CN104242208A - Double-circuit cable terminal steel pipe pole for overhead transmission line - Google Patents

Double-circuit cable terminal steel pipe pole for overhead transmission line Download PDF

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Publication number
CN104242208A
CN104242208A CN201410484216.XA CN201410484216A CN104242208A CN 104242208 A CN104242208 A CN 104242208A CN 201410484216 A CN201410484216 A CN 201410484216A CN 104242208 A CN104242208 A CN 104242208A
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CN
China
Prior art keywords
wire
arm
steel pipe
cable
cable terminal
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Granted
Application number
CN201410484216.XA
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Chinese (zh)
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CN104242208B (en
Inventor
王茂成
张波
王硕
杨丹
吴瑶
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.)
State Grid Corp of China SGCC
Shandong University
China Three Gorges University CTGU
Yantai Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Shandong University
China Three Gorges University CTGU
Yantai Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Publication date
Application filed by State Grid Corp of China SGCC, Shandong University, China Three Gorges University CTGU, Yantai Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201410484216.XA priority Critical patent/CN104242208B/en
Publication of CN104242208A publication Critical patent/CN104242208A/en
Application granted granted Critical
Publication of CN104242208B publication Critical patent/CN104242208B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a double-circuit cable terminal steel pipe pole for an overhead transmission line. The double-circuit cable terminal steel pipe pole comprises a steel pipe pole body (1), an upper wire cross arm (2), a middle wire cross arm (3), a lower wire cross arm (4), full-prefabricated dry cable terminals (5), single-conductor cables (6), line type zinc oxide lightning arresters (7), supporting insulators (8), single busbar fixing clamps (9), aluminum rows (10), copper to aluminum adapter boards (11), C-type device wire clamps (12), A-type device wire clamps (14), wire jumper expansion couplings (15), overhead conductors (16), round-steel-plate bird prevention covers (17), wire tension strings (18) and the like. The double-circuit cable terminal steel pipe pole is safe and reliable, the situation that the full-prefabricated dry cable terminals are damaged due to wind force is avoided, a worker can climb the pole for live line overhauling, and the overall layout is compact and attractive.

Description

A kind of overhead transmission line double back cable terminal steel pipe pole
Technical field:
The present invention relates to a kind of overhead transmission line double back cable terminal steel pipe pole, belong to the design of electric power system overhead transmission line, operation, maintenance field.
Background technology:
So far, the standard material of State Grid Corporation of China's competitive bidding is described as the composite bushing cable terminal of rigidity, " although Code for design of cables of electric works " (GB50217-2007) 4.1.2 article regulation " cable outdoor terminal should select dry type prefabrication type ", will not call for bid for full pre-fabricated dry (or dry type prefabrication type) cable terminal always; This is because according to operating statistic, there is operational defect in mounted indivedual full pre-fabricated dry cable terminal in the past; Reason is, full pre-fabricated dry cable terminal belongs to flexible material, swings and damaged internal stress cone under wind-force effect, causes inner field intensity inequality, punctures insulating barrier further; In addition, the never ripe measure rigidly fixing full pre-fabricated dry cable terminal.According to open source literature, site search is to the patented technology of 9 in cable terminal pole, does not all relate to the correlation technique of the measure rigidly fixing full pre-fabricated dry cable terminal.Below these 9 patented technologies are described below respectively:
1, cable terminal pole (invention people is the people such as Li Yan, application number CN200820177282.2): three groups of cross-arms are equipped with on cable terminal pole top, and a cable termination and lightning arrester base are housed in one end of each cross-arm; The two sides of the body of rod are equipped with some groups respectively and fix lead-up cable support.Do not mention and how to rigidly fix full pre-fabricated dry cable termination (flexibility), and moulding unsightly.
2, cable terminal support arrangement structure (invents the people such as artificial Zhang Zhijian, application number CN201110067309.9): described cable termination shaft tower is provided with mounting panel, described mounting panel is installed with lightning arrester and tag, and the distance between described tag and lightning arrester is 1 ~ 1.5m.This patent is applicable to rigid composite sleeve pipe (or porcelain sheath) cable termination, do not mention and how to rigidly fix full pre-fabricated dry cable termination (flexibility), and moulding unsightly.
3, cable terminal pole draws lower device (invention people is the people such as Zhao Shumin, application number CN201320671644.4): cable terminal pole draws lower device and comprises the body of rod, cross-arm, cable terminal, lightning arrester and cable termination cushion cap, cross-arm, cable termination cushion cap are all fixedly installed in the body of rod, cable terminal is installed on cable termination cushion cap, cross-arm be provided with for by cable guide to the supporting insulator of cable terminal, it is characterized in that: this cable terminal pole draws lower device and also comprises the lightning arrester cushion cap being fixedly installed in the body of rod, and lightning arrester is installed on lightning arrester cushion cap.This patent is applicable to rigid composite sleeve pipe (or porcelain sheath) cable termination, and shortcoming is, several supporting insulators are between overhead wire and cable termination, and complex structure, cannot step on bar hotline maintenance.
4, (invention people is the people such as Tang Minyan to high voltage electric transmission cable terminal pole, application number CN201320671723.5): cable terminal pole comprises the body of rod, cross-arm and cable termination cushion cap, described cross-arm comprises wire cross-arm, wire cross-arm and cable termination cushion cap are all fixed on the body of rod, it is characterized in that: wire cross-arm is provided with the lightning arrester link for zinc oxide surge arresters.This patent is applicable to rigid composite sleeve pipe (or porcelain sheath) cable termination, do not mention and how to rigidly fix full pre-fabricated dry cable termination (flexibility), and moulding unsightly.
5, cable termination platform and comprise its cable termination tower, the people such as Li Zhipeng, application number CN201220364507.1): described cable termination platform comprises platform; At least one group of cable termination installation component, arrange in described main platform body, each group of described cable termination installation component comprises three installation portions of installing cables terminals, three described installation portions be arranged so that distance each other and described cable terminal apart from the minimum range of described platform be all greater than wire charged time safe distance.This patent is applicable to rigid composite sleeve pipe (or porcelain sheath) cable termination, do not mention zinc oxide lightning arrester for power lines and how to rigidly fix full pre-fabricated dry cable termination (flexibility), and moulding unsightly.
6, (invention people is the people such as Wu Jun to cable termination tower, application number CN201320278476.2): it is characterized in that: comprise tower bar and be arranged at the independent rack of tower bar side, described tower bar is provided with several wire cross-arms, the first support, the second bracing frame is disposed with below described tower bar upper conductor cross-arm, described second bracing frame and the first bracing frame arrange 3 cross arm type supporting insulators separately, and the junction of the first bracing frame and cross arm type supporting insulator is provided with lightning arrester; Described independent rack top has terminal platform, described terminal platform is provided with the cable terminal for attached cable.This technology type is like patent 3, and be applicable to rigid composite sleeve pipe (or porcelain sheath) cable termination, difference is that lightning arrester is not built up on terminal platform, shortcoming is, several supporting insulators are between overhead wire and cable termination, and complex structure, cannot step on bar hotline maintenance.
7, (inventor is the people such as He Guangyuan to a kind of double loop cable termination tower, application number CN201220150373.3): comprise tower body and tower leg, described tower body is installed with the consistent cross-arm at least 4 layers of direction from top to bottom respectively, it is characterized in that: the two ends of described second layer cross-arm are respectively arranged with corner bracket in the same side, the tower body position below described lowermost layer cross-arm is respectively arranged with from top to bottom and keeps at a certain distance away and the upper and lower two-layer platform identical with cross-arm installation direction.What this technology described is cable bearer on cable needed for tower and cable termination platform, does not mention cable termination and lightning arrester, do not mention and how to rigidly fix full pre-fabricated dry cable termination (flexibility), and moulding unsightly.
8, (invention people is Liao Changbi to cable terminal steel pipe pole, application number CN201210556488.7): comprise and be provided with cross-arm, the mobile jib of lightning arrester and cable terminal, characterized by further comprising: for the cable termination shelf layer of concentrated setting cable terminal, for surge arrester support layer and the silicon rod shelf layer of concentrated setting lightning arrester, described cable termination shelf layer is disposed with from lower to upper at described mobile jib, surge arrester support layer, silicon rod shelf layer and some cross bars, described cable terminal is arranged in described cable termination shelf layer, described lightning arrester is arranged on described surge arrester support layer.This technology type like patent 3, is applicable to rigid composite sleeve pipe (or porcelain sheath) cable termination, difference be lightning arrester not on platform, shortcoming is, several supporting insulators are between overhead wire and cable termination, and complex structure, cannot step on bar hotline maintenance.
9, (invention people is the people such as Shen Caiyuan to Double-loop overhead cable terminal station, application number CN03220371.3): Double-loop overhead cable terminal station, it is characterized in that the steel pipe pole composition cable terminal station utilizing two differing heights, between two steel pipe poles, utilize connecting rod to be interconnected.This technical disadvantages is that floor space is large, and complex structure, cannot step on bar hotline maintenance.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned prior art and provide a kind of safe and reliable, full pre-fabricated dry cable terminal is avoided to damage because of wind-force, bar hotline maintenance can be stepped on, the overhead transmission line double back cable terminal steel pipe pole that integral arrangement is compact, attractive in appearance.
Object of the present invention can be reached by following measure: a kind of overhead transmission line double back cable terminal steel pipe pole, it comprises sole plate, rod body of steel pipe rod, rod body of steel pipe rod is provided with upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, it is characterized in that, between upper conductor cross-arm and middle wire cross-arm, the vertical distance between middle wire cross-arm and lower wire cross-arm is 3.5m to 4m, upper conductor cross-arm, middle wire cross-arm, the lower end of lower wire cross-arm is all symmetrically connected with zinc oxide lightning arrester for power lines, upper conductor cross-arm, middle wire cross-arm, rod body of steel pipe rod immediately below lower wire cross-arm is all horizontally installed with post insulator, post insulator is parallel to upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, full pre-fabricated dry cable terminal successively passes through copper to aluminum adapter bar, aluminium is arranged, A type device clamp is connected with wire wire jumper expansion joint end, and pass through post insulator, single busbar connection stationary fixture rigidly fixes full pre-fabricated dry cable terminal, zinc oxide lightning arrester for power lines is arranged by aluminium, device clamp is connected to the end of wire wire jumper expansion joint, the two ends of upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm all connect aerial condutor by wire tension-resistant series winding, aerial condutor connects wire wire jumper expansion joint, the upper end of upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm is equipped with round plate bird-proof cover, each full pre-fabricated dry cable terminal all connects a single-core cable, single-core cable is fixed on the cable bearer on rod body of steel pipe rod, and 3 single-core cables that often return below lower wire cross-arm are isosceles triangle arrangement.
In order to realize object of the present invention further, the arc length of described wire wire jumper expansion joint is 3.5-4 rice.
In order to realize object of the present invention further, described upper conductor cross-arm length 2.0m, middle wire cross-arm length 2.5m, lower wire cross-arm length 2.0m.
In order to realize object of the present invention further, the distance between described zinc oxide lightning arrester for power lines lightning arrester and rod body of steel pipe rod is 1.5m.
In order to realize object of the present invention further, described post insulator respectively with upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm at a distance of 1.7m.
In order to realize object of the present invention further, described single-core cable is provided with cable protection pipe.
In order to realize object of the present invention further, described single-core cable enters the sweep radius on ground to be 20D, D is the external diameter of cable.
The present invention can produce following good effect compared with the prior art: one is in conventional bar head design basis, strengthen vertical distance between 3 layer conductor cross-arms, by 3.5m to 4m, be convenient to the organic linking between full pre-fabricated dry cable terminal 5, zinc oxide lightning arrester for power lines 7, post insulator 8 three, make Cable Bending Radius meet technical requirement; Two be arrange 10 copper to aluminum adapter bar 11 by post insulator 8, aluminium, A type device clamp 14 rigidly fixes full pre-fabricated dry cable terminal 5, avoid its internal stress bore destroy; Three is install full pre-fabricated dry cable terminal 5, zinc oxide lightning arrester for power lines 7, post insulator 8 at bar head position distributing, and electrical design is compact, symmetrical, attractive in appearance; Four is wire jumper expansion joint sag, the length set up between aerial condutor 16 and post insulator 8, meets the requirement that wire tension-resistant string is upper and lower during line oscillation or strong wind, swing; Five are shaft sides, 3 single-core cables that often return of lower wire cross-arm less than 4 are isosceles triangle arrangement, thus reach appearance design object compact, attractive in appearance.By cable in shaft 1 side isosceles triangle compact Layout, be convenient to step on bar hotline maintenance; Overall compact, attractive in appearance.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the club head portion of Fig. 1;
Fig. 3 is the end view of Fig. 1;
Fig. 4 is the A portion enlarged drawing of Fig. 2;
Fig. 5 is the B portion enlarged drawing of Fig. 3;
Fig. 6 is the 6-6 profile of Fig. 1;
Fig. 7 is the 5-5 profile of Fig. 1;
Fig. 8 is the 4-4 profile of Fig. 1;
Fig. 9 is the 3-3 profile of Fig. 1;
Figure 10 is the 2-2 profile of Fig. 1;
Figure 11 is the 1-1 profile of Fig. 1;
Embodiment: preferred forms of the present invention is elaborated below in conjunction with accompanying drawing:
Embodiment: a kind of overhead transmission line double back cable terminal steel pipe pole (see Fig. 1-Fig. 5), it comprises sole plate 30, sole plate 30 joint steel pipe club body 1, and rod body of steel pipe rod 1 is provided with upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4; Upper conductor cross-arm 2 length 2.0m, middle wire cross-arm 3 length 2.5m, lower wire cross-arm 4 length 2.0m, between upper conductor cross-arm 2 and middle wire cross-arm 3, the vertical distance between middle wire cross-arm 3 and lower wire cross-arm 4 is 3.5m to 4m; The lower end of upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4 is all symmetrically connected with zinc oxide lightning arrester for power lines 7, distance between lightning arrester 7 and rod body of steel pipe rod 1 is 1.5m, rod body of steel pipe rod 1 immediately below upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4 is all horizontally installed with post insulator 8, post insulator 8 is parallel to upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4, and respectively with upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4 at a distance of 1.7m; Full pre-fabricated dry cable terminal 5 is successively connected with wire wire jumper expansion joint 15 end by MG-100 × 10 copper to aluminum adapter bar 11 ,-80 × 12 type aluminium row 10 of external seal heat-shrink tube, A type device clamp 14, and rigidly fix full pre-fabricated dry cable terminal 5 by post insulator 8, single busbar connection stationary fixture 9, to avoid full pre-fabricated dry cable terminal 5 internal structure impaired because wind speed swings; Be wound with aluminium armor tape 13 outside wire wire jumper expansion joint 15, shield.Zinc oxide lightning arrester for power lines 7 is connected to the end of wire wire jumper expansion joint 15 by aluminium row 10, SY-300/40C type device clamp 12; The two ends of upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4 are all by wire tension-resistant string 18 link hollow wire 16, aerial condutor 16 connects wire wire jumper expansion joint 15, aerial condutor 16, under the support of wire tension-resistant string 18, realizes being connected with wire wire jumper expansion joint 15, full pre-fabricated dry cable terminal 5, zinc oxide lightning arrester for power lines 7 reliable electric.The arc length of wire wire jumper expansion joint 15 is 3.5-4 rice, reduces producing tensile force to post insulator 8 to meet wire tension-resistant string about 18, in the process that swings.The upper end of upper conductor cross-arm 2, middle wire cross-arm 3, lower wire cross-arm 4 is equipped with round plate bird-proof cover 17, and it is located at directly over post insulator 8, in case bird pest.Each full pre-fabricated dry cable terminal 5 all connects a single-core cable 6, and single-core cable 6 is fixed on cable bearer 25 on rod body of steel pipe rod 1, cable bearer 24, cable bearer 23, cable bearer 22.Double back cable on rod body of steel pipe rod 1 horizontally (see Fig. 6, Fig. 7), 3 single-core cables that often return of lower wire cross-arm less than 4 are isosceles triangle arrangement (see Fig. 8-Figure 11), be fixed on the cable bearer of rod body of steel pipe rod 1, reach and reduce metal sheath induced voltage, increase current-carrying capacity of cable and double back cable terminal steel pipe pole appearance and modeling object attractive in appearance; Single-core cable 6 is provided with cable protection pipe 19, avoids being subject to wound.The sweep radius that sweep between full pre-fabricated dry cable terminal 5 and single-core cable 6, single-core cable 6 enter ground all should meet the minimum installation bending radius of cable (20D, D are the outside diameter of cable).

Claims (7)

1. an overhead transmission line double back cable terminal steel pipe pole, it comprises sole plate (30), rod body of steel pipe rod (1), rod body of steel pipe rod (1) is provided with upper conductor cross-arm (2), middle wire cross-arm (3), lower wire cross-arm (4), it is characterized in that between upper conductor cross-arm (2) and middle wire cross-arm (3), the vertical distance between middle wire cross-arm (3) and lower wire cross-arm (4) is 3.5m to 4m, upper conductor cross-arm (2), middle wire cross-arm (3), the lower end of lower wire cross-arm (4) is all symmetrically connected with zinc oxide lightning arrester for power lines (7), upper conductor cross-arm (2), middle wire cross-arm (3), rod body of steel pipe rod (1) immediately below lower wire cross-arm (4) is all horizontally installed with post insulator (8), post insulator (8) is parallel to upper conductor cross-arm (2), middle wire cross-arm (3), lower wire cross-arm (4), full pre-fabricated dry cable terminal (5) is successively by copper to aluminum adapter bar (11), aluminium row (10), A type device clamp (14) is connected with wire wire jumper expansion joint (15) end, and by post insulator (8), single busbar connection stationary fixture (9) rigidly fixes full pre-fabricated dry cable terminal (5), zinc oxide lightning arrester for power lines (7) is by aluminium row (10), device clamp (12) is connected to the end of wire wire jumper expansion joint (15), upper conductor cross-arm (2), middle wire cross-arm (3), the two ends of lower wire cross-arm (4) are all by wire tension-resistant string (18) link hollow wire (16), aerial condutor (16) connects wire wire jumper expansion joint (15), upper conductor cross-arm (2), middle wire cross-arm (3), the upper end of lower wire cross-arm (4) is equipped with round plate bird-proof cover (17), each full pre-fabricated dry cable terminal (5) all connects a single-core cable (6), single-core cable (6) is fixed on the cable bearer on rod body of steel pipe rod (1), lower wire cross-arm (4) 3 single-core cables that often return below are isosceles triangle arrangement.
2. a kind of overhead transmission line double back cable terminal steel pipe pole according to claim 1, is characterized in that the arc length of described wire wire jumper expansion joint (15) is 3.5-4 rice.
3. a kind of overhead transmission line double back cable terminal steel pipe pole according to claim 1, is characterized in that described upper conductor cross-arm (2) length 2.0m, middle wire cross-arm (3) length 2.5m, lower wire cross-arm (4) length 2.0m.
4. a kind of overhead transmission line double back cable terminal steel pipe pole according to claim 1, is characterized in that the distance between described zinc oxide lightning arrester for power lines lightning arrester (7) and rod body of steel pipe rod (1) is 1.5m.
5. a kind of overhead transmission line double back cable terminal steel pipe pole according to claim 1, it is characterized in that described post insulator (8) respectively with upper conductor cross-arm (2), middle wire cross-arm (3), lower wire cross-arm (4) at a distance of 1.7m.
6. a kind of overhead transmission line double back cable terminal steel pipe pole according to claim 1, is characterized in that described single-core cable (6) is provided with cable protection pipe (19).
7. a kind of overhead transmission line double back cable terminal steel pipe pole according to claim 1, is characterized in that entering the sweep radius on ground by described single-core cable (6) to be 20D, D is the external diameter of cable.
CN201410484216.XA 2014-09-22 2014-09-22 A kind of overhead transmission line double back cable terminal steel pipe pole Expired - Fee Related CN104242208B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406437A (en) * 2015-11-26 2016-03-16 国网浙江省电力公司台州供电公司 Outdoor lightning arrester foundation settlement resisting device and lightning arrester
CN107386771A (en) * 2017-08-24 2017-11-24 国网山东省电力公司济南市历城区供电公司 Cable type double back steel pipe rod-type terminal tower before and after a kind of 110kV overhead transmission lines
CN107905613A (en) * 2017-12-01 2018-04-13 浙江科诺电力发展有限公司 FTU single pole schemes
CN108868288A (en) * 2018-06-28 2018-11-23 海宁市金能电力实业有限公司 A kind of steel pipe pole of distribution line
CN111188525A (en) * 2019-12-27 2020-05-22 国网山东省电力公司海阳市供电公司 Combined device for reliably connecting double-circuit cable terminal and equipment cable clamp

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CN102227077A (en) * 2011-03-21 2011-10-26 江苏省电力公司无锡供电公司 Tower arrangement structure at cable terminal
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CN203654846U (en) * 2013-10-21 2014-06-18 杭州市电力设计院有限公司 Steel pipe pole used for cable terminal of electric transmission line
CN203729647U (en) * 2014-01-26 2014-07-23 盘锦电力设计研究所 Cable terminal tower device
CN203783224U (en) * 2014-04-30 2014-08-20 广州汇隽电力工程设计有限公司 110kV cable terminal tower optimization structure convenient to operate and maintain
CN204089116U (en) * 2014-09-22 2015-01-07 国家电网公司 A kind of overhead transmission line double back cable terminal steel pipe pole

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CN2453559Y (en) * 2000-10-31 2001-10-10 镇江供电局 Double loop hanging wire and terminal rod combined with cable
JP2002300708A (en) * 2001-03-30 2002-10-11 Sumiden Asahi Industries Ltd Structure and method for insulating coating
JP2004080923A (en) * 2002-08-20 2004-03-11 Kansai Electric Power Co Inc:The Branch connection structure and its construction method for power transmission branched steel tower
CN2612127Y (en) * 2003-03-14 2004-04-14 无锡供电设计研究院 Double-loop overhead cable terminal station
KR101077083B1 (en) * 2010-10-29 2011-10-26 대원전기 주식회사 Multi-cap for installing overrhead earth wire combined with neutral line
WO2012078073A1 (en) * 2010-12-10 2012-06-14 Открытое Акционерное Общество "Федеральная Сетевая Компания Единой Энергетической Системы" (Оао "Фск Еэс") Transition tower for an overhead electrical transmission line into a power cable, and overhead electrical transmission line having such a tower
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CN204089116U (en) * 2014-09-22 2015-01-07 国家电网公司 A kind of overhead transmission line double back cable terminal steel pipe pole

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406437A (en) * 2015-11-26 2016-03-16 国网浙江省电力公司台州供电公司 Outdoor lightning arrester foundation settlement resisting device and lightning arrester
CN105406437B (en) * 2015-11-26 2017-11-24 国网浙江省电力公司台州供电公司 The anti-settlement of foundation device of outdoor arrester and arrester
CN107386771A (en) * 2017-08-24 2017-11-24 国网山东省电力公司济南市历城区供电公司 Cable type double back steel pipe rod-type terminal tower before and after a kind of 110kV overhead transmission lines
CN107386771B (en) * 2017-08-24 2019-07-12 国网山东省电力公司济南市历城区供电公司 A kind of 110kV overhead transmission line front and back cable type double back steel pipe rod-type terminal tower
CN107905613A (en) * 2017-12-01 2018-04-13 浙江科诺电力发展有限公司 FTU single pole schemes
CN108868288A (en) * 2018-06-28 2018-11-23 海宁市金能电力实业有限公司 A kind of steel pipe pole of distribution line
CN111188525A (en) * 2019-12-27 2020-05-22 国网山东省电力公司海阳市供电公司 Combined device for reliably connecting double-circuit cable terminal and equipment cable clamp

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