CN103401158A - 330-kV high-resistance circuit for high-altitude area - Google Patents
330-kV high-resistance circuit for high-altitude area Download PDFInfo
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- CN103401158A CN103401158A CN2013103068374A CN201310306837A CN103401158A CN 103401158 A CN103401158 A CN 103401158A CN 2013103068374 A CN2013103068374 A CN 2013103068374A CN 201310306837 A CN201310306837 A CN 201310306837A CN 103401158 A CN103401158 A CN 103401158A
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Abstract
The invention provides a 330-kV high-resistance circuit for a high-altitude area. The 330-kV high-resistance circuit is composed of a GIS (Geographic Information System), a lightning arrester, a high resistor and lead wires, wherein the GIS is internally provided with an outgoing line voltage transformer; the lightning arrester is simultaneously used for the lightning-protection of an outgoing line and the lightning-protection of the high resistor; after the high resistor and the lightning arrester, which are connected in sequence by one of the lead wires, are connected with the GIS in parallel by the second lead wire, the high resistor, the lightning arrester and the GIS are connected to the outgoing line by the other lead wire. According to the 330-kV high-resistance circuit disclosed by the invention, the outgoing line voltage transformer is arranged inside the GIS so as to prevent the outgoing line voltage transformer from being contacted with the air, reduce the quantity of exposed equipment in the GIS, reduce dirty flash points and improve the reliability; a special isolation switch of the high resistor is cancelled; an outgoing line lightning arrester and a high resistor lightning arrester are arranged in a combined manner so that at last one half of the equipment quantity can be saved; only a structure of three elements needs to be adopted so that an equipment body and foundation investments are saved, the land acquisition area and the occupied area are greatly reduced, and the construction cost and the operation and overhauling cost are saved; the 330-kV high-resistance circuit is very suitable for the high-altitude area.
Description
Technical field
The invention belongs to extra-high tension unit device field, be specially a kind of high resistance of 330kV for high altitude localities loop.
Background technology
Along with growth at full speed and the national grid planning of national economy, China 330kV supergrid will have more Construction and operation in high altitude localities.High altitude localities 330kV transformer station compares with the following area of height above sea level 1000m, and it will propose high requirement to air gap, equipment outer insulation, thereby directly has influence on composition and the layout of power distribution equipment; Often landform is limited due to high altitude localities, needs the measure of considering that various saving are taken up an area; Simultaneously,, due to its special environmental quality, also have higher requirement to installation, maintenance etc. in high altitude localities.
At present in built all 330kV transformer stations that put into operation, " six elements " connected mode is adopted in 330kV high resistance loop always, be that high resistance loop equipment comprises GIS, outlet voltage transformer, outlet lightning arrester, isolating switch, high resistance lightning arrester, high resistance, amount to six elements.The outlet voltage transformer is because equipment is comparatively ripe, the existing open type that all adopts; The purpose that isolating switch is set arranges obvious cut-off point while mainly being to overhaul high resistance; It is because after arranging isolating switch, high resistance is far away apart from the outlet lightning arrester that outlet lightning arrester and high resistance lightning arrester arrange separately, is difficult to effectively be protected, and therefore the high resistance lightning arrester must be set separately high resistance is realized protection.For easy to connect, the locating of high resistance wiring all adopts flexible conductor to pass from the grading ring top.This scheme high resistance loop equipment is more, invests greatlyr, and floor space is very large, and pollution flashover point is more, is unfavorable for the high altitude localities expropriation of land, also be unfavorable for operating maintenance, and high resistance binding post place corona is more serious.
Summary of the invention
The problem that the present invention solves is to provide a kind of high resistance of 330kV for high altitude localities loop, and its structure forms simple, and floor space is little, and operational reliability is strong, and pollution flashover point is few.
The present invention is achieved through the following technical solutions:
A kind of high resistance of 330kV for high altitude localities loop, is characterized in that, GIS, lightning arrester, high resistance and wire, consists of; Be built-in with the outlet voltage transformer in described GIS; Described lightning arrester is used for the lightning-arrest of taking shelter from the thunder of outlet and high resistance simultaneously; High resistance and lightning arrester by wire connects successively, after wire is in parallel, together be connected to outlet by wire with GIS.
Preferably, after the binding post of described GIS is connected via wires to insulator string, then with outlet, be connected.
Preferably, described insulator string is arranged on the framework that connects ground wire.
Preferably, the distance between described lightning arrester and high resistance is no more than 10 meters.
Preferably, described wire adopts flexible conductor.
Preferably, described high resistance adopts double-deck grading ring.
Preferably, wiring place of high resistance and wire, wire passes setting in the middle of double-deck grading ring.
Compared with prior art, the present invention has following useful technique effect:
A kind of high resistance of 330kV for high altitude localities of the present invention loop, wherein, the outlet voltage transformer is built in GIS the GIS built-in voltage instrument transformer technology of utilizing, can reach the effect of existing equipment, simultaneously price is not high, and has blocked contacting of outlet voltage transformer and air, has reduced the equipment amount that exposes in GIS, reduce the pollution flashover point, improved reliability; Existing 330kV high resistance is all moved simultaneously with outlet or is stopped transport simultaneously, does not have namely that outlet is charged and high resistance withdraws from this operating mode of maintenance, therefore the isolating switch of high resistance special use can be cancelled; After cancelling isolating switch; high resistance and outlet lightning arrester Distance Shortened; can effectively be protected; outlet lightning arrester and high resistance lightning arrester can be merged setting, thereby can save the equipment amount of half at least, only need to adopt the structure of " three elements " to form; apparatus body and infrastructure investment have been saved; significantly reduced expropriation of land, floor space, saved operating expenses and operating maintenance cost, be highly suitable for high altitude localities and use.Adopt " three elements " of the present invention scheme, high resistance loop longitudinal size is 25m, more former longitudinal size is that 41.5m's " six elements " scheme can be saved the longitudinal size 16.5m of power distribution equipment, save high resistance loop floor space 39.76%, reduction effect is extremely remarkable, and due to the dwindling of size, a lightning arrester also can play good lightning protection effect.Adopt simultaneously " three elements " of the present invention scheme, can save the expense of 500,000 yuan than each group high resistance loop of " six elements " scheme in prior art, if there are 10 high resistance loops in some power stations, the expense of saving is just 5,000,000 yuan, and effect is very remarkable.
Further, adopt flexible conductor to connect GIS, lightning arrester and high resistance, improved the convenience of construction, operation and maintenance; Because the high altitude localities corona discharge is comparatively serious, particularly high resistance binding post place is particularly evident, and therefore in the junction of high resistance and wire, wire passes through in the middle of double-deck grading ring, the noise that reduces corona loss and cause; After the binding post of GIS is connected via wires to insulator string, then with outlet, be connected, guaranteed the safety and reliability of construction, operation and maintenance.
Description of drawings
Fig. 1 is the schematic diagram of structure described in example of the present invention.
In figure: 1 is GIS; 2 are the outlet voltage transformer; 3 is lightning arrester; 4 is high resistance; 5 is framework; 6 is insulator string; 7 is wire.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment, and the explanation of the invention is not limited.
Referring to Fig. 1, a kind of high resistance of 330kV for high altitude localities loop, be comprised of GIS1, lightning arrester 3, high resistance 4 and wire 7; Be built-in with outlet voltage transformer 2 in described GIS1; Described lightning arrester 3 is used for the lightning-arrest of taking shelter from the thunder of outlet and high resistance 4 simultaneously; High resistance 4 and lightning arrester 3 by wire 7 connects successively, after wire 7 is in parallel, together be connected to outlet by wire 7 with GIS1.Wherein, wire 7 adopts flexible conductor; High resistance 4 adopts double-deck grading ring, wiring place of high resistance 4 and wire 7, and wire 7 passes setting in the middle of double-deck grading ring, and corona loss is little, and the noise that causes is low.The binding post of GIS1 after wire 7 is connected to insulator string 6, then is connected with outlet.Distance between lightning arrester 3 and high resistance 4 is no more than 10 meters, can realize good protection to high resistance 4.As shown in Figure 1, insulator string 6 is arranged on framework 5, and framework 5 supports on the ground, and top is connected with ground wire, thereby guarantees insulation requirements and the security performance in high resistance loop.
Outlet voltage transformer 2 is built in GIS1, has reduced the occupation of land of outlet voltage transformer 2; Cancel isolating switch, directly can save its investment and occupation of land; Outlet lightning arrester and high resistance lightning arrester are merged,, only with a lightning arrester 3,, by with high resistance 4, with outlet, being connected and being connected, realize original function, save former high resistance lightning arrester investment and take up an area; After high resistance 4 adopted double-deck Equalized voltage ring construction, by the grading ring size rationally is set, wire 7 can pass in the middle of double-deck grading ring, reduces corona loss.
Can draw by above-mentioned analysis, the structure in 330kV high resistance of the present invention loop forms and connects, have the equipment investment of reducing, reduce to take up an area, reduce the installation and repairing quantities, improve reliability, improve convenience, reduce the advantages such as corona loss and noise, can apply in engineering, and provide a new Scheme Choice for the high resistance loop design.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of submitting to.
Claims (7)
1. a 330kV high resistance loop that is used for high altitude localities, is characterized in that, by GIS(1), lightning arrester (3), high resistance (4) and wire (7) form; Described GIS(1) be built-in with outlet voltage transformer (2) in; Described lightning arrester (3) is used for the lightning-arrest of taking shelter from the thunder of outlet and high resistance (4) simultaneously; The high resistance (4) and the lightning arrester (3) that are connected successively by wire (7), with GIS(1) after wire (7) is in parallel, together by wire (7), be connected to outlet.
2. a kind of high resistance of 330kV for high altitude localities according to claim 1 loop, is characterized in that described GIS(1) binding post after wire (7) is connected to insulator string (6), then with outlet, be connected.
3. a kind of high resistance of 330kV for high altitude localities according to claim 2 loop, is characterized in that, described insulator string (6) is arranged on the framework (5) that connects ground wire.
4. a kind of high resistance of 330kV for high altitude localities according to claim 1 loop, is characterized in that, the distance between described lightning arrester (3) and high resistance (4) is no more than 10 meters.
5. a kind of high resistance of 330kV for high altitude localities according to claim 1 loop, is characterized in that, described wire (7) adopts flexible conductor.
6. the described a kind of high resistance of 330kV for high altitude localities of any one loop according to claim 1-5, is characterized in that, described high resistance (4) adopts double-deck grading ring.
7. a kind of high resistance of 330kV for high altitude localities according to claim 6 loop, is characterized in that, wiring place of high resistance (4) and wire (7), and wire (7) passes setting in the middle of double-deck grading ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306837.4A CN103401158B (en) | 2013-07-19 | 2013-07-19 | A kind of 330kV high-resistance loop for high altitude localities |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306837.4A CN103401158B (en) | 2013-07-19 | 2013-07-19 | A kind of 330kV high-resistance loop for high altitude localities |
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| CN103401158A true CN103401158A (en) | 2013-11-20 |
| CN103401158B CN103401158B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310306837.4A Active CN103401158B (en) | 2013-07-19 | 2013-07-19 | A kind of 330kV high-resistance loop for high altitude localities |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730842A (en) * | 2013-11-22 | 2014-04-16 | 国家电网公司 | High-resistance loop in transformer substation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09163595A (en) * | 1995-12-01 | 1997-06-20 | Hitachi Ltd | Converter for ultrahigh voltage system |
| CN101593877A (en) * | 2009-06-26 | 2009-12-02 | 中国电力工程顾问集团公司 | A kind of connected system that comprises ultra-high voltage main device and aluminum tubular conductor |
| CN102339669A (en) * | 2010-07-23 | 2012-02-01 | 江苏思源赫兹互感器有限公司 | Gas insulated switchgear (GIS) combined type voltage transformer |
| CN203367778U (en) * | 2013-07-19 | 2013-12-25 | 中国电力工程顾问集团西北电力设计院 | A 330KV high voltage parallel reactor loop used for high-altitude regions |
-
2013
- 2013-07-19 CN CN201310306837.4A patent/CN103401158B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09163595A (en) * | 1995-12-01 | 1997-06-20 | Hitachi Ltd | Converter for ultrahigh voltage system |
| CN101593877A (en) * | 2009-06-26 | 2009-12-02 | 中国电力工程顾问集团公司 | A kind of connected system that comprises ultra-high voltage main device and aluminum tubular conductor |
| CN102339669A (en) * | 2010-07-23 | 2012-02-01 | 江苏思源赫兹互感器有限公司 | Gas insulated switchgear (GIS) combined type voltage transformer |
| CN203367778U (en) * | 2013-07-19 | 2013-12-25 | 中国电力工程顾问集团西北电力设计院 | A 330KV high voltage parallel reactor loop used for high-altitude regions |
Non-Patent Citations (1)
| Title |
|---|
| 刘晓瑞等: "1000kV特高压变电站高抗回路隔离开关设置研究", 《电网与水力发电进展》, 30 November 2007 (2007-11-30), pages 14 - 17 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730842A (en) * | 2013-11-22 | 2014-04-16 | 国家电网公司 | High-resistance loop in transformer substation |
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| CN103401158B (en) | 2016-08-10 |
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Address after: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Applicant after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Applicant after: State Grid Qinghai Electric Power Company Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Applicant before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation Applicant before: State Grid Qinghai Electric Power Company |
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