SI24191A2 - Set of triggering circuit for overvoltage protection - Google Patents
Set of triggering circuit for overvoltage protection Download PDFInfo
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- SI24191A2 SI24191A2 SI201300182A SI201300182A SI24191A2 SI 24191 A2 SI24191 A2 SI 24191A2 SI 201300182 A SI201300182 A SI 201300182A SI 201300182 A SI201300182 A SI 201300182A SI 24191 A2 SI24191 A2 SI 24191A2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T15/00—Circuits specially adapted for spark gaps, e.g. ignition circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T2/00—Spark gaps comprising auxiliary triggering means
- H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Predmet izuma je sklop vžignega vezja prenapetostne zaščite, tripolno povezanega z iskriščem prenapetostne zaščite, opremljenega s prvo vhodno sponko in drugo vhodno sponko, katerega bistvo je, da je pomožna elektroda iskrišča priključena v niz s prvim varistorjem in enim koncem sekundarnega navitja transformatorja, katerega drugi konec je povezan z drugo glavno elektrodo iskrišča in z drugo vhodno sponko, obenem pa je en konec primarnega navitja transformatorja priključen v niz s plinskim odvodnikom, drugim varistorjem, rezistorjem in kondenzatorjem, ki je povezan z drugim koncem primarnega navitja transformatorja, in priklopljen na drugo vhodno sponko, pri čemer je vozlišče, ki povezuje drugi varistor z rezistorjem povezano z vozliščem, ki povezuje prvo vhodno sponko s prvo glavno elektrodo iskrišča.Subject of the invention is a circuit of an ignition circuit of an overvoltage protection connected in triple with a spark plug of an overvoltage protection equipped with a first input terminal and a second input terminal, the essence of which is that the auxiliary electrode of the spark plug is connected to the array with the first varistor and one end of the secondary winding of the transformer, the end is connected to the second main electrode by the spark and the other input terminal, and at the same time one end of the primary winding of the transformer is connected to the array with a gas arrester, another varistor, a resistor and a capacitor connected to the other end of the primary winding of the transformer and connected to another an input terminal, wherein the node connecting the second resistor with a resistor is connected to a node connecting the first input terminal to the first main electrode sparking.
Description
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Sklop vžignega vezja prenapetostne zaščiteSurge protection ignition circuit assembly
OPIS IZUMADESCRIPTION OF THE INVENTION
Področje tehnikeThe field of technology
Tehnična rešitev se nanaša na sklop vžignega vezja prenapetostne zaščite, ki spada na področje sklopov električnih zaščitnih vezij, namenjenih omejitvi prenapetosti v zaščitenem razdelilnem omrežju. Prenapetostna zaščita je sestavljena iz iskrišča prenapetostne zaščite, opremljenega s prvo vhodno sponko, drugo vhodno sponko in tripolno povezanega z vžignim vezjem prenapetostne zaščite.The technical solution relates to an overvoltage protection circuit assembly that falls within the scope of electrical protection circuitry assemblies intended to limit overvoltage in a protected distribution network. Surge protection consists of a surge protection circuit equipped with a first input terminal, a second input terminal and a three-pole connected circuit with an overvoltage circuit.
Dosedanje stanje tehnikeThe prior art
Znana tehnična rešitev sklopa vžignih vezij prenapetostnih zaščit reši vzbujanje primarnega navitja transformatorja neposredno preko aktivacije plinskega odvodnika s prenapetostnim impulzom. Ta sklop je enostaven, pa vendar je njegovo pravilno delovanje odvisno od strmine prenapetostnega impulza in tako, v neugodnih okoliščinah, ko je strmina impulza majhna, torej pri majhni vrednosti deleža derivacije napetosti glede na derivacijo časa, pomožna elektroda iskrišča ni aktivirana in ne pride do vžiga iskre med prvo glavno elektrodo in drugo glavno elektrodo iskrišča, zaradi česar je tako koncipirana prenapetostna zaščita nefunkcionalna.A known technical solution for a circuit of surge arrester circuits solves the excitation of the primary winding of the transformer directly through the activation of a gas arrester with a surge pulse. This assembly is simple, but its proper operation depends on the surge pulse slope, and thus, in adverse circumstances when the pulse slope is small, that is, at a small value of the fraction of voltage derivation with respect to time derivation, the auxiliary spark electrode is not activated and does not occur spark ignition between the first main electrode and the second main electrode of the spark makes the design of the overvoltage protection so dysfunctional.
Ta primankljaj je delno rešen z drugimi uporabljenimi sklopi vžignega vezja prenapetostne zaščite z uporabo kapacitivnega delilnika in plinskega odvodnika. Primer bolj zapletenega sklopa s kapacitivnim delilnikom je dokument GB 1076679 „Improvements in Triggered Spark Gap Type Surge Arrestors for D.C. Circuits“, poenostavljen sklop vsebuje dokument US6111740 „Overvoltage protection system and overvoltage protection element for an overvoltage protection system“. Pomanjkljivost teh sklopov je oscilatomi značaj poteka toka v vžignem vezju prenapetostne zaščite. Pri prehodu oscilatomega toka v sekundarnem navitju transformatorja z ničlo lahko pride do ugasnitve iskre med prvo glavno elektrodo ali drugo glavno elektrodo ter pomožno elektrodo iskrišča, v takšnem primeru ne pride do aktivacije iskre med prvo glavnoThis deficiency is partially solved by other used circuit breaker circuits of overvoltage protection using a capacitive divider and a gas arrester. An example of a more complex capacitive divider assembly is document GB 1076679 "Improvements in Triggered Spark Gap Type Surge Arrestors for D.C. Circuits ", a simplified assembly contains document US6111740" Overvoltage protection system and overvoltage protection element for an overvoltage protection system ". The disadvantage of these circuits is the oscillatory character of the current flow in the ignition circuit of the overvoltage protection. The passage of the oscillatory current in the secondary winding of the transformer with zero may cause the spark to be extinguished between the first main electrode or the second main electrode and the auxiliary electrode of the spark, in which case no spark activation will occur during the first main
-2elektrodo in drugo glavno elektrodo iskrišča, kar ima za posledico odsotnost zaščitne funkcije prenapetostne zaščite. Namesto kapacitivnega delilnika se uporablja tudi delilnik s polprevodniškimi elementi, ki omejujejo napetost, npr. v dokumentu US4683514 „Surge voltage protective circuit arrangements“.The -2 electrode and the other main electrode spark, resulting in the absence of a surge protection function. Instead of a capacitive divider, a divider with semiconductor elements that limit voltage is used, e.g. in document US4683514 "Surge voltage protective circuit arrangements".
Drugi znani sklop vžignega vezja prenapetostne zaščite, ki je sestavni del dokumenta FR2902579 „Electrical installation protection device i.e. surge suppressor, has triggering unit passing spark gaps from blocking State, in which gaps oppose current circulation, to passing State, in which gaps permit fault current to flow in branches“, ali ga vsebuje dokument US2003/0007303 „Pressure-resistant encapsulated air-gap arrangement for the draining off of damaging perturbances due to overvoltages“, reši zgoraj omenjene pomanjkljivosti z uporabo kombiniranega delilnika z varistorjem in kondenzatorjem. Ta sklop vžignega vezja prenapetostne zaščite v precejšnji meri odstrani pomanjkljivosti prejšnjih sklopov, a se še vedno ohranja oscilatomi značaj poteka toka v vžignem vezju prenapetostne zaščite in torej problem možne ugasnitve iskre med prvo glavno elektrodo in drugo glavno elektrodo iskrišča, kar ima za posledico odsotnost zaščitne funkcije prenapetostne zaščite.Another known surge protector ignition circuit assembly which is an integral part of document FR2902579 'Electrical installation protection device i.e. surge suppressor, has a triggering unit passing spark gaps from a blocking State, in which gaps oppose current circulation, to a passing state, in which gaps permit fault current to flow in branches, "or contained in document US2003 / 0007303" Pressure-resistant encapsulated air- gap arrangement for the draining off of damaging perturbances due to overvoltages', resolves the aforementioned disadvantages by using a varistor and capacitor combined divider. This circuit of the overvoltage protection circuit eliminates to a great extent the disadvantages of the previous circuits, but the oscillatomy character of the current flow in the overvoltage protection circuit is still preserved and therefore the problem of possible spark off between the first main electrode and the second main electrode sparkles, resulting in the absence of a protective circuit. surge protection functions.
Bistvo tehnične rešitveThe essence of the technical solution
Omenjene pomanjkljivosti v precejšnji meri odstrani sklop vžignega vezja prenapetostne zaščite, tripolno povezanega z iskriščem prenapetostne zaščite, opremljenega s prvo vhodno sponko in drugo vhodno sponko, katerega bistvo je, da je pomožna elektroda iskrišča priključena v niz s prvim varistorjem in enim koncem sekundarnega navitja transformatorja, katerega drugi konec je povezan z drugo glavno elektrodo iskrišča in z drugo vhodno sponko, obenem pa je en konec primarnega navitja transformatorja priključen v niz s plinskim odvodnikom, drugim varistorjem, rezistorjem in kondenzatorjem, ki je povezan z drugim koncem primarnega navitja transformatorja, in priklopljen na drugo vhodno sponko, pri čemer je vozlišče, ki povezuje drugi varistor z rezistorjem povezano z vozliščem, ki povezuje prvo vhodno sponko s prvo glavno elektrodo iskrišča.These drawbacks are largely eliminated by an overvoltage ignition circuit assembly triple-coupled to a surge protector spark equipped with a first input terminal and a second input terminal, the essence of which is that the auxiliary spark electrode is connected to a series with a first varistor and one end of the secondary winding , the other end of which is connected to the second main electrode of the spark and the second input terminal, and at the same time one end of the primary winding of the transformer is connected to a string by a gas arrester, another varistor, resistor and capacitor connected to the other end of the primary winding of the transformer, and connected to the second input terminal, the node connecting the second varistor to the resistor being connected to the node connecting the first input terminal to the first main spark electrode.
-3Prenapetostno zaščito tvori iskrišče, opremljeno s prvo glavno elektrodo, drugo glavno elektrodo in eno pomožno elektrodo za lažji preboj med prvo glavno elektrodo in drugo glavno elektrodo, čemur je namenjen sklop vžignega vezja prenapetostne zaščite.-3The surge protector is formed by a spark equipped with the first main electrode, the second main electrode and one auxiliary electrode to facilitate the break between the first main electrode and the second main electrode, for which the circuit of the overvoltage protection ignition circuit is intended.
Prednosti tega sklopa vžignega vezja prenapetostne zaščite so v izboljšani sposobnosti vžiga zaradi funkcije tistega dela sklopa vžignega vezja prenapetostne zaščite, ki se nahaja na primarni strani transformatorja.The advantages of this surge arrester circuitry are the improved ignition ability due to the function of that part of the surge arrester circuitry located on the primary side of the transformer.
Za varno delovanje sklopa vžignega vezja prenapetostne zaščite je zaželeno, da bi bil termični odklopnik, povezan s toplotno vezavo z drugim varistorejm, ali priključen v niz z drugim varistorjem, ali vstavljen v spojnik med vozlišče, ki povezuje drugi varistor z rezistorjem in vozlišče, ki povezuje prvo vhodno sponko s prvo glavno elektrodo iskrišča, ali da bi bil termični odklopnik vstavljen med primarno navitje transformatorja in plinskega odvodnika.For the safe operation of an overvoltage protection circuit assembly, it is desirable that a thermal circuit breaker coupled to a thermal circuit with another varistor be connected to a series with another varistor or inserted into a coupler between a node connecting the second varistor with a resistor and a node that connects the first input terminal to the first main spark electrode, or that a thermal breaker be inserted between the primary winding of the transformer and the gas arrester.
Omenjena ugodna izvedba sklopa vžignega vezja prenapetostne zaščite, ki je dopolnjena s termičnim odklopnikom, omogoča odklop vžignega vezja prenapetostne zaščite od zaščitenega razdelilnega omrežja v primeru toplotne preobremenitve in nedovoljenega segrevanja ali segrevanja drugega varistorja ter tako preprečuje njegovo poškodovanje in škodo, ki bi nastala kot posledica poškodovanja brezhibne prenapetostne zaščite.The aforementioned advantageous embodiment of the surge protection ignition circuit assembly, which is supplemented by a thermal circuit breaker, enables the overvoltage protection circuit to be disconnected from the protected distribution network in case of thermal overload and unauthorized heating or heating of another varistor, thereby preventing its damage and damage as a result. damage to faultless surge protection.
Pregled slik na načrtihViewing pictures on plans
Tehnična rešitev bo natančneje pojasnjena s pomočjo načrtov, na katerih slika 1 prikazuje blokovno shemo sklopa iskrišča prenapetostne zaščite, opremljenega s prvo vhodno sponko, drugo vhodno sponko in tripolno povezanega z vžignim vezjem.The technical solution will be explained in more detail by means of the plans in which Figure 1 shows a block diagram of an overvoltage protection spark gap assembly equipped with a first input terminal, a second input terminal and three-pole connected to the ignition circuit.
Slika 2 prikazuje principno shemo sklopa iskrišča prenapetostne zaščite in vžignega vezja.Figure 2 shows a schematic diagram of an assembly of a surge protection circuit and an ignition circuit.
Slika 3 prikazuje principno shemo sklopa iskrišča prenapetostne zaščite in vžignega vezja, opremljenega s termičnim odklopnikom, ki je s toplotno vezavo povezanFigure 3 shows a schematic diagram of a circuit of a surge protection circuit and an ignition circuit equipped with a thermal circuit-breaker connected to a thermal circuit
z drugim varistorjem ter hkrati vstavljen med drugi varistor in vozlišče, ki povezuje prvo vhodno sponko z rezistorjem.with the second varistor and inserted simultaneously between the second varistor and the node that connects the first input terminal to the resistor.
Slika 4 prikazuje principno shemo sklopa iskrišča prenapetostne zaščite in vžignega vezja, opremljenega s termičnim odklopnikom, ki je s toplotno vezavo povezan z drugim varistorjem ter hkrati vstavljen med plinski odvodnik in drugi varistor.Figure 4 shows a schematic diagram of a circuit of a surge protection circuit and an ignition circuit equipped with a thermal circuit breaker, which is thermally coupled to another varistor and simultaneously inserted between the gas arrester and the second varistor.
Slika 5 prikazuje principno shemo sklopa iskrišča prenapetostne zaščite in vžignega vezja, opremljenega s termičnim odklopnikom, ki je s toplotno vezavo povezan z drugim varistorjem ter hkrati vstavljen v spojnik med vozlišče, ki povezuje drugi varistor z rezistorjem in vozlišče, ki povezuje prvo vhodno sponko s prvo glavno elektrodo iskrišča.Figure 5 shows a schematic diagram of a circuit of a surge protection circuitry and an ignition circuit equipped with a thermal circuit breaker, which is thermally coupled to a second varistor and simultaneously inserted into a coupler between a node connecting the second varistor with a resistor and a node connecting the first input terminal to the first main spark electrode.
Slika 6 prikazuje principno shemo sklopa iskrišča prenapetostne zaščite in vžignega vezja, opremljenega s termičnim odklopnikom, ki je s toplotno vezavo povezan z drugim varistorjem ter hkrati vstavljen med primarno navitje transformatorja in plinski odvodnik.Figure 6 shows a schematic diagram of a circuit of a surge protection circuit and an ignition circuit equipped with a thermal circuit breaker, which is thermally coupled to another varistor and simultaneously inserted between the primary winding of the transformer and the gas arrester.
Spisek predmetnih oznak vžigno vezje prva vhodna sponka druga vhodna sponka iskrišče prva glavna elektroda druga glavna elektroda pomožna elektroda prvi varistor drugi varistor plinski odvodnik rezistor kondenzator transformator sekundarno navitje primarno navitjeList of object codes ignition circuit first input terminal second input terminal spark first first electrode second main electrode auxiliary electrode first varistor second varistor gas arrester resistor transformer secondary winding primary winding
-5 16 toplotna vezava termični odklopnik-5 16 thermal circuit thermal circuit breaker
Primeri izvedbe tehnične rešitveExamples of technical solution implementation
Prenapetostna zaščita je sestavljena iz (glej sliko 1) iskrišča 4 prenapetostne zaščite, opremljenega s prvo vhodno sponko 2, drugo vhodno sponko 3 in tripolno povezanega z vžignim vezjem 1 prenapetostne zaščite.The surge protector consists of (see Figure 1) the spark gap 4 of the surge protector equipped with a first input terminal 2, a second input terminal 3 and a three pole connected to the ignition circuit 1 of the surge protector.
Za osnovni sklop vžignega vezja 1 prenapetostne zaščite (glej sliko 2) je značilno, da je pomožna elektroda 7 iskrišča 4 priključena v niz s prvim varistorjem 8 in enim koncem sekundarnega navitja 14 transformatorja 13, njegov drugi konec je povezan z drugo glavno elektrodo 6 iskrišča 4 in z drugo vhodno sponko 3, pri tem je en konec primarnega navitja 15 transformatorja 13 priključen v niz s plinskim odvodnikom 10, drugim varistorjem 9, rezistorjem 11 in kondenzatorjem 12, ki je povezan z drugim koncem primarnega navitja 15 transformatorja 13, ki je priklopljen na drugo vhodno sponko 3, pri čemer je vozlišče, ki povezuje drugi varistor 9 z rezistorjem 11 povezano z vozliščem, ki povezuje prvo vhodno sponko 2 s prvo glavno elektrodo 5 iskrišča 4.The basic circuit of the ignition circuit 1 of the overvoltage protection (see Figure 2) is characterized in that the auxiliary electrode 7 of the spark gap 4 is connected in series with the first varistor 8 and one end of the secondary winding 14 of the transformer 13, its other end connected to the second main spark electrode 6 4 and another input terminal 3, one end of the primary winding 15 of the transformer 13 being connected to a series by a gas arrester 10, another varistor 9, a resistor 11 and a capacitor 12 connected to the other end of the primary winding 15 of the transformer 13, which is connected to a second input terminal 3, wherein a node connecting the second varistor 9 to a resistor 11 is connected to a node connecting the first input terminal 2 to the first spark electrode 5 main electrode 5.
Vrednost upornosti rezistorja 11 je najmanj dvakratni kvadratni koren deleža samoindukcije primarnega navitja 15 transformatorja 13 in kapacitete kondenzatorja 12.The resistor value of resistor 11 is at least twice the square root of the self-induction ratio of the primary winding 15 of the transformer 13 and the capacitor capacity 12.
Ugodni sklopi vžignega vezja 1 prenapetostne zaščite so opremljeni s termičnim odklopnikom 17, ki je s toplotno vezavo povezan 16 z drugim varistorjem 9. V najenostavnejši izvedbi je lahko termični odklopnik 17 realiziran s termično varovalko.The advantageous circuit breakers 1 of the overvoltage protection are provided with a thermal circuit breaker 17 which is connected to the other varistor 9 by thermal bonding. In the simplest embodiment, the thermal circuit breaker 17 may be realized with a thermal fuse.
Ugodni sklop vžignega vezja 1 prenapetostne zaščite (glej sliko 3) je opremljen s termičnim odklopnikom J/7, ki je s toplotno vezavo povezan 16 z drugim varistorjem 9 in hkrati vstavljen med drugi varistor 9 in vozlišče, ki povezuje prvo vhodno sponko 2 z rezistorjem 11.The advantageous ignition circuit 1 of the surge protector (see Figure 3) is provided with a thermal circuit breaker J / 7, which is thermally coupled 16 to the second varistor 9 and simultaneously inserted between the second varistor 9 and a node connecting the first input terminal 2 to the resistor 11.
Ugodni sklop vžignega vezja 1 prenapetostne zaščite (glej sliko 4) je opremljen s termičnim odklopnikom 17, ki je s toplotno vezavo povezan 16 z drugim varistorjem 9 in hkrati vstavljen med plinski odvodnik 10 in drugi varistor 9.The advantageous ignition circuit 1 of the surge protector (see Fig. 4) is provided with a thermal circuit breaker 17 which is thermally coupled 16 to another varistor 9 and simultaneously inserted between the gas arrester 10 and the second varistor 9.
-6Ugodni sklop vžignega vezja 1 prenapetostne zaščite (glej sliko 5) je opremljen s termičnim odklopnikom 17, ki je s toplotno vezavo povezan 16 z drugim varistorjem 9 in hkrati vstavljen v spojnik med vozlišče, ki povezuje drugi varistor 9 z rezistorjem 11 in vozlišče, ki povezuje prvo vhodno sponko 2 s prvo glavno elektrodo 5 iskrišča 4.-6 The overvoltage protection ignition circuit 1 assembly (see Figure 5) is provided with a thermal circuit breaker 17 which is thermally coupled 16 to another varistor 9 and simultaneously inserted into a coupler between a node connecting the second varistor 9 to the resistor 11 and the node, connecting the first input terminal 2 to the first main electrode 5 of the spark gap 4.
Ugodni sklop vžignega vezja 1 prenapetostne zaščite (glej sliko 6) je opremljen s termičnim odklopnikom 17, ki je s toplotno vezavo povezan 16 z drugim varistorjem 9 in hkrati vstavljen med primarno navitje 15 transformatorja 13 in plinski odvodnik 10.The advantageous ignition circuit 1 of the surge protector (see Figure 6) is provided with a thermal circuit breaker 17 which is thermally coupled 16 to another varistor 9 and simultaneously inserted between the primary winding 15 of the transformer 13 and the gas arrester 10.
Za funkcijo osnovnega sklopa vžignega vezja I prenapetostne zaščite (glej sliko 2) je značilno da, je v stanju brez prenapetosti med prvo vhodno sponko 2 in drugo vhodno sponko 3 obratovalna napetost zaščitenega razdelilnega omrežja, ki ne zadošča za vžig plinskega odvodnika 10, ki je priklopljen na prvo vhodno sponko 2 preko drugega varistorja 9 in na drugo vhodno sponko 3 preko primarnega navitja 15 transformatorja 13. Če se med prvo vhodno sponko 2 in drugo vhodno sponko 3 pojavi impulzna prenapetost, pride do vžiga plinskega odvodnika 10, pri čemer drugi varistor 9 občutno zmanjša svojo upornost in tokovni impulz, ki gre skozi primarno navitje 15 transformatorja 13 inducira v njegovem sekundarnem navitju 14 visoko napetost, ki je privedena preko prvega varistorja 8 na pomožno elektrodo 7 in posledično pride do vžiga iskre med pomožno elektrodo 7 in prvo glavno elektrodo 5 ali drugo glavno elektrodo 6 iskrišča 4. K ohranitvi te iskre prispeva prvi varistor 8 s tem, da občutno zmanjša svojo upornost. Nato, kot posledica ionizacije prostora med prvo glavno elektrodo 5 in drugo glavno elektrodo 6 iskrišča 4, pride do vžiga iskre med prvo glavno elektrodo 5 in drugo glavno elektrodo 6 iskrišča 4. Zaradi padca napetosti med prvo glavno elektrodo 5 in drugo glavno elektrodo 6 iskrišča 4 pade tok, ki prehaja skozi pomožno elektrodo 7, prvi varistor 8 občutno poveča svojo upornost, s čimer se vrne v začetno stanje. Odvodni tok iz napolnjenega kondenzatorja 12 prispeva k povečanju začetne strmine tokovnega impulza preko primarnega navitja 15 transformatorja 13 in s tem pride do povečanja inducirane napetosti v njegovem sekundarnem navitju 14, s čimer se doseže izboljšanje zanesljivosti aktivacijskega, oziroma ionizacij skega učinka pomožne elektrode 7. Kondenzator, 12 napolnjen preko rezistorja, 11 s svojo kapaciteto integrira kratke prenapetostne impulze med prvo vhodno sponko 2 in drugo vhodno sponko 3, ki ne bi zadoščali za vžig plinskega odvodnika 10 in posledično za vžig iskre med prvo glavno elektrodo 5 in drugoThe function of the basic circuit of the ignition circuit I of the overvoltage protection (see figure 2) is characterized by the fact that, in the no-voltage state, between the first input terminal 2 and the second input terminal 3, the operating voltage of the protected distribution network is insufficient to ignite the gas arrester 10, which is connected to the first input terminal 2 via the second varistor 9 and to the second input terminal 3 via the primary winding 15 of the transformer 13. If a pulse surge occurs between the first input terminal 2 and the second input terminal 3, the gas arrester 10 is ignited, with the second varistor 9 substantially reduces its resistance and a current pulse passing through the primary winding 15 of the transformer 13 induces in its secondary winding 14 a high voltage, which is fed through the first varistor 8 to the auxiliary electrode 7 and consequently ignites a spark between the auxiliary electrode 7 and the first main electrode 5 or the second main electrode 6 of the spark gap 4. The first 8th varistor contributes to the preservation of this spark. em to significantly reduce its resistance. Then, as a result of the ionization of the space between the first main electrode 5 and the second main electrode 6 of the spark 4, a spark ignites between the first main electrode 5 and the second main electrode 6 of the spark 4. Due to the voltage drop between the first main electrode 5 and the second main electrode 6 of the spark 4 drops the current passing through the auxiliary electrode 7, the first varistor 8 significantly increases its resistance, thereby returning to its initial state. The discharge current from the charged capacitor 12 contributes to the increase of the initial slope of the current pulse through the primary winding 15 of the transformer 13, thereby increasing the induced voltage in its secondary winding 14, thereby improving the reliability of the activation or ionization effect of the auxiliary electrode 7. The capacitor , 12 charged through a resistor, 11 integrates with its capacity short-circuit pulses between the first input terminal 2 and the second input terminal 3, which would not be sufficient to ignite the gas arrester 10 and, consequently, to ignite a spark between the first main electrode 5 and the second
-7 glavno elektrodo 6 iskrišča 4 ter tako zagotavlja ohranitev zaščitnega učinka tudi v primeru zaporedja krajših prenapetostnih impulzov. Rezistor 11 ublaži oscilatomi značaj poteka toka v vžignem vezju 1 prenapetostne zaščite, ki je določen z obstojem resonančnega vezja, kije tvorjeno s samoindukcijo primarnega navitja 15 transformatorja 13 in kapaciteto kondenzatorja 12. Ugodne izvedbe sklopa vžignega vezja 1 prenapetostne zaščite (glej slike 3 do 6) so dopolnjene s termičnim odklopnikom 17, ki omogoča odklop vžignega vezja 1 prenapetostne zaščite od zaščitenega razdelilnega omrežja v primeru toplotne preobremenitve in nedovoljenega segrevanja ali segrevanja drugega varistorja 9.-7 the main electrode 6 of the spark 4, thus ensuring the preservation of the protective effect even in the case of a series of shorter surge pulses. The resistor 11 mitigates the oscillatory character of the flow pattern in the overvoltage protection circuit 1, which is determined by the existence of a resonant circuit formed by the self-induction of the transformer primary coil 15 and the capacitor 12. A favorable embodiment of the overvoltage circuit 3 assembly (see Figs. 3) ) are supplemented by a thermal circuit breaker 17 which allows the overvoltage circuit 1 to be disconnected from the protected distribution network in the event of thermal overload and unauthorized heating or heating of another varistor 9.
Ekvivalentna funkcija sklopa vžignega vezja 1 prenapetostne zaščite nastane tudi pri razvrščanju niza elementov vezja drugi varistor 9 in plinski odvodnik K), in/ali rezistor 11 in kondenzator 12, v obratnem vrstnem redu kot je prikazano na slikah 2 do 6.The equivalent function of the overvoltage protection circuit 1 assembly also occurs when classifying a series of circuit elements a second varistor 9 and a gas arrester K), and / or a resistor 11 and a capacitor 12, in the reverse order as shown in Figures 2 to 6.
Uporabnost v industrijiApplicability in industry
Sklop vžignega vezja prenapetostne zaščite je po tej tehnični rešitvi uporaben povsod tam, kjer razdelilna omrežja ogrožajo prenapetosti. V primerjavi z znanimi sklopi izkazuje izboljšano sposobnost vžiga in pri namestitvi termičnega odklopnika preprečuje škodo, ki bi nastala kot posledica poškodovanja brezhibne prenapetostne zaščite.According to this technical solution, an overvoltage protection ignition circuit assembly is applicable wherever the distribution networks are at risk of overvoltage. Compared to known assemblies, it shows improved ignition capability and prevents damage resulting from damage to faultless surge protection when installing a thermal circuit breaker.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZ201226602U CZ25171U1 (en) | 2012-08-28 | 2012-08-28 | Circuit arrangement of over-voltage protection firing circuit |
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| SI24191A2 true SI24191A2 (en) | 2014-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI201300182A SI24191A2 (en) | 2012-08-28 | 2013-07-02 | Set of triggering circuit for overvoltage protection |
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| AU (1) | AU2013101333A4 (en) |
| CZ (1) | CZ25171U1 (en) |
| DE (1) | DE202013103823U1 (en) |
| IT (1) | ITAN20130073U1 (en) |
| SI (1) | SI24191A2 (en) |
| SK (1) | SK6943Y1 (en) |
| ZA (1) | ZA201306018B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CZ305623B6 (en) * | 2014-01-03 | 2016-01-13 | Saltek S.R.O. | Circuit arrangement of overvoltage protection firing circuit with asymmetrical element |
| CZ26520U1 (en) | 2014-01-03 | 2014-02-24 | Saltek S.R.O. | Circuit arrangement of over-voltage protection circuit with asymmetric element |
| DE102015114504A1 (en) | 2015-08-31 | 2017-03-02 | Epcos Ag | Mehrfachfunkenstreckenableiter |
| CN114123106B (en) * | 2021-11-29 | 2022-10-25 | 西安交通大学 | Transformer light gas protection method and system based on gas density characteristics, storage medium and computing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES318996A1 (en) | 1964-12-11 | 1966-04-16 | Gen Electric | A continuous current circuit provision that includes a pair of opposite polarity conductors with a brush pulse deviator. (Machine-translation by Google Translate, not legally binding) |
| US4683514A (en) | 1984-10-03 | 1987-07-28 | The M-O Valve Company Limited | Surge voltage protective circuit arrangements |
| DE19803636A1 (en) | 1998-02-02 | 1999-08-05 | Phoenix Contact Gmbh & Co | Surge protection system |
| DE20020771U1 (en) | 2000-02-22 | 2001-02-15 | Dehn & Soehne | Pressure proof encapsulated spark gap arrangement for leading off damaging disturbance variables due to overvoltages, has two opposing electrodes |
| FR2902579B1 (en) | 2006-06-19 | 2008-10-03 | Soule Prot Surtensions Sa | OVERVOLTAGE PROTECTION DEVICE ASSOCIATED IN SERIES WITH MULTIPLE SIMULTANEOUS ACTUATION LATHERS AND METHODS RELATING THERETO |
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2012
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- 2013-08-23 DE DE201320103823 patent/DE202013103823U1/en not_active Expired - Lifetime
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| SK500882013U1 (en) | 2014-05-06 |
| ZA201306018B (en) | 2014-03-26 |
| AU2013101333A4 (en) | 2014-01-09 |
| SK6943Y1 (en) | 2014-11-04 |
| DE202013103823U1 (en) | 2013-09-13 |
| CZ25171U1 (en) | 2013-04-04 |
| ITAN20130073U1 (en) | 2014-03-01 |
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Effective date: 20140422 |