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 PDF

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Publication number
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
Authority
CN
China
Prior art keywords
reactor
neutral point
capacitor device
voltage parallel
current transformer
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.)
Pending
Application number
CN2012100300492A
Other languages
Chinese (zh)
Inventor
李电
贾晓齐
陈晓宇
王金刚
姚晖
蔡重凯
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.)
Shanghai Siyuan Power Capacitor Co., Ltd.
State Grid Corp of China SGCC
Zhejiang Electric Power Co
Shaoxing Electric Power Bureau
Original Assignee
SHANGHAI SIYUAN POWER CAPACITOR CO Ltd
Shaoxing Electric Power Bureau
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 SHANGHAI SIYUAN POWER CAPACITOR CO Ltd, Shaoxing Electric Power Bureau filed Critical SHANGHAI SIYUAN POWER CAPACITOR CO Ltd
Priority to CN2012100300492A priority Critical patent/CN102570482A/en
Publication of CN102570482A publication Critical patent/CN102570482A/en
Pending legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

Abstract

The invention discloses a high voltage parallel capacitor device based on a neutral point direct grounding mode. The device comprises a grounding switch, a lightning arrester, a current transformer, a capacitor set and a reactor. The grounding switch is connected with a high voltage cable inlet wire as well as is connected with the lightning arrester by a connection lead wire; the lightning arrester is connected with the current transformer by a connection lead wire; the current transformer is connected with the capacitor set by a connection lead wire; the capacitor set is connected with the reactor by a connection lead wire; and a neutral point on the reactor is directly grounded by a lead wire. Besides, post insulators are respectively installed at bottoms of the capacitor set and the reactor. According to the invention, the insulation levels of the provided device are gradually reduced level by level; the installation structure is simplified; and investment cost is reduced.

Description

A kind of high-voltage parallel capacitor device based on neutral-point solid ground
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).
CN2012100300492A 2012-02-13 2012-02-13 High voltage parallel capacitor device based on neutral point direct grounding mode Pending CN102570482A (en)

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

Applications Claiming Priority (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

Publications (1)

Publication Number Publication Date
CN102570482A true CN102570482A (en) 2012-07-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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)

* Cited by examiner, † Cited by third party
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 apparatus with dual over-voltage protection
CN201438638U (en) * 2009-06-05 2010-04-14 上海捷星电器制造有限公司 High-voltage parallel connection capacitor
CN201937271U (en) * 2010-12-13 2011-08-17 河南省电力勘测设计院 Compact type shunt capacitor complete device

Patent Citations (3)

* Cited by examiner, † Cited by third party
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 apparatus with dual over-voltage protection
CN201438638U (en) * 2009-06-05 2010-04-14 上海捷星电器制造有限公司 High-voltage parallel connection capacitor
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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Effective date: 20130426

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Free format text: CORRECT: ADDRESS; FROM: 312000 SHAOXING, ZHEJIANG PROVINCE TO: 100031 XICHENG, BEIJING

TA01 Transfer of patent application right

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.

C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120711