CN201514448U - Integrated testing device of relay protection - Google Patents
Integrated testing device of relay protection Download PDFInfo
- Publication number
- CN201514448U CN201514448U CN2009200777518U CN200920077751U CN201514448U CN 201514448 U CN201514448 U CN 201514448U CN 2009200777518 U CN2009200777518 U CN 2009200777518U CN 200920077751 U CN200920077751 U CN 200920077751U CN 201514448 U CN201514448 U CN 201514448U
- Authority
- CN
- China
- Prior art keywords
- module
- voltage
- phase
- relay protection
- phase voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an integrated testing device of relay protection, which belongs to the field of electrical measurement. The integrated testing device comprises a single-phase voltage/current output module and is characterized by also comprising a four-phase voltage output module, an ARM microprocessor module, a DAC digital/analog conversion module, a DSP digital signal processing module and a communication module. The single-phase voltage/current output module is connected with the communication module through the ARM microprocessor module; the four-phase voltage output module is connected with the communication module through the DAC digital/analog conversion module and the DSP digital signal processing module; the communication module is correspondingly connected with the communication module/port of a host computer; and the host computer is provided with corresponding four-phase voltage module control software, voltage frequency module control software and single-phase AC or DC voltage/current module control software. The utility model has the function of detecting the voltage relay and the frequency relay, realizes the purposes of reducing labor force and increasing the efficiency, and can be widely applied in the field of the test of the relay protection device of the electrical system.
Description
Technical field
The utility model belongs to the electrical measurement field, relates in particular to a kind of test or calibrating installation that is used for power system relay protection device.
Background technology
When fault has taken place and has jeopardized safe operation of power system in the force device in the electric system (as generator, circuit etc.) or electric system itself; need a kind of can in time sending warning signal from the trend runtime value personnel of class; perhaps directly send trip signal to stop the equipment or the device of these incident development to the isolating switch of being controlled; realize the equipment or the device of this robotization measure, be commonly referred to as protective relaying device.
Along with developing rapidly of China's power industry technologies level, various protective relaying devices are generally adopted.
Protective relaying device mainly is to utilize element in the electric system to be short-circuited or the variation of the electric parameters (electric current, voltage, power, frequency etc.) during abnormal conditions constitutes the principle of relay protection action; the physical quantity that also has other, a large amount of gas supervened during as the oil tank of transformer internal fault and the increase of oily flow velocity degree or increasing of oil pressure intensity.In most cases, which kind of physical quantity tube reaction is not, and protective relaying device all comprises measure portion (with the definite value adjustment member), logical gate and operating part at least.
Relay-protection tester; be used for exactly detecting, the specialized equipment of the working value correctness of the various protective relaying devices of verification; its by detect various protective relaying devices to reaction velocity, the reaction time of the physical quantity of the simulated failure phenomenon imported, whether move, the length of actuation time or the like, judge, debug various protective relaying devices and whether can satisfy or reach predetermined design/work/protection requirement.
The common function singleness of existing relay-protection tester device, for finish a transformer and distribution power station/in periodic check, the debugging work of various types of protective relaying devices of installing, need the experimenter to carry many various testing tools usually; For example, may need to carry volt-ampere characteristic test instrument, transformer test instrument, direct current operative power source, single-phase relay-protection tester and cranking test device etc.; In addition, a lot of testers are according to the difference of its tested object, the branch of single-phase in addition, three-phase specification; For example, when test/verification three-phase voltage relay and frequency relay, just must carry/use the three-phase check meter, but the single-phase relatively check meter of power of each current channel output of three-phase check meter is much smaller; So big to check quick-break electric current and have when testing by the computer line protection of cycle, testing crew just must carry single-phase and three-phase check meter simultaneously.
Like this, the prior preliminary work amount of verification, debugging work just seems heavier, and omits easily; On the other hand, prepare instrument, change the instrument wiring, the carrying instrument, personnel's number that will certainly require to participate in whole verification, debugging work increases; Moreover the verification/debug-item of a protective relaying device needs to change many (platform cover) instruments sometimes and tests, and waste work effective time, work is brought bigger inconvenience.
The utility model content
Technical problem to be solved in the utility model provides a kind of Test Device for Relay Protection; it is at the test event of existing conventional relay equipment; circuit structure and function to existing proving installation are improved/are optimized; make it can be on the basis of existing test function; relevant test event/function is provided as much as possible; only need carry a check meter just can finish to check quick-break electric current greatly and check by the computer line protective device of cycle arranged; to reduce the kind that the operating personnel carries testing tool; reduce the wiring workload; and then reach and increase work efficiency, simplify the purpose of personnel's number of participating in whole verification/debugging work.
The technical solution of the utility model is: a kind of Test Device for Relay Protection is provided, comprise single-phase voltage/electric current output module, it is characterized in that: also be provided with four phase voltage output modules, ARM micro treatment module, DAC D/A switch module, DSP digital signal processing module and communication module; Its single-phase voltage/electric current output module is connected with communication module through the ARM micro treatment module; Its four phase voltages output module is connected with communication module through DAC D/A switch module, DSP digital signal processing module; The corresponding connection of communication module/port of its communication module and host computer; In host computer, be provided with corresponding four phase voltage module controls softwares, electric voltage frequency module controls software and blow-up DC voltage/current module controls software.
Its described single-phase voltage/electric current output module is the generation/output circuit of blow-up DC voltage/current.
Its described four phase voltage output modules are four-way combined-voltage generation/output circuits.
Its described ARM micro treatment module comprises risc processor chip and peripheral circuit thereof.
Its described DAC D/A switch module comprises D/A chip and peripheral circuit thereof.
Its described DSP digital signal processing module comprises DSP chip and peripheral circuit thereof.
Its described communication module comprises RS-232 interface circuit and/or usb circuit.
Its described host computer is an industrial computer.
Further, its described four phase voltage module controls softwares and electric voltage frequency module controls software, by host computer and communication module, the work of control DSP digital signal processing module, the waveform that needs through the output of DAC D/A switch module is controlled four phase voltage value and needed frequency that four-way voltage output module is exported again.
Its described blow-up DC voltage/current module controls software, by host computer and communication module, the work of control ARM micro treatment module through single-phase voltage/electric current output module, is exported needed voltage and/or electric current again.
Compared with the prior art, the utility model has the advantages that:
1. newly-increased 4 passage alternating voltages output can be satisfied all kinds of three-phase low pressure of check, pressure is arranged, the requirement of overvoltage, differential pressure protection;
2. output voltage frequency is adjustable, can satisfy the requirement of all kinds of single-phase, three-phase frequency protections of check;
3. the function that has had check voltage (single-phase, alternate or three-phase low pressure, pressure, overvoltage, differential pressure etc. are arranged) relay and frequency (single-phase or three-phase) relay; only need carry a check meter and just can finish greatly and check by the computer line protective device of cycle is arranged, realize same work is reduced the goal of the invention of artificial/increase efficient check quick-break electric current.
Description of drawings
Fig. 1 is an electric functional-block diagram of the present utility model;
Fig. 2 is the wiring diagram of risc processor chip and peripheral circuit thereof;
Fig. 3, Fig. 4 and Fig. 5 are the wiring diagrams of D/A chip and peripheral circuit thereof;
Fig. 6 is the wiring diagram of DSP chip and peripheral circuit thereof;
Fig. 7 is the wiring diagram of blow-up DC voltage/current generation/output circuit;
Fig. 8, Fig. 9 and Figure 10 are the wiring diagrams of four phase voltage alternating current-direct current generation/output circuits.
1 is single-phase voltage/electric current output module among the figure; 2 is four phase voltage output modules; 3 is the ARM micro treatment module; 4 is DAC D/A switch module; 5 is the DSP digital signal processing module, and 6-1,6-2 are communication module, and 7,8,9 correspond to four phase voltage module controls softwares, electric voltage frequency module controls software and blow-up DC voltage/current module controls software respectively; A is a Test Device for Relay Protection, and B is a host computer.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among Fig. 1, this Test Device for Relay Protection A comprises single-phase voltage/electric current output module 1, and it also is provided with four phase voltage output modules 2, ARM micro treatment module 3, DAC D/A switch module 4, DSP digital signal processing module 5 and communication module 6-1; Its single-phase voltage/electric current output module is connected with the communication module 6-1 of body through the ARM micro treatment module; Its four phase voltages output module is connected with the communication module 6-1 of body through DAC D/A switch module, DSP digital signal processing module; The corresponding connection of communication module/port 6-2 of its communication module 6-1 and host computer; In host computer B, be provided with corresponding four phase voltage module controls softwares 7, electric voltage frequency module controls software 8 and blow-up DC voltage/current module controls software 9.
Particularly, its single-phase voltage/electric current output module is the generation/output circuit of single-phase voltage/electric current.
The compound composition of single channel combined-voltage generation/output circuit of its four phase voltages output module or close circuit structure identical by four groups.
Its ARM micro treatment module comprises risc processor chip and peripheral circuit thereof.
Its DAC D/A switch module comprises D/A chip and peripheral circuit thereof.
Its DSP digital signal processing module comprises DSP chip and peripheral circuit thereof.
Its communication module can be RS-232 interface circuit and/or usb circuit.
Its host computer is PC, industrial computer or embedded computer.
Further; by the signal flow among the figure as can be seen to relation; its four phase voltages module controls software and electric voltage frequency module controls software; by host computer and corresponding communication module; the work of DSP digital signal processing module in the control Test Device for Relay Protection; the waveform that needs through the output of DAC D/A switch module is controlled four phase voltage value and needed frequency that four-way voltage output module is exported again.
Its blow-up DC voltage/current module controls software; by host computer and corresponding communication module; the work of ARM micro treatment module through single-phase voltage/electric current output module, is exported needed voltage and/or electric current again in the control Test Device for Relay Protection.
Owing to adopted the foregoing circuit structure, make this comprehensive test device except the required test resource of single-phase test can be provided, also had the function of check voltage (single-phase, alternate or three-phase low pressure, pressure, overvoltage, differential pressure etc. are arranged) relay and frequency (single-phase or three-phase) relay.
Among Fig. 2, provided ARM (Advanced RISC Machines, the Embedded RISC kernel) wiring diagram of processor chips U20 and peripheral circuit thereof, be actually a typical R ISC (Reduced Instruction SetComputer, flush bonding processor) circuit, integrated circuit U20 wherein can select ATMEGA2561 for use, ARM7TDMI, ARM9TDMI, ARM922T, ARM940T, RM946T, ARM966T, the integrated circuit (IC) chip that functions such as ARM10TDM1 are identical or close, U21 and U22 can select the identical or close integrated circuit (IC) chip of function of 74LV series for use.
ARM (Advanced RISC Machines) is a tame esbablished corporation of microprocessor industry, and it has designed big quantity high performance, cheapness, low risc processor, correlation technique and the software of power consumption.
The ARM framework is the first item risc microcontroller towards the design of low budget market, substantially be the industry standard of 32 single-chip microcomputers, it provides a series of kernels, system expansion, microprocessor and System on Chip/SoC scheme, and four functional modules can dispose production according to the requirement of different user for production firm.Because all products all adopt a general software architecture, so identical software can move in all products.
ARM occupies the share more than 90 in handheld device market at present, can shorten the time of application development and test effectively, has also reduced the research and development expense.
The prior art that has particular application as owing to the ARM framework, its concrete principle of work, pin definitions, Interface Matching and concrete signal flow to, no longer carefully state at this, specifically can (write for yellow with reference to " AVR single-chip microcomputer and CPLD_FPGA integrated application are crossed the threshold ", publishing house of BJ University of Aeronautics ﹠ Astronautics, August in 2004 the 1st edition), " explain the profound in simple terms ARM7--LPC213x (on. down) " service manual of (Zhou Ligong Zhang Huazhu Beijing space flight and aviation university press) and " the basis study course of ARM embedded system " books such as (Zhou Ligong work Beijing space flight and aviation university press) or ARM company and PHILIPS company related chip.
Provided the wiring diagram of D/A chip and peripheral circuit thereof among Fig. 3, Fig. 4 and Fig. 5.
Clearly, this is the standard application form of a DAC D/A switch circuit, wherein the U1 among Fig. 3, U12 can select TMS320 series or the identical or close integrated circuit (IC) chip of function with it for use, the optional TPS733X of U2～U5, U14～U17 series or the identical or close integrated circuit (IC) chip of function with it, U7A～U7E among Fig. 4 is conventional LM358 series amplifier chip, U18, U26 select X1226 series or the identical or close integrated circuit (IC) chip of function with it for use, the optional SN65HY family chip of U19, U20 is the AD77 series D/A switch circuit of a standard among Fig. 5.
Based on D/A converting circuit also is prior art, so its concrete principle of work, pin definitions, Interface Matching and concrete signal flow to, no longer carefully states at this.
The purpose that the DAC circuit is set is the digital command that host computer is sent, and changes into the analog quantity control signal that power supply generation/output circuit can be discerned/accept.
Provided the wiring diagram of DSP chip and peripheral circuit thereof among Fig. 6.
Obviously, this is DSP (Digital Signal Processing, the digital signal processing) application circuit of a standard of comparison, and its master chip U9A can select the integrated circuit (IC) chip of TMS320 series, C5XXX series or C6XXX series for use, all the other no specific (special) requirements.
DSP also is a kind of flush bonding processor, and it can finish the function of single-chip microcomputer fully, and both unique important differences are that DSP supports " taking advantage of-Jia " computing of single clock cycle.This almost is a common characteristic of the dsp chip of all producers.
A MAC instruction all can be arranged in the instruction set of nearly all dsp processor, and this instruction can be taken out two operands and be multiplied each other from RAM, be added to then in the totalizer, and all these operations are all finished in a clock period.The processor that has such instruction has just possessed the DSP function.
The purpose of DSP is set, it is simulating signal " function to indicate " with DAC output, be similar to and try to achieve sin (x) by add this polynomial expression of (MAC) command calculations with taking advantage of, synthetic (surplus) string ripple just is to control the output characteristics of four phase voltage alternating current-direct current generation/output circuits.
Fig. 7 is the wiring diagram of blow-up DC voltage/current generation/output circuit, and the wherein switching of K2, K3 contact makes the output of U1, U2 change, and finally embodies its output U1
+And/or U2
+Variation on amplitude (being voltage) and frequency.
Because this is the standard application circuit of this area, those skilled in the art is appreciated that its element formation, annexation and principle of work fully, so no longer carefully state.
U1 wherein, U2 select for use the conventional amplifier chip of LM358 series to get final product.
Fig. 8, Fig. 9 and Figure 10 are the wiring diagrams of four phase voltage alternating current-direct current generation/output circuits.
At first the voltage power amplifier among Fig. 8 carries out the symmetric power amplification with the output signal of DSP, and export an analog signals, obtain the control signal waveform of needs, by quadruplet single channel voltage control circuit as shown in figure 10, be combined into a four-way voltage output control module, and by corresponding relays contact combination circuit (not shown), switch the output voltage values of transformer among Fig. 9, control four phase voltage value and the needed frequency of four phase voltage power amplifiers output.
In fact, this part circuit module is based on the basis of single channel voltage/current generation/output unit, by controlling its each passage phase differential of control signal each other, reach the purpose that produces three-phase AC/DC power supply with single phase poaer supply, be check voltage (single-phase, alternate or three-phase low pressure, pressure, overvoltage, differential pressure etc. are arranged) relay and frequency (single-phase or three-phase) relay, the signal source and/or the working power of standard is provided.
Each integrated circuit adopts LM358 series amplifier chip to get final product other no specific (special) requirements among the figure.
Because the utility model has adopted technique scheme, advantage with multi-purpose machine, increased the output of 4 passage alternating voltages newly, output voltage, frequency adjustable, function with check voltage (single-phase, alternate or three-phase low pressure, pressure, overvoltage, differential pressure etc. are arranged) relay and frequency (single-phase or three-phase) relay can satisfy the requirement of all kinds of single-phase, three-phase frequency protections of check; Only need carry a check meter and just can finish greatly and check by the computer line protective device of cycle is arranged, realize same work is reduced the goal of the invention of artificial/increase efficient check quick-break electric current.
In actual application, the enforcement of the technical program, especially in the test/maintenance work for the GPF (General Protection False system of 35KV system, beneficial effect is fairly obvious.
The utility model can be widely used in the verification field of power system relay protection device.
Claims (8)
1. a Test Device for Relay Protection comprises single-phase voltage/electric current output module, it is characterized in that:
Also be provided with four phase voltage output modules, ARM micro treatment module, DAC D/A switch module, DSP digital signal processing module and communication module;
Its single-phase voltage/electric current output module is connected with communication module through the ARM micro treatment module;
Its four phase voltages output module is connected with communication module through DAC D/A switch module, DSP digital signal processing module;
The corresponding connection of communication module/port of its communication module and host computer;
In host computer, be provided with corresponding four phase voltage module controls softwares, electric voltage frequency module controls software and blow-up DC voltage/current module controls software.
2. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described single-phase voltage/electric current output module is a blow-up DC voltage/current generation/output circuit.
3. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described four phase voltage output modules are four-way combined-voltage generation/output circuits.
4. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described ARM micro treatment module comprises risc processor chip and peripheral circuit thereof.
5. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described DAC D/A switch module comprises D/A chip and peripheral circuit thereof.
6. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described DSP digital signal processing module comprises DSP chip and peripheral circuit thereof.
7. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described communication module comprises RS-232 interface circuit and/or usb circuit.
8. according to the described Test Device for Relay Protection of claim 1, it is characterized in that described host computer is PC, industrial computer or embedded computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200777518U CN201514448U (en) | 2009-07-02 | 2009-07-02 | Integrated testing device of relay protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200777518U CN201514448U (en) | 2009-07-02 | 2009-07-02 | Integrated testing device of relay protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514448U true CN201514448U (en) | 2010-06-23 |
Family
ID=42485861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200777518U Expired - Lifetime CN201514448U (en) | 2009-07-02 | 2009-07-02 | Integrated testing device of relay protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514448U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004202A (en) * | 2010-12-28 | 2011-04-06 | 扬州博电电气科技有限公司 | Microcomputer relay protection tester |
| CN102998648A (en) * | 2012-12-13 | 2013-03-27 | 湖南省电力公司科学研究院 | Multifunctional electric meter for alternating and direct currents |
| CN103176469A (en) * | 2011-12-23 | 2013-06-26 | 珠海格力电器股份有限公司 | Testing device for anti-phase protectors |
| CN103869243A (en) * | 2014-04-10 | 2014-06-18 | 国家电网公司 | Low-voltage microcomputer protection and monitoring device operation board relay intelligent calibration method |
| CN103884982A (en) * | 2014-04-10 | 2014-06-25 | 国家电网公司 | Intelligent calibration system of operating panel relay of low-voltage microcomputer protection and monitoring device |
| CN104101790A (en) * | 2013-04-11 | 2014-10-15 | 云南电网公司曲靖供电局 | Relay protection AC sampling test system |
| CN107367656A (en) * | 2017-08-09 | 2017-11-21 | 武汉市长江电气发展有限公司 | The special verification simulation device of subway direct current protecting and its verification simulation method |
-
2009
- 2009-07-02 CN CN2009200777518U patent/CN201514448U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004202A (en) * | 2010-12-28 | 2011-04-06 | 扬州博电电气科技有限公司 | Microcomputer relay protection tester |
| CN103176469A (en) * | 2011-12-23 | 2013-06-26 | 珠海格力电器股份有限公司 | Testing device for anti-phase protectors |
| CN103176469B (en) * | 2011-12-23 | 2015-07-22 | 珠海格力电器股份有限公司 | Testing device for anti-phase protectors |
| CN102998648A (en) * | 2012-12-13 | 2013-03-27 | 湖南省电力公司科学研究院 | Multifunctional electric meter for alternating and direct currents |
| CN102998648B (en) * | 2012-12-13 | 2015-07-08 | 湖南省电力公司科学研究院 | Multifunctional electric meter for alternating and direct currents |
| CN104101790A (en) * | 2013-04-11 | 2014-10-15 | 云南电网公司曲靖供电局 | Relay protection AC sampling test system |
| CN104101790B (en) * | 2013-04-11 | 2017-07-11 | 云南电网公司曲靖供电局 | A kind of relay protection AC sampling test system |
| CN103869243A (en) * | 2014-04-10 | 2014-06-18 | 国家电网公司 | Low-voltage microcomputer protection and monitoring device operation board relay intelligent calibration method |
| CN103884982A (en) * | 2014-04-10 | 2014-06-25 | 国家电网公司 | Intelligent calibration system of operating panel relay of low-voltage microcomputer protection and monitoring device |
| CN103869243B (en) * | 2014-04-10 | 2016-08-17 | 国家电网公司 | Low pressure microcomputer protecting controller operation panel relay intelligent method of calibration |
| CN107367656A (en) * | 2017-08-09 | 2017-11-21 | 武汉市长江电气发展有限公司 | The special verification simulation device of subway direct current protecting and its verification simulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201514448U (en) | Integrated testing device of relay protection | |
| CN102332709B (en) | Equivalent high-voltage direct-current transmission direct-current protection digital simulation method and system | |
| CN202351412U (en) | DC power supply module intelligent detecting system | |
| CN101793931B (en) | High-pressure transducer testing system | |
| CN204439747U (en) | A kind of pick-up unit of electric system harmonic inhabitation functional device | |
| CN201654154U (en) | Multifunctional relay protection test simulation device | |
| CN104298127A (en) | Micro-grid semi-digital semi-physical real-time simulation system based on RT-LAB | |
| CN108535602B (en) | Automatic voltage sag test platform | |
| CN102944770A (en) | Intelligent testing system of IGBT (Insulated Gate Bipolar Translator) and drive combined module and testing method thereof | |
| CN201935973U (en) | Integrative test device of electric test of transformer | |
| CN201812010U (en) | Comprehensive testing device for power load management terminal | |
| CN103728510B (en) | Excitation unit on-site test system and method | |
| CN203422426U (en) | Universal comprehensive automatic test system of airborne computer of civilian airliner | |
| CN103023046B (en) | Based on the operating passing zero filtering reactive power compensator that dsp chip controls | |
| CN201707433U (en) | Intelligent controller characteristic test instrument | |
| CN102565562A (en) | Comprehensive testing device for electrical test of transformer | |
| CN204270144U (en) | A kind of hydrogovernor simulation testing device based on dsp system | |
| CN103323808A (en) | Simple faulted electric energy meter test method and device | |
| CN202093088U (en) | Electrical parameter measuring device | |
| CN200979589Y (en) | A middle-high power motor test platform system | |
| CN103323668B (en) | Spacecraft power source controller bus electromagnetic compatibility conducted emission frequency domain testing method | |
| CN201314936Y (en) | Exit logic comprehensive tester for relay protector | |
| CN201274451Y (en) | Analogue electric power for four quadrant electric grid | |
| CN203149057U (en) | A flexible DC power distribution network DC bus successive fault synchronous testing device | |
| CN101345485A (en) | Simulation power supply of four-quadrant electric network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER CORP. Free format text: FORMER OWNER: SHANGHAI ULTRA-HV TRANSMISSION + DISTRIBUTION COMPANY, SHANGHAI ELECTRIC POWER C Effective date: 20110519 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200063 NO. 600, WUNING ROAD, PUTUO DISTRICT, SHANGHAI TO: 200122 NO. 1122, YUANSHEN ROAD, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110519 Address after: 200122, 1122 deep road, Shanghai Patentee after: Shanghai Electric Power Corporation Address before: 200063 No. 600, Wuning Road, Shanghai, Putuo District Patentee before: Shanghai Ultra-HV Transmission & Distribution Company, Shanghai Electric Power C |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |