CN105226724A - A kind of three-phase converter devices and methods therefor based on virtual output impedance - Google Patents
A kind of three-phase converter devices and methods therefor based on virtual output impedance Download PDFInfo
- Publication number
- CN105226724A CN105226724A CN201510732599.2A CN201510732599A CN105226724A CN 105226724 A CN105226724 A CN 105226724A CN 201510732599 A CN201510732599 A CN 201510732599A CN 105226724 A CN105226724 A CN 105226724A
- Authority
- CN
- China
- Prior art keywords
- module
- virtual
- output
- inverter
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 15
- 238000004364 calculation method Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of three-phase converter devices and methods therefor based on virtual output impedance, it is characterized in that, comprise three-phase inverter main circuit, for grid-connected switch, electrical network module, current measurement module; Also comprise the virtual active power of output to calculate module, export the calculating of virtual reactive power module, modulation signal computing module, modulation module, frequency-active power droop control adjustment module, voltage-reactive power droop control adjustment module, power transfer computing module, inverter output voltage phase place and grid phase adjusted in concert module, export virtual voltage phase calculation module, export virtual voltage amplitude computing module and virtual voltage synthesis module.The beneficial effect that the present invention reaches: the present invention realizes separate unit and multiple stage inverter parallel system operates in grid-connect mode, from net pattern, and can realize, from the seamless handover function of net, grid-connected two kinds of patterns, guaranteeing inverter system safe and reliable operation.
Description
Technical field
The present invention relates to a kind of three-phase converter devices and methods therefor, be specifically related to a kind of three-phase converter devices and methods therefor based on virtual output impedance.
Background technology
Along with becoming increasingly conspicuous of the energy crisis in global range and environmental problem; distributed generation technology and micro-capacitance sensor technology are more and more paid close attention to; as the tie of distributed resource and power distribution network (micro-capacitance sensor); the function of combining inverter is by deep excavation and affirmed its useful effect, but still cannot ignore the challenge that conventional control strategy itself brings to power distribution network and micro-capacitance sensor safe and stable operation.Especially conventional combining inverter fast response time, be difficult to participate in electrical network regulate, cannot support for providing containing the active distribution network of distributed power source necessary voltage and frequency, necessary damping action more cannot be provided for the micro-capacitance sensor that stability is relatively poor, lack a kind of with power distribution network and the mechanism of micro-capacitance sensor effectively " synchronous ".
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of three-phase converter devices and methods therefor based on virtual output impedance, realize separate unit and multiple stage inverter parallel system operates in grid-connect mode, from net pattern, and can realize, from the seamless handover function of net, grid-connected two kinds of patterns, guaranteeing inverter system safe and reliable operation.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Based on a three-phase converter device for virtual output impedance, it is characterized in that, comprise three-phase inverter main circuit, be all arranged on three-phase inverter main circuit for grid-connected switch, electrical network module, current measurement module; Also comprise the virtual active power of output to calculate module, export the calculating of virtual reactive power module, modulation signal computing module, modulation module, frequency-active power droop control adjustment module, voltage-reactive power droop control adjustment module, power transfer computing module, inverter output voltage phase place and grid phase adjusted in concert module, export virtual voltage phase calculation module, export virtual voltage amplitude computing module and virtual voltage synthesis module;
Described current measurement module and the output of virtual voltage synthesis module are all connected the virtual active power of output and calculate module, export virtual reactive power calculating module and modulation signal computing module;
The output of described modulation signal computing module is connected with modulation module;
The virtual active power of described output calculates module is connected a power transfer computing module input with the output of frequency-active power droop control adjustment module;
The virtual reactive power of described output calculates module and is connected another input of power transfer computing module with the output of voltage-reactive power droop control adjustment module;
An output of described power transfer computing module and inverter output voltage phase place are connected with the output of grid phase adjusted in concert module and export virtual voltage phase calculation module;
Another output of described power transfer computing module connects output virtual voltage amplitude computing module;
Described output virtual voltage phase calculation module is connected virtual voltage synthesis module with the output exporting virtual voltage amplitude computing module;
Described modulation signal computing module is for generation of inverter modulation signal;
Described modulation module is for generation of driving power switch controlling signal, and the output of modulation module is connected with three-phase inverter main circuit.
Based on a control method for the aforementioned three-phase converter device based on virtual output impedance, it is characterized in that, comprise the steps:
1) the three-phase inverter output inductor current i will obtained by sampling
labcwith the inverter virtual output voltage v that virtual voltage synthesis module produces
rabcsend into export virtual active power calculating module and export virtual reactive power and calculate module, calculate the virtual active power of output p of the corresponding inverter of acquisition
owith reactive power q
o;
2) inverter active power command value P is obtained respectively by frequency-active power droop control adjustment module and voltage-reactive power droop control adjustment module
refwith reactive power command value Q
ref, by virtual for inverter active power of output p
owith reactive power q
orespectively with corresponding active power command value P
refwith reactive power command value Q
refcompare, and the value is relatively sent into power transfer computing module;
3) inverter output voltage phase place and grid phase adjusted in concert module output signal Δ P and the active power of power transfer computing module are outputed signal P ' to be added to send into and to export virtual voltage phase calculation module, calculate the phase theta obtaining inverter virtual output voltage, the reactive power of power transfer computing module output signal Q ' feeding is exported virtual voltage amplitude computing module, obtains the amplitude V of inverter virtual output voltage;
4) phase theta of virtual output voltage and amplitude V are sent into virtual voltage synthesis module and generate inverter virtual output voltage v
rabc, by inverter inductance current i
labcwith inverter virtual output voltage v
rabcsend into modulation signal computing module, obtain inverter modulation signal v
m;
5) by modulation signal v
mwith carrier signal v
ctogether send into modulation module, modulation module produces the control signal D of control inverter power switch.
The beneficial effect that the present invention reaches: the present invention realizes separate unit and multiple stage inverter parallel system operates in grid-connect mode, from net pattern, and can realize, from the seamless handover function of net, grid-connected two kinds of patterns, guaranteeing inverter system safe and reliable operation.
Accompanying drawing explanation
Fig. 1 is overall structure control block diagram of the present invention;
To be the present invention operate in grid-connect mode, from net pattern, the simulation result schematic diagram switched from net to grid-connect mode under three kinds of operating modes for single inverter to Fig. 2;
To be the present invention operate in grid-connect mode, from net pattern, the simulation result schematic diagram switched from net to grid-connect mode under three kinds of operating modes for two inverter parallel systems to Fig. 3.
The implication of Reference numeral in figure:
1-three-phase inverter main circuit, 2-is used for grid-connected switch S and electrical network module, 3-exports virtual active power and calculates module, 4-exports virtual reactive power and calculates module, 5-frequency-active power droop control adjustment module, 6-voltage-reactive power droop control adjustment module, 7-power transfer computing module, 8-inverter output voltage phase place and grid phase adjusted in concert module, 9-exports virtual voltage phase calculation module, and 10-exports virtual voltage amplitude computing module, 11-virtual voltage synthesis module, 12-modulation signal computing module, 13-modulation module.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The annexation of this device as shown in Figure 1.
During use, comprise the steps:
1) the three-phase inverter output inductor current i will obtained by sampling
labcwith the inverter virtual output voltage v that virtual voltage synthesis module 11 produces
rabcsend into export virtual active power calculating module 3 and export virtual reactive power and calculate module 4, calculate the virtual active power of output p of the corresponding inverter of acquisition
owith reactive power q
o.
Exporting virtual active power calculating module 3 computing formula is p
o=v
rai
la+ v
rbi
lb+ v
rci
lc(1), v in formula
ra, v
rb, v
rcrepresent inverter three-phase virtual output voltage respectively; i
la, i
lb, i
lcrepresent inverter three-phase output inductor electric current respectively.
Exporting virtual reactive power calculating module 4 computing formula is q
o=v
ra(-j) i
la+ v
rb(-j) i
lb+ v
rc(-j) i
lc(2), v in formula
ra, v
rb, v
rcrepresent inverter three-phase virtual output voltage respectively; i
la, i
lb, i
lcrepresent inverter three-phase output inductor electric current respectively.
2) inverter active power command value P is obtained respectively by frequency-active power droop control adjustment module 5 and voltage-reactive power droop control adjustment module 6
refwith reactive power command value Q
ref, by virtual for inverter active power of output p
owith reactive power q
orespectively with corresponding active power command value P
refwith reactive power command value Q
refcompare, and the value is relatively sent into power transfer computing module 7.
Frequency-active power droop control adjustment module 5 computing formula is P
ref=(f
*-f) k
f(3), in formula, f
*for peak frequency corresponding in inverter frequency-meritorious sagging curve, f is that inverter exports actual frequency, k
ffor frequency-meritorious sagging coefficient.
Voltage-reactive power droop control adjustment module 6 computing formula is Q
ref=(V
*-V) k
v(4), V in formula
*for maximum voltage corresponding in contravarianter voltage-idle sagging curve, V is that inverter exports virtual voltage, k
vfor voltage-idle sagging coefficient.
3) inverter output voltage phase place and grid phase adjusted in concert module 8 are outputed signal Δ P and the active power of power transfer computing module 7 to output signal P ' and be added to send into and export virtual voltage phase calculation module 9, calculate the phase theta obtaining inverter virtual output voltage, the reactive power of power transfer computing module 7 output signal Q ' feeding is exported virtual voltage amplitude computing module 10, obtains the amplitude V of inverter virtual output voltage.
Power transfer computing module 7 computing formula is:
Z=R+jX in formula, wherein R is the virtual output impedance of inverter, and X=ω L is inverter filtering inductance induction reactance.
Inverter output voltage phase place and grid phase adjusted in concert module 8 computing formula are:
e in formula
gand v
obe respectively line voltage and inverter actual output voltage,
for phase place regulation coefficient, ω
cfor low pass filter corner frequency.
4) phase theta of virtual output voltage and amplitude V are sent into virtual voltage synthesis module 11 and generate inverter virtual output voltage v
rabc, by inverter inductance current i
labcwith inverter virtual output voltage v
rabcsend into modulation signal computing module 12, obtain inverter modulation signal v
m.
Exporting virtual voltage phase calculation module 9 computing formula is
P in formula
*=P '+Δ P, k
ω, k
pbe respectively angular frequency adjustment factor and meritorious adjustment factor, ω
0for electrical network angular frequency.
Exporting virtual voltage amplitude computing module 10 computing formula is
k in formula
qfor Reactive-power control coefficient.
Virtual voltage synthesis module 11 computing formula is
Modulation signal computing module 12 computing formula is v
m=v
rabc-i
labcr (10), in formula, R is load resistance.
5) by modulation signal v
mwith carrier signal v
ctogether send into modulation module, modulation module produces the control signal D of control inverter power switch.
For correctness of the present invention and feasibility are described, carried out Simulation experiments validate to the proposed three-phase converter method based on virtual output impedance, wherein emulation is divided into single inverter to run and four inverter parallels, two kinds of situations.Simulation parameter is: line voltage phase voltage amplitude 257V, input direct voltage 800V, output inductor 0.15mH, filter capacitor 600uF, and rated output power is respectively 100kW and 50kW, and load resistance R is 0.2 Ω.
(1) when single inverter runs:
Fig. 2 is inverter when switching mutually from net pattern with grid-connect mode, power network current i
gawith inverter output current i
oathe simulation waveform of waveform, is wherein switched to grid-connect mode at t=0.8s moment inverter by from net pattern, is switched back from net pattern at t=1.2s moment inverter by grid-connect mode again.
The simulation waveform display that Fig. 2 provides, based under control method of the present invention, single inverter is fine must be achieved at grid-connect mode, from the stable operation under net pattern, is achieving seamless switching between net pattern and grid-connect mode simultaneously, switches and instantaneously current over pulse phenomenon does not occur.
During (2) two inverter parallels:
Fig. 3 be two inverter parallels when switching mutually from net pattern with grid-connect mode, power network current i
gawith two inverter output current i
oa1, i
oa2simulation waveform, be wherein switched to grid-connect mode at t=0.8s moment inverter parallel system by from net pattern, switched back from net pattern by grid-connect mode again at t=1.2s moment inverter parallel system.
The simulation waveform display that Fig. 3 provides, based under control method of the present invention, must achieve at grid-connect mode, from the stable operation under net pattern very well equally during two inverter parallels, all achieve seamless switching between net pattern and grid-connect mode simultaneously.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (2)
1., based on a three-phase converter device for virtual output impedance, it is characterized in that, comprise three-phase inverter main circuit, be all arranged on three-phase inverter main circuit for grid-connected switch, electrical network module, current measurement module; Also comprise the virtual active power of output to calculate module, export the calculating of virtual reactive power module, modulation signal computing module, modulation module, frequency-active power droop control adjustment module, voltage-reactive power droop control adjustment module, power transfer computing module, inverter output voltage phase place and grid phase adjusted in concert module, export virtual voltage phase calculation module, export virtual voltage amplitude computing module and virtual voltage synthesis module;
Described current measurement module and the output of virtual voltage synthesis module are all connected the virtual active power of output and calculate module, export virtual reactive power calculating module and modulation signal computing module;
The output of described modulation signal computing module is connected with modulation module;
The virtual active power of described output calculates module is connected a power transfer computing module input with the output of frequency-active power droop control adjustment module;
The virtual reactive power of described output calculates module and is connected another input of power transfer computing module with the output of voltage-reactive power droop control adjustment module;
An output of described power transfer computing module and inverter output voltage phase place are connected with the output of grid phase adjusted in concert module and export virtual voltage phase calculation module;
Another output of described power transfer computing module connects output virtual voltage amplitude computing module;
Described output virtual voltage phase calculation module is connected virtual voltage synthesis module with the output exporting virtual voltage amplitude computing module;
Described modulation signal computing module is for generation of inverter modulation signal;
Described modulation module is for generation of driving power switch controlling signal, and the output of modulation module is connected with three-phase inverter main circuit.
2., based on a control method for the three-phase converter device based on virtual output impedance according to claim 1, it is characterized in that, comprise the steps:
1) the three-phase inverter output inductor current i will obtained by sampling
labcwith the inverter virtual output voltage v that virtual voltage synthesis module produces
rabcsend into export virtual active power calculating module and export virtual reactive power and calculate module, calculate the virtual active power of output p of the corresponding inverter of acquisition
owith reactive power q
o;
2) inverter active power command value P is obtained respectively by frequency-active power droop control adjustment module and voltage-reactive power droop control adjustment module
refwith reactive power command value Q
ref, by virtual for inverter active power of output p
owith reactive power q
orespectively with corresponding active power command value P
refwith reactive power command value Q
refcompare, and the value is relatively sent into power transfer computing module;
3) inverter output voltage phase place and grid phase adjusted in concert module output signal Δ P and the active power of power transfer computing module are outputed signal P ' to be added to send into and to export virtual voltage phase calculation module, calculate the phase theta obtaining inverter virtual output voltage, the reactive power of power transfer computing module output signal Q ' feeding is exported virtual voltage amplitude computing module, obtains the amplitude V of inverter virtual output voltage;
4) phase theta of virtual output voltage and amplitude V are sent into virtual voltage synthesis module and generate inverter virtual output voltage v
rabc, by inverter inductance current i
labcwith inverter virtual output voltage v
rabcsend into modulation signal computing module, obtain inverter modulation signal v
m;
5) by modulation signal v
mwith carrier signal v
ctogether send into modulation module, modulation module produces the control signal D of control inverter power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510732599.2A CN105226724B (en) | 2015-10-30 | 2015-10-30 | A kind of three-phase converter devices and methods therefor based on virtual output impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510732599.2A CN105226724B (en) | 2015-10-30 | 2015-10-30 | A kind of three-phase converter devices and methods therefor based on virtual output impedance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105226724A true CN105226724A (en) | 2016-01-06 |
| CN105226724B CN105226724B (en) | 2017-11-03 |
Family
ID=54995514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510732599.2A Active CN105226724B (en) | 2015-10-30 | 2015-10-30 | A kind of three-phase converter devices and methods therefor based on virtual output impedance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105226724B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655275A (en) * | 2017-03-03 | 2017-05-10 | 南京南瑞太阳能科技有限公司 | Inverter control device and method based on network voltage phase locking and virtual synchronous machine |
| CN110148966A (en) * | 2019-05-28 | 2019-08-20 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Based on twin inverter in parallel and off-network control method and device |
| CN111509788A (en) * | 2020-04-26 | 2020-08-07 | 太原理工大学 | Improved alternating current-direct current hybrid micro-grid with variable topology and control method thereof |
| CN112104252A (en) * | 2020-09-08 | 2020-12-18 | 中车青岛四方车辆研究所有限公司 | Method and device for calculating power of auxiliary converter of motor train unit |
| WO2023178873A1 (en) * | 2022-03-22 | 2023-09-28 | 西安热工研究院有限公司 | Grid-connected point voltage regulation method and system for thermal power molten salt energy storage converter device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928946A (en) * | 2014-05-07 | 2014-07-16 | 湖南大学 | Smooth switching control method for three-phase dual-mode inverter |
| EP2822139A1 (en) * | 2012-03-02 | 2015-01-07 | Kyocera Corporation | Power control system, power control device, and power control method |
-
2015
- 2015-10-30 CN CN201510732599.2A patent/CN105226724B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2822139A1 (en) * | 2012-03-02 | 2015-01-07 | Kyocera Corporation | Power control system, power control device, and power control method |
| CN103928946A (en) * | 2014-05-07 | 2014-07-16 | 湖南大学 | Smooth switching control method for three-phase dual-mode inverter |
Non-Patent Citations (1)
| Title |
|---|
| 彭春华等: "低压微电网三相逆变器功率耦合下垂控制策略", 《电力自动化设备》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655275A (en) * | 2017-03-03 | 2017-05-10 | 南京南瑞太阳能科技有限公司 | Inverter control device and method based on network voltage phase locking and virtual synchronous machine |
| CN106655275B (en) * | 2017-03-03 | 2019-10-01 | 南京南瑞太阳能科技有限公司 | Control device for inverter and method based on network voltage locking phase and virtual synchronous machine |
| CN110148966A (en) * | 2019-05-28 | 2019-08-20 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Based on twin inverter in parallel and off-network control method and device |
| CN110148966B (en) * | 2019-05-28 | 2023-04-28 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Parallel double-inverter-based parallel/off-grid control method and device |
| CN111509788A (en) * | 2020-04-26 | 2020-08-07 | 太原理工大学 | Improved alternating current-direct current hybrid micro-grid with variable topology and control method thereof |
| CN111509788B (en) * | 2020-04-26 | 2022-08-09 | 太原理工大学 | Improved alternating current-direct current hybrid micro-grid with variable topology and control method thereof |
| CN112104252A (en) * | 2020-09-08 | 2020-12-18 | 中车青岛四方车辆研究所有限公司 | Method and device for calculating power of auxiliary converter of motor train unit |
| WO2023178873A1 (en) * | 2022-03-22 | 2023-09-28 | 西安热工研究院有限公司 | Grid-connected point voltage regulation method and system for thermal power molten salt energy storage converter device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105226724B (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104578168B (en) | Different capabilities micro-source microgrid inverter operational mode takes over seamlessly control method | |
| CN103683331B (en) | Single-phase inverter control system | |
| CN103326611B (en) | A kind of prediction direct Power Control method of three-phase voltage source type PWM converter | |
| CN105226724A (en) | A kind of three-phase converter devices and methods therefor based on virtual output impedance | |
| CN104578173A (en) | Inverter grid-connected control method based on virtual synchronous generator technology | |
| CN103647461B (en) | A kind of control method of AC-DC series resonance matrix converter and device | |
| CN102035216B (en) | Grid-connected control method and device for combining generator and matrix converter | |
| CN103401459B (en) | Triangularly connected chain H bridge suspended type inverter interphase DC side voltage balancing control method | |
| CN103928946A (en) | Smooth switching control method for three-phase dual-mode inverter | |
| CN105811793B (en) | Modularization multi-level converter method for equalizing voltage based on self-energizing power supply frequency hopping control | |
| CN103227580B (en) | Control method of three-level frequency converter | |
| CN103545825A (en) | Electromagnetic mixed compensation system for quality of electric energy in electrified railways | |
| CN103311935B (en) | Comprehensive compensation instruction current obtaining method of angle-shaped chain-type SVG (static var generator) of power distribution network | |
| CN102647135B (en) | Method for applying matrix converter to excitation at starting period of three-level synchronous motor | |
| CN103618310A (en) | High-capacity UPQC and control method thereof | |
| CN106130062A (en) | A kind of two-stage type grid-connected photovoltaic system and intermediate dc side voltage stabilizing method | |
| CN103107548A (en) | Power conversion system (PCS) active power and reactive power control system and control method | |
| CN104917190A (en) | Decentralized control method for H-bridge cascaded power grid static reactive power compensator | |
| CN109494799A (en) | Based on the magneto alternator direct grid-connected system and its control method for opening winding construction | |
| CN103366053B (en) | A kind of improvement of Voltage-oriented control strategy and Mathematical Modeling Methods | |
| CN103474994B (en) | Multiterminal Unified Power Quality Controller DC voltage control device and method | |
| CN105098768B (en) | Microgrid current transformer seamless switching control strategy based on capacitance current | |
| Yibre et al. | Supercapacitors for wind power application | |
| CN103956738B (en) | A kind of battery energy storage system control method having APF and SVG function concurrently | |
| CN106816889A (en) | Combining inverter power decoupled method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Yuping Inventor after: Wang Wei Inventor after: Zhong Xu Inventor after: Wei Hui Inventor after: Wang Tong Inventor after: Song Fei Inventor before: Zhong Xu Inventor before: Wei Cheng Inventor before: Wang Tong Inventor before: Song Fei |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160617 Address after: 210032 weft two road, hi tech Development Zone, Jiangsu, Nanjing Applicant after: State Grid Corporation of China Applicant after: Nanjing Nanrui Solar Energy Technology Co., Ltd. Applicant after: State Grid Tianjin Electric Power Company Applicant after: NARI Technology Development Co., Ltd. Address before: Two high tech Development Zone, Jiangsu, Nanjing, weft Road, 210061 Applicant before: Nanjing Nanrui Solar Energy Technology Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160926 Address after: 210032 weft two road, hi tech Development Zone, Jiangsu, Nanjing Applicant after: State Grid Corporation of China Applicant after: State Grid Tianjin Electric Power Company Applicant after: Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd. Applicant after: Nanjing Nanrui Solar Energy Technology Co., Ltd. Applicant after: Nanjing Nari Co., Ltd. Applicant after: NARI Technology Development Co., Ltd. Address before: 210032 weft two road, hi tech Development Zone, Jiangsu, Nanjing Applicant before: State Grid Corporation of China Applicant before: Nanjing Nanrui Solar Energy Technology Co., Ltd. Applicant before: State Grid Tianjin Electric Power Company Applicant before: NARI Technology Development Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |