CN201364487Y - Incoming line switch control module for nuclear power station electric power plant - Google Patents
Incoming line switch control module for nuclear power station electric power plant Download PDFInfo
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- CN201364487Y CN201364487Y CNU2008202065922U CN200820206592U CN201364487Y CN 201364487 Y CN201364487 Y CN 201364487Y CN U2008202065922 U CNU2008202065922 U CN U2008202065922U CN 200820206592 U CN200820206592 U CN 200820206592U CN 201364487 Y CN201364487 Y CN 201364487Y
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Automation & Control Theory (AREA)
- Safety Devices In Control Systems (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to an incoming line switch control module for a nuclear power station electric power plant, which is characterized by comprising an input order processing logic unit (1), a fault processing logic unit (2), a state processing logic unit (3), an output order generation logic unit (4) and a incoming line switch cabinet, wherein three input ends of the input order processing logic unit (1) are respectively connected with a fault signal (1-1), a blocking signal (1-2) and an operator station human-computer interface signal (1-3) of the incoming line switch cabinet, two output ends of the input order processing logic unit (1) are respectively connected with the input ends of the fault processing logic unit (2) and the output order generation logic unit (4); and an output end of the output order generation logic unit (4) is connected with the control order signal end (4-1) of the incoming line switch cabinet. The incoming line switch control module adopts a disperse control system DCS which is unified with a machine unit, realizes the operator station which is shared by control of an incoming line switch and a machine unit control system and integral monitoring, and has the effect on enhancing the operation reliability of the machine unit.
Description
Technical field
The utility model relates to a kind of nuclear power station power plant service entrance switch control module, is applicable to switchgear control in the 6.6kV power plant using electricity system, particularly is suitable for nuclear power station 6.6kV power plant electric power incoming line switch control module.Belong to the electrical equipment technical field
Background technology
In nuclear power plant, the reliability of 6.6kV power plant service entrance switch control is most important to 6.6kV power plant using electricity system, 380V station service electrical system and nuclear power plant's unit safety operation, more is related to the safe operation of nuclear island.The 6.6kV service entrance switch control of existing technology is to be finished by the relay control device that is arranged in the switch cubicle; comprise auxiliary reclay, protection with current relay and voltage relay, and be loaded on control, interlocking, measurement and monitor alarm that the switching auxiliary reclay of relay rack, the gauge tap that is loaded on the pulpit and measurement instrument and stube cable are realized switch.Exist wiring complexity, poor reliability, difficult in maintenance, thereby efficient is low, the more defective that increases its operation cost of maintainer that drops into.
The utility model content
The purpose of this utility model, be for the nuclear power station 6.6kV service entrance switch control loop poor reliability that solves prior art, difficult in maintenance, efficient is low, the defective that the maintainer is more, operation cost is high that drops into, and a kind of nuclear power station power plant service entrance switch control module is provided.
The purpose of this utility model can reach by taking following technical scheme:
Nuclear power station power plant service entrance switch control module, its design feature is: become with the service entrance switch group by input instruction processing logic unit, fault handling logical block, state processing logical block, output order formation logic unit; Three input ends of input instruction processing logic unit connect fault-signal, block signal and the operator station man-machine interface signal of service entrance switch cabinet respectively, and its two output terminals connect an input end of fault handling logical block and output order formation logic unit respectively; Two input ends of fault handling logical block are an output terminal of connection status processing logic unit and output order formation logic unit respectively, and its two output terminals connect input end of output order formation logic unit and the man-machine interface end of reporting to the police respectively; The input end of state processing logical block connects service entrance switch location status feedback signal, an output terminal connects the man-machine interface display end; An output terminal of output order formation logic unit connects service entrance switch cabinet control command signal end.
The purpose of this utility model can also reach by taking following technical scheme:
A kind of embodiment of the present utility model is: input instruction processing logic unit can be by being formed by connecting with door chip IC 1～IC6 or door chip I 1～I3, chronotron chip T1 and R/S trigger Q1; The fault handling logical block is by being formed by connecting with door chip IC 7～IC8 or door chip I 5, R/S trigger Q2～Q3, chronotron chip T2～T3; The state processing logical block is by being formed by connecting with door chip IC 9～IC10 or door chip I 6～I7; Output order formation logic unit by with door chip IC 11 and or a door chip I 8 be formed by connecting; Several fault-signals of service entrance switch cabinet connect the input end with door chip IC 1, IC5 or door chip I 1, I2 respectively, input end and the input end of Q1, the output terminal of IC1 that the output terminal of I1, I2 connects IC2 respectively are connected the input end of IC2 by T1, the output terminal of IC2, the output terminal of Q1 connect the input end of I3 respectively, and the output terminal of I3 is by the input end of connection IC5, the IC6 of I4; Block signal connects the input end of an input end, IC8 of an input end, the IC7 of IC4 and the input end of IC11 respectively; Operator station man-machine interface signal connects the input end of each input end of IC4～IC3, IC11 respectively; Several service entrance switch location status feedback signals connect the input end of I5, I6, I7 and IC9, IC10 respectively; The output terminal of I8 and IC11 is connected service entrance switch cabinet control command signal end; The output terminal of Q1, Q2 and I5 is connected man-machine interface warning end; The output terminal of IC9 and I7 is connected the man-machine interface display end.
A kind of embodiment of the present utility model is: the fault-signal of service entrance switch cabinet can comprise active section busbar voltage low signal, active section bus PT does not have disconnection signal, people's section of work PT dolly is at the working position signal, active section service entrance switch overcurrent relay actuating signal, block switch overcurrent relay actuating signal, active section is by the auxilliary power supply signal that becomes, dead section service entrance switch switching signal, the block switch switching signal, the tripping operation brace withdraws from signal, there is electric signal active section busbar voltage AC phase low signal and step-down transformer high-pressure side; Block signal can comprise to be opened the OPEN signal, closes the CLOSE signal; Operator station man-machine interface signal can comprise the gauge tap of a distant place/on the spot in the distance position signalling, select the DCS control signal.
A kind of embodiment of the present utility model is: service entrance switch location status feedback signal can comprise active section service entrance switch switching signal, active section service entrance switch at the test switch of working position signal, active section service entrance switch at testing position signal, active section service entrance switch sub-gate signal, active section service entrance switch at the test switch of testing position signal, active section service entrance switch at normal position signal and active section service entrance switch cabinet fault-signal.
A kind of embodiment of the present utility model is: service entrance switch cabinet control command signal end comprises trip signal and switching signal.
The beneficial effects of the utility model are:
1, the utility model adopts and the unified scattered control system DCS of unit, realizes the control and unit control system sharing operation person station of service entrance switch, and integral monitoring has the effect of the reliability of raising unit operation.
2, therefore the utility model can improve the automatization level of unit greatly owing to employing and the unified scattered control system DCS of unit, reduces operation maintenance personnel's setting, reaches the purpose of personnel reduction and enlargement, has the effect of reduction use and maintenance cost.
Description of drawings
Fig. 1 is a logic theory block diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of a specific embodiment of the utility model.
Fig. 3 is a workflow diagram of the present utility model.
Embodiment
With reference to Fig. 1, present embodiment is formed by connecting by input instruction processing logic unit 1, fault handling logical block 2, state processing logical block 3, output order formation logic unit 4 and service entrance switch cabinet; Three input ends of input instruction processing logic unit 1 connect fault-signal 1-1, block signal 1-2 and the man-machine interface signal 1-3 of operator station of service entrance switch cabinet respectively, and its two output terminals connect an input end of fault handling logical block 2 and output order formation logic unit 4 respectively; Two input ends of fault handling logical block 2 are an output terminal of connection status processing logic unit 3 and output order formation logic unit 4 respectively, and its two output terminals connect input end of output order formation logic unit 4 and the man-machine interface end 2-1 that reports to the police respectively; The input end of state processing logical block 3 connects service entrance switch location status feedback signal 3-1, an output terminal connects man-machine interface display end 3-2; An output terminal of output order formation logic unit 4 connects service entrance switch cabinet control command signal end 4-1.
With reference to Fig. 2, input instruction processing logic unit 1 can be by being formed by connecting with door chip IC 1～IC6 or door chip I 1～I3, chronotron chip T1 and R/S trigger Q1; Fault handling logical block 2 is by being formed by connecting with door chip IC 7～IC8 or door chip I 5, R/S trigger Q2～Q3, chronotron chip T2～T3; State processing logical block 3 is by being formed by connecting with door chip IC 9～IC10 or door chip I 6～I7; Output order formation logic unit 4 by with door chip IC 11 and or a door chip I 8 be formed by connecting; Several fault-signals 1-1 of service entrance switch cabinet connects the input end with door chip IC 1, IC5 or door chip I 1, I2 respectively, input end and the input end of Q1, the output terminal of IC1 that the output terminal of I1, I2 connects IC2 respectively are connected the input end of IC2 by T1, the output terminal of IC2, the output terminal of Q1 connect the input end of I3 respectively, and the output terminal of I3 is by the input end of connection IC5, the IC6 of I4; Block signal 1-2 connects the input end of an input end, IC8 of an input end, the IC7 of IC4 and the input end of IC11 respectively; The man-machine interface signal 1-3 of operator station connects the input end of each input end of IC4～IC3, IC11 respectively; Several service entrance switch location status feedback signals 3-1 connects the input end of I5, I6, I7 and IC9, IC10 respectively; The output terminal of I8 and IC11 is connected service entrance switch cabinet control command signal end 4-1; The output terminal of Q1, Q2 and I5 is connected man-machine interface warning end 2-1; The output terminal of IC9 and I7 is connected man-machine interface display end 3-2.
The fault-signal 1-1 of service entrance switch cabinet can comprise active section busbar voltage low signal 1-1-1, active section bus PT does not have disconnection signal 1-1-2, people's section of work PT dolly is at working position signal 1-1-3, active section service entrance switch overcurrent relay actuating signal 1-1-4, block switch overcurrent relay actuating signal 1-1-5, active section is by the auxilliary power supply signal 1-1-6 that becomes, dead section service entrance switch switching signal 1-1-7, block switch switching signal 1-1-8, the tripping operation brace withdraws from signal 1-1-9, there is electric signal 1-1-11 active section busbar voltage AC phase low signal 1-1-10 and step-down transformer high-pressure side; Block signal 1-2 can comprise and opens OPEN signal 1-2-1, closes CLOSE signal 1-2-2; The man-machine interface signal 1-3 of operator station can comprise the gauge tap of a distant place/on the spot in the distance position signalling 1-3-1, select DCS control signal 1-3-2.Service entrance switch location status feedback signal 3-1 can comprise active section service entrance switch switching signal 3-1-1, active section service entrance switch at the test switch of working position signal 3-1-2, active section service entrance switch at testing position signal 3-1-3, active section service entrance switch sub-gate signal 3-1-4, active section service entrance switch at the test switch of testing position signal 3-1-5, active section service entrance switch at normal position signal 3-1-6 and active section service entrance switch cabinet fault-signal 3-1-7.Service entrance switch cabinet control command signal end 4-1 comprises trip signal 4-1-1 and switching signal 4-1-2.
With reference to Fig. 3, concrete control flow of the present utility model is as follows:
1) by DCS man-machine interface input instruction;
2) carry out the feasibility of decision logic by the logical process element;
3) feasible instruction formation logic exports the breaker control circuit of service entrance switch cabinet to;
4) infeasible, fault-signal is exported by alarm, has pick-up unit to be transported to man-machine interface, reports to the police! Reset or handling failure;
3) lead-in circuit breaker location status feedback signal inputs to man-machine interface through DCS signal input route port.
See figures.1.and.2; the control of inlet wire and monitoring realize in the operator station of DCS by the operations staff; comprised that the operator station at DCS closes a floodgate and trip operation to the distant place of 6.6kV isolating switch; be installed in addition and protect action to make switch trip and location status feedback signal thereof after the interior microcomputer type comprehensive protector of switch cubicle detects the electric loop fault; the alerting signal of mechanical fault in the switch cubicle; by being installed on the CT in the switch cubicle; the electrical measurement signal that PT obtains etc.; these signals are delivered to the control module of DCS by cable; control module is carried out logical process according to service requirement, sends then to jump and closes/lock instruction and provide corresponding normal signal and alerting signal.
In the present embodiment, the signal of man-machine interface input route port is connected in the output route port of fault handling logical block 2.The signal routes input port of fault handling logical block 2 is connected in the signal output route port of state processing logical block 3, input instruction processing logic unit 1 and output order formation logic unit 4.The signal input route port of input instruction processing logic unit 1 and state processing logical block 3 is connected in the control signal output route port of field apparatus.
Input instruction Logical processing unit 1 is for receiving external signal, the signal of input carries out its feasibility of decision logic in the unit after testing, the corresponding result of providing of output order and fault handling is provided, and and the operational order of DCS operation interface be connected in output port together.Its signal routes input port is connected in service entrance switch cabinet and other and service entrance switch control interlocking or the relevant switch cubicle of alerting signal,
Output order formation logic unit 4 is the results according to input instruction Logical processing unit 1 decision logic feasibility, exports to the lead-in circuit breaker control loop.
State processing logical block 3 is to receive the lead-in circuit breaker location status to handle and deliver to man-machine interface and fault handling logic element.
Fault handling logical block 2 is its not all right property signal of input instruction logical process element decision logic to be handled and exported to man-machine interface with other fault-signals report to the police, reset or handling failure by fault alarm
Service entrance switch is the isolating switch that cut-offs of incoming power, is installed in the switch cubicle, connects to cause house transformer, for the 6.6kV bus provides power supply.
The utility model is except the 6.6kV power plant that is applicable to the described nuclear power station of specific embodiment controls with service entrance switch, the also service entrance switch control that can extensively use in other high and low pressure power plant, its scope of application is not subjected to the restriction of the 6.6kV power plant of aforementioned specific embodiment with service entrance switch control.
Claims (5)
1, nuclear power station power plant service entrance switch control module is characterized in that: become with the service entrance switch group by input instruction processing logic unit (1), fault handling logical block (2), state processing logical block (3), output order formation logic unit (4); Three input ends of input instruction processing logic unit (1) connect fault-signal (1-1), block signal (1-2) and the operator station man-machine interface signal (1-3) of service entrance switch cabinet respectively, and its two output terminals connect an input end of fault handling logical block (2) and output order formation logic unit (4) respectively; Two input ends of fault handling logical block (2) are an output terminal of connection status processing logic unit (3) and output order formation logic unit (4) respectively, and its two output terminals connect input end of output order formation logic unit (4) and man-machine interface respectively and report to the police and hold (2-1); The input end of state processing logical block (3) connects service entrance switch location status feedback signal (3-1), an output terminal connects man-machine interface display end (3-2); An output terminal of output order formation logic unit (4) connects service entrance switch cabinet control command signal end (4-1).
2, nuclear power station according to claim 1 power plant service entrance switch control module is characterized in that: input instruction processing logic unit (1) is by being formed by connecting with door chip IC 1～IC6 or door chip I 1～I3, chronotron chip T1 and R/S trigger Q1; Fault handling logical block (2) is by being formed by connecting with door chip IC 7～IC8 or door chip I 5, R/S trigger Q2～Q3, chronotron chip T2～T3; State processing logical block (3) is by being formed by connecting with door chip IC 9～IC10 or door chip I 6～I7; Output order formation logic unit (4) by with door chip IC 11 and or a door chip I 8 be formed by connecting; Several fault-signals (1-1) of service entrance switch cabinet connect the input end with door chip IC 1, IC5 or door chip I 1, I2 respectively, input end and the input end of Q1, the output terminal of IC1 that the output terminal of I1, I2 connects IC2 respectively are connected the input end of IC2 by T1, the output terminal of IC2, the output terminal of Q1 connect the input end of I3 respectively, and the output terminal of I3 is by the input end of connection IC5, the IC6 of I4; Block signal (1-2) connects the input end of an input end, IC8 of an input end, the IC7 of IC4 and the input end of IC11 respectively; Operator station man-machine interface signal (1-3) connects the input end of each input end of IC4～IC3, IC11 respectively; Several service entrance switch location status feedback signals (3-1) connect the input end of I5, I6, I7 and IC9, IC10 respectively; The output terminal of I8 and IC11 is connected service entrance switch cabinet control command signal end (4-1); The output terminal of Q1, Q2 and I5 is connected man-machine interface warning end (2-1); The output terminal of IC9 and I7 is connected man-machine interface display end (3-2).
3, nuclear power station according to claim 1 power plant service entrance switch control module, it is characterized in that: the fault-signal of service entrance switch cabinet (1-1) comprises active section busbar voltage low signal (1-1-1), active section bus PT does not have disconnection signal (1-1-2), people's section of work PT dolly is at working position signal (1-1-3), active section service entrance switch overcurrent relay actuating signal (1-1-4), block switch overcurrent relay actuating signal (1-1-5), active section is by the auxilliary power supply signal (1-1-6) that becomes, dead section service entrance switch switching signal (1-1-7), block switch switching signal (1-1-8), the tripping operation brace withdraws from signal (1-1-9), there is electric signal (1-1-11) active section busbar voltage AC phase low signal (1-1-10) and step-down transformer high-pressure side; Block signal (1-2) comprises to be opened OPEN signal (1-2-1), closes CLOSE signal (1-2-2); Operator station man-machine interface signal (1-3) comprise the gauge tap of a distant place/on the spot in the distance position signalling (1-3-1), select DCS control signal (1-3-2).
4, nuclear power station according to claim 1 power plant service entrance switch control module, it is characterized in that: service entrance switch location status feedback signal (3-1) comprises active section service entrance switch switching signal (3-1-1), the active section service entrance switch is at working position signal (3-1-2), the test switch of active section service entrance switch is at testing position signal (3-1-3), active section service entrance switch sub-gate signal (3-1-4), the active section service entrance switch is at testing position signal (3-1-5), the test switch of active section service entrance switch is at normal position signal (3-1-6) and active section service entrance switch cabinet fault-signal (3-1-7).
5, nuclear power station according to claim 1 power plant service entrance switch control module, it is characterized in that: service entrance switch cabinet control command signal end (4-1) comprises trip signal (4-1-1) and switching signal (4-1-2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202065922U CN201364487Y (en) | 2008-12-31 | 2008-12-31 | Incoming line switch control module for nuclear power station electric power plant |
| PCT/CN2009/073433 WO2010075693A1 (en) | 2008-12-31 | 2009-08-21 | Lead-in switch control module of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202065922U CN201364487Y (en) | 2008-12-31 | 2008-12-31 | Incoming line switch control module for nuclear power station electric power plant |
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| Publication Number | Publication Date |
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| CN201364487Y true CN201364487Y (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008202065922U Expired - Lifetime CN201364487Y (en) | 2008-12-31 | 2008-12-31 | Incoming line switch control module for nuclear power station electric power plant |
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| Country | Link |
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| CN (1) | CN201364487Y (en) |
| WO (1) | WO2010075693A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683484A (en) * | 2013-12-31 | 2014-03-26 | 大唐贵州发耳发电有限公司 | Circuit switching device |
| CN107465172A (en) * | 2017-08-11 | 2017-12-12 | 马鞍山钢铁股份有限公司 | A kind of ACS800 converter plants are by electric switch control method |
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| CN108735321A (en) * | 2018-06-22 | 2018-11-02 | 江苏核电有限公司 | A kind of control loop power supply is in alarm device and its verification method |
| CN110138076B (en) * | 2019-04-30 | 2024-05-10 | 泰豪科技(深圳)电力技术有限公司 | Two-incoming-line one-bus-connection automatic switching control system and method |
| CN113109041B (en) * | 2021-04-07 | 2023-08-08 | 华能上海石洞口发电有限责任公司 | Verification mode improvement method for steam turbine side low-point drainage executing mechanism of thermal power plant |
| CN114019872B (en) * | 2021-11-05 | 2023-11-14 | 中冶赛迪电气技术有限公司 | Circuit breaker opening and closing time sequence and fault judgment logic control system thereof |
| CN115437314A (en) * | 2022-01-07 | 2022-12-06 | 呼伦贝尔安泰热电有限责任公司海拉尔热电厂 | Method for changing PLC control of oil station actuating mechanism into DCS control |
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| CN117134302A (en) * | 2022-03-25 | 2023-11-28 | 厦门华夏国际电力发展有限公司 | Method and system for identifying and controlling abnormal working conditions of electric valve station |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3352411B2 (en) * | 1998-03-05 | 2002-12-03 | 株式会社東芝 | Control system, power system protection control system, and storage medium storing program |
| JP4154495B2 (en) * | 2003-07-01 | 2008-09-24 | 株式会社システック | Integrated power generation system |
| DE102005007017B4 (en) * | 2005-02-15 | 2015-04-16 | Abb Technology Ag | Medium or high voltage switchgear consisting of at least one switching device |
| CN2772098Y (en) * | 2005-03-21 | 2006-04-12 | 北京华宇先锋电气安全科技有限公司 | Electric safety monitoring system |
| CN201156681Y (en) * | 2008-01-28 | 2008-11-26 | 苏善伟 | Intelligent power distribution system |
-
2008
- 2008-12-31 CN CNU2008202065922U patent/CN201364487Y/en not_active Expired - Lifetime
-
2009
- 2009-08-21 WO PCT/CN2009/073433 patent/WO2010075693A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683484A (en) * | 2013-12-31 | 2014-03-26 | 大唐贵州发耳发电有限公司 | Circuit switching device |
| CN107465172A (en) * | 2017-08-11 | 2017-12-12 | 马鞍山钢铁股份有限公司 | A kind of ACS800 converter plants are by electric switch control method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010075693A1 (en) | 2010-07-08 |
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Inventor after: Wang Xiaohu Inventor after: Tang Hongjian Inventor after: Wang Shaoyong Inventor after: Chen Huamin Inventor after: Yang Li Inventor after: Xie Chuangshu Inventor after: Tan Jiangping Inventor before: Wang Xiaohu Inventor before: Wang Shaoyong Inventor before: Chen Huamin Inventor before: Yang Li Inventor before: Xie Chuangshu Inventor before: Tan Jiangping |
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Free format text: CORRECT: INVENTOR; FROM: WANG XIAOHU WANG SHAOYONG CHEN HUAMIN YANG LI XIE CHUANGSHU TAN JIANGPING TO: WANG XIAOHU TANG HONGJIAN WANG SHAOYONG CHEN HUAMIN YANG LI XIE CHUANGSHU TAN JIANGPING |
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Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
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| CP03 | Change of name, title or address |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Guangdong Electric Power Design Institute of CEEC Address before: 510080 No. 846 Dongfeng East Road, Guangdong, Guangzhou Patentee before: Guangdong Electric Power Design Institute |
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| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
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| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091216 |