CN106199121A - A kind of capacitance type potential transformer for transient overvoltage monitoring system - Google Patents
A kind of capacitance type potential transformer for transient overvoltage monitoring system Download PDFInfo
- Publication number
- CN106199121A CN106199121A CN201610533651.6A CN201610533651A CN106199121A CN 106199121 A CN106199121 A CN 106199121A CN 201610533651 A CN201610533651 A CN 201610533651A CN 106199121 A CN106199121 A CN 106199121A
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- voltage
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- monitoring system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
Abstract
The present invention relates to a kind of capacitance type potential transformer for transient overvoltage monitoring system, including high-voltage capacitance, middle voltage capacitance, intermediate transformer, transient over-voltage monitoring unit, grounding switch, compensation reactor and the first spark gap, one end of described high-voltage capacitance connects electrical network, the other end connect respectively in one end of armature winding in one end of voltage capacitance and intermediate transformer, the other end of medium pressure electric capacity connects one end of transient over-voltage monitoring unit and one end of compensation reactor respectively, in described intermediate transformer, the other end of armature winding connects the other end and one end of the first spark gap of compensation reactor respectively, the other end of described transient over-voltage monitoring unit and the equal ground connection of the other end of the first spark gap, described grounding switch is connected in parallel on the two ends of transient over-voltage monitoring unit.Compared with prior art, the present invention has the advantages such as operating frequency is high, measure data precision is high, applied widely.
Description
Technical field
The present invention relates to electrical engineering field, especially relate to a kind of capacitive battery for transient overvoltage monitoring system
Pressure transformer.
Background technology
Electrical network transient process is the important sign of operation of power networks state, currently for transient overvoltage (thunder and lightning in electrical network
Ripple, operation ripple overvoltage), the most still lack effective measurement or monitoring means.For newly-built equipment, domestic only part electricity
Unit of force carries out the test of switching overvoltage before formally putting into operation to 500kV system, is usually switching nonloaded line, main transformer pressure
Transient measuring is carried out, as the charged examination to new equipment when device, low tension reactor or capacitor.Abroad favorably use optical fiber technology
The report being monitored.
For running equipment, the GPF (General Protection False recording equipment installed at present can only record power-frequency overvoltage information.Current
Dispatching monitor and control system, intellectual monitoring and early warning system and electrical network wide area real-time dynamic monitoring system mainly moving from whole electrical network
State and statically stable angle, monitor in real time to operation of power networks characteristic quantity, and then the stabilization of power grids shape of prediction future time instance
State, and system unstable factor is produced early warning, the stable operation of power system has been ensured from whole electrical network angle.But owing to being
System total capacity restriction, the sample frequency of equipment will not be the highest, it addition, be limited to the Frequency Response of sample devices, at present these
Transient state process of electric power system all can not effectively be monitored by the system monitoring systems such as Dispatching monitor and control system, therefore, and can not be right
The running status of power system carries out comprehensive monitoring.
It is therefore desirable to provide a kind of capacitance type potential transformer for transient overvoltage monitoring system, adapt to Intelligent electric
The information-based functional requirement with automatization of net, meets overvoltage and the requirement of Insulation Coordination technology development.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of the most electric for transient state
The capacitance type potential transformer of pressure monitoring system, has the advantages such as operating frequency is high, measure data precision is high, applied widely.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of for transient overvoltage monitoring system capacitance type potential transformer, including high-voltage capacitance, middle voltage capacitance, in
Between transformator, transient over-voltage monitoring unit, grounding switch, compensation reactor and the first spark gap, the one of described high-voltage capacitance
End connects electrical network, the other end connect respectively in one end of armature winding, medium pressure in one end of voltage capacitance and intermediate transformer
The other end of electric capacity connects one end of transient over-voltage monitoring unit and one end of compensation reactor, described intermediate transformer respectively
The other end of middle armature winding connects the other end and one end of the first spark gap of compensation reactor, described transient overvoltage respectively
The other end of monitoring means and the equal ground connection of the other end of the first spark gap, it is single that described grounding switch is connected in parallel on transient overvoltage monitoring
The two ends of unit.
Also include that the second spark gap, described second spark gap are connected in parallel on the two ends of transient over-voltage monitoring unit.
Described compensation reactor is the adjustable resistor of reactance value.
Also include that antivibrator, described antivibrator are located in intermediate transformer on secondary windings.
Also include that portable protective gaps, described portable protective gaps are connected in parallel on the two ends of transient over-voltage monitoring unit.
Described transient over-voltage monitoring unit is made up of multiple noninductive capacity cells parallel with one another, multiple noninductive electric capacity unit
Part presses coaxial circumference structural arrangement.
The plurality of noninductive capacity cell be respectively arranged at two ends with a disc type binding post, each disc type binding post
All including dielectric disc, multiple conduction fan blades, ribs of the fan, cylinder, driven gear and binding post, the plurality of conduction fan blades is respectively
It is located on ribs of the fan formation covering of the fan, the side that each conduction fan blades contacts with noninductive capacity cell is embedded with the bevelled conduction of band
Block, is provided with spring between described conducting block and conduction fan blades, and the inclined-plane of conducting block is identical towards the expansion direction with ribs of the fan, described
Ribs of the fan and conduction fan blades are close to be arranged on the end face of dielectric disc, and described binding post is located in the turning end of ribs of the fan, and
On through dielectric disc center to other end, described driven gear is located on binding post, and the expansion link of described cylinder is provided with
Tooth bar, described tooth bar is meshed with driven gear, and described cylinder is located on the other end of dielectric disc；
When increasing the quantity accessing noninductive capacity cell, the expansion link of cylinder stretches out, and drives driven gear to rotate, ribs of the fan
Rotating, and then launch conduction fan blades successively, conducting block ejects under the action of the spring, and contacts noninductive capacity cell.
Described binding post includes rotating bar and wiring end cover, and one end of described rotation bar is located in the turning end of ribs of the fan,
Described wiring end cover lid sets on the other end rotating bar, and is slidably connected with the end rotating bar, and wiring end cover holding position is not
Dynamic.
It is provided with ball between described wiring end cover and the end rotating bar.
Described tooth bar and driven gear are made by insulant.
Compared with prior art, the invention have the advantages that
1) operating frequency is high, and measure data precision is high: not only have the function of conventional CVT (capacitance type potential transformer),
As for voltage measurement and used for relay protection, it is also possible to for measuring the online harmonic wave of high-pressure unit extra-high voltage and to line voltage
Waveform carries out real-time monitored and measurement, arranges the first spark gap and the second spark gap, can be effectively prevented what overvoltage caused
Damage, protect transient over-voltage monitoring unit, be particularly suitable as in transient overvoltage monitoring system for coupling 500kV transmission of electricity
The sensor of line over-voltage.
2) applied widely: disc type binding post is set, use sector structure, it is achieved noninductive capacity cell accesses CVT
The Automatic adjusument of quantity, uses cylinder, dielectric disc, can be effectively prevented frictional static, it is ensured that transient overvoltage is monitored
Unit can long-time stable work.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of capacitance type potential transformer of the present invention；
Fig. 2 is the plan structure schematic diagram of disc type binding post；
Fig. 3 be disc type binding post look up structural representation；
Fig. 4 is transient over-voltage monitoring unit and standard impulse potentiometer exemplary waveform diagram under operating impulse voltage；
Fig. 5 is transient over-voltage monitoring unit and standard impulse potentiometer typical frequency spectrum figure under operating impulse voltage；
Fig. 6 is transient over-voltage monitoring unit and standard impulse potentiometer exemplary waveform diagram under lightning impulse voltage；
Fig. 7 is transient over-voltage monitoring unit and standard impulse potentiometer typical frequency spectrum figure under lightning impulse voltage；
Fig. 8 is the structural representation of transient overvoltage monitoring system.
In figure: 1, electrical network, 2, capacitance type potential transformer, 3, transmission cable, 4, protector, 5, communications optical cable, 6, transient state
Voltage collector, 7, communication cable, 8, industrial computer, 201, dielectric disc, 202, conduction fan blades, 203, ribs of the fan, 204, cylinder,
205, driven gear, 206, binding post, 207, conducting block, C1, high-voltage capacitance, C2, middle voltage capacitance, C3, transient overvoltage are supervised
Survey unit, T, intermediate transformer, K, grounding switch, L, compensation reactor, ZD, antivibrator, P, portable protective gaps, BL1, first take shelter from the thunder
Device, BL2, the second spark gap.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implement, give detailed embodiment and concrete operating process, but protection scope of the present invention be not limited to
Following embodiment.
As it is shown in figure 1, a kind of capacitance type potential transformer 2 for transient overvoltage monitoring system, including high-voltage capacitance
C1, middle voltage capacitance C2, intermediate transformer T, transient over-voltage monitoring unit C3, grounding switch K, compensation reactor L, antivibrator
ZD, portable protective gaps P, the first spark gap BL1 and the second spark gap BL2, one end of high-voltage capacitance C1 connects electrical network 1, and the other end divides
Not Lian Jie in one end of armature winding in one end of voltage capacitance C2 and intermediate transformer T, the other end of middle voltage capacitance C2 connects respectively
Connect one end and one end of compensation reactor L of transient over-voltage monitoring unit C3, the other end of armature winding in intermediate transformer T
Connect the other end and one end of the first spark gap BL1, the other end of transient over-voltage monitoring unit C3 of compensation reactor L respectively
It is connected in parallel on respectively with the equal ground connection of the other end of the first spark gap BL1, grounding switch K, portable protective gaps P and the second spark gap BL2
The two ends of transient over-voltage monitoring unit C3, antivibrator ZD is located in intermediate transformer T on secondary windings, wherein, compensating reactance
Device L is the adjustable resistor of reactance value, and the equivalent capacitance of the reactance value of compensation reactor L and capacitance type potential transformer 2 is at volume
Determine the capacitive reactance under frequency equal, in order to make to obtain between primary voltage and secondary voltage correct under different secondary loads
Phase place and no-load voltage ratio.In Fig. 1, N is the low-pressure end of middle voltage capacitance C2, and 1a, 1n, 2a, 2n, da1, da2, dan are intermediate transformer T's
Secondary windings outfan.
Transient over-voltage monitoring unit C3 is made up of multiple noninductive capacity cells parallel with one another, multiple noninductive capacity cells
By coaxial circumference structural arrangement, the high-pressure side of transient over-voltage monitoring unit C3 and voltage capacitance C2 low-pressure end N string in CVT inside
Connection, ground terminal copper sheet or copper strips reliable ground, measurement terminal uses modular connection to be sent by voltage signal based on coaxial cable
To digital collection instrument.
Multiple noninductive capacity cells be respectively arranged at two ends with a disc type binding post 206, as shown in Figures 2 and 3, each
Disc type binding post 206 all includes dielectric disc 201, multiple conduction fan blades 202, ribs of the fan 203, cylinder 204, driven gear
205 and binding post 206, multiple conduction fan blades 202 are respectively arranged on ribs of the fan 203 formation covering of the fan, each conduction fan blades 202 and nothing
It is embedded with the bevelled conducting block 207 of band on the side of sense capacity cell contact, sets between conducting block 207 and conduction fan blades 202
Having spring, the inclined-plane of conducting block 207 is towards identical with the expansion direction of ribs of the fan 203, and ribs of the fan 203 and conduction fan blades 202 are close to set
Putting on the end face of dielectric disc 201, binding post 206 is located in the turning end of ribs of the fan 203, and through dielectric disc 201
On center to other end, driven gear 205 is located on binding post 206, and the expansion link of cylinder 204 is provided with tooth bar, tooth bar with
Driven gear 205 is meshed, and cylinder 204 is located on the other end of dielectric disc 201.
Binding post 206 includes rotating bar and wiring end cover, and the one end rotating bar is located in the turning end of ribs of the fan 203, connects
Line end lid lid sets on the other end rotating bar, and is slidably connected with the end rotating bar, and wiring end cover holding position is motionless.
Be provided with ball between wiring end cover and the end rotating bar, keep binding post 206 and external transmission cable 3 it
Between position stable, and frictional force is little, weares and teares little.Tooth bar and driven gear 205 are made by insulant, effectively prevent
Frictional static.
When if desired strengthening the capacitance of transient over-voltage monitoring unit C3, then increase the number accessing noninductive capacity cell
Amount, the expansion link of cylinder 204 stretches out, and drives driven gear 205 to rotate, and ribs of the fan 203 rotates and launches, and then has internal layer to outward
Layer launches conduction fan blades 202 successively, and conducting block 207 ejects under the action of the spring, and contacts noninductive capacity cell.
When if desired reducing the capacitance of transient over-voltage monitoring unit C3, then reduce the number accessing noninductive capacity cell
Amount, the expansion link retraction of cylinder 204, and drive driven gear 205 to rotate, ribs of the fan 203 rotates and regains, and then has outer layer to interior
Layer regains conduction fan blades 202 successively, and the conducting block 207 in each conduction fan blades 202 receives the conduction fan blades 202 of adjacent outward layer
Extruding, spring-compressed, conducting block 207 leaves noninductive capacity cell.
Fig. 4-7 shows comparison of wave shape when one embodiment of the invention and standard impulse potentiometer are measured simultaneously.Test knot
Fruit come from embodiment based on common 500kV capacitance type potential transformer reequip after, in height scolds hall, carry out surge voltage examination
Test performance verification to obtain.In figure, amplitude is that numerical value measured by standard impulse potentiometer, and low amplitude value is that monitoring means measures numerical value.
As shown in Figure 8, transient overvoltage monitoring system, any shape occurred on Operation of Electric Systems equipment can be built
The transient voltage of formula, including power-frequency overvoltage, switching overvoltage and lightning surge etc..Transient overvoltage monitoring system includes electricity
Appearance formula voltage transformer 2, protector 4, transient voltage harvester 6 and industrial computer 8, capacitance type potential transformer 2 is (defeated with electrical network 1
Electric line or bus) connect, capacitance type potential transformer 2 is connected with protector 4 by transmission cable 3, and protector 4 is by communication
Optical cable 5 is connected with transient voltage harvester 6, and transient voltage harvester 6 is connected with industrial computer 8 by communication cable 7.Transient state is the most electric
Pressure on-line monitoring is through partial pressure sensor, by means of Signal Collection Technology, monitors the voltage disturbance of network system, note in real time
Waveform before and after the amplitude of each phase voltage, fault and various parameter when record and preservation transient overvoltage occur.And have at signal
Reason and parameter extraction, apply and analyze (report to the police, the inquiry of historical data and statistics etc.) function.
The capacitance type potential transformer built-in transient over-voltage monitoring unit C3 of the present invention, itself and high-voltage capacitance C1 and middle pressure
Electric capacity C2 constitutes capacitor voltage potentiometer, thus obtains accurate transient overvoltage waveform also based on this monitoring means C3
The measurement of power-frequency voltage signal can be taken into account simultaneously.
Claims (10)
1. for a capacitance type potential transformer for transient overvoltage monitoring system, including high-voltage capacitance, middle voltage capacitance, centre
Transformator, transient over-voltage monitoring unit, grounding switch and compensation reactor, it is characterised in that also include the first spark gap, institute
The one end stating high-voltage capacitance connects electrical network, the other end connect respectively in armature winding in one end of voltage capacitance and intermediate transformer
One end, the other end of medium pressure electric capacity connects one end of transient over-voltage monitoring unit and one end of compensation reactor respectively,
In described intermediate transformer, the other end of armature winding connects the other end and one end of the first spark gap of compensation reactor respectively,
The other end of described transient over-voltage monitoring unit and the equal ground connection of the other end of the first spark gap, described grounding switch is connected in parallel on temporarily
The two ends of state over-voltage monitoring unit.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 1, its feature
It is, also includes that the second spark gap, described second spark gap are connected in parallel on the two ends of transient over-voltage monitoring unit.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 1, its feature
Being, described compensation reactor is the adjustable resistor of reactance value.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 1, its feature
It is, also includes that antivibrator, described antivibrator are located in intermediate transformer on secondary windings.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 1, its feature
It is, also includes that portable protective gaps, described portable protective gaps are connected in parallel on the two ends of transient over-voltage monitoring unit.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 1, its feature
Being, described transient over-voltage monitoring unit is made up of multiple noninductive capacity cells parallel with one another, multiple noninductive capacity cells
By coaxial circumference structural arrangement.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 6, its feature
Be, the plurality of noninductive capacity cell be respectively arranged at two ends with a disc type binding post, each disc type binding post is equal
Including dielectric disc, multiple conduction fan blades, ribs of the fan, cylinder, driven gear and binding post, the plurality of conduction fan blades sets respectively
On ribs of the fan, form covering of the fan, the side that each conduction fan blades contacts with noninductive capacity cell is embedded with the bevelled conduction of band
Block, is provided with spring between described conducting block and conduction fan blades, and the inclined-plane of conducting block is identical towards the expansion direction with ribs of the fan, described
Ribs of the fan and conduction fan blades are close to be arranged on the end face of dielectric disc, and described binding post is located in the turning end of ribs of the fan, and
On through dielectric disc center to other end, described driven gear is located on binding post, and the expansion link of described cylinder is provided with
Tooth bar, described tooth bar is meshed with driven gear, and described cylinder is located on the other end of dielectric disc；
When increasing the quantity accessing noninductive capacity cell, the expansion link of cylinder stretches out, and drives driven gear to rotate, and ribs of the fan turns
Dynamic, and then launch conduction fan blades successively, conducting block ejects under the action of the spring, and contacts noninductive capacity cell.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 7, its feature
Being, described binding post includes rotating bar and wiring end cover, and one end of described rotation bar is located in the turning end of ribs of the fan, described
Wiring end cover lid sets on the other end rotating bar, and is slidably connected with the end rotating bar, and wiring end cover holding position is motionless.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 7, its feature
It is, between described wiring end cover and the end rotating bar, is provided with ball.
A kind of capacitance type potential transformer for transient overvoltage monitoring system the most according to claim 7, its feature
Being, described tooth bar and driven gear are made by insulant.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533651.6A CN106199121B (en) | 2016-07-08 | 2016-07-08 | A kind of capacitance type potential transformer for transient overvoltage monitoring system |
| JP2017564669A JP6547217B2 (en) | 2016-07-08 | 2017-07-07 | Capacitor-type instrument transformer for transient overvoltage monitoring system |
| PCT/CN2017/092280 WO2018006876A1 (en) | 2016-07-08 | 2017-07-07 | Capacitive voltage mutual inductor for transient over-voltage monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533651.6A CN106199121B (en) | 2016-07-08 | 2016-07-08 | A kind of capacitance type potential transformer for transient overvoltage monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106199121A true CN106199121A (en) | 2016-12-07 |
| CN106199121B CN106199121B (en) | 2019-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610533651.6A Active CN106199121B (en) | 2016-07-08 | 2016-07-08 | A kind of capacitance type potential transformer for transient overvoltage monitoring system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6547217B2 (en) |
| CN (1) | CN106199121B (en) |
| WO (1) | WO2018006876A1 (en) |
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| CN106970268A (en) * | 2017-02-28 | 2017-07-21 | 上海交通大学 | Single-phase overhead transmission line of electricity phase voltage method for self-calibrating based on shunt capacitance |
| WO2018006876A1 (en) * | 2016-07-08 | 2018-01-11 | 国网上海市电力公司 | Capacitive voltage mutual inductor for transient over-voltage monitoring system |
| CN111029118A (en) * | 2020-01-16 | 2020-04-17 | 郑州三晖互感器有限公司 | High-voltage electromagnetic voltage proportion standard error compensation method |
| CN112180162A (en) * | 2020-09-27 | 2021-01-05 | 江苏思源赫兹互感器有限公司 | Harmonic detection system based on capacitive voltage transformer |
| CN112285411A (en) * | 2020-10-22 | 2021-01-29 | 国网四川省电力公司电力科学研究院 | CVT nonlinear model, model-based system and method for measuring voltage |
| CN113410035A (en) * | 2021-06-25 | 2021-09-17 | 河北旭辉电气股份有限公司 | Anti-resonance voltage transformer with grounding compensation function based on Y-shaped wiring |
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| WO2019194754A1 (en) * | 2018-04-04 | 2019-10-10 | Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ | Link box with built-in insulator type voltage divider and inductive partial discharge sensor |
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| CN111029118A (en) * | 2020-01-16 | 2020-04-17 | 郑州三晖互感器有限公司 | High-voltage electromagnetic voltage proportion standard error compensation method |
| CN112180162A (en) * | 2020-09-27 | 2021-01-05 | 江苏思源赫兹互感器有限公司 | Harmonic detection system based on capacitive voltage transformer |
| CN112285411A (en) * | 2020-10-22 | 2021-01-29 | 国网四川省电力公司电力科学研究院 | CVT nonlinear model, model-based system and method for measuring voltage |
| CN112285411B (en) * | 2020-10-22 | 2023-05-02 | 国网四川省电力公司电力科学研究院 | CVT nonlinear model, model-based system and method for measuring voltage |
| CN113410035A (en) * | 2021-06-25 | 2021-09-17 | 河北旭辉电气股份有限公司 | Anti-resonance voltage transformer with grounding compensation function based on Y-shaped wiring |
| CN113410035B (en) * | 2021-06-25 | 2023-06-23 | 河北旭辉电气股份有限公司 | Anti-resonance voltage transformer with grounding compensation function based on Y-shaped wiring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106199121B (en) | 2019-03-08 |
| JP2018532249A (en) | 2018-11-01 |
| JP6547217B2 (en) | 2019-07-24 |
| WO2018006876A1 (en) | 2018-01-11 |
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Effective date of registration: 20190430 Address after: 200002 Nanjing East Road, Huangpu District, Huangpu District, Shanghai Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Patentee after: State Grid Shanghai Municipal Electric Power Company Co-patentee after: Shanghai Hengnengtai Enterprise Management Co., Ltd. Co-patentee after: Shanghai University of Electric Power Address before: 200002 Nanjing East Road, Huangpu District, Huangpu District, Shanghai Co-patentee before: East China Electric Power Test & Research Institute Co., Ltd. Patentee before: State Grid Shanghai Municipal Electric Power Company Co-patentee before: Shanghai Sai Pu Le Power Technology Co. Ltd. Co-patentee before: Shanghai University of Electric Power |
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Inventor after: Zhao Dandan Inventor after: Huang Hua Inventor after: Zhao Wenbin Inventor after: Si Wenrong Inventor after: Jin Hang Inventor after: Ye Hongbo Inventor after: Li Jun Inventor after: Zhou Xingxing Inventor after: Zou Jian Inventor before: Zou Jian Inventor before: Ye Hongbo Inventor before: Li Jun Inventor before: Jin Hang Inventor before: Si Wenrong Inventor before: Zhao Wenbin Inventor before: Zhao Dandan Inventor before: Zhou Xingxing Inventor before: Huang Hua |
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Address after: 200002 No. 181 East Nanjing Road, Shanghai, Huangpu District Patentee after: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: EAST CHINA ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Patentee after: SHANGHAI HENGNENGTAI ENTERPRISE MANAGEMENT Co.,Ltd. Patentee after: Shanghai Electric Power University Address before: 200002 No. 181 East Nanjing Road, Shanghai, Huangpu District Patentee before: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: EAST CHINA ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Patentee before: SHANGHAI HENGNENGTAI ENTERPRISE MANAGEMENT Co.,Ltd. Patentee before: SHANGHAI University OF ELECTRIC POWER |
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