斷路器規(guī)格一翻譯-中英對照
表10
額定短時(shí)工頻耐受電壓（干、濕） 460kV
額定雷電沖擊耐受電壓 1050kV
無線電干擾水平 ≤500μV
瓷套管爬電比距 31mm/ kV*
注：*特殊訂貨不限
5 結(jié)構(gòu)與工作原理
5.1 GIS系統(tǒng)
GIS系統(tǒng)一般包括進(jìn)線間隔、出線間隔、測量和保護(hù)間隔等，它可根據(jù)用戶的不同要求組成單母線、單母線分段、雙母線及橋形接線等不同的接線方式。
典型間隔單元布置如圖1所示。
圖1典型間隔配置圖
在本GIS系統(tǒng)中，除主母線為三相共筒結(jié)構(gòu)外，其余元件均為分相式結(jié)構(gòu)，利用這些標(biāo)準(zhǔn)元件可以組裝成用戶要求的各種間隔。主回路導(dǎo)體由固體絕緣件支承在外殼中央，利用梅花觸頭作為過渡連接。可以通過套管與架空線連接，也可以與電力電纜或變壓器套管直接連接。
根據(jù)需要，GIS的氣體系統(tǒng)可以劃分為若干氣室。如斷路器室、母線室、進(jìn)出線氣室和電壓互感器氣室、避雷器氣室等。
一般每個(gè)間隔設(shè)有一個(gè)就地控制柜，各氣室的氣體監(jiān)視裝置和各元件的控制回路等二次部分都集中配置在控制柜中。
5．2部件結(jié)構(gòu)
5．2．1斷路器
a）總體結(jié)構(gòu)
斷路器為分相罐式結(jié)構(gòu)，如圖2所示。每相用一臺CTB-I 型彈簧操動機(jī)構(gòu)，電氣聯(lián)動。
圖2 三極斷路器外形圖
b）單極結(jié)構(gòu)原理
如圖3所示，靜觸頭部分由兩個(gè)環(huán)氧澆注的絕緣筒支承在罐頂部。動觸頭由絕緣筒支承在罐底部，且與絕緣拉桿和拐臂箱相連。滅弧室為有熱膨脹室并帶有輔助壓氣室的自能滅弧結(jié)構(gòu)，滅弧過程以自能吹弧為主，壓氣滅弧為輔。
在合閘位置，主回路從上出線端子經(jīng)靜觸頭、動觸頭、氣缸和中間觸頭到下出線端子。
分閘操作時(shí)，絕緣操作桿在分閘彈簧的作用下，使動弧觸頭、噴口、氣缸、拉桿等一起快速向下運(yùn)動。在運(yùn)動中，靜主觸頭和動主觸頭首先分離，接著靜弧觸頭和動弧觸頭分離，產(chǎn)生電弧。在開斷短路電流時(shí)，由于電流大，故弧觸頭間的電弧能量大，弧區(qū)熱氣流流入熱膨脹室，在熱膨脹室內(nèi)進(jìn)行熱交換，形成低溫高壓氣體；此時(shí)，由于熱膨脹室壓力大于壓氣室壓力，故單向閥關(guān)閉。
圖3 單相斷路器
當(dāng)電流過零時(shí)，熱膨脹室的高壓氣體吹向斷口間使電弧熄滅。在分閘過程中，壓氣室內(nèi)的氣體開始被壓縮，但達(dá)到一定的壓力時(shí)，底部彈性釋壓閥打開，一邊壓氣，一邊放氣，使機(jī)構(gòu)不必要克服更多的壓氣反力，從而大大地降低了操作功。開斷小電流時(shí)（通常在幾千安以下），由于電弧能量小，熱膨脹室內(nèi)產(chǎn)生的壓力小。此時(shí)壓氣室的壓力高于熱膨脹室內(nèi)的壓力，單向閥打開，被壓縮的氣體向斷口處吹去。在電流過零時(shí)，這具有一定壓力的氣體吹向斷口使電弧熄滅。
合閘操作時(shí)，絕緣操作桿向上運(yùn)動，推動動觸頭、氣缸及其它可動部件亦向上運(yùn)動，此時(shí)，SF6氣體迅速進(jìn)入氣缸內(nèi)，在合閘過程中，動靜弧觸頭首先接通，然后主動靜觸頭接通，完成合閘操作。
C) 彈簧機(jī)構(gòu)的結(jié)構(gòu)與原理
本斷路器配用CTB-I型彈簧操動機(jī)構(gòu)的結(jié)構(gòu)。
彈簧操動機(jī)構(gòu)安裝在底座內(nèi)，其外形及工作原理見圖4
彈簧機(jī)構(gòu)原理：
1) 儲能操作 一個(gè)交直流兩用的電機(jī)帶動齒輪的旋轉(zhuǎn)，通過90°¬¬¬¬¬¬¬¬¬¬¬¬換向傳遞給大、小棘爪，大、小棘爪推動棘輪旋轉(zhuǎn)，一端固定的合閘彈簧被聯(lián)動的拉桿壓縮而儲能；電機(jī)的停止由一個(gè)微動開關(guān)切斷電源完成。電機(jī)具備過流保護(hù)以及15S內(nèi)強(qiáng)制切斷電源功能。
2) 合閘操作 合閘線圈接受指令使操作桿推動脫扣器脫開，合閘保持掣子被頂起釋放棘輪，被保持的合閘彈簧釋放能量驅(qū)動凸輪旋轉(zhuǎn)，凸輪撞擊滾輪使拐臂旋轉(zhuǎn)完成合閘操作。合閘末端油緩沖器吸收多余能量。
另外，合閘操作的結(jié)果是與拐臂連接的分閘彈簧被壓縮而儲能。
3) 分閘操作 分閘線圈接受指令使操作桿推動脫扣器脫開，分閘保持滯子被頂起釋放臂，拐臂在分閘彈簧的驅(qū)動下旋轉(zhuǎn)完成分閘操作。在分閘末段緩沖器吸收多余的能量。
4) 重合閘操作 在合閘彈簧及分閘彈簧均儲能狀態(tài)時(shí)（也是GCB/GIS的工作狀態(tài)），施加分－0.3S－合分指令便可以完成。
（圖上文字，對照的方式：）
輸出拐臂1
輸出拐臂2
檢修分閘部分的防動銷
分閘線圈
合閘線圈
合閘彈簧
檢修分閘部分的防動銷
分閘彈簧及緩沖器
（圖上文字，對照的方式：）
棘爪
凸輪
分閘彈簧
拐臂
合閘彈簧
分閘保持掣子
棘輪
滅弧室
合閘保持掣子
合閘脫扣器
合閘位置（合閘彈簧已儲備能）
分閘線圈
分閘位置（合閘彈簧已儲備能）
合閘位置（合閘彈簧已儲備能）
圖4 CTB-I型彈簧操動機(jī)構(gòu)外形及原理圖
Beijing Beikai Electric Co., Ltd.
Design document
Product Name: ZF19- 252 Type Gas Insulated Mental-claded Switchgear
File name: Operation Instruction of Installation
File code: 0BK.411.045
Beijing Beikai Electric Co., Ltd.
ISO9001 and ISO14001 Certified
August of 2005
1. Scope
The contents of this documentation specified the installation and operation instruction of ZF19- 252 type gas insulated mental-claded switchgear after manufacturing.
This document is applicable to the ZF19- 252 type gas insulated mental-claded switchgear (hereafter referred to as GIS) and its spring operating mechanism (hereafter referred to as the mechanism).
2. Normative Reference
The clauses of the following files are quoted and became the clauses of this file. All the dated reference and the subsequent modification (the list of correction is not included) and revision are not suitable for this file; all the dated reference and the subsequent modification and revision are not suitable for this file.
GB311.1-1997: Insulation Coordination of High Voltage Transmission and Transformation Equipment
GB1984-2003: HV Alternating - Current Circuit Breakers
GB1985-2004: Alternating Current High-Voltage Disconnectors and Grounding Switches
GB/T3222-1994: Measurement of Acoustics and Environmental Noise
GB3309-1989: Mechanical Test at Ambient Temperature for High-Voltage Switchgear GB4109-1999: Technical Specification of High Voltage Bushing
Grade of GB4208-1993: Outer Covering Protective Grade (IP code)
GB5582-1993: External Insulation Pollution Classes of High-voltage Electric Power Equipments
GB7354-2003: Partial Discharge Measurement
GB7674-1997: Gas-Insulated Mental-claded Switchgear for Rated Voltages of 72.5 Kv And Above
GB/T8905-1996: Guide for Processing and Measuring SF6 Gas in Power Apparatus
GB11022-1999：Common Specifications for High-Voltage Switchgear and Control Gear Standards
GB11023-1989：Test Guide of SF6 Gas Tightness for High-Voltage Switchgear
DL/T617-1997：Specification for Gas-insulated Mental-claded Switchgear
3 Summaries
This manual is applicable to the GIS of Model ZF19-252, which introduce the relevant contents of the installation, operation and maintenance of GIS, as well as the security norm that should pay attention to and possible danger during the course. Any operator shall read this manual carefully before the installation and operation of GIS. It is required to be familiar with the relevant content before operation. Please contact manufacturer in case of doubt or need more detailed materials,
3.1 The GIS of Model ZF19-252 is suitable for AC power system of 50Hz and 252kV. It is the controlling and protection equipment of the power system.
3.2 The GIS unit is complied with the regulation of GB7674 and IEC60517.
GIS takes the SF6 gas as insulating and arc-quenching medium, which adopts the principle of self energy arc-quenching and cooperates with the spring operating mechanism. This unit is characterized by strong breaking performance, low operating power and high dependability.
3.3 Operational environmental condition
3.3.1 The normal operational environmental condition shall comply with the regulation of GB11022.
a)Environmental temperature -25 degrees Centigrade- +40 degrees Centigrade
b) Daily temperature difference ≯15K
c) Daily relative humidity ≯ 95%, monthly relative humidity ≯ 90%
d) Altitude: Do not exceed 1000m
e)Tolerance earthquake intensity: 9 degrees
3.3.2 Unit exposes outdoor such as bushing
a) Environmental temperature -35 degrees Centigrade- +40 degrees Centigrade
b) Daily temperature difference ≯ 32K
c) Solar radiation intensity ≯1000W/ m2 (at fine noon)
d) Wind pressure ≯ 700Pa
e) Thickness of ice covering ≯ 10mm
f) Air pollution: Do not exceed the III grade of GB5582
g) The tolerance earthquake intensity is about 9 degrees;
3.3.3 The special environmental condition of operation may consult separately.
4 Specified technical parameters
4.1 Common technical parameters of GIS: (form 1)
Form 1
Rated voltage 252kV
Rated frequency 50Hz
Rated current 3150A
Rated short time endured current/ duration
40kA/4s , 50kA/3s
Rated peak endured current 100kA , 125kA
Rated short time work frequency endured voltage ( 1min)
Phrase to phrase and grounding 460kV
Between the fractures 395+145* kV
Rated lightning impulse endured voltage
Phrase to phrase and grounding 1050kV
Between the fractures 950+206* kV
SF6 gas pressure (20 degrees Centigrade) rated value / alarming value Circuit breaker compartment: 0.6/0.55MPa
Other compartments: 0.5/0.45± 0.02MPa
SF6 gas moisture content (volume ratio)
Control value Circuit breaker compartment: ≯150μL/L
Other compartments: ≯250μL/L
Annual gas leakage rate of SF6 ≤0.5%
Control circuit and voltage of auxiliary circuit DC 110V or 220V, AC220V or 380V
Note: * voltage value of reverse polarity
4.2 Parameters of the components
(1). Circuit breaker (form 2)
Form 2
Serial number Project Unit Parameter
1 Centre distance between the polarity of circuit breaker
mm 580
2 Moving contact travel 145±3
3 Contacting travel of moving contact( Measuring unit) 61±2
4 Connecting rod travel of operating mechanism 97±1
5 Opening velocity
m/s 5.8
6 Closing velocity
3.2
7 Opening time
ms 30
8 Closing time
70±10
9 Opening- closing time 300
10 Closing- opening time 60
(Continuing)
Serial number Project Unit Parameter
11 Synchronization of the three-pole opening brake ( Time difference ) ms ≯ 3
12 Synchronization of the three-pole closing brake ( Time difference ) ≯ 5
13 Resistance of main circuit μ Ω ≯80
14 Specified operation order O-0.3s-CO-180s-CO
15 SF6 gas locking pressure (20 Centigrade) MPa 0.5
16 Spring operating mechanism CTB-1 type
17 Rated voltage of control circuit V DC220
18 Rated voltage of opening (closing) coil V DC220
19 Rated voltage of opening coil A 2
20 Rated voltage of closing coil A 2
21 The motor spring mechanism Voltage: DC220V
Power: 450W
22 energy storage period in case of rated voltage of stored energy motor
s ≤15
(2) Isolating switch (form 3)
Form 3
Rated operating time Opening : ≤6s
Closing : ≤6s
Rated controlling voltage / power DC or AC220V/240- 360W
Rated operation moment ≤200N•m
Rated conversion current / voltage of bus bar 1600A/20V
Rated charging current of bus bar 0.1
(3) Earth switch (form 4)
Form 4
Specified operating time Opening : ≤6s
Closing : ≤6s
Rated controlling voltage / power DC or AC220V/240- 360W
Rated operation moment ≤200N•m
Fast-type rated closing current of shorts current 100/125 kA
Fast-type rated current of electromagnetic induction / voltage 160A/15kV
Rated charging current of bus bar 5A/6kV
(4) Current transformer (form 5)
Form 5
Rated primary current 300,400,600, 800, 1000,1200,1600,2000, 2500A
Rated secondary current 5A
Rated output capacity and accuracy grade See forms 6
Form 6
Current ratio Rated outputs capacity VA Accuracy grade of measurement Accuracy grade of protection
300/5 40 0.5 5P20
400/5 40 0.5 5P20
600/5 40,40 0.5 5P20
800/5 40,40 0.5 5P20
1000/5 40,40 0.5 5P20
1200/5 40,40 0.5 5P20
1600/5 50 0.5 5P20
2000/5 50 0.5 5P20
2500/5 50 0.5 5P20
(5). Voltage transformer (form 7)
Form 7
Rated primary current 252/ kV
Rated secondary current 100/ V
Rated voltage of residual winding 100V
Amount outputs the capacity and accurate grade Secondary measuring winding 100VA/0.5 grade or 75VA/0.2 grade
Secondary protecting winding 150VA/30 grade
Residual winding 150VA/30 grade
(6). Lightning protector (Form 8)
Form 8
Rated voltage 252kV
Continuous operating voltage 168.5kV
DC 1mA reference voltage ≥ 314kV
1/4μs slope impulse residual voltage ≤ 630kV
8/20μs thunder impulse residual voltage ≤ 562kV
30/60μs operating impulse residual voltage ≤ 478kV
Resistance ability of 2ms rectangular wave current 600A, 800A, 20 times
Resistance ability of 4/10μs impact current 100kA, 2 times
(7) Bus bar (Form 9)
Form 9
Rated current 3150A
Rated short time work frequency endured voltage
To the ground: 460kV
Phrase to phrase: 460kV
Rated lightning impulse endured voltage
To the ground: 1050 kV
Phrase to phrase: 1050 kV
(8) Bushing (Form 10)
Form 10
Rated short time work frequency endured voltage ( Dry and wet)
460kV
Rated lightning impulse endured voltage
1050kV
Radio interference level
≤ 500μV
Porcelain bushing creep distance
31mm/ kV*
2013.6.2