CN203405547U - Breaker monitoring system - Google Patents
Breaker monitoring system Download PDFInfo
- Publication number
- CN203405547U CN203405547U CN201320429996.9U CN201320429996U CN203405547U CN 203405547 U CN203405547 U CN 203405547U CN 201320429996 U CN201320429996 U CN 201320429996U CN 203405547 U CN203405547 U CN 203405547U
- Authority
- CN
- China
- Prior art keywords
- module
- processing section
- monitoring system
- isolating switch
- interface
- 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.)
- Expired - Fee Related
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 45
- 238000012545 processing Methods 0.000 claims abstract description 83
- 238000004891 communication Methods 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012806 monitoring device Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Landscapes
- Keying Circuit Devices (AREA)
Abstract
Provided is a breaker monitoring system, comprising an independent power module, a pulse train suppressor, a core processing module, a board card module, and a display module. The power module, the display module, and the board card module are respectively connected with the core processing module. The display module is connected with the board card module. The pulse train suppressor is connected with the power module. The system can be used for breaker status online monitoring devices of all types of 10KV to 750KV. Modular design is realized, and a single module is convenient to maintain. Direct measurement of switching-closing contacts is realized, and a plurality of paths of network devices can be accessed. The system is compatible to device connection of a plurality of protocols, thereby improving accuracy and external performance of the breaker monitoring system.
Description
Technical field
The utility model relates to power equipment monitoring technical field, is especially applied to 10KV to the state on_line monitoring device of all types of isolating switchs of 750KV (few oil, heavy wool, vacuum, SF6).
Background technology
In the electrical equipment of electric system, primary cut-out is unique opertaing device, and its reliability is directly connected to the safety and stablization of whole system, have a power failure all not normal relevant with primary cut-out of all major accidents mostly occurring or system parallel off.The major failure of primary cut-out has mechanical fault, insulation fault, arc extinguishing fault and conductor part heating accident etc., wherein especially with mechanical fault, occurs the most frequent.
General main the consisting of the following components of state monitoring system for circuit breaker on the market: analog input change send part, switch quantitative change to send part, collecting part, data processing section, network communication portion, RS485/RS232 communication interface part etc., and each functional module is integrated to be fixed on a base plate, cause a lot of inconvenience to production and follow-up maintenance.People's Republic of China's utility model patent Granted publication number is the disclosed a kind of circuit-breaker status detection system of CN 201689159 U; it has comprised two power module, input protection module, pulse train rejector and the core processing module that are fixed on side by side on base plate; this patent has realized split-type design; but on same base plate, still fixed the module of several difference in functionalitys, be unfavorable for producing and maintenance.In addition, at present isolating switch monitoring product on the market generally only can be monitored divide-shut brake process indirectly, realizes simple 485 communications, and cannot with other equipment connections, this has greatly limited accuracy and the external performance of isolating switch monitoring product.
Utility model content
Above-mentioned defect and problem for prior art, the purpose of this utility model is to provide a kind of split type isolating switch monitoring system of dividing according to functional module, and realize the direct measurement of divide-shut brake contact, accessible multi-channel network equipment, the connection of compatible various protocols equipment.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of isolating switch monitoring system, comprise power module, pulse train rejector, core processing module, board card module and display module, power module, display module, board card module are connected with core processing module respectively, display module is connected with board card module, and pulse train rejector is connected with power module.
Further technical scheme, connects AC connection terminal on described pulse train rejector.
Further technical scheme, described board card module is comprised of system disk, CONGA-CA945 part, power input terminal, RS485 communication terminal, RS232 communication terminal, ST light mouth, hard-disk interface, VGA interface and USB interface; Wherein, system disk, RS485 communication terminal, RS232 communication terminal, ST light mouth, hard-disk interface, VGA interface, USB interface are all partly connected with CONGA-CA945; System disk, CONGA-CA945 part, RS485 communication terminal, RS232 communication terminal, ST light mouth, hard-disk interface, VGA interface and USB interface are all connected to power input terminal.
Further technical scheme, described core processing module is comprised of DSP core processing module, SD storage card, RS485 processing section, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section and power input terminal; Wherein, SD storage card, RS485 processing section, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section are all connected with DSP core processing module with power input terminal; SD storage card, RS485 processing section, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section are all connected to power input terminal.
Further technical scheme, described board card module interconnection network interface.
Further technical scheme, described RS485 communication interface is 8 tunnels.
Further technical scheme, described stroke processing section connects rotary encoder.
The utility model adopts after technique scheme, when there is equipment failure, can effectively avoid the problem of integral demounting maintenance, and realized the direct monitoring of divide-shut brake contact, can be accessed by the equipment of multi-channel network equipment, various protocols, improved accuracy and the external performance of isolating switch monitoring system.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only an embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of isolating switch monitoring system described in the utility model;
Fig. 2 is the core processing module structural representation of isolating switch monitoring system described in the utility model;
Fig. 3 is the board card module structural representation of isolating switch monitoring system described in the utility model;
Fig. 4 is the breaker open operation action timing diagram of isolating switch monitoring system described in the utility model;
Fig. 5 is the switching value monitoring principle figure of isolating switch monitoring system described in the utility model;
Fig. 6 is the breaker closing action timing diagram of isolating switch monitoring system described in the utility model.
Wherein: 1, core processing module, 2, pulse train rejector, 3, AC connection terminal, 4, power module, 5, board card module, 6, display module, 7, stroke signal processing section, 8, rotary encoder, 9, auxiliary switch input processing part, 10, sensor signal processing section, 11, RS232 processing section, 12, SD memory card, 13, DSP core processing module, 14, power input terminal, 15, RS485 processing section, 16, RS485 communication terminal, 17, network interface, 18, ST light mouth, 19, CONGA-CA945 part, 20, VGA interface, 21, RS232 PORT COM, 22, USB interface, 23, hard-disk interface, 24, system disk.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, described embodiment is only embodiment of the utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, isolating switch monitoring system described in the utility model embodiment, comprise by screw and be separately fixed at power module, pulse train rejector, core processing module, board card module and the display module on shell, power module, display module, board card module are connected with core processing module respectively, display module is connected with board card module, pulse train rejector one end is connected with power module, and the pulse train rejector other end connects AC connection terminal.Adopt modular technical scheme, when a certain module breaks down, can check separately or detachable maintaining modules, thereby accelerated the speed of keeping in repair.
As shown in Figures 2 and 3, in the utility model embodiment, board card module and core processing module is specifically composed as follows: board card module has comprised system disk, CONGA-CA945 part, 8 road RS485 communication terminals, ST light mouth, hard-disk interface, VAG interface, RS232 interface, USB interface, RJ45 network interface and power input terminal; Core processing module is DSP core processing module, and it has also comprised SD storage card, RS 485 processing sections, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section and power input terminal.
In the utility model embodiment:
Power module is converted to the required power supply of other module on circuit board by AC220V;
Pulse train rejector filters the high-frequency impulse of input AC;
AC connection terminal access AC220V power supply;
Power input terminal on core processing module and board card module all receives the voltage of power module output;
Core processing module mainly completes the processing of differentiation, RS232 and RS485 signal that auxiliary switch input processing partly inputs, the processing of sensor and stroke signal, and complete the processing of input data;
Auxiliary switch input processing part is the signal that core processing module can receive by the signal isolation transmit of its input;
RS485 processing module is the manageable signal of core processing module by RS-485 isolation transmit;
RS232 processing module is the manageable signal of core processing module by RS-232 isolation transmit;
Sensor signal processing section is the signal that core processing module can receive by the signal transmitting of input;
Stroke signal processing section is the signal that core processing module can receive by the signal transmitting of input;
The auxiliary switch input signal of auxiliary switch input processing part connecting breaker;
RS485 communication terminal connects RS-485 signal;
RS232 communication terminal connects RS-232 signal;
The current signal of sensor signal processing section access isolating switch;
The measured dynamic/static contact number of degrees of stroke signal processing section access rotary encoder;
RJ45 network interface is by network insertion external signal.
By technique scheme, the utility model has been realized the split-type design according to functional module, adopts rotary encoder to realize the direct measurement of divide-shut brake contact, has improved the accuracy of monitoring; Multichannel RS485 communication terminal on board card module can be used for connecting multiple external unit, networking Interface realization the networking of isolating switch monitoring system, thereby improved the external performance of isolating switch monitoring system.
The principle of work of the isolating switch monitoring system described in the utility model embodiment is:
1, breaker open operation process
When fault occurs; protective relaying device monitors fault current; after response time time delay, protection starts; after the time delay of protection definite value, send separating brake order again; breaker open operation coil is charged simultaneously, and after the intrinsic opening time time delay of isolating switch, isolating switch dynamic/static contact is separated; fault current excision after the arc time again, separating brake completes.As shown in Figure 4, separating brake action sequence is as follows:
T
1---fault zero hour;
T
2---protection separating brake order output time (switching winding starts charged);
T
3---dynamic/static contact is constantly separated;
T
4---fault current quenching moment;
T
5---switching winding loop auxiliary contact disconnect constantly.
In separating brake process, can complete the monitoring of following parameter: operating time of protection is (containing definite value time delay T
1); Switching winding electrification time T
2; Opening time T
3; Arc time T
4; Intrinsic opening time T
5.
2, monitoring method
To protect control box separating brake relay idle contact access monitoring system, can issue an order (switching winding is charged) constantly by monitoring and protecting, by the idle contact access monitoring system of breaker open operation auxiliary contact, can the monitoring breaker switching winding dead electricity moment.Switching value is delivered to front end processor CPU board after isolating by photoelectric isolated chip, and its principle as shown in Figure 5.
The calculating of each parameter
T
1: operating time of protection (containing definite value time delay): T
1=t
2-t
1
T
2: switching winding electrification time: T
2=t
5-t
2
T
3: opening time: T
3=t
4-t
2
T
4: the arc time: T
4=t
4-t
3
T
5: intrinsic opening time: T
5=t
3-t
2
Then with setting comparison.Regulation lower limit≤T
3≤ set upper limit.Otherwise report to the police, record, print.
3, breaker closing process
Protective relaying device sends the order (or closing by hand) of closing a floodgate, and breaker closing coil is charged simultaneously, after the intrinsic closing time time delay of isolating switch, and the contact of isolating switch dynamic/static contact, then after inserting stroke, combined floodgate completes.As shown in Figure 6, feed motion is as follows:
T
6---(closing coil starts the charged moment) constantly sent in the order of closing a floodgate;
T
7---a fracture arc starting of isolating switch is constantly;
T
8---dynamic/static contact time of contact;
T
9---closing coil loop auxiliary contact disconnect constantly.
In making process, can complete the monitoring of following parameter: closing time T
6; Intrinsic closing time T
7; Closing coil electrification time T
8.
The calculating of each parameter:
T
6: closing time: T
6=t
7-t
6;
T
7: intrinsic closing time: T
7=t
8-t
6;
T
8: closing coil electrification time T
8=t
9-t
6.
4, contact of breaker life appraisal
Cut-off capacity ∑ I
2t can reflect contact of breaker ablation degree, and more contact ablation is more serious for its value.Use ∑ I
2t value and isolating switch are made the given permissible value comparison of factory, as ∑ I
2when t value surpasses its permissible value, should overhaul contact of breaker.
1) on fault oscillograph, obtain and cut-off the short-circuit current that breaking current I(fault oscillograph monitors from Current Transformer Secondary side and be multiplied by mutual inductor ratio);
2) according to above-mentioned monitoring method, obtain arc time t;
3) isolating switch often cut-offs first short circuit electric current, calculates and once cut-offs capacity I
2t;
4) the cumulative all previous capacity ∑ I that cut-offs of isolating switch
2t: isolating switch often cut-offs first short circuit electric current and accumulates once I
2t.
5, monitoring energy storage motor suppressed time
Whether the work of motor suppressed time reflection breaker mechanism accumulator system is normal, and whether hydraulic system has interior leakage, and motor frequent bulge or suppressed time are long, illustrates that mechanism's accumulator system needs maintenance.
Monitoring method: in electric motor starting signal circuit sampling, and record electric motor starting/stop constantly, calculating motor suppressed time.
6, statistics breaker open operation number of operations
Brake division loop of circuit breaker auxiliary contact are charged each time, and once, monitoring system device row add once record.
7, statistics breaker switching-on operation number of times
Closing circuit of circuit breaker auxiliary contact are charged each time, and once, monitoring system device row add once record.
8, statistics isolating switch cut-offs short-circuit current number of times
When being greater than certain value (as: protection definite value), records once isolating switch primary current.
Isolating switch monitoring system described in the utility model embodiment, by the monitoring breaker following parameters that divide-shut brake produces during moving each time, realizes above-mentioned functions:
1) divide-shut brake constantly;
2) isolating switch divides/closes state;
3) divide-shut brake action frequency;
4) arc duration;
5) electrical wear of main contact accumulative total is (with I
2t represents);
6) coil branch wire time;
7) auxiliary contact actuation time;
8) energy storage constantly;
9) energy storage number of times;
10) divide-shut brake process three-phase current waveform;
11) divide-shut brake coil current waveform;
12) energy storage motor working current waveform.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by the described protection domain with claim.
Claims (7)
1. an isolating switch monitoring system, it is characterized in that: comprise power module, pulse train rejector, core processing module, board card module and display module, described power module, display module, board card module are connected with core processing module respectively, described display module is connected with board card module, and described pulse train rejector is connected with power module.
2. a kind of isolating switch monitoring system according to claim 1, is characterized in that: the other end of described pulse train rejector connects AC connection terminal.
3. a kind of isolating switch monitoring system according to claim 1 and 2, is characterized in that: described board card module is comprised of system disk, CONGA-CA945 part, power input terminal, RS485 communication terminal, RS232 communication terminal, ST light mouth, hard-disk interface, VGA interface and USB interface; Described system disk, RS485 communication terminal, RS232 communication terminal, ST light mouth, hard-disk interface, VGA interface, USB interface are all partly connected with CONGA-CA945; Described system disk, CONGA-CA945 part, RS485 communication terminal, RS232 communication terminal, ST light mouth, hard-disk interface, VGA interface and USB interface are all connected to power input terminal.
4. a kind of isolating switch monitoring system according to claim 3, is characterized in that: described board card module interconnection network interface.
5. a kind of isolating switch monitoring system according to claim 3, is characterized in that: described RS485 communication terminal is 8 tunnels.
6. a kind of isolating switch monitoring system according to claim 1 and 2, is characterized in that: described core processing module is comprised of DSP core processing module, SD storage card, RS485 processing section, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section and power input terminal; Described SD storage card, RS485 processing section, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section are all connected with DSP core processing module with power input terminal; Described SD storage card, RS485 processing section, RS232 processing section, sensor signal processing section, auxiliary switch input processing part, stroke signal processing section are all connected to power input terminal.
7. a kind of isolating switch monitoring system according to claim 6, is characterized in that: described stroke processing section connects rotary encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320429996.9U CN203405547U (en) | 2013-07-19 | 2013-07-19 | Breaker monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320429996.9U CN203405547U (en) | 2013-07-19 | 2013-07-19 | Breaker monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203405547U true CN203405547U (en) | 2014-01-22 |
Family
ID=49941477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320429996.9U Expired - Fee Related CN203405547U (en) | 2013-07-19 | 2013-07-19 | Breaker monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203405547U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049211A (en) * | 2014-07-10 | 2014-09-17 | 南车株洲电力机车有限公司 | Fault detection device and breaker |
| CN104297675A (en) * | 2014-07-18 | 2015-01-21 | 国家电网公司 | All-state monitoring apparatus for opening and closing of circuit breaker |
| CN105954020A (en) * | 2016-05-31 | 2016-09-21 | 中车株洲电力机车有限公司 | Method and device for detecting synchronism of disconnecting switch |
| CN108152733A (en) * | 2018-03-06 | 2018-06-12 | 广西电网有限责任公司桂林供电局 | A kind of live detection branch wire time method for mechanical characteristic of high-voltage circuit breaker |
| CN111103535A (en) * | 2019-12-25 | 2020-05-05 | 深圳供电局有限公司 | Circuit breaker monitoring device |
| CN112731128A (en) * | 2020-12-14 | 2021-04-30 | 河南平高电气股份有限公司 | Switching-on and switching-off operation device for multi-type circuit breaker and fault detection method |
| TWI758972B (en) * | 2020-11-25 | 2022-03-21 | 台灣電力股份有限公司 | Power safety protection system |
-
2013
- 2013-07-19 CN CN201320429996.9U patent/CN203405547U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049211A (en) * | 2014-07-10 | 2014-09-17 | 南车株洲电力机车有限公司 | Fault detection device and breaker |
| CN104297675A (en) * | 2014-07-18 | 2015-01-21 | 国家电网公司 | All-state monitoring apparatus for opening and closing of circuit breaker |
| CN105954020A (en) * | 2016-05-31 | 2016-09-21 | 中车株洲电力机车有限公司 | Method and device for detecting synchronism of disconnecting switch |
| CN108152733A (en) * | 2018-03-06 | 2018-06-12 | 广西电网有限责任公司桂林供电局 | A kind of live detection branch wire time method for mechanical characteristic of high-voltage circuit breaker |
| CN108152733B (en) * | 2018-03-06 | 2020-04-14 | 广西电网有限责任公司桂林供电局 | Method for detecting opening and closing time in electrified mode for mechanical characteristics of high-voltage circuit breaker |
| CN111103535A (en) * | 2019-12-25 | 2020-05-05 | 深圳供电局有限公司 | Circuit breaker monitoring device |
| TWI758972B (en) * | 2020-11-25 | 2022-03-21 | 台灣電力股份有限公司 | Power safety protection system |
| CN112731128A (en) * | 2020-12-14 | 2021-04-30 | 河南平高电气股份有限公司 | Switching-on and switching-off operation device for multi-type circuit breaker and fault detection method |
| WO2022127160A1 (en) * | 2020-12-14 | 2022-06-23 | 河南平高电气股份有限公司 | Opening/closing operation apparatus for multiple types of circuit breaker, and fault detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203405547U (en) | Breaker monitoring system | |
| CN201689159U (en) | State monitoring system of circuit breaker | |
| CN107171431B (en) | Uninterrupted power regulating equipment, uninterrupted power regulating system and uninterrupted power regulating control method | |
| CN203084097U (en) | On-line zinc oxide lightning arrester state monitoring device | |
| CN103516052A (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN204156517U (en) | A kind of intelligent substation low-voltage bus bar protection system | |
| CN103457358A (en) | Power distribution equipment working condition on-line monitoring and early-warning system | |
| CN202363966U (en) | Automatic switching device for emergency power supply | |
| CN204696029U (en) | Monostable permanent magnetic mechanism controller and there is its vacuum circuit-breaker | |
| CN203522165U (en) | 20kV power distribution network neutral point grounding mode intelligent switching device | |
| CN206977035U (en) | A kind of device for reducing high voltage electric equipment detonation damage | |
| CN201984117U (en) | Capacitor group switching testing device | |
| CN202042813U (en) | Switch type 10 kV temporary box type power transformation device | |
| CN204578068U (en) | Line transformer group non-electricity protecting device and system | |
| CN204424153U (en) | A kind of intelligent outdoor AC high-voltage vacuum recloser | |
| CN203562840U (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN204031039U (en) | A kind of voltage shock avoiding motor intelligent manager | |
| CN203813447U (en) | Transformer station high voltage reactive automatic compensation device | |
| CN105353238A (en) | Analog switch for 10kV boundary-type automatic terminal, and implementation method | |
| CN203504294U (en) | Online monitoring early-warning system of operating conditions of power distribution equipment | |
| CN203261125U (en) | Self-powered digital relay | |
| CN203242927U (en) | Intelligent ring main unit | |
| CN201937341U (en) | Non-voltage recovery device of remote monitoring type distribution room | |
| CN202256616U (en) | Condition monitoring system for circuit breaker | |
| CN202978242U (en) | Photoelectric type arc light protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING GUODIAN TOP FIVE TECHNOLOGY CORP. Free format text: FORMER NAME: BEIJING NAT TUOFENG TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100094, new building, building 5, 7 Hui Feng Road, Beijing, Haidian District, 517 Patentee after: Beijing Guodian pioneer Polytron Technologies Inc. Address before: 100094, new building, building 5, 7 Hui Feng Road, Beijing, Haidian District, 519 Patentee before: BEIJING GUODIAN TOP FIVE TECHNOLOGY Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
|
| CU01 | Correction of utility model | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: Expiration and Termination of 39 Volume 3102 Patent on August 4, 2023 Number: 31-02 Volume: 39 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 |