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配电网全绝缘全密封SF6看门狗分界开关开闭所NKVSR3简介 看门狗分界全绝缘全密封六氟化硫开关开闭所 共箱式SF6六氟化硫气体全绝缘全密封真空开关柜
配网看门狗分界开关在10 kV线路上的应用可大大减少无故障线路的连带性事故停电、缩小故障停电范围、缩短用户停电时间，从而提高用户的供电可靠性。
图1 分界开关控制器示意图
我公司的分界开关其主要功能：运行中自动隔离用户侧相间短路故障、自动切除用户侧接地故障，并可用于操作拉合负荷电流。
表2 分界负荷开关的故障处理方式
3 分界负荷开关的定值与变电站出线保护定值配合问题
5 安装分界负荷开关应注意的问题
图2 分界负荷开关安装示意图
二 配电网全绝缘全密封SF6（六氟化硫）看门狗分界负荷开关本体部分介绍 NK(XGN口-12)箱型固定式交流充气金属封闭开关设备
概述 NK(XGN口-12)箱型固定式交流充气金属封闭开关设备 (简称”SF6环网柜)是在 ABB公司ABBUniswitch Safe-Ring\Safe-Plus环网柜SF6负荷开关技术基础上, 结合我公司多年产品开发和制造经验,自主开发的具有高可靠性的免维护小型化开关柜,产品适用于三相交流50Hz,电压为3-24KV环网供电或辐射供电系统;产品所有高压带电部件,包括负荷开关,断路器,接地开关,一次母线等均密封在充有SF6气体的不锈钢箱体中,进出线采用全密封的肘形电缆插头,受环境影响少,在使用环境比较恶劣及空间比较窄的场所更显出优越性:如:预装式变电站,地下变电站,区矿企业或环境潮湿,污秽较严重的地区.
本系列环网柜符合 GB/T11022-1999<<高压开关设备和控制设备标准的共用技术要求>>, GB3804-2004<3.6KV-40.5KV高压交流负荷开关>>, GB16926-1997<<高压交流负荷开关-熔断器>> GB-1985-2004<<高压交流隔离开关和接地开关>>, DL/T404-1997 <<户内交流高压开关柜订货技术条件>>, DL/T791-2001<<户内交流充气式开关柜选用导则>>等标准, 在正常条件下运行寿命超过20年.
General NK(XGN口-12) series fixed type indoor AC metal clad switchgear (SF6 RMU Abbreviation). one of minimized switchgear with the character of excellence reliability and maintenance free ,is a new product self –developed by R&D of group based on the years experience in R&D and fabrication on products and on the advance technology of ABB SF6 LBS &ABB Uniswitch Safe-Ring\Safe-Plus. The product is suitable for AC 3 to 24KV power distribution system with configuration either ring or radiant.. Its all live part including LBS,CB, ES and primary busbar are sealed in the tank made of stainless steel and the elbow –shape cable connectors and adopted for the incoming or out-going, that leds it is suitable for use in the bad ambient condition and relatively restricted space ,just like in pre-fabricated substation, underground substation, industrial and mining enterprises or in high humidity and heavy pollution area. The series of RMU is compliance with the following standards and its service life is mord than 20 years under normal ambient condition.
GB/T1022-1999 <<Common specifications for high-voltage switchgear and controlgear standars>> IEC 694:1996 Common specifications for high-voltage switchgear and controlgear standards EQV
GB3804-2004 <<Alternating current high voltage load-breaker>> (IEC 60265-1/FDIS: 1997 high voltage switchgear part 1:Swiches for rated voltage above 1KV and less than 52KV .MOD
GB/T1984-2003 <<Alternating current high –voltage circuit-breaker>> (IEC 62271-100: 2001 high –voltage switchgear and controlgear part 100: high-voltage alternating-current circuit-breakers .MOD)
GB/T1984-2004<<High-voltage alternating-current disconnectors and earthing Switches>> (IEC 62271-100: 2002 high –voltage alternating-current disconnectors and earthing switches .MOD)
DL/T404-1997<<Indoor AC high voltage switchgear>> (IEC298:1990 A.C metal-enclosed switchgear and controlgear for rated voltages above 1KV and up to including 52KV .EQV)
DL/.T791-2001<<Specifications of A.C. HV gas-filled switchgear panel >> (IEC420:1990 high-voltage alternating current switch-fuse combination and IEC 517-1990 Gas-insulated metal-enclosed switchgear for rated voltage of 72.5KV and above :MOD)
Product code of manufacturer NK(XGN口-12)口 NK产品企业代号 X箱型 Cubicle Type G固定式 Fixde Type N户内 Indoor 口设计序号 Design Series 12额定电压kV Rated Voltage 口组合方案(V、F、C、D) Combination Scheme V: 真空断路器单元 V: VCB unit F: 负荷开关熔断器组合单元 F : LBS-Fuse combination unit C: 负荷开关单元 C: LBS unit D: 直接进出线单元 D: in & Out Directly unit 开关柜外形及基本结构 1双通套管(单元扩展用) 2熔断器室 3电缆室 4操作机构 5充气单元 6底架
The outline and base structure of cubicle 1 Connecting bushing(for extending) 2 Fuse chamber 3 Cable chamber 4 Operating mechanism 5 Unit gas filled 6 Support frame
结构特点 产品由充气室,操作机构,箱体底架,电缆室,熔断器室及低压室等五部分组成:
1共箱式设计:多回路的一次元件安装在同一个充气室内,完成多项供配电功能,组合灵活. 2采用SF6气体作为绝缘介质, 限度缩小了柜体的体积. 3采用屏蔽型电缆接头,绝缘表面接地可触摸,安全可靠,能适应恶劣的环境条件. 4采用压气式灭弧原理,SF6气体作为灭弧介质,额定转移电流达到2200A 5断路器采用真空灭弧,短路开断能力强,不会污染SF6气体 6负荷开关和接地开关之间装有完善的机械联锁装置. 7充气室设有多个观察窗口,可从多个角度看到断口状态. 8开关柜设有带电显示器,气压表,压力释放装置等,操作安全可靠 9充气室为不锈钢壳体,可靠接地,增加了电气安全性 10负荷开关安装在封闭的绝缘筒中,既减少了污染,又方便更换 11根据用户的需要,在柜体上方可以引出套管作为扩展单元用 12底架空间宽阔,可安装多分支电缆插头及避雷器等.
Features in configuration The RMU consists of 5 portions :Gas filled chamber, Operation mechanism, Supporting frame,Cable chamber, Fuse chamber and Secondary circuit(LV) chamber 1 One tank design: Multi-circuit in one gas filled tank with agile combination to performance difference power distribution functions 2 With SF6 gas as insulated medium to reduce the volume greatly 3 Shield cable terminals with touchable surface and reliable safety character are suitable for abominable ambient condition 4 Using SF6 as the arc extinguishing medium ,the LBS which adopting gas-pressed are extinguishing principle is able to break the transfer current up to 2200A 5 The circuit breaker is vacuum type with high breaking capacity and no pollution to SF6 gas 6 There is a perfect mechanical interlock between LBS and ES. 7 The state of contacts can be chock in difference angles by eye easy from some viewing windows of tank filled 8 The cubicle is equipped with the living indicator, pressure gage and the over pressure releaser to ensure the safety of service 9 The tank filled with gas and made from stainless steel is earthing reliably to increase the electric safety 10 The fuse is barreled in insulated cylinder to prevent the pollution in which the fuse body is easy to replace 11 If need to extend to fit a bushing on the top of cubicle for extending is available 12 The multi-branch cable plugs and arresters can be fitted in bottom support chamber with vast space
Product code of manufacturer
操动机构 负荷开关操动机构: 手动或电动,弹簧储能快合快分操作. Operating mechanism Operating mechanism of LBS: Manual or motor, Spring energy storing for performing fast C & fast O operation.
接地开关操动机构: 手动分合闸操作;合闸时快速合闸装置使主地刀具有关合短路 电流的能力. .接地开关与主开关有可靠的机械联锁机构 当主开关合闸后,接地开关不能合闸;反之.当接地开关合闸后,主开关不能合闸 Operating mechanism of ES: Manual operating; The main earthing blade is provided with the capacity of making short circult current due its fast closing design. There is a rellable mechanical interlock between the LBS and the ES,when the LBS is in close position the ES cannot be closed;when,contrarily,the ES is closed the LBS can not be closed.
负荷开关熔断器组合电器的操作机构 手动或电动操作使合闸,分闸弹簧同时储能,操作机构储能后显示”弹簧已储能”..合闸时,合闸弹簧释能快速合闸,分闸弹簧维持储能状态;若有故障电流使熔断器熔断,则熔断器的撞针使脱扣器动作开关快速断开.分闸时,通过手动或电动方式反方向操作(或通过分励脱扣器,熔断器撞击装置动作)使分闸弹簧脱扣后迅速释放以实现”快分”.
The mechanism of LBS-Fuse combination unit: Manual or motor energize the O & C springs synchronously, The indicator of “ Spring energized “will appear after spring energized.
When closing ,the C spring release the energy stored quickly to close the LBS, the O spring keeps in energized estate, if the fuse is melted due to the fault current, then the firing-pin of fuse strikes the releaser of LBS to open quickly.
When opening, the O spring will release the stored energy to perform the “ast open” by the opposition-operation of manual or motor (or by the shunt releaser or by the strike action of the firing-pin of fuse)
断路器操动机构 采用弹簧操作机构,通过波纹管密封装置传递分合闸动力.
Operating mechanism of CB Spring mechanism drives the close or open energy to CB by seal bellows driver
充气室
SF6环网柜是一种小型的GIS开关设备,所有高压带电部件均封闭在不锈钢壳体内,箱体里充有相对压力为0.03Mpa的SF6气体,起绝缘及灭弧作用. 充气室内安装有专用的吸附剂,可有效控制SF6气体的水分含量以及电弧分解物所产生的其他杂质. 每个充气室带有气压表,底部装有压力释放装置和释放通道,当箱体内部气压由于短路故障,高温等原因导致异常升高时,它首先被破而释放压力,对人身及设备起到了安全防护作用.
Gas filled chamber NK(XGN口-12)series SF6 RMU is a kind of GIS ,its all HV living part are sealed in a stainless Steel tank which filled with SF6 gas at 0.03Mpa in as insulation and arc extinguishing medium. There is a special absorbent inside ,to absorb the trace moisture of SF6 gas and the decompositions of SF6 by the function of arc and other impurity/. Each gas-filled tank of cubicle is equipped with a pressure gauge, and with a pressure releaser and the pressure relief channel. If the gas pressure in the tank rises up to abnormal value due to the arc or high temperature ,then the releaser is broken firstly by pressure to release the pressure therefore to ensure the Safety of operator and the equipment.
负荷开关 负荷开关以SF6气体作为绝缘和灭弧介质,采用独特的直动压气式灭弧原理.利用活塞和气缸在开断过程中的相对运动产生压缩气体经喷口处高速吹向电弧,电弧被拉长,并冷却至熄灭
LBS The LBS adopts the princlple of straight move to compress gas to extinguish the arc.The current carrying part is apart from the arc-extinguishing prat,during the opening, the gas compressed by the piston and cylinder with opposite movement blows to the arc quickly via a nozzle,then the arc is being stretched and cooled off till quenched
负荷开关熔断器组合电器 熔断器安装在环氧树脂制成的绝缘套筒中,从柜前可以很容易的进行更换.绝缘套筒插入到充气室内,并与充气室之间有很好的密土封,既保证了充气室内SF6气体不会泄漏,又保证了充气室内电气部件与熔断器之间可靠的电气连接.任意一相熔断器熔断,负荷开关脱扣跳闸.
LBS-Fuse combination unit The fuse is barreled in insulated cylinder in which the fuse body is easy to replace from the Front side of cubicle. The insulated cylinder is inserted in gas filled tank and with sealed well from Tank ,so the gas in the tank can not leak and the fuse has a reliable contact with the living part in side. If the fuse in any phase is melted due to the fault current, then LBS to be opened quickly.
环网柜主要技术参数 Table 1
电缆的安装与连接 位于柜体下部的电缆室,实现多回路的进出线连接
Cable connection: Multi-circuit cables can be arranged and connected in the nether cable chamber.
单元扩展: 位于柜体上部引出的双通套管,通过绝缘母线实现与相邻柜体的自由组合及扩展
Unit extending : The bushing located in the top of cubicle can be used for joining the contiguous cubicles freely and extending by insulated busbar ducts
多于5回路时采用绝缘母线扩展 Insulated busbar ducts are suitably used for extending the circuits as that is more than 5
环网柜主要方案 环网柜主要方案(可根据用户要求进行左侧扩展,右侧扩展,左右两侧扩展;左侧进出线,右侧进出线.)
The main scheme of the RMU (The extending of cubicle in double side or in one side is available according to the requirement of user, the side in-coming or out-going arrangement is also available.)
注: R-直接进线单元 L-负荷开关单元 T-负荷开关熔断器组合单元 D-真空断路器单元 带有熔断器方案柜体上方深度为745mm, 只有负荷开关方案柜体上方深度为700mm 带断路器方案柜体上方深度为850mm Note: D=745mm for with fuse D=700mm for with LBS only D=850mm for with VCB
安装 .开关设备安装基础的施工应符合<<电力建设施工及验收技术规范>>中的有关条款规定: 电房高度不低于2.5米 柜体单列时,柜前走廊以1.5米为宜;双列布置时,柜间操作走廊以2米为宜; 一次电缆终端安装严格按相关工艺要求: 电缆沟上方预埋10号槽钢,柜子放在槽钢上固定;
Installation The foundation for cubicle should be in conformance with the relative requirements Stipulated in <<The Code of Erection and Acceptance of Electric Power Construction>> The height of cubicle room should not be lower than 2.5m The width of the corridor in front of cubicles which are arranged in one row takes 1.5m properly,2m for Double rows arrangement The assembly of primary cable terminals should be in accordance with requirements of relative technology Strictly The 0 U type steel should be built in the top edges of cable trench as the base of cubicle
订货时需确定的资料内容 一次线路系统图,排列图及平面布置图 二次线路原理图,其中包括操作,信号,保护回路各电器无件的型号规格 开关柜内电器元件的型号,规格,数量 特殊环境条件下的要求 附件及备件的种类和数量 用户需要的特殊要求,订货时可以与制造厂协商
The information specified for ordering Primary scheme and the layout or arrangement sketch Principle diagram of secondary circuit, including the type and the spec of electric components in operation, Signal and protection circuit The type, specification and quantity of primary components in the cubicle Special ambient condition The sorts and the quantity of accessories and spare parts For special requirement, if any, please contact the manufacturer. |
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