regulator Module of going up mutually of three-phase system power supply, connect, constitute the phase-splitting energy storage device of this phase voltage adjustment module via the IGBT power module cascade connection.
2. phase-splitting energy storage device according to claim 1 does not have the quality of power supply control device of series transformer, it is characterized in that described detection control module comprises digital signal processor, signal condition element and current/voltage-converted element;
Described digital signal processor is provided with AD converter and PWM output port, and the input end of analog signal of said AD converter is connected to three-phase system power source voltage instrument transformer summation current transformer through signal condition element and current/voltage-converted element; Said PWM output port is connected respectively to the grid of the IGBT of each harmonic current compensation unit, voltage compensation unit, road through the IGBT drive circuit.
3. phase-splitting energy storage device according to claim 2 does not have the quality of power supply control device of series transformer; It is characterized in that described detection control module also comprises NIU, described digital signal processor is connected to the grid monitoring system of three-phase system power supply through NIU.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201390398U CN202550540U (en) | 2012-04-01 | 2012-04-01 | Electric energy quality control device without series transformer of split-phase energy storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201390398U CN202550540U (en) | 2012-04-01 | 2012-04-01 | Electric energy quality control device without series transformer of split-phase energy storage device |
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| CN202550540U true CN202550540U (en) | 2012-11-21 |
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| CN2012201390398U Expired - Lifetime CN202550540U (en) | 2012-04-01 | 2012-04-01 | Electric energy quality control device without series transformer of split-phase energy storage device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580048A (en) * | 2013-10-12 | 2014-02-12 | 上海交通大学 | Chained battery energy storage system integrated with active power filter |
| CN108958098A (en) * | 2018-05-11 | 2018-12-07 | 云南电网有限责任公司昆明供电局 | Take into account the controller of the UPQC device of telecommunication |
| CN110460080A (en) * | 2019-09-10 | 2019-11-15 | 国网四川省电力公司电力科学研究院 | A kind of voltage compensation type battery energy storage converter and its control method |
| CN112072669A (en) * | 2020-09-11 | 2020-12-11 | 西安交通大学 | Variable ratio voltage regulation and current compensation autotransformer and method |
| CN113141019A (en) * | 2021-04-20 | 2021-07-20 | 中国船舶重工集团公司第七一一研究所 | Energy storage circuit based on H-bridge cascade connection and power supply system |
-
2012
- 2012-04-01 CN CN2012201390398U patent/CN202550540U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580048A (en) * | 2013-10-12 | 2014-02-12 | 上海交通大学 | Chained battery energy storage system integrated with active power filter |
| CN108958098A (en) * | 2018-05-11 | 2018-12-07 | 云南电网有限责任公司昆明供电局 | Take into account the controller of the UPQC device of telecommunication |
| CN110460080A (en) * | 2019-09-10 | 2019-11-15 | 国网四川省电力公司电力科学研究院 | A kind of voltage compensation type battery energy storage converter and its control method |
| CN112072669A (en) * | 2020-09-11 | 2020-12-11 | 西安交通大学 | Variable ratio voltage regulation and current compensation autotransformer and method |
| CN112072669B (en) * | 2020-09-11 | 2022-06-07 | 西安交通大学 | Variable ratio voltage regulation and current compensation autotransformer and method |
| CN113141019A (en) * | 2021-04-20 | 2021-07-20 | 中国船舶重工集团公司第七一一研究所 | Energy storage circuit based on H-bridge cascade connection and power supply system |
| CN113141019B (en) * | 2021-04-20 | 2023-04-21 | 中国船舶集团有限公司第七一一研究所 | Energy storage circuit and power supply system based on H bridge cascade connection |
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Granted publication date: 20121121 |
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