CN201859169U - On-line monitoring device for zinc oxide arrester on wireless power transmission line - Google Patents
On-line monitoring device for zinc oxide arrester on wireless power transmission line Download PDFInfo
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- CN201859169U CN201859169U CN2010205879629U CN201020587962U CN201859169U CN 201859169 U CN201859169 U CN 201859169U CN 2010205879629 U CN2010205879629 U CN 2010205879629U CN 201020587962 U CN201020587962 U CN 201020587962U CN 201859169 U CN201859169 U CN 201859169U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 10
- 238000012806 monitoring device Methods 0.000 title abstract description 5
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000007493 shaping process Methods 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 20
- 238000007405 data analysis Methods 0.000 claims description 19
- 238000013480 data collection Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 8
- 229960001296 zinc oxide Drugs 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 230000003750 conditioning effect Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 description 12
- 230000001143 conditioned effect Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses an on-line monitoring device for a zinc oxide arrester on a wireless power transmission line, which comprises a signal conditioning module, a data acquisition and analysis module, a wireless data transmission module and a power supply module, wherein the signal conditioning module is connected with the data acquisition and analysis module and the wireless data transmission module in sequence; the power supply module is respectively connected with the signal conditioning module, the data acquisition and analysis module and the wireless data transmission module. The leakage current and a line-phase voltage signal of the arrester are respectively acquired by a voltage sensor and a current sensor, and the plastic processing of an acquisition signal is finished by the signal conditioning module; then, the acquisition signal is transmitted to the data acquisition and analysis module, and the total leakage current of the arrester, the discharge current resistance component and the accumulative action time of the arrester are analyzed and calculated by a data acquisition and analysis software; and finally, the wireless transmission of monitoring data is finished by the wireless data transmission module. The on-line monitoring device can be used for the remote online monitoring to the gapless zinc oxide arrester on the overhead power transmission line.
Description
Technical field
The utility model belongs to the lightning arrester monitoring technical field, is specifically related to a kind of radio-type transmission line of electricity Zinc-Oxide Arrester on-line monitoring method and device.
Background technology
The on-line monitoring of transmission line of electricity lightning arrester provides effective technical means for the remote monitoring of lightning arrester.The present transmission line of electricity lightning arrester monitoring device that uses, with the microprocessor is the control core, has realized the remote measurement of leakage current of an arrester and action frequency, but has monitored for leakage current, existing monitoring device is only monitored total current, can not realize the measurement of the resistive component of leakage current.
Summary of the invention
The purpose of the utility model patent provides a kind of radio-type transmission line of electricity Zinc-Oxide Arrester on-Line Monitor Device, monitor data such as the resistive component of leakage total current, leakage current of lightning arrester and action frequency simultaneously, and adopt wireless mode to finish data transmission, this method and device can be used for the remote online monitoring of overhead transmission line zero-clearance zinc oxide lightning arrester.
The technical solution of the utility model is achieved in that
Comprise the signal condition module, the data collection and analysis module, wireless data transmission module and power module, wherein the signal condition module successively with data analysis and analysis module, wireless data transmission module joins, power module respectively with the signal condition module, data analysis and analysis module, wireless data transmission module joins, described signal condition module is by three-phase leakage current modulate circuit, B phase leakage current shaping circuit, B phase voltage shaping circuit is formed, wherein, B phase leakage current shaping circuit and B leakage current modulate circuit parallel connection mutually, described three-phase leakage current modulate circuit includes sample circuit, amplitude is adjusted circuit, filtering circuit and amplifying circuit, wherein, sample circuit is adjusted circuit with amplitude successively, filtering circuit and amplifying circuit are connected.
Described B phase leakage current shaping circuit is made up of filtering circuit, shaping circuit and buffer circuit, and wherein, filtering circuit is connected with shaping circuit and buffer circuit successively.
B phase voltage shaping circuit is adjusted circuit, filtering circuit, shaping circuit and buffer circuit by amplitude and is formed, and wherein, amplitude is adjusted circuit and is connected with filtering circuit, shaping circuit and buffer circuit successively.
The utility model is with the existing lightning arrester on-Line Monitor Device following characteristics of having compared:
1. can finish the remote monitoring that lightning arrester leaks total current, the resistive component of leakage current and action frequency simultaneously;
2. adopt the solar photovoltaic power system, can be installed on the open-air overhead transmission line, open-air overhead transmission line lightning arrester is carried out remote monitoring.
Description of drawings
Fig. 1 is leakage conductor leakage current signal and phase voltage signal acquisition principle figure;
Fig. 2 is a radio-type transmission line of electricity Zinc-Oxide Arrester on-Line Monitor Device structural representation of the present utility model;
Fig. 3 is the circuit theory diagrams of sampled signal conditioning module of the present utility model;
Fig. 4 is the software flow pattern of data collection and analysis module of the present utility model.
Among the figure, 1, metal oxide type lightning arrester MOA, 2, the passive ac leakage current sensor of a circle core-theaded type, 3, phase voltage sensor 4, leakage current sampling resistor, 5, phase voltage sampling resistor, 6, the signal condition module, 7, the data collection and analysis module, 8, wireless data transmission module, 9, power module.
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Leakage current of an arrester and phase voltage signal acquisition principle are: utilize the passive ac leakage current sensor 2 of a circle core-theaded type to be enclosed within on the ground wire of metal oxide type lightning arrester MOA, and obtain leakage current corresponding simulating signal by sampling resistor 4, utilize voltage sensor 3 to be installed in B phase circuit below, induce the B phase voltage with the frequency in-phase signal, and obtain B phase line voltage distribution corresponding simulating signal by sampling resistor 5, as shown in Figure 1.
The structure of radio-type transmission line of electricity Zinc-Oxide Arrester on-Line Monitor Device of the present utility model comprises signal condition module 6, data collection and analysis module 7, wireless data transmission module 8 and power module 9 as shown in Figure 2.Wherein, the signal condition module receives three-phase leakage current and B phase voltage simulating signal, after treatment three-phase leakage current conditioned signal, B phase leakage current and B phase voltage reshaping signal is sent into the data collection and analysis module; After the data collection and analysis resume module, become digital signal to be sent to wireless data transmission module data-switching; Wireless data transmission module receives after the data to be sent to be sent into data wireless channel and finishes data and send.
The principle of work of signal condition module of the present utility model as shown in Figure 3, altogether by three-phase leakage current modulate circuit; B phase leakage current shaping circuit; B phase voltage shaping circuit five parts are formed.Wherein, the output signal of three-phase leakage current modulate circuit is respectively U
1, U
2, U
3, its structure is identical with principle of work.Be example mutually with A below, illustrate that its principle of work is as follows: the A phase leakage current I that obtains through current sensor
aAt sampling resistor R
1Leakage current is with the synchronous voltage signal of frequency mutually with A in last generation, and this voltage signal is through R
2With R
3Send into by C after the dividing potential drop
1, C
2And the filtering circuit that LM324 first amplifier is formed carries out Filtering Processing, the harmonic signal more than 3 times and 3 times in the elimination sampled signal; Signal after the Filtering Processing is sent into by R
4, R
5, R
6, R
7, LM324 and TVS
1The signal amplification circuit of forming is nursed one's health signal amplitude in data collection and analysis modules A/D passage acceptable amplitude range by amplifying circuit.
The output signal of B phase leakage current shaping circuit and B phase voltage shaping circuit is respectively U
4, U
5, its principle of work is basic identical, is example with B phase leakage current shaping circuit, illustrates that its principle of work is as follows: B phase leakage current signal is through R
15R
16The amplitude adjustment after send into by C
3, R
8, C
4The filtering electric power of forming carries out filtering, the harmonic signal more than 3 times and 3 times in the elimination sampled signal; Filtered signal is sent into by R
9, R
10, R
11And the shaping circuit of first amplifier of LM358 composition, will exchange the simulating signal shaping and claim with the synchronous square-wave pulse signal of frequency; Square-wave pulse signal is sent into by R
12, TLP181 and R
13The photoelectric isolating circuit of forming realizes square-wave signal being sent into after the electrical isolation of circuit the external interrupt interface of data collection and analysis module.
The principle of work of data collection and analysis module of the present utility model as shown in Figure 4, wherein (a) figure is the main program flow chart of system software, its principle of work is: initialize routine is partly finished work such as systematic parameter, interruption and timer conter are provided with; After each other interruption subroutine is finished collection calculating, master routine carries out validity check to gathering calculated value, if when find gathering calculated value invalid value situation such as wild point, disturbance, super large or extra small value being arranged, invalid value is abandoned, and returns wait and gather calculated value next time.If gather calculated value by the effective value verification, then can utilize three-phase total current value and current/voltage angle values to calculate the current in resistance property value; At last three-phase total current, current in resistance property and action frequency aggregate-value being finished data by router sends.(b) figure is total current collection and action frequency accumulative total interruption subroutine process flow diagram, timer 0 enters to schedule and interrupts inlet, gather the three-phase full current signal by three road A/D interfaces after the parameter that keeps the scene intact, and calculate three-phase total current value through sampling algorithm; When finding that certain phase total current value generation transition and absolute value surpass setting action threshold value, think that then this phase lightning arrester moves, thereby this phase lightning arrester action frequency totalizer is finished accumulation calculating; If the total current value in normal range, is then recovering to withdraw from interrupt routine behind the on-site parameters.(c) figure is b phase current conditioned signal U
4The microprocessor external interrupt 0 service routine process flow diagram that inserts is worked as U
4Enter during the signal negative edge and interrupt inlet, read the count value of microprocessor counter 1 after the parameter that keeps the scene intact, if enter program for the first time, then count value is that invalid value abandons, if not enter program for the first time, then this count value is U
4Pairing microprocessor count value of time between adjacent twice negative edge of signal; According to this count value and microprocessor count frequency, can calculate U
4The cycle of signal and frequency; Enabling counting device 2 after execution cycle and the frequency computation part; Recover to return master routine behind the on-site parameters.(c) figure is b phase voltage conditioned signal U
5The microprocessor external interrupt 1 service routine process flow diagram that inserts is worked as U
5Enter during the signal negative edge and interrupt inlet, stop counter 2 after the parameter that keeps the scene intact, read its count value, this count value is b phase current conditioned signal U
4With b phase voltage conditioned signal U
5Pairing microprocessor count value of time between the adjacent negative edge can calculate b phase current conditioned signal U by this count value and microprocessor technology frequency
4With b phase voltage conditioned signal U
5Time between the adjacent negative edge is again in conjunction with U
4The cycle of signal or frequency values can calculate current regulating signal U
4Leading b phase voltage conditioned signal U
5The pairing electrical angle of phase place; Reset counter 2 after the phasing degree is calculated and finished is so that the collection of next cycle is calculated; Recover on-the-spot at last and return master routine.
The technical solution adopted in the utility model is, by the leakage current and the circuit phase voltage signal of voltage and current sensor acquisition lightning arrester respectively, and handles by the shaping that the signal condition module is finished acquired signal; Send into data acquisition and analysis module then, by data acquisition and analysis software, analysis meter is calculated the accumulative total action frequency of leakage total current, the resistive component of earial drainage electric current and the lightning arrester of lightning arrester; Finish the wireless transmission of Monitoring Data at last by wireless transport module.
Three-phase leakage current modulate circuit structure is identical, and be that example illustrates that the structure of foregoing circuit is as follows mutually with A: signal conversion circuit is made up of first resistance; Amplitude is adjusted circuit and is made up of the second and the 3rd resistance; Filtering circuit is made up of first amplifier among first electric capacity, second electric capacity, the four high guaily unit integrated circuit LM324; Amplifying circuit is made up of second amplifier and first Transient Suppression Diode among the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the four high guaily unit integrated circuit LM324.The annexation of each circuit component is: an end of first resistance directly and the earth join, the other end successively with second resistance, the first amplifier in-phase end of the 3rd resistance and four high guaily unit integrated circuit LM324 joins, the bypass of second resistance and the 3rd resistance successively with second electric capacity, the output terminal of first amplifier of four high guaily unit integrated circuit LM324 joins, the bypass of the in-phase end of first amplifier of the 3rd resistance and four high guaily unit integrated circuit LM324 successively with first electric capacity, the earth joins, and the output terminal of first amplifier of the end of oppisite phase of first amplifier of four high guaily unit integrated circuit LM324 and four high guaily unit integrated circuit LM324 joins.The output terminal of one end of the 4th resistance and four high guaily unit integrated circuit LM324 first amplifier joins, the end of oppisite phase of second amplifier of the other end and four high guaily unit integrated circuit LM324 joins, the bypass of the end of oppisite phase of second amplifier of the 4th resistance and four high guaily unit integrated circuit LM324 respectively with the 6th resistance, the 7th resistance, the output terminal of second amplifier of four high guaily unit integrated circuit LM324 joins, the output terminal of second amplifier of four high guaily unit integrated circuit LM324 and the A/D translation interface of data collection and analysis module join, the bypass of the four high guaily unit integrated circuit LM324 second amplifier output terminal and data collection and analysis modules A/D translation interface is joined through the first transient state breakdown diode (TVS1) and the earth, and the in-phase end of second amplifier of four high guaily unit integrated circuit LM324 joins with the 5th resistance and the earth successively.
The structure of B phase leakage current shaping circuit is as follows: filtering circuit is made up of the 3rd electric capacity, the 8th resistance and the 4th electric capacity; Shaping circuit is made up of first amplifier of the 9th resistance, the tenth resistance, the 11 resistance and dual operational amplifier LM358; Buffer circuit is made up of the 12 resistance, optocoupler TLP181 and the 13 resistance.The annexation of each circuit component is: an end and the earth of the 3rd electric capacity join, the other end successively with the 8th resistance, the 9th resistance, the end of oppisite phase of first amplifier of dual operational amplifier LM358 joins, the bypass of the 8th resistance and the 9th resistance is joined with the 4th electric capacity and the earth successively, one end and the earth of the tenth resistance join, the in-phase end of first amplifier of the other end and dual operational amplifier LM358 joins, and the bypass of the first amplifier in-phase end of the tenth resistance and dual operational amplifier LM358 is joined with the output terminal of first amplifier of the 11 resistance and dual operational amplifier LM358 successively.The output terminal of one end of the 12 resistance and first amplifier of dual operational amplifier LM358 joins, the anodal pin of the other end and optocoupler TLP181 input end joins, the negative pole pin ground connection of optocoupler TLP181 input end, the collector and the 3.3V dc power anode of optocoupler TLP181 output terminal join, emitter joins with the 13 resistance and the earth successively, and the bypass of optocoupler TLP181 emitter and the 13 resistance and the interruption input pin 1 of data collection and analysis module join.
The structure of B phase voltage shaping circuit is as follows: amplitude is adjusted circuit and is made up of the 28 resistance and the 29 resistance; Filtering circuit is made up of the 9th electric capacity, the 30 resistance and the tenth electric capacity; Shaping circuit is made up of second amplifier of the 31 resistance, the 32 resistance, the 33 resistance and dual operational amplifier LM358; Buffer circuit is made up of the 34 resistance, optocoupler TLP181 and the 35 resistance.The annexation of each circuit component is: an end and the B phase voltage signal of the 28 resistance join, the other end successively with the 30 resistance, the end of oppisite phase of second amplifier of the 31 resistance and dual operational amplifier LM358 joins, the bypass of the 28 resistance and the 30 resistance the 29 resistance and the earth is successively joined, the 9th electric capacity and the 29 resistance are connected in parallel, the bypass of the 30 resistance and the 31 resistance successively with the tenth electric capacity, the in-phase end of second amplifier of the 32 resistance and dual operational amplifier LM358 joins, the bypass and the earth of the tenth electric capacity and the 32 resistance join, and the bypass of the in-phase end of second amplifier of the 32 resistance and dual operational amplifier LM358 is joined with the output terminal of second amplifier of the 33 resistance and dual operational amplifier LM358 successively.The output terminal of one end of the 34 resistance and second amplifier of dual operational amplifier LM358 joins, the anodal pin of the other end and optocoupler TLP181 input end joins, the negative pole pin ground connection of optocoupler TLP181 input end, optocoupler TLP181 emitter joins with ground 35 resistance and the earth successively, and the bypass of optocoupler TLP181 emitter and the 35 resistance and the interruption input pin 2 of data collection and analysis module join.
A/D more than three tunnel gathers the data collection and analysis module and the embedded computer collection plate of two road above external interrupt hardware is formed by comprising.
Wireless data transmission module is made up of the wireless universal digital transmission module that has the serial port input interface.
Power module is made up of the general solar photovoltaic power supply system of suitable capacity and voltage.
Claims (3)
1. radio-type transmission line of electricity Zinc-Oxide Arrester on-Line Monitor Device, it is characterized in that, comprise signal condition module (1), data collection and analysis module (2), wireless data transmission module (3) and power module (4), wherein signal condition module (1) successively with data analysis and analysis module (2), wireless data transmission module (3) joins, power module respectively with signal condition module (1), data analysis and analysis module (2), wireless data transmission module (3) joins, described signal condition module (1) is by three-phase leakage current modulate circuit, B phase leakage current shaping circuit, B phase voltage shaping circuit is formed, wherein, B phase leakage current shaping circuit and B leakage current modulate circuit parallel connection mutually, described three-phase leakage current modulate circuit includes sample circuit, amplitude is adjusted circuit, filtering circuit and amplifying circuit, wherein, sample circuit is adjusted circuit with amplitude successively, filtering circuit and amplifying circuit are connected.
2. device according to claim 1 is characterized in that, described B phase leakage current shaping circuit is made up of filtering circuit, shaping circuit and buffer circuit, and wherein, filtering circuit is connected with shaping circuit and buffer circuit successively.
3. device according to claim 1, it is characterized in that, B phase voltage shaping circuit is adjusted circuit, filtering circuit, shaping circuit and buffer circuit by amplitude and is formed, and wherein, amplitude is adjusted circuit and is connected with filtering circuit, shaping circuit and buffer circuit successively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205879629U CN201859169U (en) | 2010-11-01 | 2010-11-01 | On-line monitoring device for zinc oxide arrester on wireless power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205879629U CN201859169U (en) | 2010-11-01 | 2010-11-01 | On-line monitoring device for zinc oxide arrester on wireless power transmission line |
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| Publication Number | Publication Date |
|---|---|
| CN201859169U true CN201859169U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205879629U Expired - Lifetime CN201859169U (en) | 2010-11-01 | 2010-11-01 | On-line monitoring device for zinc oxide arrester on wireless power transmission line |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323508A (en) * | 2011-09-20 | 2012-01-18 | 河海大学常州校区 | Performance online detection device of induction type oxide arrester |
| CN102914686A (en) * | 2012-11-14 | 2013-02-06 | 天津市翔晟远电力设备实业有限公司 | Detecting system of real-tine load current and zero sequence current of three-phase power transmission and distribution line |
| CN102981038A (en) * | 2012-11-23 | 2013-03-20 | 广东易事特电源股份有限公司 | Simplified sine wave sampling circuit |
| CN102998511A (en) * | 2012-10-29 | 2013-03-27 | 中国电力科学研究院 | Discharge current monitoring device of lightning arrester |
| CN104006830A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Adjusting module for acquiring signal in power transmission line monitoring system |
-
2010
- 2010-11-01 CN CN2010205879629U patent/CN201859169U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323508A (en) * | 2011-09-20 | 2012-01-18 | 河海大学常州校区 | Performance online detection device of induction type oxide arrester |
| CN102998511A (en) * | 2012-10-29 | 2013-03-27 | 中国电力科学研究院 | Discharge current monitoring device of lightning arrester |
| CN102998511B (en) * | 2012-10-29 | 2016-04-20 | 中国电力科学研究院 | A kind of lightning arrester discharge current monitoring device |
| CN102914686A (en) * | 2012-11-14 | 2013-02-06 | 天津市翔晟远电力设备实业有限公司 | Detecting system of real-tine load current and zero sequence current of three-phase power transmission and distribution line |
| CN102981038A (en) * | 2012-11-23 | 2013-03-20 | 广东易事特电源股份有限公司 | Simplified sine wave sampling circuit |
| CN102981038B (en) * | 2012-11-23 | 2016-06-22 | 广东易事特电源股份有限公司 | A kind of sinusoidal wave sample circuit of simplification |
| CN104006830A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Adjusting module for acquiring signal in power transmission line monitoring system |
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| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: TONGCHUAN ELECTRIC POWER BUREAU Effective date: 20140328 Owner name: TONGCHUAN ELECTRIC POWER BUREAU Effective date: 20140328 |
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Free format text: CORRECT: ADDRESS; FROM: 727031 TONGCHUAN, SHAANXI PROVINCE TO: 100761 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140328 Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: Tongchuan Electric Power Bureau Address before: 727031 Tongchuan city of Shaanxi Province District Xianfeng Road No. 21 Patentee before: Tongchuan Electric Power Bureau |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |