CN105186543B - A kind of parameter tuning device and method of subsynchronous oscillation damping controller - Google Patents
A kind of parameter tuning device and method of subsynchronous oscillation damping controller Download PDFInfo
- Publication number
- CN105186543B CN105186543B CN201510541996.1A CN201510541996A CN105186543B CN 105186543 B CN105186543 B CN 105186543B CN 201510541996 A CN201510541996 A CN 201510541996A CN 105186543 B CN105186543 B CN 105186543B
- Authority
- CN
- China
- Prior art keywords
- modal filter
- mode signals
- sub
- damping controller
- modal
- 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.)
- Active
Links
Abstract
The present invention relates to the parameter tuning technical fields of subsynchronous oscillation damping controller, disclose a kind of parameter tuning device and method of subsynchronous oscillation damping controller, wherein the subsynchronous oscillation damping controller includes：Modal filter is filtered rotary speed of generator group signal for basis, to obtain corresponding mode signals；Control device is connect with the modal filter, for realizing the inhibition to sub-synchronous oscillation according to the mode signals；The equipment includes：Compensation device is connected to and is connected between the modal filter and the control device, for being adjusted to the mode signals being obtained by filtration.The present invention with the modal filter series compensation device in sub-synchronous oscillation controller come the mode signals exported to modal filter by adjusting; improve the accuracy of the parameter in sub-synchronous oscillation controller; subsynchronous oscillation damping controller is set preferably to inhibit sub-synchronous oscillation, so as to preferably protect generating set.
Description
Technical field
The present invention relates to the parameter tuning technologies of subsynchronous oscillation damping controller, and in particular, to one kind is subsynchronous to shake
Swing the parameter tuning device and method of damping controller.
Background technology
With the sustained and rapid development of Chinese national economy and the rapid growth of power load so that domestic large size Hydro-Thermal Systems
Base is developed successively, to which extensive, long distance power transmission becomes the Main Trends of The Development of China's power grid.In order to reduce the construction of line
With the occupancy in transmission of electricity corridor, series capacitor compensation technology is all made of in network system.
But series capacitor compensation may cause the subsynchronous resonance of electric system, in turn result in Turbo-generator Set
Shafting damage.Sub-synchronous oscillation can cause the shafting caused by distorting stress to damage, and shafting damage may be by prolonged low
Caused by the accumulation of amplitude torsional oscillation, it is also possible to caused by the amplitude torsional oscillation of short time.Shafting is damaged in order to prevent, is mostly used greatly secondary same
Oscillation damping controller is walked to inhibit sub-synchronous oscillation, therefore, the parameter for rationally adjusting subsynchronous oscillation damping controller has
Great engineering practical value.However, since the accuracy of the parameter of subsynchronous oscillation damping controller is not high, so causing to press down
Sub-synchronous oscillation processed it is ineffective.
Invention content
The object of the present invention is to provide a kind of parameter tuning device and method of subsynchronous oscillation damping controller, for solving
The certainly not high problem of the parameter accuracy of subsynchronous oscillation damping controller.
To achieve the goals above, the present invention provides a kind of parameter tuning equipment of subsynchronous oscillation damping controller,
Wherein, the subsynchronous oscillation damping controller includes：Modal filter, for being filtered to rotary speed of generator group signal,
To obtain corresponding mode signals；Control device is connect with the modal filter, for being realized according to the mode signals
Inhibition to sub-synchronous oscillation；The equipment includes：Compensation device, be connected to the modal filter and the control device it
Between, for being adjusted to the mode signals being obtained by filtration.
Correspondingly, the present invention also provides a kind of parameter tuning methods of subsynchronous oscillation damping controller, wherein described
Subsynchronous oscillation damping controller includes：Modal filter is corresponding to obtain for being filtered to rotary speed of generator group signal
Mode signals；Control device is connect with the modal filter, for being shaken to subsynchronous according to the mode signals to realize
The inhibition swung；This method includes：The mode signals being obtained by filtration are adjusted.
Through the above technical solutions, the present invention with the modal filter series compensation in sub-synchronous oscillation controller by filling
It sets the mode signals to export modal filter to adjust, improves the accurate of the parameter in sub-synchronous oscillation controller
Degree, enables subsynchronous oscillation damping controller preferably to inhibit sub-synchronous oscillation, so as to preferably protect generating set.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the block diagram of the parameter tuning equipment of subsynchronous oscillation damping controller provided by the invention；
Fig. 2 is that there are two the parameters in the case of modal filter for subsynchronous oscillation damping controller tool provided by the invention
Adjust the structure chart of equipment；And
Fig. 3 is the Bode figures of the mode signals of the output of modal filter provided by the invention.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the block diagram of the parameter tuning equipment of subsynchronous oscillation damping controller provided by the invention, wherein in Fig. 1
Shown in modal filter and control device be device possessed by subsynchronous oscillation damping controller, which is used for
Rotary speed of generator group signal is filtered, to obtain corresponding mode signals, control device is connect with modal filter, is used for
The inhibition to sub-synchronous oscillation is realized according to mode signals.Wherein, rotary speed of generator group signal is turned about generating set
The signal of fast variable quantity, mode signals are the letter for the rotation speed change amount about generating set for causing generator sub-synchronous oscillation
Number.
It will be appreciated by those skilled in the art that control device as described herein is showing for subsynchronous oscillation damping controller
The general overview for having the equipment that in structure mode signals are carried out with subsequent operation, in fact, obtaining mould by modal filter
After state signal, need to carry out proportional gain, phase compensation, the sequence of operations such as dq decoupling controls, and skill provided by the invention
The mode signals that art scheme is exported primarily directed to modal filter are adjusted, that is, in subsynchronous oscillation damping controller
One is increased between modal filter and the equipment being connect with modal filter in original connection structure for adjusting
Equipment, and any change is not carried out to the other equipment of subsynchronous oscillation damping controller and structure, so, this specification will
Omission pair and description of the equipment without the equipment and structure that directly contact for adjusting.
As shown in Figure 1, the parameter tuning equipment of subsynchronous oscillation damping controller provided by the invention includes compensation device,
The compensation device is connected between modal filter and control device, for being adjusted to the mode signals that boiler obtains.It mends
It is the equipment for adjusting being mentioned above to repay device.
Certainly, subsynchronous oscillation damping controller may include multiple modal filters, to be respectively used to extract difference
Mode signals, in the case where subsynchronous oscillation damping controller includes multiple modal filters, multiple modal filter
It is connected in parallel, correspondingly, compensation device should also be as that there are multiple compensators (wherein, to have in subsynchronous oscillation damping controller
In the case of one modal filter, compensation device then has there are one compensator), and a compensator is correspondingly connected with a mould
State filter a, that is to say, that compensator is connected in series in the branch where each modal filter, with respectively to more
The mode signals that a modal filter is obtained by filtration are adjusted.
Fig. 2 is that there are two the parameters in the case of modal filter for subsynchronous oscillation damping controller tool provided by the invention
The structure chart of equipment is adjusted, as shown in Fig. 2, modal filter 1 is connected in series with compensator 1, modal filter 2 and compensator 2
It is connected in series with.The mode signals that compensator 1 is used to export modal filter 1 are adjusted, and compensator 2 is used to filter mode
The mode signals that device 2 exports are adjusted.Modal filter 1 connects to form circuit 1 with compensator 1, modal filter 2 and compensation
The series connection of device 2 forms circuit 2, wherein circuit 1 is connected in parallel with circuit 2.
Modal filter can by a low-pass filter, a high-pass filter, a second-order bandpass filter device and
One bandstop filter composition, modal filter can extract mode of interest from rotary speed of generator group variable quantity signal
Signal, for example, 18.7Hz and 23.6Hz.
Wherein, adjusted to the mode signals being obtained by filtration by modal filter can be by with lower section for compensation device
Formula carries out：The mode signals being obtained by filtration are adjusted by transmission function.Wherein, transmission function is：
Wherein,
ωxFor known sub-synchronous oscillation frequency, x is and ωxThe corresponding phase to be compensated, KpFor with ωxIt is corresponding
The gain of compensation device, s are the complex frequency of modal filter.
It should be understood that in the case where subsynchronous oscillation damping controller has multiple modal filters, for example, tool
There are two modal filters, i.e. modal filter 1 and modal filter 2, and accordingly, and compensation device has compensator 1 and mends
Device 2 is repaid, then：For the transmission function in compensator 1, ωxFor the known sub-synchronous oscillation frequency for modal filter 1
Rate, x are and ωxThe corresponding phase to be compensated, KpFor with ωxThe gain of corresponding compensator 1, s are modal filter 1
Complex frequency；For the transmission function in compensator 2, ωxFor the known sub-synchronous oscillation frequency for modal filter 2, x is
With ωxThe corresponding phase to be compensated, KpFor with ωxThe gain of corresponding compensator 2, s are the complex frequency of modal filter 2.
The parameter tuning equipment of subsynchronous oscillation damping controller provided by the invention (can not also be shown including processing unit
Go out), which connect with modal filter and compensation device, the frequency of the mode signals for acquiring modal filter output
Rate, amplitude and phase, and the gain of the phase to be compensated and compensation device is obtained in conjunction with known sub-synchronous oscillation frequency,
In, gain is the inverse of the amplitude corresponding to sub-synchronous oscillation frequency.The mode of the modal filter output of processing unit acquisition
Frequency, amplitude and the phase of signal can form curve graph shown in Fig. 3.
The x needed for calculation of transfer function and K how are obtained with reference to Fig. 3 introductionsp, Fig. 3 is mode provided by the invention
The Bode of the mode signals of the output of filter schemes, and as shown in Figure 3, the abscissa of left figure is frequency, and ordinate is amplitude, right
The abscissa of figure is frequency, and ordinate is phase.Ideally, compensator the mode signals that modal filter is exported into
After row is adjusted, it is 1 to cause the amplitude corresponding to a sub-synchronous oscillation frequency of the sub-synchronous oscillation of generator, corresponding phase
It is 0.For example, it is assumed that sub-synchronous oscillation frequency is 18.7Hz, i.e., horizontal seat in curve graph shown in Fig. 3 (including left figure and right figure)
Be designated as 18.7, then ideally, sub-synchronous oscillation frequency 18.7Hz on the curve in left figure corresponding ordinate answer
It is 1, corresponding ordinate should be 0 on the curve in right figure, still, and as seen in Figure 3, the sub-synchronous oscillation frequency
18.7Hz on the curve in left figure corresponding ordinate be not 1, corresponding ordinate is not yet on the curve in right figure
It is 0.Thus, it is possible to according to the output of collected modal filter mode signals in width corresponding to sub-synchronous oscillation frequency
(gain is the inverse of amplitude, so obtaining amplitude just the gain that obtains the phase to be compensated and compensation device for value and phase
It is equivalent to have obtained gain).For example, the sub-synchronous oscillation frequency 18.7Hz corresponding vertical seats on the curve in the left figure of Fig. 3
1.2 are designated as, then the amplitude to be compensated just is 0.833 (i.e. 1.2 inverses), so as to obtain gain；This is subsynchronous to shake
Swing frequency 18.7Hz on the curve in right figure corresponding ordinate be -10 degree, then the phase to be compensated just be 10 degree.
It will be appreciated by those skilled in the art that if it is desired to obtaining more accurate x and Kp, can be by handling above
Device obtains x and KpOn the basis of, it is adjusted in conjunction with test result.
The present invention also provides the parameter tuning methods of subsynchronous oscillation damping controller, wherein subsynchronous oscillation damping
Controller includes：Modal filter, for being filtered to rotary speed of generator group signal, to obtain corresponding mode signals；Control
Control equipment is connect with modal filter, for realizing the inhibition to sub-synchronous oscillation according to mode signals；This method includes：
The mode signals being obtained by filtration are adjusted.
It should be noted that the detail of the parameter tuning method of subsynchronous oscillation damping controller provided by the invention
And benefit is similar with the parameter tuning equipment of subsynchronous oscillation damping controller provided by the invention, in this, it will not go into details.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (4)
1. a kind of parameter tuning equipment of subsynchronous oscillation damping controller, the wherein subsynchronous oscillation damping controller include：
Modal filter is used for for being filtered rotary speed of generator group signal to obtain corresponding mode signals and control device
Inhibit sub-synchronous oscillation, which is characterized in that the parameter tuning equipment of the subsynchronous oscillation damping controller includes：
Compensation device is connected between the modal filter and the control device, for passing through transmission function to the mistake
It filters obtained mode signals to be adjusted, the transmission function is：
Wherein,
ωxFor known sub-synchronous oscillation frequency, x is and ωxThe corresponding phase to be compensated, KpFor with ωxIt is corresponding described
The gain of compensation device, s are the complex frequency of the modal filter；And
Processing unit is connect with the modal filter and the compensation device, for acquiring the modal filter output
Frequency, amplitude and the phase of mode signals, and obtain the phase to be compensated in conjunction with the known sub-synchronous oscillation frequency
The gain of position and the compensation device, wherein the gain is the inverse of the amplitude corresponding to the sub-synchronous oscillation frequency；
The wherein described control device, connect with the compensation device, and for being realized according to through the mode signals adjusted
Inhibition to sub-synchronous oscillation.
2. equipment according to claim 1, which is characterized in that
The subsynchronous oscillation damping controller includes the multiple modal filters being connected in parallel；And
The compensation device includes multiple compensators, is connected in series in the branch where each modal filter described in one
Compensator carries out the mode signals that each modal filter in the multiple modal filter is obtained by filtration with respectively whole
It is fixed.
3. a kind of parameter tuning method of subsynchronous oscillation damping controller, wherein the subsynchronous oscillation damping controller packet
It includes：Modal filter, for being filtered to rotary speed of generator group signal, to obtain corresponding mode signals and control device
For inhibiting sub-synchronous oscillation, which is characterized in that this method includes：
The mode signals being obtained by filtration are adjusted by transmission function, the transmission function is：
Wherein,
ωxFor known sub-synchronous oscillation frequency, x is and ωxThe corresponding phase to be compensated, KpFor with ωxIt is corresponding described
The gain of compensation device, s are the complex frequency of the modal filter；And
Acquire frequency, amplitude and the phase of the mode signals of the modal filter output；
The gain of the phase to be compensated and the compensation device is obtained in conjunction with the known sub-synchronous oscillation frequency,
Described in gain be the sub-synchronous oscillation frequency corresponding to amplitude inverse；
Wherein, the control device is used to realize the inhibition to sub-synchronous oscillation according to through the mode signals adjusted.
4. according to the method described in claim 3, it is characterized in that, this method further includes：
It is right respectively in the case where the subsynchronous oscillation damping controller includes the multiple modal filters being connected in parallel
The mode signals that each modal filter in the multiple modal filter is obtained by filtration are adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541996.1A CN105186543B (en) | 2015-08-28 | 2015-08-28 | A kind of parameter tuning device and method of subsynchronous oscillation damping controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541996.1A CN105186543B (en) | 2015-08-28 | 2015-08-28 | A kind of parameter tuning device and method of subsynchronous oscillation damping controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105186543A CN105186543A (en) | 2015-12-23 |
| CN105186543B true CN105186543B (en) | 2018-10-30 |
Family
ID=54908465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510541996.1A Active CN105186543B (en) | 2015-08-28 | 2015-08-28 | A kind of parameter tuning device and method of subsynchronous oscillation damping controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186543B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546664B (en) * | 2017-09-21 | 2022-05-24 | 通用电气公司 | Power generation system, system for suppressing subsynchronous oscillations, and method for controlling operation of power system |
| CN110120665B (en) * | 2019-05-05 | 2023-06-02 | 三峡大学 | Method for improving BBO algorithm to optimally design SSSC damping controller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403943A (en) * | 2011-11-30 | 2012-04-04 | 中国电力科学研究院 | Method for inhibiting subsynchronous oscillation of turbo generator set by additional coaxial double-feed motor |
| CN102769296A (en) * | 2012-07-04 | 2012-11-07 | 华北电力大学 | Supplementary subsynchronous damping control method of speed regulator |
| CN103795070A (en) * | 2014-01-16 | 2014-05-14 | 四川大学 | Multichannel direct current added damping control device capable of simultaneously restraining sub-synchronization and low frequency oscillation, and parameter setting method of multichannel direct current added damping control device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834446B (en) * | 2010-03-23 | 2012-06-27 | 浙江大学 | Sub-synchronous oscillation suppression method based on controlled series compensation |
| CN101834447B (en) * | 2010-03-23 | 2012-06-27 | 浙江大学 | Method for suppressing sub-synchronous oscillation based on thyristor controlled reactor |
| US9455633B2 (en) * | 2012-01-05 | 2016-09-27 | Ingeteam Power Technology, S.A. | Method and apparatus for controlling a frequency converter |
-
2015
- 2015-08-28 CN CN201510541996.1A patent/CN105186543B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403943A (en) * | 2011-11-30 | 2012-04-04 | 中国电力科学研究院 | Method for inhibiting subsynchronous oscillation of turbo generator set by additional coaxial double-feed motor |
| CN102769296A (en) * | 2012-07-04 | 2012-11-07 | 华北电力大学 | Supplementary subsynchronous damping control method of speed regulator |
| CN103795070A (en) * | 2014-01-16 | 2014-05-14 | 四川大学 | Multichannel direct current added damping control device capable of simultaneously restraining sub-synchronization and low frequency oscillation, and parameter setting method of multichannel direct current added damping control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105186543A (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105207236B (en) | Suppression sub-synchronous oscillation adaptive control system based on SVG | |
| CN104868487B (en) | Low-frequency range suppresses reinforced anti-reflective and adjusts electric system stabilizing method | |
| US20140246914A1 (en) | Sub-Synchronous Oscillation Damping By Shunt Facts Apparatus | |
| CN108134398B (en) | Method for inhibiting subsynchronous oscillation of thermal power generating unit based on current signal feedback | |
| CN103259472B (en) | The antihunt Adaptive Suppression system of Generator Set sub-synchronous oscillation | |
| Grignion et al. | Estimation of load disturbance torque for DC motor drive systems under robustness and sensitivity consideration | |
| CN108631332B (en) | Method and device for restraining double-fed wind power plant subsynchronous oscillation SVC | |
| CN102769296A (en) | Supplementary subsynchronous damping control method of speed regulator | |
| CN105186543B (en) | A kind of parameter tuning device and method of subsynchronous oscillation damping controller | |
| CN103701127A (en) | Novel active power filtering device and control method thereof | |
| CN103269082A (en) | Reverse oscillation suppression system and method of large-sized generator set subsynchronous oscillation | |
| CN109842126A (en) | A kind of flexible HVDC transmission system inhibits the stable control method of voltage oscillation | |
| Wang | Damping of torsional oscillations using excitation control of synchronous generator: the IEEE Second Benchmark Model investigation | |
| CN103326382A (en) | Subsynchronous oscillation anti-oscillation suppression system and method based on STATCOM | |
| CN115133527A (en) | AC/DC coordination control method based on cascade hybrid DC multi-band additional damping control | |
| CN110970927A (en) | Method and system for restraining sub-synchronous oscillation of grid-side converter of direct-drive fan | |
| CN109193705A (en) | Double-fed fan motor unit subsynchronous resonance suppressing method and device | |
| CN105186544A (en) | Subsynchronous oscillation inhibition method and device based on UPFC, and power generating system | |
| CN109004657A (en) | A kind of wind power plant sub-synchronous oscillation suppression method and system | |
| CN113258592B (en) | Additional damping suppression system and method for sub-synchronous and super-synchronous oscillation of offshore wind power | |
| CN109599867A (en) | Three-phase grid-connected converter electric current loop AF panel control method based on twin nuclei | |
| CN112765932B (en) | Method and device for analyzing influence of SVG on doubly-fed grid-connected system | |
| CN110808593B (en) | Method and device for analyzing damping of electromagnetic oscillation caused by multiple controllers in weak-connection power grid | |
| CN106253283A (en) | A kind of control strategy based on second harmonic mixing active filter | |
| Wang et al. | SSO suppression method and effectiveness of STATCOM in an identical multi‐machine system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Co-patentee after: BEIJING GUOHUA POWER Co.,Ltd. Patentee after: China Shenhua Energy Co.,Ltd. Co-patentee after: INNER MONGOLIA GUOHUA HULUN BUIR POWER GENERATION Co.,Ltd. Co-patentee after: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Co-patentee after: NORTH CHINA ELECTRIC POWER University Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Co-patentee before: BEIJING GUOHUA POWER Co.,Ltd. Patentee before: China Shenhua Energy Co.,Ltd. Co-patentee before: INNER MONGOLIA GUOHUA HULUN BUIR POWER GENERATION Co.,Ltd. Co-patentee before: RONGXIN POWER ELECTRONIC Co.,Ltd. Co-patentee before: NORTH CHINA ELECTRIC POWER University |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190415 Address after: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Co-patentee after: BEIJING GUOHUA POWER Co.,Ltd. Patentee after: China Shenhua Energy Co.,Ltd. Co-patentee after: INNER MONGOLIA GUOHUA HULUN BUIR POWER GENERATION Co.,Ltd. Co-patentee after: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Co-patentee after: NORTH CHINA ELECTRIC POWER University Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Co-patentee before: BEIJING GUOHUA POWER Co.,Ltd. Patentee before: China Shenhua Energy Co.,Ltd. Co-patentee before: INNER MONGOLIA GUOHUA HULUN BUIR POWER GENERATION Co.,Ltd. Co-patentee before: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Co-patentee before: NORTH CHINA ELECTRIC POWER University |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee after: China Shenhua Energy Co.,Ltd. Patentee after: BEIJING GUOHUA POWER Co.,Ltd. Patentee after: INNER MONGOLIA GUOHUA HULUN BUIR POWER GENERATION Co.,Ltd. Patentee after: Rongxin Huike Electric Co.,Ltd. Patentee after: NORTH CHINA ELECTRIC POWER University Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: China Shenhua Energy Co.,Ltd. Patentee before: BEIJING GUOHUA POWER Co.,Ltd. Patentee before: INNER MONGOLIA GUOHUA HULUN BUIR POWER GENERATION Co.,Ltd. Patentee before: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Patentee before: NORTH CHINA ELECTRIC POWER University |
|
| CP01 | Change in the name or title of a patent holder |