CN102570482A - High voltage parallel capacitor device based on neutral point direct grounding mode - Google Patents
High voltage parallel capacitor device based on neutral point direct grounding mode Download PDFInfo
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- CN102570482A CN102570482A CN2012100300492A CN201210030049A CN102570482A CN 102570482 A CN102570482 A CN 102570482A CN 2012100300492 A CN2012100300492 A CN 2012100300492A CN 201210030049 A CN201210030049 A CN 201210030049A CN 102570482 A CN102570482 A CN 102570482A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
本发明公开了一种基于中性点直接接地的高压并联电容器装置，包括接地开关、避雷器、电流互感器、电容器组和电抗器；所述的接地开关与高压电缆进线相连，且接地开关通过连接导线与避雷器相连，避雷器通过连接导线与电流互感器相连，电流互感器通过连接导线与电容器组相连，电容器组通过连接导线与电抗器相连；电抗器上的中性点通过导线直接接地，所述的电容器组和电抗器底部分别安装有支柱绝缘子。本发明装置的绝缘水平逐级下降，安装结构简化，投资成本降低。
The invention discloses a high-voltage shunt capacitor device based on direct grounding of the neutral point, including a grounding switch, a lightning arrester, a current transformer, a capacitor bank and a reactor; the grounding switch is connected with the incoming line of a high-voltage cable, and the grounding switch passes The connecting wire is connected to the arrester, the arrester is connected to the current transformer through the connecting wire, the current transformer is connected to the capacitor bank through the connecting wire, and the capacitor bank is connected to the reactor through the connecting wire; the neutral point on the reactor is directly grounded through the wire, so The capacitor bank and the bottom of the reactor are respectively installed with post insulators. The insulation level of the device of the invention decreases step by step, the installation structure is simplified, and the investment cost is reduced.
Description
Technical field
The present invention relates to a kind of high-voltage parallel capacitor device based on neutral-point solid ground; Particularly relate to 220kV transformer station and use high-voltage parallel capacitor device.
Background technology
At present, high-voltage parallel capacitor device generally adopts isolated neutral, and mounting structure is complicated; Equipment investment cost is high, and mostly domestic 220kV and 110kV electric power system are solidly earthed neutral system, if high-voltage parallel capacitor device neutral point ground connection; High-voltage parallel capacitor device can adopt the step insulating Design, and from the line end to the neutral point, insulation level descends step by step; Thereby mounting structure is simplified the reduction cost of investment.
Summary of the invention
The object of the present invention is to provide a kind of high-voltage parallel capacitor device based on neutral-point solid ground, the insulation level of apparatus of the present invention descends step by step, and mounting structure is simplified, and cost of investment reduces.
In order to achieve the above object, technical scheme of the present invention is:
A kind of high-voltage parallel capacitor device based on neutral-point solid ground comprises earthed switch, lightning arrester, current transformer, capacitor group and reactor; Described earthed switch links to each other with the high-tension cable inlet wire; And earthed switch links to each other with lightning arrester through connecting lead; Lightning arrester links to each other with current transformer through connecting lead, and current transformer links to each other with the capacitor group through connecting lead, and the capacitor group links to each other with reactor through connecting lead; Neutral point on the reactor is through the direct ground connection of lead, and described capacitor group and reactor bottom are separately installed with post insulator.
The invention has the beneficial effects as follows: a kind of high-voltage parallel capacitor device of the present invention based on neutral-point solid ground; Neutral point side at high-voltage parallel capacitor device adopts direct ground structure; To substitute traditional earth-free structure of neutral point side; And adopt the step insulating Design, from the line end to the neutral point, insulation level descends step by step; So performance is constant keeping, high-voltage parallel capacitor device neutral point reactor place ground connection can be adopted the neutral point side that is loaded on capacitor device than the series reactor of original low two electric pressures; Equally, the capacitance group class of insulation also can be hanged down a grade; Realized the reduction cost of investment, the purpose that mounting structure is simplified.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an electric hookup of the present invention.
Embodiment
?
Embodiment 1
Like Fig. 1, a kind of high-voltage parallel capacitor device shown in 2, comprise earthed switch 1, lightning arrester 2, current transformer 3, capacitor group 4, reactor 5, post insulator 6 based on neutral-point solid ground; Described earthed switch 1 links to each other with the high-tension cable inlet wire; And earthed switch 1 links to each other with lightning arrester 2 through connecting lead; Lightning arrester 2 links to each other with current transformer 3 through connecting lead; Current transformer 3 links to each other with capacitor group 4 through connecting lead, and capacitor group 4 links to each other with reactor 5 through connecting lead; Neutral point on the reactor 5 is through the direct ground connection of lead, and described capacitor group 4 is separately installed with 4 post insulators 6 with reactor 5 bottoms.The outer periphery of described current transformer 3, capacitor group 4, reactor 5, post insulator 6 is equipped with safe fence 8.Described capacitor group 4 is made up of 12 above capacitor unit 7 connection in series-parallel, adopts the protection of bridge difference unsymmetrical current, and signal is taken from current transformer 3.Close during earthed switch 1 outage; High-voltage parallel capacitor device is through after earthed switch 1 ground connection; Can carry out repair and maintenance to high-voltage parallel capacitor device; Overvoltage protection when lightning arrester 2 is used for apparatus of the present invention operation, capacitor group 4 is used for reactive power compensation, and reactor 5 is used for suppressing to shove harmonic.After the energising of apparatus of the present invention high-tension cable, capacitor group 4 is started working, and is idle to the electrical network conveying, carries out reactive power compensation.Neutral point reactor 5 place's ground connection of high-voltage parallel capacitor device of the present invention, reactor 5 places utilize post insulator 6 insulation to reduce by two electric pressures, and capacitor group 4 places utilize post insulator 6 insulation to reduce a grade.Because the direct ground connection of capacitor device of the present invention, capacitor group 4 reduces with reactor 5 place's post insulators 6 classes of insulation.Post insulator 6 accounts for not little proportion in installation cost, so capacitor device neutral-point solid ground, and installation cost reduces greatly.A kind of high-voltage parallel capacitor device of present embodiment based on neutral-point solid ground; Neutral point side at high-voltage parallel capacitor device adopts direct ground structure; To substitute traditional earth-free structure of neutral point side; And adopt the step insulating Design, from the line end to the neutral point, insulation level descends step by step; So performance is constant keeping, high-voltage parallel capacitor device neutral point reactor place ground connection can be adopted the neutral point side that is loaded on capacitor device than the series reactor of original low two electric pressures; Equally, the capacitance group class of insulation also can be hanged down a grade; Realized the reduction cost of investment, the purpose that mounting structure is simplified.
Claims (2)
1. the high-voltage parallel capacitor device based on neutral-point solid ground is characterized in that: comprise earthed switch (1), lightning arrester (2), current transformer (3), capacitor group (4) and reactor (5); Described earthed switch (1) links to each other with the high-tension cable inlet wire; And earthed switch (1) links to each other with lightning arrester (2) through connecting lead; Lightning arrester (2) links to each other with current transformer (3) through connecting lead; Current transformer (3) links to each other with capacitor group (4) through connecting lead, and capacitor group (4) links to each other with reactor (5) through connecting lead; Neutral point on the reactor (5) is through the direct ground connection of lead, and described capacitor group (4) and reactor (5) bottom are separately installed with post insulator (6).
2. a kind of high-voltage parallel capacitor device based on neutral-point solid ground as claimed in claim 1 is characterized in that: described capacitor group (4) bottom is equipped with 4 post insulators (6); Reactor (5) bottom is equipped with 4 post insulators (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100300492A CN102570482A (en) | 2012-02-13 | 2012-02-13 | High voltage parallel capacitor device based on neutral point direct grounding mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100300492A CN102570482A (en) | 2012-02-13 | 2012-02-13 | High voltage parallel capacitor device based on neutral point direct grounding mode |
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| CN102570482A true CN102570482A (en) | 2012-07-11 |
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| CN2012100300492A Pending CN102570482A (en) | 2012-02-13 | 2012-02-13 | High voltage parallel capacitor device based on neutral point direct grounding mode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620315A (en) * | 2017-11-03 | 2018-01-23 | 中国电力工程顾问集团西南电力设计院有限公司 | One kind ± 800kV current conversion station DC fields high voltage installation mounting structures |
| CN108872712A (en) * | 2018-05-28 | 2018-11-23 | 国网河北省电力有限公司衡水供电分公司 | The system and method for shunt capacitor capacitance is calculated under isolated neutral scene |
| CN112802687A (en) * | 2020-12-30 | 2021-05-14 | 中铁第一勘察设计院集团有限公司 | High-altitude power capacitor device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201199632Y (en) * | 2008-05-07 | 2009-02-25 | 桂林电力电容器有限责任公司 | Parallel Capacitor Device for Double Overvoltage Protection |
| CN201438638U (en) * | 2009-06-05 | 2010-04-14 | 上海捷星电器制造有限公司 | High voltage shunt capacitor installation |
| CN201937271U (en) * | 2010-12-13 | 2011-08-17 | 河南省电力勘测设计院 | Compact type shunt capacitor complete device |
-
2012
- 2012-02-13 CN CN2012100300492A patent/CN102570482A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201199632Y (en) * | 2008-05-07 | 2009-02-25 | 桂林电力电容器有限责任公司 | Parallel Capacitor Device for Double Overvoltage Protection |
| CN201438638U (en) * | 2009-06-05 | 2010-04-14 | 上海捷星电器制造有限公司 | High voltage shunt capacitor installation |
| CN201937271U (en) * | 2010-12-13 | 2011-08-17 | 河南省电力勘测设计院 | Compact type shunt capacitor complete device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620315A (en) * | 2017-11-03 | 2018-01-23 | 中国电力工程顾问集团西南电力设计院有限公司 | One kind ± 800kV current conversion station DC fields high voltage installation mounting structures |
| CN108872712A (en) * | 2018-05-28 | 2018-11-23 | 国网河北省电力有限公司衡水供电分公司 | The system and method for shunt capacitor capacitance is calculated under isolated neutral scene |
| CN112802687A (en) * | 2020-12-30 | 2021-05-14 | 中铁第一勘察设计院集团有限公司 | High-altitude power capacitor device |
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Owner name: ZHEJIANG ELECTRIC POWER COMPANY SHAOXING POWER BUR Free format text: FORMER OWNER: SHANGHAI SIYUAN POWER CAPACITOR CO., LTD. Effective date: 20130426 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: SHAOXING POWER BUREAU Effective date: 20130426 |
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Free format text: CORRECT: ADDRESS; FROM: 312000 SHAOXING, ZHEJIANG PROVINCE TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20130426 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Zhejiang Electric Power Company Applicant after: Shaoxing Power Bureau Applicant after: Shanghai Siyuan Power Capacitor Co., Ltd. Address before: 312000 Shaoxing Shengli Road, Zhejiang, No. 58 Applicant before: Shaoxing Power Bureau Applicant before: Shanghai Siyuan Power Capacitor Co., Ltd. |
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Application publication date: 20120711 |