[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN203301039U - Composite high-voltage combined electrical appliance and monopole structure thereof - Google Patents

Composite high-voltage combined electrical appliance and monopole structure thereof Download PDF

Info

Publication number
CN203301039U
CN203301039U CN2013203053942U CN201320305394U CN203301039U CN 203301039 U CN203301039 U CN 203301039U CN 2013203053942 U CN2013203053942 U CN 2013203053942U CN 201320305394 U CN201320305394 U CN 201320305394U CN 203301039 U CN203301039 U CN 203301039U
Authority
CN
China
Prior art keywords
circuit breaker
current transformer
unit
combined electrical
cylindrical shell
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
Application number
CN2013203053942U
Other languages
Chinese (zh)
Inventor
李禹生
沙云鹏
袁端磊
王海燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan High General Electric Co Ltd
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN2013203053942U priority Critical patent/CN203301039U/en
Application granted granted Critical
Publication of CN203301039U publication Critical patent/CN203301039U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

The utility model discloses a composite high-voltage combined electrical appliance and a monopole structure thereof. The monopole structure comprises a circuit breaker which does switching-on/off movement along the left-and-right direction, and the upper part of the circuit breaker is vertically and fixedly provided with two current transformers which are arranged left and right at intervals, wherein the upper part of the right-side current transformer is fixedly provided with a linear transmission type three-station isolating and grounding switch which does switching-on/off movement along the left-and-right direction, the right end of the three-station isolating and grounding switch is fixedly provided with a wire inlet bushing unit which leans to the upper right, and the upper part of the left-side current transformer is fixedly provided with a wire outlet bushing unit which leans to the upper left. The layout makes full use of the space and the monopole structure has the advantages of simple structure and reasonable layout; and more importantly, monopoles are vertically installed so that inter-phase transmission connecting parts bear load uniformly, and the mechanical stability is good.

Description

Composite type high-voltage combined electrical apparatus and monopolar configuration thereof
Technical field
The utility model relates to the gas-insulating and fully-enclosed composite type high-voltage combined electrical apparatus of a kind of SF6 and monopolar configuration thereof.
Background technology
Combined electrical apparatus is with two or more High-Voltage Electrical Appliances, form a whole by the requirement of electric power system main electrical scheme, and each High-Voltage Electrical Appliances still keeps the device of former regulation performance, by insulation system, are divided into open type and totally enclosed type.Combined electrical apparatus is generally multipole layout, each one pole is absolute construction, therefore, the High-Voltage Electrical Appliances in single-phase are selected and assembly, and the overall performance (as structure, volume size, alternate transmission synchronism, mechanical stability etc.) of whole combined electrical apparatus is all had a great impact.
A kind of composite type high-voltage combined electrical apparatus is disclosed as Chinese patent CN101989733A, be closed, spaced apart three one poles before and after comprising, each one pole comprises the circuit breaker that is fixed on support, be installed with three spaced apart three station isolation grounding switchs in left and right on circuit breaker, wherein, three station isolation grounding switchs of the rightmost side are by setting firmly to such an extent that the multiple current instrument transformer is installed with sleeve pipe on it, and directly set firmly sleeve pipe on two other three station isolation grounding switch; In three one poles, three three station isolation grounding switchs that middle one pole is corresponding all are installed in the top of circuit breaker, namely vertically install, and three station isolation grounding switchs that the limit phase electrode pair of both sides is answered are installed in the upper lateral part of circuit breaker separately, namely tilt to install.The mode that this combined electrical apparatus adopts limit phase one pole to tilt to install, after the current transformer of assembling high parameter, be subjected to the instrument transformer gravity effect, and larger stress is born at the alternate power transmission shaft coupling of circuit breaker place, affects operational stability and the mechanical endurance of circuit breaker; Simultaneously, this combining form of one pole, adopt three three station isolation grounding switchs, and cost is high, complicated integral structure, and also whole height is higher, can't rationally utilize space.
The utility model content
The purpose of this utility model is to provide a kind of composite type high-voltage combined electrical apparatus that is suitable for the assembling of high parameter current transformer, in order to solve existing combined electrical apparatus, because of limit phase one pole, tilts to install the not high problem of breaker operator stability that causes.
the monopolar configuration of composite type high-voltage combined electrical apparatus of the present utility model adopts following technical scheme: a kind of monopolar configuration of composite type high-voltage combined electrical apparatus, comprise the circuit breaker that moves along the left and right divide-shut brake, the top of circuit breaker vertically is installed with two spaced apart current transformers in left and right, wherein, the top of right side current transformer is installed with straight-line transmitting ejector half three station isolation grounding switchs that move along the left and right divide-shut brake, conduct electricity and be connected with between the moving contact of three station isolation grounding switchs and the fixed contact of circuit breaker, vertically pass the right electric conductor of corresponding current mutual inductor coil, and the right-hand member of three station isolation grounding switchs is installed with towards the entrance bushing unit of upper right side inclination, the inlet wire electric conductor of entrance bushing unit is connected with the isolation fixed contact of three station isolation grounding switchs conduction, the top of left side current transformer is installed with towards the outlet casing tube unit of upper left side inclination, and between the outlet electric conductor of outlet casing tube unit and the moving contact of circuit breaker, conduction is connected with, vertically passes the left electric conductor of corresponding current mutual inductor coil.
Described entrance bushing unit is installed in three stations isolation ground connection by the curved cylindrical shell of inlet wire and opens, the right-hand member that an end of curved cylindrical shell and three stations are isolated the ground connection open pipe by flange removablely be connected, the corresponding end of the other end and entrance bushing unit is connected.
Described outlet casing tube unit is installed on corresponding current transformer by the curved cylindrical shell of outlet, an end of curved cylindrical shell by flange and corresponding current transformer removablely be connected, the corresponding end of the other end and outlet casing tube unit is connected.
Two limit phase one poles in described three-phase one pole into and out of the thread casing unit respectively relatively in the middle of the mode that relies on the corresponding curved cylindrical shell of rotation into and out of the thread casing unit of phase one pole extend out respectively.
Described circuit breaker is pot-type sulfur hexafluoride circuit breaker, has the first disc insulator that both air chamber is separated between the housing of described right side current transformer and the housing of earthed switch, have the second disc insulator that both air chamber is separated between the body of the housing of earthed switch and entrance bushing unit, have the 3rd disc insulator that both air chamber is separated between the body of the housing of left side current transformer and outlet casing tube unit.
composite type high-voltage combined electrical apparatus of the present utility model adopts following technical scheme: a kind of composite type high-voltage combined electrical apparatus, comprise support and be installed on support, along spaced apart three one poles of fore-and-aft direction, one pole comprises the circuit breaker that moves along the left and right divide-shut brake, the top of circuit breaker vertically is installed with two spaced apart current transformers in left and right, wherein, the top of right side current transformer is installed with straight-line transmitting ejector half three station isolation grounding switchs that move along the left and right divide-shut brake, conduct electricity and be connected with between the moving contact of three station isolation grounding switchs and the fixed contact of circuit breaker, vertically pass the right electric conductor of corresponding current mutual inductor coil, and the right-hand member of three station isolation grounding switchs is installed with towards the entrance bushing unit of upper right side inclination, the inlet wire electric conductor of entrance bushing unit is connected with the isolation fixed contact of three station isolation grounding switchs conduction, the top of left side current transformer is installed with towards the outlet casing tube unit of upper left side inclination, and between the outlet electric conductor of outlet casing tube unit and the moving contact of circuit breaker, conduction is connected with, vertically passes the left electric conductor of corresponding current mutual inductor coil.
Described entrance bushing unit is installed in three stations isolation ground connection by the curved cylindrical shell of inlet wire and opens, the right-hand member that an end of curved cylindrical shell and three stations are isolated the ground connection open pipe by flange removablely be connected, the corresponding end of the other end and entrance bushing unit is connected.
Described outlet casing tube unit is installed on corresponding current transformer by the curved cylindrical shell of outlet, an end of curved cylindrical shell by flange and corresponding current transformer removablely be connected, the corresponding end of the other end and outlet casing tube unit is connected.
Two limit phase one poles in described three-phase one pole into and out of the thread casing unit respectively relatively in the middle of the mode that relies on the corresponding curved cylindrical shell of rotation into and out of the thread casing unit of phase one pole extend out respectively.
Described circuit breaker is pot-type sulfur hexafluoride circuit breaker, has the first disc insulator that both air chamber is separated between the housing of described right side current transformer and the housing of earthed switch, have the second disc insulator that both air chamber is separated between the body of the housing of earthed switch and entrance bushing unit, have the 3rd disc insulator that both air chamber is separated between the body of the housing of left side current transformer and outlet casing tube unit.
Adopt the monopolar configuration of said structure, because the top on circuit breaker vertically is installed with two current transformers, be installed with straight-line transmitting ejector half three station isolation grounding switchs on one of them current transformer, and the entrance bushing unit is installed on three station isolation grounding switchs, the outlet casing tube unit is installed on another current transformer, such layout takes full advantage of space, has advantages of simple in structure, rationally distributed; The more important thing is, one pole all adopts the mode of vertical installation, makes the even bearing load of alternate driving coupling parts, good mechanical stability.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of composite type high-voltage combined electrical apparatus of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the cutaway view of the monopolar configuration in Fig. 1.
Embodiment
The embodiment of the utility model composite type high-voltage combined electrical apparatus: as Figure 1-3, comprise support 1, be installed with three on support 1 along the spaced apart one pole of fore-and-aft direction, one pole consists of circuit breaker 2, current transformer 3, earthed switch 6, entrance bushing unit 4 and outlet casing tube unit 8.
Circuit breaker 2 adopts the pot-type sulfur hexafluoride circuit breaker of accumbency, comprise Shell of circuit breaker 21, Shell of circuit breaker 21 inner right side are installed with circuit breaker static contact 22, Shell of circuit breaker 21 inside left left and right guiding movements are equipped with moving contact of breaker 23, the left part of moving contact of breaker 23 is in transmission connection by the first rotating shaft 9 of the first connecting lever and operating mechanism, under the turning effort of the first rotating shaft 9, drive moving contact of breaker 23 side-to-side movements and coordinate the divide-shut brake action that realizes circuit breaker 2 with circuit breaker static contact.
Current transformer 3 has two, is respectively external current mutual inductor, and two current transformers 3 vertically are installed in respectively the top of Shell of circuit breaker 21 and, between left and right every layout, comprise instrument transformer housing 32 and be arranged on the interior coil 31 of instrument transformer housing 32.three station isolation grounding switchs 6 are installed in the top of right side instrument transformer housing, and be straight-line transmitting ejector half three station isolation grounding switchs, comprise switch case 63, the left side of switch case 63 inside is provided with grounding static contact 62, right side is provided with isolation fixed contact 65, be provided with the switch movable contact 64 along the left and right directions guiding movement between grounding static contact 62 and isolation fixed contact 65, the left end of switch movable contact 64 is installed with insulated tension pole 61, the left end of insulated tension pole 61 is in transmission connection by the second rotating shaft 11 of the second connecting lever and operating mechanism, under the turning effort of the second rotating shaft 11, 64 side-to-side movements of driving switch moving contact have also coordinated ground connection or the action of isolation divide-shut brake with grounding static contact 62 and isolation fixed contact 65, also conduct electricity and be connected with the right side electric conductor 14 that vertically passes the right side current mutual inductor coil between switch movable contact 64 and circuit breaker static contact 22.Entrance bushing unit 4 is installed in the right-hand member of three station isolation grounding switchs 6 by the curved cylindrical shell 7 of inlet wire, one end of the curved cylindrical shell 7 of inlet wire and the right-hand member of three station isolation grounding switchs 6 by flange removablely be connected, the corresponding end of the other end and entrance bushing unit 4 is connected, entrance bushing unit 4 is obliquely installed towards upper right side like this; Entrance bushing unit 4 comprises inlet wire body 41 and axially is inserted into inlet wire electric conductor 42 in inlet wire body 41, and inlet wire electric conductor 42 conducts electricity and is connected with isolation fixed contact 65.Outlet casing tube unit 8 is installed on the current transformer of left side by the curved cylindrical shell 5 of outlet, one end of the curved cylindrical shell 5 of outlet by flange and left side current transformer removablely be connected, the corresponding end of the other end and outlet casing tube unit 8 is connected, outlet casing tube unit 8 is obliquely installed towards upper left side like this; Outlet casing tube unit 8 comprises outlet body 82 and axially is inserted into the interior outlet electric conductor 81 of outlet body 82, the left electric conductor 9 of current mutual inductor coil on the left of between outlet electric conductor 81 and moving contact of breaker 23, conduction is connected with and vertically passes.
, as further optimization, be provided with the first disc insulator 12, the first disc insulators 12 between right side instrument transformer housing and switch case 63 air chamber of the air chamber of right side current transformer and three station isolation grounding switchs 6 is separated; Being provided with the second disc insulator 13, the second disc insulators 13 between switch case 63 and inlet wire body 41 separates the air chamber of the air chamber of three station isolation grounding switchs and entrance bushing unit; Being provided with the 3rd disc insulator 10, the three disc insulators 10 between left side instrument transformer housing and outlet body separates the air chamber of the air chamber of left side current transformer and outlet casing tube unit.Like this each independently air chamber all can be filled with the SF6 gas of different pressures, reduced material cost, can also guarantee transportation and while safeguarding disparate modules operate separately, reduced transport difficulty, improved maintenance efficiency; In addition, in the circuit-breaker switching on-off process, the dust that can also the preventer arc control device produces invades in three station isolation grounding switchs.
As further optimization, due to into and out of the curved cylindrical shell of line all by flange respectively with the left side instrument transformer with three station isolation grounding switchs are removable is connected, the entrance bushing unit of two limit phase one poles extends out respectively by the curved cylindrical shell of rotation inlet wire, becomes 30 ° of angles between the entrance bushing unit corresponding with middle one pole; Simultaneously, the outlet casing tube unit of limit phase one pole extends out respectively by the curved cylindrical shell of rotation outlet, also claims 30 ° of angles between the outlet casing tube unit corresponding with middle one pole; Like this outside one pole outwards open certain angle into and out of sleeve pipe, thereby guarantee reliable insulation distance.
The embodiment of the monopolar configuration that the utility model is bright: as Figure 1-4, consistent with the structure of one pole in above-described embodiment, its content does not repeat them here.

Claims (10)

1. the monopolar configuration of a composite type high-voltage combined electrical apparatus, it is characterized in that: comprise the circuit breaker that moves along the left and right divide-shut brake, the top of circuit breaker vertically is installed with two spaced apart current transformers in left and right, wherein, the top of right side current transformer is installed with straight-line transmitting ejector half three station isolation grounding switchs that move along the left and right divide-shut brake, conduct electricity and be connected with between the moving contact of three station isolation grounding switchs and the fixed contact of circuit breaker, vertically pass the right electric conductor of corresponding current mutual inductor coil, and the right-hand member of three station isolation grounding switchs is installed with towards the entrance bushing unit of upper right side inclination, the inlet wire electric conductor of entrance bushing unit is connected with the isolation fixed contact of three station isolation grounding switchs conduction, the top of left side current transformer is installed with towards the outlet casing tube unit of upper left side inclination, and between the outlet electric conductor of outlet casing tube unit and the moving contact of circuit breaker, conduction is connected with, vertically passes the left electric conductor of corresponding current mutual inductor coil.
2. the monopolar configuration of composite type high-voltage combined electrical apparatus according to claim 1, it is characterized in that: described entrance bushing unit is installed in three stations isolation ground connection by the curved cylindrical shell of inlet wire and opens, the right-hand member that an end of curved cylindrical shell and three stations are isolated the ground connection open pipe by flange removablely be connected, the corresponding end of the other end and entrance bushing unit is connected.
3. the monopolar configuration of composite type high-voltage combined electrical apparatus according to claim 2, it is characterized in that: described outlet casing tube unit is installed on corresponding current transformer by the curved cylindrical shell of outlet, an end of curved cylindrical shell by flange and corresponding current transformer removablely be connected, the corresponding end of the other end and outlet casing tube unit is connected.
4. the monopolar configuration of composite type high-voltage combined electrical apparatus according to claim 3 is characterized in that: two limit phase one poles in described three-phase one pole into and out of the thread casing unit respectively relatively in the middle of the mode that relies on the corresponding curved cylindrical shell of rotation into and out of the thread casing unit of phase one pole extend out respectively.
5. the monopolar configuration of according to claim 1-4 described composite type high-voltage combined electrical apparatus of any one, it is characterized in that: described circuit breaker is pot-type sulfur hexafluoride circuit breaker, has the first disc insulator that both air chamber is separated between the housing of described right side current transformer and the housing of earthed switch, have the second disc insulator that both air chamber is separated between the body of the housing of earthed switch and entrance bushing unit, have the 3rd disc insulator that both air chamber is separated between the body of the housing of left side current transformer and outlet casing tube unit.
6. composite type high-voltage combined electrical apparatus, comprise support and be installed on support, along spaced apart three one poles of fore-and-aft direction, it is characterized in that: one pole comprises the circuit breaker that moves along the left and right divide-shut brake, the top of circuit breaker vertically is installed with two spaced apart current transformers in left and right, wherein, the top of right side current transformer is installed with straight-line transmitting ejector half three station isolation grounding switchs that move along the left and right divide-shut brake, conduct electricity and be connected with between the moving contact of three station isolation grounding switchs and the fixed contact of circuit breaker, vertically pass the right electric conductor of corresponding current mutual inductor coil, and the right-hand member of three station isolation grounding switchs is installed with towards the entrance bushing unit of upper right side inclination, the inlet wire electric conductor of entrance bushing unit is connected with the isolation fixed contact of three station isolation grounding switchs conduction, the top of left side current transformer is installed with towards the outlet casing tube unit of upper left side inclination, and between the outlet electric conductor of outlet casing tube unit and the moving contact of circuit breaker, conduction is connected with, vertically passes the left electric conductor of corresponding current mutual inductor coil.
7. composite type high-voltage combined electrical apparatus according to claim 6, it is characterized in that: described entrance bushing unit is installed in three stations isolation ground connection by the curved cylindrical shell of inlet wire and opens, the right-hand member that an end of curved cylindrical shell and three stations are isolated the ground connection open pipe by flange removablely be connected, the corresponding end of the other end and entrance bushing unit is connected.
8. composite type high-voltage combined electrical apparatus according to claim 7, it is characterized in that: described outlet casing tube unit is installed on corresponding current transformer by the curved cylindrical shell of outlet, an end of curved cylindrical shell by flange and corresponding current transformer removablely be connected, the corresponding end of the other end and outlet casing tube unit is connected.
9. composite type high-voltage combined electrical apparatus according to claim 8 is characterized in that: two limit phase one poles in described three-phase one pole into and out of the thread casing unit respectively relatively in the middle of the mode that relies on the corresponding curved cylindrical shell of rotation into and out of the thread casing unit of phase one pole extend out respectively.
10. according to claim 6-9 described composite type high-voltage combined electrical apparatus of any one, it is characterized in that: described circuit breaker is pot-type sulfur hexafluoride circuit breaker, has the first disc insulator that both air chamber is separated between the housing of described right side current transformer and the housing of earthed switch, have the second disc insulator that both air chamber is separated between the body of the housing of earthed switch and entrance bushing unit, have the 3rd disc insulator that both air chamber is separated between the body of the housing of left side current transformer and outlet casing tube unit.
CN2013203053942U 2013-05-30 2013-05-30 Composite high-voltage combined electrical appliance and monopole structure thereof Expired - Lifetime CN203301039U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203053942U CN203301039U (en) 2013-05-30 2013-05-30 Composite high-voltage combined electrical appliance and monopole structure thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203053942U CN203301039U (en) 2013-05-30 2013-05-30 Composite high-voltage combined electrical appliance and monopole structure thereof

Publications (1)

Publication Number Publication Date
CN203301039U true CN203301039U (en) 2013-11-20

Family

ID=49577022

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013203053942U Expired - Lifetime CN203301039U (en) 2013-05-30 2013-05-30 Composite high-voltage combined electrical appliance and monopole structure thereof

Country Status (1)

Country Link
CN (1) CN203301039U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103326272A (en) * 2013-05-30 2013-09-25 国家电网公司 Combined type high-voltage composite apparatus and unipolar structure thereof
CN105428046A (en) * 2015-11-23 2016-03-23 河南平芝高压开关有限公司 GIS externally-mounted current transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103326272A (en) * 2013-05-30 2013-09-25 国家电网公司 Combined type high-voltage composite apparatus and unipolar structure thereof
CN103326272B (en) * 2013-05-30 2016-04-27 国家电网公司 A kind of composite type high-voltage combined electrical apparatus and monopolar configuration thereof
CN105428046A (en) * 2015-11-23 2016-03-23 河南平芝高压开关有限公司 GIS externally-mounted current transformer

Similar Documents

Publication Publication Date Title
EP2560177B1 (en) Solid insulated switchgear
CN201853645U (en) High-voltage vacuum circuit breaker device and solid insulation permanent magnet operating ring network cabinet
CN203966948U (en) A kind of three station isolation grounding switchs
CN105119179B (en) A kind of switch cubicle and breaker
CN201498869U (en) Vacuum ring main unit
CN203301039U (en) Composite high-voltage combined electrical appliance and monopole structure thereof
CN202067720U (en) Vacuum circuit breaker for three-phase AC outdoor high voltage
CN103326272B (en) A kind of composite type high-voltage combined electrical apparatus and monopolar configuration thereof
CN104143451A (en) High-speed earthing switch and earthing switch assembly unit with same
CN201515161U (en) Gas insulation metal sealing switch equipment
CN204967106U (en) Cubical switchboard and circuit breaker
CN201796802U (en) High-pressure gas insulating load switch
CN201797234U (en) Small-sized vacuum ring main unit
CN202650955U (en) Outdoor high-voltage vacuum circuit breaker
CN201682190U (en) Three-phase distribution box outdoor high-voltage plug switchgear
CN105206464A (en) Three-station isolation grounding switch and GIS equipment equipped with the three-station isolation grounding switch
CN201417898Y (en) Outdoor high voltage cable branch box
CN202120805U (en) Cubicle gas insulated switchgear
CN104143465A (en) High-speed earthing switch and earthing switch assembly unit with the same
CN104143464A (en) Earthing switch assembling unit and high-speed earthing switch
CN102881510B (en) Three-station vacuum arc extinguishing chamber
CN202839450U (en) Vacuum arc extinguishing chamber
CN201758099U (en) Switch device with isolated and grounded vacuum circuit breaker
CN201570420U (en) Indoor high-voltage three-position disconnecting switch
CN104143466A (en) Earth switch assembly unit and high-speed earth switch thereof

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20151231

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee after: State Grid Corporation of China

Patentee after: Pinggao Group Co., Ltd.

Patentee after: Henan high General Electric Co., Ltd.

Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee before: State Grid Corporation of China

Patentee before: Pinggao Group Co., Ltd.

AV01 Patent right actively abandoned

Granted publication date: 20131120

Effective date of abandoning: 20160427

C25 Abandonment of patent right or utility model to avoid double patenting