EP1911050A1 - Composant électrique - Google Patents

Composant électrique

Info

Publication number
EP1911050A1
EP1911050A1 EP06763988A EP06763988A EP1911050A1 EP 1911050 A1 EP1911050 A1 EP 1911050A1 EP 06763988 A EP06763988 A EP 06763988A EP 06763988 A EP06763988 A EP 06763988A EP 1911050 A1 EP1911050 A1 EP 1911050A1
Authority
EP
European Patent Office
Prior art keywords
electrical component
housing
electrical
compensation element
insulating
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.)
Granted
Application number
EP06763988A
Other languages
German (de)
English (en)
Other versions
EP1911050B1 (fr
Inventor
Jörg FINDEISEN
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1911050A1 publication Critical patent/EP1911050A1/fr
Application granted granted Critical
Publication of EP1911050B1 publication Critical patent/EP1911050B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing

Definitions

  • the invention relates to an electrical component, in particular an electrical switch, in a liquid-filled housing of an electrical system, in particular egg ⁇ nem transformer, wherein the electrical component disposed in the housing and the electrical component is filled with an insulating and cooling medium. Furthermore, the invention relates to the arrangement of the electrical component in an electrical system, as well as their use in an electrical system.
  • expansion vessels are described for example in DE19527763C2. Disadvantage of these expansion vessels is the con ⁇ tact of the oil surface with the outside air, which requires the use of so-called dehumidifiers. In these air humidifiers, the air is passed over a desiccant and dehumidified. The adsorption capacity of the trock ⁇ voltage means (hygroscopicity) is used up here, and the desiccant must be replaced regularly. The pe ⁇ riodisch necessary visual inspections and regular exchange of the drying agent, especially in areas of high humidity, represents a significant cost factor (recommended maintenance intervals: every 3 months).
  • dehumidifiers do not offer a reliable seal against the absorption of moisture and oxygen by the insulating liquid, in particular at rapid cooling off ⁇ of the transformer.
  • expansion vessels for transformers which use a membrane in the main chamber for separating the insulating liquid from the ambient air. Such is described in DE3206368. Although these expansion vessels provide a secure conclusion of the insulating liquid from the ambient air, but still need a dehumidifier, which is associated with the disadvantages mentioned above. Furthermore, the contact with the ambient air leads to the aging of the membrane and thus causes technical uncertainties.
  • DE10224074A1 describes an arrangement for the pipeline leading into the step-type electrical component, which uses a labyrinth system for preventing the flow of gases to the expansion vessel.
  • this system does not provide a hermetic seal on the electrical component, nor can it fully penetrate gases into the pipeline prevent.
  • the complex piping arrangement to the oil expansion vessel remains required.
  • Object of the present invention is to avoid the disadvantages mentioned above and easy to prevent quickly and safely overpressure in the switch of a transformer.
  • At least one compensating element arranged in the housing is connected to the electrical component and compensates for volume changes of the insulating and cooling medium within the electrical component.
  • the invention enables a hermetic conclusion of the electrical component and thus a significant reduction in the aging of the insulating and cooling medium used in the electrical component.
  • the use of the arrangement according to the invention also makes it possible to dispense with dehumidifiers and associated pipelines. Furthermore, the invention solves the problem of gas accumulation in the pipeline to the expansion vessel of hermetically sealed electrical systems.
  • the volume of the insulating and cooling medium, eg oil, the elekt ⁇ step component is in proportion to the volume of fluid the electrical system very small. This circumstance makes the invention utilized by the volume compensation is not determined by external expansion vessels, but the Volu ⁇ men skilledung the insulating and cooling medium via suitable com- pensationsieri directly to the liquid volume of e- lektrischen system is transmitted. The compensation then take over the compensation provided for the volume compensation of the electrical system.
  • a further advantage is that the housing is hermetically sealed and at least one verbun ⁇ with the housing ⁇ dene compensating device for receiving an overpressure in the housing is used. Furthermore, the compensation element is integrated in the electrical component.
  • the compensation element is connected via a Rohrlei ⁇ tion with the electrical component.
  • the opening of the pipeline is positioned in the lower region of the electrical component in order to prevent any gases from entering the pipeline.
  • a blow-through and / or a shut-off and / or a drain valve is integrated in the electrical component, which open or close when exceeding or falling below specified pressures.
  • the compensation element is at least partially ⁇ of electrically conductive material and thus serves as a shield.
  • the compensation element is designed as elas ⁇ zier membrane.
  • the compensation element consists of metallic compensators and / or bellows.
  • the compensation element is provided with a spring element to produce a predetermined pressure difference between the housing and the electrical component.
  • the compensation element is protected by Minim ⁇ least a pressure wave shock from pressure waves.
  • the housing wall of the electrical component preferably serves partially or completely as a compensation element.
  • the electrical component is an electrical switch and the electrical system is a transformer.
  • the arrangement according to the invention is designed so that the electrical component is equipped with at least one device for collecting and discharging gases which form.
  • the electrical system is equipped with devices for detecting the level of the liquid and / or the insulating and
  • Coolant and / or equipped to detect pressures Coolant and / or equipped to detect pressures.
  • the electrical component is a ⁇ To set the body for receiving a small amount of additional Chen insulating and cooling medium equipped to the ⁇ at cerium reduction by switching operations and / or heating of the over- switching resistors resulting loss of the insulating and cooling to replace ⁇ medium.
  • the deformations caused by the change in volume on the compensation element serve to evaluate and / or display the existing insulating and cooling medium.
  • the design of the compensating elements arranged according to the invention is possible both as a metallic compensator, bladder accumulator, foil bag, plastic membrane or rubber compensator.
  • the problem of gas accumulation in the pipeline to the expansion vessel is achieved in that the pipeline for the transport of the gases ⁇ is separated from the connecting line between the electrical component and the compensation element.
  • this design allows melraumes the provision of a special gas collection, by which a too frequent response of Dru- ckentlastungsventiles and thus often associated zusharm ⁇ Liche oil loss avoided.
  • the electrical component is provided in the upper region with an additional volume for receiving a certain amount of additional insulating and cooling medium in order to replace the loss of the insulating and cooling medium resulting from decomposition by switching operations and / or heating of the switching resistors.
  • the entste in the decomposition of the insulating and cooling medium ⁇ Henden gases rise upwards and accumulate in this additional space.
  • the significantly larger gas volume leads to an overpressure in the electrical component.
  • the pressure in the electrical component exceeds a predetermined limit value, opens the CLOSED ⁇ during normal operation sene pressure relief valve and provides pressure relief to the surrounding atmosphere to the electrical component forth.
  • the inventive design of Kompensationsele- elements can be a complete end of the insulating and cooling medium of the electrical component of the at ⁇ phere / ambient air, without limitation, the oil expansion reach.
  • the insulating and cooling medium in the electrical component can be liquid or gaseous.
  • the outer expansion tank, the dehumidifier and the associated piping can be omitted.
  • the regular check of the condition of the desiccant in the dehumidifier can be saved and there are cost savings due to the elimination of the costly regular exchange of desiccant. Pollution and waste disposal problems by ⁇ spent desiccant be avoided.
  • the compensation elements do not come into contact with the externa ⁇ ßeren atmosphere, so that the corrosion of Metallkompensa- factors of moisture, and the aging of plastic membranes of the compensation elements under the action of moisture, oxygen and ozone is avoided. This will be significantly reduces the requirements for the compensation elements used.
  • the electrical component according to the invention is equipped with a gas discharge valve.
  • a gas discharge valve This may conveniently be carried out or controlled so that it responds to a small gas pressure, but not in concern of the insulating and cooling medium.
  • a constant pumping of the gases is possible.
  • a pressure valve and / or a conventional large-scale pressure relief valve To protect against overpressure is a pressure valve and / or a conventional large-scale pressure relief valve.
  • the compensation element is provided with a spring element in order to achieve a predetermined pressure difference between the two insulating fluids.
  • the speed of the necessary volume compensation when heated depends on the time constants of the electrical system and the electrical component as well as the operating conditions, but is always quite slow.
  • the attachment of pressure dampers in the pipeline to the compensation element is advantageous.
  • a gas discharge is slightly obstructing and delaying guidance of the gases to provide a pressure relief valve or other pressure reducing device.
  • the compensation element is equipped with a volume limitation in one or both directions.
  • a volume limitation in one or both directions.
  • FIG. 1 is a schematic side view of the electrical ⁇ rule system with an inventive electrical component within the housing;
  • FIG. 2 is a schematic side view of the electrical ⁇ rule system with an inventive electrical component on the housing cover;
  • FIG. 3 is a schematic plan view of the electrical system with the housing cover ⁇ arranged electrical component.
  • FIG. 4 is a schematic plan view of the electrical system with reasonable rule ⁇ arranged on the housing cover the electrical component;
  • FIG. 5 shows a schematic side view of the electrical ⁇ rule system with an inventive electrical component and flange on the overall housing cover;
  • FIG. 6a, .., 6d are schematic side views of the e- lektrischen component with differing ⁇ chen compensation elements
  • FIG. 7a, .., 7d are schematic side views of the e- lektrischen component with differing ⁇ chen compensation elements with a negative compensation
  • FIG. 8 schematic side view of the electrical ⁇ rule component with additional solids.
  • FIG. 1 shows an electrical component 1, which is arranged in the Ge ⁇ housing 2 of the electrical enclosure 3.
  • the housing 2 is an active part of the electrical system 3 as a transformer with at least one winding.
  • the space inside the housing 2 is filled with a liquid 5.
  • a compensation element 6 which is connected via a pipe 8 with the interior of the electrical component 1.
  • Expansion tanks are in particular oil conservator, Dehnradiatoren, compensators or body with gas cushion.
  • the channel for the removal of the gases from the connecting line between the electrical component and the compensation element 6 is disconnected.
  • the connection to the electrical component 1 takes place via a pipe 8 which leads at least so deeply into the electrical component 1 that the entry of gases into this pipe 8 is precluded.
  • Forming gases rise upwards and are led via a further pipeline 12 to a monitoring device. If the amount of gas is too large, gas is released via a valve 19.
  • FIG. 2 shows the direct arrangement of the compensation element 6 on the upper cover of the housing 2.
  • This embodiment requires only short pipes 8 for connection to the compensation element 6.
  • FIG. 3 shows a plan view of the electrical system 3 with a mounting of the compensating element 6 un ⁇ ter the lid of the housing 2 of the electrical system 3.
  • the space within the housing 2 Zung under Ausnut- which the transformer as the electrical system by round windings 3 and the electrical component 1 resulting ⁇ nen space optimally used.
  • FIG. 4 shows a similarity ⁇ che arrangement as FIG.
  • FIG. 5 illustrated embodiment of the invention shows the compensation element 6 with a flange 16 which is larger than the compensation element 6 and mounted directly under the cover of the housing 2. This arrangement allows an easy control in case of need and the Auswech ⁇ clauses of the compensating element 6. Between the compensation ⁇ element 6 and the electrical component 1 is an intermediate wall arranged 25th
  • the invention includes an electrical component 1, in which a compensation element 6 is attached directly to the electrical component 1 e.
  • the volume compensation is carried out by transmission of the change in volume of the insulating and cooling medium 4 of the electrical component 1 via compensating elements 6 on the housing 2.
  • the compensation element 6 for loading ⁇ standing part of the electrical component 1. Additional external Modules omitted and lead to a simplification of the entire electrical system. 3
  • Figure 6a shows an inventively embodied electrical ⁇ ULTRASONIC component 1 with a compensating element 6, which ⁇ di rectly on the switch as an electrical component 1 is mounted.
  • This compensating element 6 leads to a direct equalization of the internal pressure in the electrical component 1 with the pressure within the housing 2 of the electrical system 3. Forming gases rise upwards and are conducted via the pipeline 17 to a monitoring device 18.
  • FIGS. 6c and 6d show arrangements and embodiments of the compensation elements 6 which allow the use thereof as shielding electrodes.
  • metallic compensators are suitable due to their relatively large radii and the necessary diameter for the compensation.
  • FIG 7a an embodiment is shown which uses a nega tive ⁇ compensation element. 6
  • the compensation element 6 is not stretched when heated, but the increase in the volume of the insulating and cooling medium 4 of the electrical component 1 is achieved by compressing the compensation element 6 and pushing liquid 5 into the housing 2.
  • FIG. 7d shows the features of the compensating element 6 with a spring member 20 to a predetermined Druckdiffe ⁇ rence to achieve between the two insulating liquids.
  • FIG. 7 c shows an electrical component 1, in which the compensation element 6 contains a negative compensator and the targeted adjustment of a pressure difference between the insulating and cooling medium 4 of the electrical component 1 and the liquid 5 of the housing 2 of the electrical system 3 via a compensation element on the 6th acting additional adjustment force can be generated.
  • this force is generated by the weight of a Beschwe ⁇ ing body 21 and / or by a spring element.
  • the ⁇ ser weighting body 21 can be advantageously formed as an electrode.
  • FIG. FIG. 8 shows an electrical component 1, which is provided in the upper region of the electrical component 1 with an additional volume 22 for receiving a suitable amount of additional insulating and cooling medium 4 in order to reduce the loss of the product caused by decomposition, for example by heating of the overshoot resistors Insulating and cooling medium 4 to replace.
  • the gas produced during the decomposition rises upward and collects in this additional space of the volume body 22.
  • the considerably larger gas volume results in an overpressure in the electrical component 1. If the pressure in the electrical component 1 exceeds a predetermined limit value, it opens the closed during normal operation gas outlet 11c and provides a pressure ⁇ relief with the surrounding atmosphere ago.
  • a controller 23 controls that the gas release 11c responds only when gas is present in the head region of the electrical component 1.
  • the protection against pressure waves takes over the pressure relief valve 24.
  • the subsequent flow of the insulating and cooling medium 4 from the upper part of the electrical component 1 and the discharge of the resulting gas allow a substantial maintenance ⁇ freedom of the electrical component 1 in small size, complete completion of the insulating and cooling medium 4 from the atmosphere and without the need for an external oil expansion vessel.
  • vacuum switching cells 26 are arranged in the electrical component 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Transformer Cooling (AREA)

Abstract

Composant électrique (1), en particulier commutateur électrique, situé dans une caisse (2) remplie de liquide d'un appareil électrique (3), en particulier d'un transformateur, le composant électrique étant situé dans la caisse et étant rempli d'un milieu d'isolation et de refroidissement (4). La présente invention concerne en outre la mise en place dudit composant électrique dans un appareil électrique, ainsi que l'utilisation dudit composant dans un appareil électrique. L'utilisation d'un élément de compensation (6), par ex. sous forme de soufflet, permet la transmission des modifications de volume se produisant dans le composant électrique directement au liquide environnant (5) contenu dans la caisse.
EP06763988.0A 2005-07-01 2006-06-30 Transformatuer comprennant un commutateur électrique Not-in-force EP1911050B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005032017 2005-07-01
DE102005032016 2005-07-01
PCT/EP2006/063735 WO2007003595A1 (fr) 2005-07-01 2006-06-30 Composant électrique

Publications (2)

Publication Number Publication Date
EP1911050A1 true EP1911050A1 (fr) 2008-04-16
EP1911050B1 EP1911050B1 (fr) 2015-06-17

Family

ID=37114457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06763988.0A Not-in-force EP1911050B1 (fr) 2005-07-01 2006-06-30 Transformatuer comprennant un commutateur électrique

Country Status (4)

Country Link
US (1) US7847189B2 (fr)
EP (1) EP1911050B1 (fr)
CN (1) CN101248497B (fr)
WO (1) WO2007003595A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP1998344A1 (fr) * 2007-05-29 2008-12-03 Siemens Aktiengesellschaft Composant électronique, en particulier un condensateur, pour des applications dans des environnements haute pression
DE102008008891B3 (de) * 2008-02-13 2009-11-26 Areva Energietechnik Gmbh Elektrischer Transformator
DE102008027274B3 (de) * 2008-06-06 2009-08-27 Maschinenfabrik Reinhausen Gmbh Leistungstransformator mit Stufenschalter
EP2169690B1 (fr) 2008-09-24 2012-08-29 ABB Technology AG Compensateur de pression
KR101071003B1 (ko) 2009-12-21 2011-10-06 금오공과대학교 산학협력단 변압기용 내부온도 냉각장치
EP2610881B1 (fr) * 2011-12-28 2014-04-30 Siemens Aktiengesellschaft Compensateur de pression pour dispositif sous-marin
DE102013100263A1 (de) * 2013-01-11 2014-07-31 Maschinenfabrik Reinhausen Gmbh Laststufenschalter mit einer Verbindung zum Ölvolumen eines Transformators
DE102013100266A1 (de) * 2013-01-11 2014-07-17 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
EP2988311B1 (fr) * 2014-08-22 2021-04-28 ABB Schweiz AG Système électrique sous-marin compensé en pression
CN104319176A (zh) * 2014-09-26 2015-01-28 周才强 多片双金属片跳跃距离叠加突跳式温控开关
US10026537B2 (en) * 2015-02-25 2018-07-17 Onesubsea Ip Uk Limited Fault tolerant subsea transformer
US9945909B2 (en) 2015-02-25 2018-04-17 Onesubsea Ip Uk Limited Monitoring multiple subsea electric motors
US9727054B2 (en) 2015-02-25 2017-08-08 Onesubsea Ip Uk Limited Impedance measurement behind subsea transformer
US10065714B2 (en) 2015-02-25 2018-09-04 Onesubsea Ip Uk Limited In-situ testing of subsea power components
CN105161291A (zh) * 2015-10-13 2015-12-16 丹东欣泰电气股份有限公司 一种电容器外置膨胀器
JP6623893B2 (ja) * 2016-03-29 2019-12-25 三菱電機株式会社 油入電気機器
DK3343575T3 (da) * 2016-12-28 2020-06-22 Abb Schweiz Ag Trykkompensator i en undervandsinstallation
US10130009B2 (en) * 2017-03-15 2018-11-13 American Superconductor Corporation Natural convection cooling for power electronics systems having discrete power dissipation components
CN106683863A (zh) * 2017-03-17 2017-05-17 保定天威保变电气股份有限公司 一种变压器液袋压装的确定方法
CN116313671B (zh) * 2023-05-19 2023-07-25 国网山东省电力公司乐陵市供电公司 一种电力工程紧急切断保护装置

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Also Published As

Publication number Publication date
US7847189B2 (en) 2010-12-07
CN101248497B (zh) 2012-03-21
US20080196925A1 (en) 2008-08-21
WO2007003595A1 (fr) 2007-01-11
EP1911050B1 (fr) 2015-06-17
CN101248497A (zh) 2008-08-20

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