CN104283203A - Pre-ionization over-voltage protection device for multi-gap metal ceramic gas discharge tube - Google Patents
Pre-ionization over-voltage protection device for multi-gap metal ceramic gas discharge tube Download PDFInfo
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- CN104283203A CN104283203A CN201410525716.3A CN201410525716A CN104283203A CN 104283203 A CN104283203 A CN 104283203A CN 201410525716 A CN201410525716 A CN 201410525716A CN 104283203 A CN104283203 A CN 104283203A
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Abstract
The invention discloses a pre-ionization over-voltage protection device for a multi-gap metal ceramic gas discharge tube and relates to over-voltage protection technologies of power systems. The pre-ionization over-voltage protection device comprises the multi-gap metal ceramic gas discharge tube and a pulse transformer. The multi-gap metal ceramic gas discharge tube is provided with an end electrode A, an end electrode A' and n middle electrodes, and a secondary coil of the pulse transformer comprises n sub-coils and n resistor and capacitor parallel combinations, wherein each sub-coil is connected with one resistor and capacitor parallel combination in series to form a coil, resistor and capacitor combination, and the n coil, resistor and capacitor combinations are connected in series. All the middle electrodes are correspondingly connected with the tail ends of the coil, resistor and capacitor combinations of the same serial numbers one to one in an electric conduction mode. A primary coil of the pulse transformer is connected with one resistor and capacitor parallel combination and one switch component in series. The switch component is used for starting the primary loop of the pulse transformer, and after boosting, current passes through the resistor and capacitor combinations of the secondary sub-coils of the pulse transformer and meanwhile exerts on the multi-gap discharge tube; in this way, all gaps are broken down at the same time to reduce limiting voltage and improve the protection level.
Description
Technical field
The present invention relates to power-supply system overvoltage protection technology, particularly relate to preionization multi-clearance ceramet gas discharge tube overvoltage protection.
Background technology
Multi-clearance ceramet gas discharge tube (hereinafter referred to as M-GDT) comprises termination electrode A and termination electrode A ', also comprises n target K1 ~ Kn, wherein n >=1, is provided with three independent gaps between two adjacent electrodes of this M-GDT simultaneously.M-GDT is larger than single gap gas discharge tube (hereinafter referred to as GDT) through-current capability, residual voltage is low, the high and good stability without afterflow, reliability.Take M-GDT as critical piece, can form overvoltage protective unit, multiple such overvoltage protective unit can form lightning protection for power supply (also known as lightning arrester or Surge Protector).
Chinese patent discloses multi-clearance ceramet gas discharge tube over-voltage protection module (publication number 101753858B), the termination electrode A of multi-clearance ceramet gas discharge tube conducts electricity with the phase line L of power supply and is connected, the termination electrode A ' of multi-clearance ceramet gas discharge tube and the zero line N(of power supply or protecting field PE) conduct electricity and be connected; Target K1 ~ the Kn of multi-gap metal gas discharge tube conducts electricity with piezo-resistance MOV1 ~ MOVn respectively and is connected, and the other end of piezo-resistance MOV1 ~ MOVn conducts electricity with the termination electrode A of multi-gap metal gas discharge tube or termination electrode A ' and is connected (as shown in Figure 1).This multi-clearance ceramet gas discharge tube over-voltage protection module has the following disadvantages:
Multi-clearance ceramet gas discharge tube is equivalent to the series connection of multiple discharge tube and uses, the gap A-K1 of its adjacent electrode, K1-K2 ..., Kn-A ' conducting successively (other end of piezo-resistance MOV1 ~ MOVn conducts electricity with the termination electrode A of multi-gap metal gas discharge tube and is connected), or A '-K1, K1-K2 ..., Kn-A conducting successively (other end of piezo-resistance MOV1 ~ MOVn conducts electricity with the termination electrode A ' of multi-gap metal gas discharge tube and is connected), its deboost is equivalent to the interelectrode pulse breakdown voltage of A-K1 or A '-K1.Although the interelectrode pulse breakdown voltage of A-K1 or A '-K1 is more much lower than the pulse breakdown voltage between GDT termination electrode; but the interelectrode pulse breakdown voltage of A-K1 or A '-K1 exists due to the pressure ratio of piezo-resistance MOV; deboost is still very high, and level of protection is still lower.Visible, the deboost of above-mentioned clearance ceramet gas discharge tube over-voltage protection module is still very high, and piezo-resistance also exists disaster hidden-trouble when heat departs from unreliable simultaneously.
Summary of the invention
The technical issues that need to address of the present invention are; overcome the deficiency that deboost is higher, level of protection is on the low side that above-mentioned multi-clearance ceramet gas discharge tube over-voltage protection module exists; a kind of preionization multi-clearance ceramet gas discharge tube overvoltage protection is provided; its deboost obviously reduces, and level of protection significantly improves.
For this reason, preionization multi-clearance ceramet gas discharge tube overvoltage protection of the present invention adopts the following two kinds technical scheme.First, the first technical scheme is introduced:
Preionization multi-clearance ceramet gas discharge tube overvoltage protection, is characterized in that: comprise multi-clearance ceramet gas discharge tube and pulse transformer;
This multi-clearance ceramet gas discharge tube has termination electrode A and termination electrode A ', also has n target, wherein n >=1; The termination electrode A of multi-clearance ceramet gas discharge tube conducts electricity with the phase line of power supply and is connected; The termination electrode A ' of multi-clearance ceramet gas discharge tube conducts electricity with the zero line of power supply or protecting field and is connected;
The secondary coil of pulse transformer comprises n subcoil, wherein n >=1; Also comprise the parallel combination of resistance and electric capacity, and be called the parallel combination of resistance capacitance, the parallel combination of described resistance capacitance has n, wherein n >=1; The parallel combination of resistance capacitance described in each subcoil and is in series and is called that coil capacitance-resistance combines, and one end be connected of not conducting electricity with the parallel combination of described resistance capacitance of subcoil is called the head end that described coil capacitance-resistance combines, one end be connected of not conducting electricity with subcoil of the parallel combination of described resistance capacitance is called the tail end that described coil capacitance-resistance combines, described coil capacitance-resistance combination has n, wherein n >=1 equally; The described coil capacitance-resistance combination of n is in series, and according to head end, and---order of tail end---head end---tail end conducts electricity connection successively; The head end that termination electrode A and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that termination electrode A ' and the winding capacitance-resistance described in n-th of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that each target of multi-clearance ceramet gas discharge tube combines with the described coil capacitance-resistance of same sequence number correspondingly conducts electricity and is connected;
The primary coil of pulse transformer only has one, one end conduction connection one resistance of primary coil and the parallel combination of electric capacity, the head end that this resistance and the other end of the parallel combination of electric capacity and coil capacitance-resistance described in the termination electrode A of multi-clearance ceramet gas discharge tube and the 1st combine conducts electricity and is connected; One end of primary coil other end conduction connection one switching device of pulse transformer, the other end of this switching device and the termination electrode A ' of multi-clearance ceramet gas discharge tube conduct electricity to be connected and to conduct electricity with the tail end that coil capacitance-resistance described in n-th combines and are connected.
Further, one or more independent gap is provided with between adjacent two targets of described multi-clearance ceramet gas discharge tube.
Further, the termination electrode A ' of described multi-gap metal gas discharge tube is provided with hot release unit, and termination electrode A ' is connected with zero line or protecting field by described hot release unit; When the temperature of the termination electrode A ' of multi-gap metal gas discharge tube reaches disengaging threshold values, described hot release unit departs from from termination electrode A ', thus open end electrode A ' be connected with the conduction of zero line or protecting field.
Further, the side of described hot release unit is provided with sensitive switch, and described sensitive switch is associated with remote signalling interface;
Described hot release unit starts sensitive switch while the termination electrode A ' of described multi-gap metal gas discharge tube departs from, to remote signalling interface outputting alarm signal when sensitive switch starts.
Further, described switching device is gas discharge tube or semiconductor switch components and parts.
Below, the second technical scheme is introduced:
6, preionization multi-clearance ceramet gas discharge tube overvoltage protection, is characterized in that: comprise multi-clearance ceramet gas discharge tube and pulse transformer;
This multi-clearance ceramet gas discharge tube has termination electrode A and termination electrode A ', also has n target, wherein n >=1; The termination electrode A of multi-clearance ceramet gas discharge tube conducts electricity with the phase line of power supply and is connected; The termination electrode A ' of multi-clearance ceramet gas discharge tube conducts electricity with the zero line of power supply or protecting field and is connected;
The secondary coil of pulse transformer comprises 2 subcoils; Also comprise the parallel combination of resistance and electric capacity, and be called the parallel combination of resistance capacitance, the parallel combination of described resistance capacitance is 2; The parallel combination of resistance capacitance described in each subcoil and is in series and is called that coil capacitance-resistance combines, and one end be connected of not conducting electricity with the parallel combination of described resistance capacitance of subcoil is called the head end that described coil capacitance-resistance combines, one end be connected of not conducting electricity with subcoil of the parallel combination of described resistance capacitance is called the tail end that described coil capacitance-resistance combines, 2 described coil capacitance-resistances combinations are in series, and according to head end, and---order of tail end---head end---tail end conducts electricity connection successively; The head end that termination electrode A and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that termination electrode A ' and the coil capacitance-resistance described in the 2nd of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that a certain target and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected;
The primary coil of pulse transformer only has one, one end conduction connection one resistance of primary coil and the parallel combination of electric capacity, the head end that this resistance and the other end of the parallel combination of electric capacity and coil capacitance-resistance described in the termination electrode A of multi-clearance ceramet gas discharge tube and the 1st combine conducts electricity and is connected; One end of primary coil other end conduction connection one switching device of pulse transformer, the other end of this switching device and the termination electrode A ' of multi-clearance ceramet gas discharge tube conduct electricity to be connected and to conduct electricity with the tail end that coil capacitance-resistance described in the 2nd combines and are connected.
Further, one or more independent gap is provided with between adjacent two targets of described multi-clearance ceramet gas discharge tube.
Further, termination electrode A ' is connected with zero line or protecting field by described hot release unit; When the temperature of the termination electrode A ' of multi-gap metal gas discharge tube reaches disengaging threshold values, described hot release unit departs from from termination electrode A ', thus open end electrode A ' be connected with the conduction of zero line or protecting field.
Further, the side of described hot release unit is provided with sensitive switch, and described sensitive switch is associated with remote signalling interface;
Described hot release unit starts sensitive switch while the termination electrode A ' of multi-gap metal gas discharge tube departs from, to remote signalling interface outputting alarm signal when sensitive switch starts.
Further, described switching device is gas discharge tube or semiconductor switch components and parts.
Working mechanism of the present invention is; because the starting resistor of switching device is low; when thunderbolt or switching overvoltage attack; switching device shorting advance; switching device starting impulse primary loop, puts on Multiple level discharge tube by the combination of pulse transformer secondary subcoil capacitance-resistance after boosting simultaneously, all gaps of Multiple level discharge tube is punctured simultaneously; to reduce deboost, level of protection improves.Because the crest voltage of power supply is lower than the voltage maintaining M-GDT arc discharge after pulse surge, M-GDT quits work and blow-out, returns to non-conductive state.
The invention has the beneficial effects as follows, improve level of protection.When thunderbolt or switching overvoltage attack, the primary coil of pulse transformer is due to the combination of serial connection capacitance-resistance and switching device, and switching device makes the primary return of pulse transformer take the lead in starting, and produces pulse current in primary coil.Each subcoil of pulse transformer secondary is responded to simultaneously and is produced induced current and boost, this voltage instantaneous puts on each target of multi-clearance ceramet gas discharge tube simultaneously, make each gap conducting simultaneously of each target, cause Multiple level at the discharge tube becoming the entirety only having termination electrode A and termination electrode A ' instantaneously.Because the present invention defines multi-stage protection and decoupling, thus achieve and progressively reduce deboost, improve level of protection.
The reliability that the present invention protects, stability and fail safe are relative to prior art General Promotion.
Accompanying drawing explanation
Fig. 1 is existing multi-clearance ceramet gas discharge tube over-voltage protection module (publication number 101753858B) circuit theory diagrams;
Fig. 2 is be the circuit theory diagrams of first embodiment of the invention;
Fig. 3 is be the circuit theory diagrams of second embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing introduction to the specific embodiment of the invention.
One of embodiment
As shown in Figure 2, preionization multi-clearance ceramet gas discharge tube overvoltage protection of the present invention, comprises multi-clearance ceramet gas discharge tube M-GDT and pulse transformer B.
This multi-clearance ceramet gas discharge tube M-GDT has termination electrode A and termination electrode A ', also has n target K1 ~ Kn, wherein n >=1; The termination electrode A of multi-clearance ceramet gas discharge tube M-GDT conducts electricity with the phase line L of power supply and is connected; The termination electrode A ' of multi-clearance ceramet gas discharge tube M-GDT conducts electricity with the zero line N of power supply or protecting field PE and is connected.Three independent gaps are provided with between adjacent two targets of described multi-clearance ceramet gas discharge tube M-GDT.
The secondary coil of pulse transformer B comprises n subcoil M1 ~ Mn, wherein n >=1; Also comprise the parallel combination of resistance R1 and electric capacity C1, and be called the parallel combination of resistance capacitance, the parallel combination of described resistance capacitance has n, wherein n >=1; The parallel combination of resistance capacitance described in each subcoil M1 ~ Mn and is in series and is called that coil capacitance-resistance combines J1 ~ Jn, and one end be connected of not conducting electricity with the parallel combination of described resistance capacitance of subcoil M1 ~ Mn is called the head end that described coil capacitance-resistance combines, one end be connected of not conducting electricity with subcoil M1 ~ Mn of the parallel combination of described resistance capacitance is called the tail end that described coil capacitance-resistance combines, described coil capacitance-resistance combination has n, wherein n >=1 equally; N described coil capacitance-resistance combination J1 ~ Jn is in series, and according to head end, and---order of tail end---head end---tail end conducts electricity connection successively; The head end that termination electrode A and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube M-GDT combine J1 is connected with conduction; The tail end that termination electrode A ' and the coil capacitance-resistance described in n-th of multi-clearance ceramet gas discharge tube M-GD combine Jn conducts electricity and is connected; Each target K1 ~ Kn of multi-clearance ceramet gas discharge tube M-GD combines J1 ~ Jn correspondingly tail end with the described winding capacitance-resistance of same sequence number conducts electricity and is connected.
Conduct electricity the parallel combination of connection one resistance R2 and electric capacity C2 for primary coil M one end (without phase sequence) of pulse transformer B, and the head end that this resistance R2 and the other end of the parallel combination of electric capacity C2 and coil capacitance-resistance described in the termination electrode A of multi-clearance ceramet gas discharge tube M-GD and the 1st combine J1 conducts electricity and is connected; The other end (without phase sequence) of the primary coil M of pulse transformer B conducts electricity one end of connection one switching device Q, and the tail end that the other end of this switching device Q and coil capacitance-resistance described in the termination electrode A ' and n-th of multi-clearance ceramet gas discharge tube M-GD combine Jn conducts electricity and is connected.
From circuit diagram, working mechanism of the present invention is understood that.The termination electrode A of described multi-gap metal gas discharge tube M-GD, termination electrode A ', and target K1 ~ Kn combines J1 ~ Jn respectively and conducts electricity and be connected with described coil capacitance-resistance, when thunderbolt or switching overvoltage attack, because the starting resistor of switching device Q is low, Q shorting advance, electric current via primary coil M to the parallel combination bulk charging of resistance R2 and electric capacity C2, primary coil M is boosted by pulse transformer, produce pulse high-voltage in pulse transformer secondary coil capacitance-resistance combination J1 ~ Jn simultaneously, the high voltage that secondary coil capacitance-resistance combination J1 ~ Jn produces, put on the termination electrode A of Multiple level discharge tube M-GDT simultaneously, target K1 ~ Kn and termination electrode A ', make all gaps of Multiple level discharge tube M-GDT puncture generation preionization simultaneously, the deboost of its M-GDT is reduced, when the high peak energy of thunderbolt and switching overvoltage comes then, gap rapid conducting on the basis of preionization of termination electrode A and the 1st target K1, due to pulse transformer secondary subcoil capacitance-resistance combination J1 ~ Jn totally one magnetic core, thunderbolt and switching overvoltage by start simultaneously A-K1 KI-K2, K2-K3 ..., Kn-A ' gap, whole M-GDT conducting.Because the crest voltage of power supply is lower than the voltage maintaining M-GDT arc discharge after pulse surge, M-GDT quits work and blow-out, returns to non-conductive state.
Time between overvoltage invasion A-A '; M-GDT A-K1 ..., before Kn-A ' gap also do not have conducting; overvoltage is first by switching device Q, resistance R2 electric capacity C2, pulse transformer B primary coil M conducting; thus improve the response speed of the present invention's protection; its deboost is equivalent to the puncture voltage of switching device Q simultaneously; thus residual voltage can be reduced further, in order to avoid residual voltage destroys follow-up power consumption equipment.
The termination electrode A ' of described multi-gap metal gas discharge tube M-GDT is provided with hot release unit ST, and termination electrode A ' is connected with zero line N or protecting field PE by described hot release unit ST; When the temperature of the termination electrode A ' of multi-gap metal gas discharge tube M-GDT reaches disengaging threshold values, described hot release unit ST departs from from termination electrode A ', thus open end electrode A ' be connected with the conduction of zero line N or protecting field PE.Meanwhile,
The side of described hot release unit is provided with sensitive switch, and described sensitive switch is associated with remote signalling interface;
Described hot release unit starts sensitive switch while the termination electrode A ' of multi-gap metal gas discharge tube departs from, respectively to stand by lamp, remote signalling interface outputting alarm signal when sensitive switch starts.The side of hot release unit ST is provided with sensitive switch SW, and hot release unit ST starts sensitive switch SW while termination electrode A ' departs from, and described sensitive switch SW is associated with remote signalling interface E, when sensitive switch SW starts to remote signalling interface E outputting alarm signal.
Described switching device Q is gas discharge tube or semiconductor switch components and parts.
In the present invention, discharge tube adopts multi-clearance ceramet gas discharge tube M-GDT, be equivalent to multiple discharge tube GDT series connection use, the gap A-K1 of M-GDT adjacent electrode, K1-K2 ..., Kn-A ' conducting successively, its deboost is equivalent to the interelectrode pulse breakdown voltage of A-K1, and thus residual voltage of the present invention is low.Meanwhile, after overvoltage, M-GDT returns to not on-state rapidly and there will not be afterflow phenomenon, thus improves the reliability of multi-gap metal gas discharge tube power supply over-voltage protection module, stability and fail safe.Meanwhile, the termination electrode A ' of M-GDT is provided with hot release unit SW, its objective is and improve fail safe of the present invention further, to avoid beyond thought adverse consequences, as fire etc.Sensitive switch SW, remote signalling interface E make staff can occur abnormal conditions by Timeliness coverage over-voltage protection module, and keep in repair it in time, in order to avoid follow-up power consumption equipment suffers damage.
Embodiment two
Preionization multi-clearance ceramet gas discharge tube overvoltage protection, comprises multi-clearance ceramet gas discharge tube M-GDT and transformer B;
This multi-clearance ceramet gas discharge tube M-GDT has termination electrode A and termination electrode A ', also has 6 target K1 ~ K6, and the termination electrode A of multi-clearance ceramet gas discharge tube M-GDT conducts electricity with the phase line L of power supply and is connected; The termination electrode A ' of multi-clearance ceramet gas discharge tube M-GDT conducts electricity with zero N line of power supply or protecting field PE and is connected.Three independent gaps are provided with between adjacent two targets of described multi-clearance ceramet gas discharge tube M-GDT.
The secondary coil of pulse transformer B comprises two subcoil M1 and M2; Also comprise the parallel combination of resistance R1 and electric capacity C1, and be called the parallel combination of resistance capacitance, the parallel combination of described resistance capacitance is two; The parallel combination of resistance capacitance described in each subcoil M1, M2 and is in series and is called that coil capacitance-resistance combines J1 and J2, and one end be connected of not conducting electricity with the parallel combination of described resistance capacitance of subcoil M1, M2 is called that described coil capacitance-resistance combines the head end of J1 and J2, one end be connected of not conducting electricity with subcoil M1, M2 of the parallel combination of described resistance capacitance is called tail end J1 and J2 that described coil capacitance-resistance combines, two described coil capacitance-resistances combination J1 and J2 are in series, and according to head end, and---order of tail end---head end---tail end conducts electricity connection successively; The head end that termination electrode A and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube M-GDT combine J1 conducts electricity and is connected; The tail end that termination electrode A ' and the coil capacitance-resistance described in the 2nd of multi-clearance ceramet gas discharge tube M-GDT combine J2 conducts electricity and is connected; The tail end that 3rd target K3 and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected.
Conduct electricity the parallel combination of connection one resistance R2 and electric capacity C2 for primary coil M one end (without phase sequence) of transformer, and the head end that this resistance R2 and the other end of the parallel combination of electric capacity C2 and winding capacitance-resistance described in the termination electrode A of multi-clearance ceramet gas discharge tube and the 1st combine J1 conducts electricity and is connected; The primary coil other end (without phase sequence) of transformer conducts electricity one end of connection one switching device Q, and the tail end that the other end of this switching device Q and winding capacitance-resistance described in the termination electrode A ' of multi-clearance ceramet gas discharge tube and the 2nd combine J2 conducts electricity to be connected to conduct electricity and connects.
The other side of the present embodiment is identical with one of embodiment, repeats no more.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. preionization multi-clearance ceramet gas discharge tube overvoltage protection, is characterized in that: comprise multi-clearance ceramet gas discharge tube and pulse transformer;
This multi-clearance ceramet gas discharge tube has termination electrode A and termination electrode A ', also has n target, wherein n >=1; The termination electrode A of multi-clearance ceramet gas discharge tube conducts electricity with the phase line of power supply and is connected; The termination electrode A ' of multi-clearance ceramet gas discharge tube conducts electricity with the zero line of power supply or protecting field and is connected;
The secondary coil of pulse transformer comprises n subcoil, wherein n >=1; Also comprise the parallel combination of resistance and electric capacity, and be called the parallel combination of resistance capacitance, the parallel combination of described resistance capacitance has n, wherein n >=1; The parallel combination of resistance capacitance described in each subcoil and is in series and is called that coil capacitance-resistance combines, and one end be connected of not conducting electricity with the parallel combination of described resistance capacitance of subcoil is called the head end that described coil capacitance-resistance combines, one end be connected of not conducting electricity with subcoil of the parallel combination of described resistance capacitance is called the tail end that described coil capacitance-resistance combines, described coil capacitance-resistance combination has n, wherein n >=1 equally; The described coil capacitance-resistance combination of n is in series, and according to head end, and---order of tail end---head end---tail end conducts electricity connection successively; The head end that termination electrode A and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that termination electrode A ' and the winding capacitance-resistance described in n-th of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that each target of multi-clearance ceramet gas discharge tube combines with the described coil capacitance-resistance of same sequence number correspondingly conducts electricity and is connected;
One end conduction connection one resistance of the primary coil of pulse transformer and the parallel combination of electric capacity, the head end that this resistance and the other end of the parallel combination of electric capacity and coil capacitance-resistance described in the termination electrode A of multi-clearance ceramet gas discharge tube and the 1st combine conducts electricity and is connected; One end of primary coil other end conduction connection one switching device of pulse transformer, the other end of this switching device and the termination electrode A ' of multi-clearance ceramet gas discharge tube conduct electricity to be connected and to conduct electricity with the tail end that coil capacitance-resistance described in n-th combines and are connected.
2. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 1, is characterized in that: be provided with one or more independent gap between adjacent two targets of described multi-clearance ceramet gas discharge tube.
3. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 1, it is characterized in that: the termination electrode A ' of described multi-gap metal gas discharge tube is provided with hot release unit, termination electrode A ' is connected with zero line or protecting field by described hot release unit; When the temperature of the termination electrode A ' of multi-gap metal gas discharge tube reaches disengaging threshold values, described hot release unit departs from from termination electrode A ', thus open end electrode A ' be connected with the conduction of zero line or protecting field.
4. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 3, is characterized in that: the side of described hot release unit is provided with sensitive switch, and described sensitive switch is associated with remote signalling interface;
Described hot release unit starts sensitive switch while the termination electrode A ' of described multi-gap metal gas discharge tube departs from, to remote signalling interface outputting alarm signal when sensitive switch starts.
5. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 1, is characterized in that: described switching device is gas discharge tube or semiconductor switch components and parts.
6. preionization multi-clearance ceramet gas discharge tube overvoltage protection, is characterized in that: comprise multi-clearance ceramet gas discharge tube and pulse transformer;
This multi-clearance ceramet gas discharge tube has termination electrode A and termination electrode A ', also has n target, wherein n >=1; The termination electrode A of multi-clearance ceramet gas discharge tube conducts electricity with the phase line of power supply and is connected; The termination electrode A ' of multi-clearance ceramet gas discharge tube conducts electricity with the zero line of power supply or protecting field and is connected;
The secondary coil of pulse transformer comprises 2 subcoils; Also comprise the parallel combination of resistance and electric capacity, and be called the parallel combination of resistance capacitance, the parallel combination of described resistance capacitance is 2; The parallel combination of resistance capacitance described in each subcoil and is in series and is called that coil capacitance-resistance combines, and one end be connected of not conducting electricity with the parallel combination of described resistance capacitance of subcoil is called the head end that described coil capacitance-resistance combines, one end be connected of not conducting electricity with subcoil of the parallel combination of described resistance capacitance is called the tail end that described coil capacitance-resistance combines, 2 described coil capacitance-resistances combinations are in series, and according to head end, and---order of tail end---head end---tail end conducts electricity connection successively; The head end that termination electrode A and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that termination electrode A ' and the coil capacitance-resistance described in the 2nd of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected; The tail end that a certain target and the coil capacitance-resistance described in the 1st of multi-clearance ceramet gas discharge tube combine conducts electricity and is connected;
The primary coil of pulse transformer only has one, one end conduction connection one resistance of primary coil and the parallel combination of electric capacity, the head end that this resistance and the other end of the parallel combination of electric capacity and coil capacitance-resistance described in the termination electrode A of multi-clearance ceramet gas discharge tube and the 1st combine conducts electricity and is connected; One end of primary coil other end conduction connection one switching device of pulse transformer, the other end of this switching device and the termination electrode A ' of multi-clearance ceramet gas discharge tube conduct electricity to be connected and to conduct electricity with the tail end that coil capacitance-resistance described in the 2nd combines and are connected.
7. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 6, is characterized in that: be provided with one or more independent gap between adjacent two targets of described multi-clearance ceramet gas discharge tube.
8. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 6, is characterized in that: termination electrode A ' is connected with zero line or protecting field by described hot release unit; When the temperature of the termination electrode A ' of multi-gap metal gas discharge tube reaches disengaging threshold values, described hot release unit departs from from termination electrode A ', thus open end electrode A ' be connected with the conduction of zero line or protecting field.
9. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 8, is characterized in that: the side of described hot release unit is provided with sensitive switch, and described sensitive switch is associated with remote signalling interface;
Described hot release unit starts sensitive switch while the termination electrode A ' of multi-gap metal gas discharge tube departs from, to remote signalling interface outputting alarm signal when sensitive switch starts.
10. preionization multi-clearance ceramet gas discharge tube overvoltage protection according to claim 6, is characterized in that: described switching device is gas discharge tube or semiconductor switch components and parts.
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| CN112117070A (en) * | 2019-06-20 | 2020-12-22 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
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| CN201478825U (en) * | 2009-06-10 | 2010-05-19 | 东莞市新铂铼电子有限公司 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
| WO2014032631A2 (en) * | 2012-08-28 | 2014-03-06 | Saltek S.R.O. | Design of the triggering circuit of the overvoltage protection |
| CN204190376U (en) * | 2014-10-09 | 2015-03-04 | 东莞市新铂铼电子有限公司 | Preionization multi-clearance ceramet gas discharge tube overvoltage protection |
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| CN1225522A (en) * | 1998-02-02 | 1999-08-11 | 凤凰接触公司 | Overvoltage protection system and overvoltage protection element for overvoltage protection system |
| CN1601843A (en) * | 2004-10-26 | 2005-03-30 | 曾献昌 | A, C, mains overvoltage protector having metalic ceramic gas discharge tube |
| CN201478825U (en) * | 2009-06-10 | 2010-05-19 | 东莞市新铂铼电子有限公司 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
| WO2014032631A2 (en) * | 2012-08-28 | 2014-03-06 | Saltek S.R.O. | Design of the triggering circuit of the overvoltage protection |
| CN204190376U (en) * | 2014-10-09 | 2015-03-04 | 东莞市新铂铼电子有限公司 | Preionization multi-clearance ceramet gas discharge tube overvoltage protection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117070A (en) * | 2019-06-20 | 2020-12-22 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
| CN112117070B (en) * | 2019-06-20 | 2022-03-08 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
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| CN104283203B (en) | 2017-08-25 |
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