CN101639507B - Controllable metal oxide arrester action characteristic testing device and method therefor - Google Patents
Controllable metal oxide arrester action characteristic testing device and method therefor Download PDFInfo
- Publication number
- CN101639507B CN101639507B CN2009100887828A CN200910088782A CN101639507B CN 101639507 B CN101639507 B CN 101639507B CN 2009100887828 A CN2009100887828 A CN 2009100887828A CN 200910088782 A CN200910088782 A CN 200910088782A CN 101639507 B CN101639507 B CN 101639507B
- Authority
- CN
- China
- Prior art keywords
- voltage
- metal oxide
- oxide arrester
- controllable metal
- voltage output
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 116
- 230000009471 action Effects 0.000 title claims abstract description 61
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 48
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title abstract description 15
- 238000010998 test method Methods 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000006187 pill Substances 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 101000887424 Mus musculus G-protein coupled receptor 143 Proteins 0.000 description 8
- 101100130927 Caenorhabditis elegans moa-2 gene Proteins 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000700 radioactive tracer Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 206010042209 Stress Diseases 0.000 description 1
- 241001422033 Thestylus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a controllable metal oxide arrester action characteristic testing device and a method therefor. The method comprises: the sphere gap spacing in an impulse voltage generator is regulated, impulse voltage with the peak value higher than the action threshold value of a controllable metal oxide arrester sample is applied on the controllable metal oxide arrester sample for a plurality of times, and the voltage value of the controllable metal oxide arrester sample at the action moment can be obtained by recording the voltage value of the sample at the action moment. The action characteristic testing method of the controllable arrester has good system equivalence under the conditions of power frequency, operation and lightning impulse voltage, so as to comprehensively test the action characteristics of the controllable arrester in an actual system under various voltages.
Description
Technical field
The present invention relates to the controllable metal oxide arrester technology, relate in particular to a kind of controllable metal oxide arrester acting characteristic test unit and method.
Background technology
The degree of depth is reduced the demand and the deficiency of the conventional restriction of switching overvoltage of switching overvoltage level according to the ultra-high voltage AC transmission system, proposed the notion of controllable metal oxide arrester in existence aspect economy and the operational reliability.Hereinafter, abbreviate controllable metal oxide arrester as controlled lightning arrester.The structure of controlled lightning arrester is as shown in Figure 1, and MOA1, MOA2 are respectively controlled member and retaining element; K is a switch, can adopt thyristor or gap.The principle of work of controlled lightning arrester is: control the lightning arrester resistor disc flexibly through K and insert quantity to change the lightning arrester volt-ampere characteristic.When system normally moves; K breaks off; The common pressure limiting of MOA1 and MOA2, (for example, conventional lightning arrester rated voltage is 828kV through improving its rated voltage; Controlled lightning arrester rated voltage is chosen as 890kV) to reduce lightning arrester operation chargeability (for example, controlled lightning arrester operation chargeability is reduced to 71% from 77% of conventional lightning arrester).Under the transient state situation, the K conducting, MOA1 is by short circuit, and the MOA2 residual voltage is low, reduces the system operation superpotential with the degree of depth.
But the description to controlled lightning arrester and thyristor switch K principle of work under WV, power-frequency overvoltage, switching overvoltage and lightning surge thereof in the prior art only limits to theoretical analysis, its correctness experimental examination of still needing.At present; The standard that power-frequency voltage resistance test, operating impulse voltage test and lightning impulse voltage test to conventional lightning arrester are only arranged both at home and abroad; And above-mentioned standard all is for checking the insulating property of conventional lightning arrester, can not directly be used for checking the acting characteristic under the various voltage stresss of controlled lightning arrester.At present, for this novel device of controlled lightning arrester, not having ready-made test method and test standard can follow, and therefore, needs to formulate new test method and test standard to the characteristics of controlled lightning arrester.
Summary of the invention
In view of this, the present invention's technical matters that will solve provides a kind of controlled lightning arrester acting characteristic test unit.
The present invention provides a kind of controlled lightning arrester acting characteristic test unit, and comprising: impulse voltage generator, impulse voltage generator have high-voltage output end and low-voltage output, and controlled lightning arrester test product is connected between this high-voltage output end and the low-voltage output; Voltage divider, an end links to each other with the high-voltage output end of impulse voltage generator, an end ground connection; The waveform recording device is connected the output terminal of voltage divider.Wherein, impulse voltage generator comprises: the zero level branch road comprises: wave front resistance and wave rear resistance, this wave front resistance and wave rear resistance are connected between the high-voltage output end and low-voltage output of impulse voltage generator; The batching sphere crack, an end in batching sphere crack is connected to the tie point of wave front resistance and wave rear resistance; The one-level branch road has one-level high-voltage output end and one-level low-voltage output, comprising: the one-level main capacitor is connected between said one-level high-voltage output end and the one-level low-voltage output; The ignition pill crack is connected between one-level high-voltage output end and the ground; Charging resistor is connected between one-level low-voltage output and the ground; Protective resistance, high voltage silicon rectifier stack and testing transformer, the secondary coil of said protective resistance, high voltage silicon rectifier stack and testing transformer are connected in series between one-level high-voltage output end and the ground successively; Pressure regulator, the parallel connection of primary windings of pressure regulator and testing transformer is connected.The other end in batching sphere crack is connected said one-level low-voltage output.
An embodiment according to controlled lightning arrester acting characteristic test unit of the present invention also comprises at least one secondary branch road.This secondary branch road has secondary high output terminal and secondary low-voltage output terminal, comprising: secondary main capacitor is connected between secondary high output terminal and the secondary low-voltage output terminal; Secondary ball crack and damping resistance are connected in series between secondary high output terminal and the upper level low-voltage output; Two charging resistors, be connected to secondary and the upper level high-voltage output end between and between secondary and the upper level low-voltage output.
According to an embodiment of controlled lightning arrester acting characteristic test unit of the present invention, comprise that also the ball stand-off distance from control device, is used for adjusting the distance in branch road balls at different levels crack.
Another technical matters that the present invention will solve provides a kind of controlled lightning arrester acting characteristic test method.
The present invention provides a kind of controlled lightning arrester acting characteristic test method; Comprise: set that the ball stand-off distance leaves in the said impulse voltage generator; Controlled lightning arrester test product is applied the surge voltage that peak value is higher than said controlled lightning arrester test product action threshold value, write down said controlled lightning arrester test product action magnitude of voltage constantly; Increase progressively that the ball stand-off distance leaves in the said impulse voltage generator, controlled lightning arrester test product is applied the surge voltage that peak value is higher than said controlled lightning arrester test product action threshold value, write down said controlled lightning arrester test product action magnitude of voltage constantly; With the mean value of the above-mentioned said controlled lightning arrester test product action magnitude of voltage constantly that repeatedly measure to obtain as said controlled lightning arrester test product action magnitude of voltage constantly.
Further; This method also comprises: set at first that the ball stand-off distance leaves in the impulse voltage generator; Controlled lightning arrester test product is applied the surge voltage that peak value is lower than said controlled lightning arrester test product action threshold value slightly; If said controlled lightning arrester test product action magnitude of voltage is constantly write down in said controllable metal oxide arrester test product action.
Further, this method also comprises: the said controlled lightning arrester test product action magnitude of voltage constantly to record carries out temperature and/or humidity correction.
Controlled lightning arrester acting characteristic test unit of the present invention and method have realized the test of the acting characteristic of controlled lightning arrester under power frequency, operation and lightning impulse voltage; Have the good system equivalence, can check controlled lightning arrester acting characteristic under the various voltages in real system.
Description of drawings
Fig. 1 illustrates the structural drawing of controlled lightning arrester;
Fig. 2 illustrates the VA characteristic curve of drawing according to controlled lightning arrester principle of work;
Fig. 3 illustrates controlled lightning arrester acting characteristic test schematic under the power-frequency voltage;
Fig. 4 illustrates according to controlled lightning arrester acting characteristic test schematic under the surge voltage of the present invention;
Fig. 5 illustrates the process flow diagram according to an embodiment of controllable metal oxide arrester acting characteristic test method of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is more comprehensively described, exemplary embodiment of the present invention wherein is described.
Fig. 2 illustrates the VA characteristic curve of drawing according to controlled lightning arrester principle of work.In Fig. 2, curve 2 is the VA characteristic curve of controlled lightning arrester, and as a comparison, curve 1 is the VA characteristic curve of conventional lightning arrester; Wherein, conventional lightning arrester rated voltage is 828kV, and controlled lightning arrester rated voltage is chosen as 890kV.
Under WV or the power-frequency overvoltage: K breaks off, and voltage is born in MOA1 and MOA2 series connection jointly, and controlled lightning arrester works in the regional A among Fig. 2.Controlled lightning arrester operation chargeability is reduced to 71% from 77% of conventional lightning arrester, to improve lightning arrester long-time running reliability.
Under the switching overvoltage: in system for ultra-high voltage transmission, switching overvoltage wave head time T
fLonger, be generally 600～4500 μ s, the T more than 90%
f＞1000 μ s.The service time T of thyristor switch K
GtBe generally 1 to a few μ s, much smaller than the wave head time of switching overvoltage, the response time of K can be satisfied the superpotential requirement of restriction operation fully.When switching overvoltage value that controlled lightning arrester bore surpasses its activation threshold value, the K conducting, MOA1 is by short circuit, and controlled lightning arrester works in the area B of curve 2 among Fig. 2, and the MOA2 residual voltage is lower, can switching overvoltage be restricted to reduced levels.
Thunder and lightning is invaded under the ripple superpotential: statistics shows, about 85% lightning current wave head length degree in 1～5 μ s, average out to 2.6 μ s.The thunder and lightning that this lightning current produced is invaded the superpotential wave head time T of ripple
hGenerally in 1～4 μ s.When the superpotential amplitude of thunder and lightning intrusion ripple rose to the action threshold value of controlled lightning arrester, thyristor switch just began response, passes through T then
GtService time after, really get into conducting state.If it is T that thunder and lightning intrusion ripple superpotential amplitude rises to the controlled lightning arrester action required time of threshold value, the service time T of thyristor switch
Gt, the actual entering required time of conducting state of thyristor switch is (T+T
Gt), both sums are often invaded the superpotential wave head time T of ripple greater than thunder and lightning
h, the response speed of thyristor switch can't satisfy the restriction thunder and lightning and invade the superpotential requirement of ripple.At this moment, MOA1 and the MOA2 common pressure limiting of connecting, controlled lightning arrester works in the zone C of curve 2 among Fig. 2.Because the more conventional lightning arrester of lightning arrester rated voltage is high; Residual voltage of arrester increases; The thunder and lightning of same amplitude is invaded under the ripple superpotential; Lightning surge on the equipment can raise, and can make it less than the lightning impulse tolerance level through the installation quantity of optimization lightning arrester and the lightning surge on the position limit electrical equipment.
At first introduce the test of controlled lightning arrester acting characteristic under power-frequency voltage below.
Fig. 3 illustrates controlled lightning arrester acting characteristic test schematic under the power-frequency voltage.As shown in Figure 3, this hookup comprises industrial frequency experiment voltage source 10, switch 11, testing transformer 12, test product 13, voltage divider 14 and wave tracer 15.Between voltage source 10 and switch 11, also be in series with anti-(abbreviation internal resistance) Zs of power supply equivalent internal resistance.Annexation between each assembly is as shown in Figure 3; Voltage source 10, resistance Zs and switch 11 are connected on the two ends of the primary coil of transformer 12; Test product 13 is connected in parallel on the two ends of the secondary coil of transformer 12; One end of voltage divider 14 links to each other with the high-voltage output end of transformer 12, other end ground connection, and wave tracer 15 is connected the output terminal of voltage divider 14.
Controlled lightning arrester will bear the effect of power-frequency voltage (WV and power-frequency overvoltage) in operational process; The action accuracy of controlled lightning arrester under power-frequency voltage is directly connected to the energy absorption and tolerance performance of retaining element MOA2, therefore need be to the action accuracy research experiment of controlled lightning arrester under the power-frequency voltage.
This test is mainly used in the acting characteristic of the controlled lightning arrester of test under the power-frequency voltage that surpasses its action threshold value U0.High voltage industrial frequency experiment voltage source and adjusting and test branch road are adopted in test, and hookup is as shown in Figure 3.The trial voltage value that requires the industrial frequency experiment voltage source is much larger than U0, and frequency and is similar to sine wave between 48Hz and 62Hz; Measuring equipments such as voltage divider should satisfy the requirement of GB/T 16927.2.
At first, the controlled part of test product is installed in low-pressure side or high-pressure side, and test product is placed on the metal support with the real system equal height, carry out wiring by hookup Fig. 3 according to the mounting means in the real system of controlled lightning arrester.Slowly pressurize for test product,, rapidly voltage is reduced to 0 then until controlled lightning arrester action, the voltage U when measuring controlled lightning arrester action, and write down corresponding waveform; Repeat above-mentioned steps, the measurement result of each U is all carried out temperature and humidity proofread and correct, the mean value of asking many measurement results of U at last is as controlled lightning arrester and the operation voltage of thyristor switch under power-frequency voltage thereof.
Fig. 4 illustrates according to controlled lightning arrester acting characteristic test schematic under the surge voltage of the present invention.As shown in Figure 4, controlled lightning arrester acting characteristic test unit comprises impulse voltage generator 21, voltage divider 24 and waveform recording device 25.Wherein, impulse voltage generator 21 has high-voltage output end 1 and low-voltage output 2, and controlled lightning arrester test product 23 is connected in parallel between high-voltage output end 1 and the low-voltage output 2; Voltage divider 24 1 ends link to each other other end ground connection with the high-voltage output end 1 of impulse voltage generator 21; Waveform recording device 25 is connected the output terminal of voltage divider 24.
As shown in Figure 4, testing transformer T and high voltage silicon rectifier stack D constitute rectifier power source, charge to main capacitor C1～Cn through protective resistance r and charging resistor R; Be charged to U; Appear at the last potential difference (PD) of ball crack g1～gn and be U yet, be a bit larger tham U if be transferred to the sphere gap distance in advance, sphere gap can not discharge.When needs produce surge voltage, can send to a pulse voltage to the stylus of ignition pill crack g1, produce a sparklet between stylus and the covering, cause the igniting ball-gap discharge, so the top crown of capacitor C1 through g1 ground connection, the current potential of point (2-1) is become-U by earth potential.There is charging resistor R to separate between capacitor C1 and the next stage capacitor C2; R is bigger, discharges moment the impossible flip-flop of point (1-2) and point (2-2) current potential at g1; Point (1-2) current potential still is+U; Potential difference (PD) on the g2 of ball crack rises to 2U suddenly, and g2 discharges at once, so point (1-2) current potential becomes suddenly-2U.In like manner, g3, g4......gn be and then discharge also, and capacitor C1～Cn just has been together in series.At last, batching sphere crack g0 also discharges, and at this moment, output voltage is the last voltage summation of C1～Cn, for-nU.Above-mentioned a series of process can be summarized as " capacitor charged in parallel, then discharged in series ", becomes series connection by parallel connection and leans on one group of ball crack to reach.R plays the connection effect of circuit when charging, when discharge, play buffer action again.Rd prevents the inner vibration usefulness that takes place in loop.Protective resistance r generally than the big order of magnitude of R, not only protects silicon stack, also can make the charging voltage of capacitors at different levels more even.The speed of the surge voltage waveform rising part that this impulse voltage generator produced is relevant with Rf, and Rf is called wave front resistance; The speed of surge voltage waveform sloping portion is relevant with Rt, and Rt is called wave rear resistance.Rf is little, and it is fast to rise; Rt is big, and it is slow to descend.
According to an embodiment of controllable metal oxide arrester acting characteristic test unit of the present invention, comprise that also the ball stand-off distance from control device, is used for adjusting the distance in branch road balls at different levels crack.
Those skilled in the art will appreciate that the needs according to different tests, above-mentioned controlled lightning arrester acting characteristic test schematic can comprise one or more secondary branch roads 212, and each secondary branch road comprises identical assembly.When comprising a plurality of secondary branch road 212; The annexation of secondary branch road and one-level branch road is similar among annexation between each secondary branch road and Fig. 4; First secondary branch road is as shown in Figure 4 to link to each other with the one-level branch road, and last secondary branch road is as shown in Figure 4 to link to each other with the zero level branch road.Can find out that from top description secondary branch road has the effect that voltage difference is added up.Equally, according to the needs of different tests, above-mentioned controlled lightning arrester acting characteristic test schematic also can not comprise secondary branch road 212, and at this moment, the other end in the zero level ball crack in first output terminal of one-level branch road and the zero level branch road directly is connected.
Fig. 5 illustrates the process flow diagram according to an embodiment of controllable metal oxide arrester acting characteristic test method of the present invention.
As shown in Figure 5; In step 502; Set that the ball stand-off distance leaves in the said impulse voltage generator; The controllable metal oxide arrester test product is applied the surge voltage that peak value is higher than said controllable metal oxide arrester test product action threshold value, write down said controllable metal oxide arrester test product action magnitude of voltage constantly;
In step 504; Increase progressively that the ball stand-off distance leaves in the said impulse voltage generator; The controllable metal oxide arrester test product is applied the surge voltage that peak value is higher than said controllable metal oxide arrester test product action threshold value, write down said controllable metal oxide arrester test product action magnitude of voltage constantly;
In step 506, with the mean value of the above-mentioned said controllable metal oxide arrester test product action magnitude of voltage constantly that repeatedly measure to obtain as said controllable metal oxide arrester test product action magnitude of voltage constantly.
An embodiment according to acting characteristic test method of the present invention; Before step 502; Can set at first that the ball stand-off distance leaves in the impulse voltage generator; The controllable metal oxide arrester test product is applied the surge voltage that peak value is lower than said controllable metal oxide arrester test product action threshold value slightly, if said controllable metal oxide arrester test product action magnitude of voltage is constantly write down in the action of said controllable metal oxide arrester test product; Wherein above-mentioned being lower than slightly for example is than action threshold value low 1%～10%.
Below in conjunction with circuit among Fig. 4 and acting characteristic test method of the present invention, specifically describe test for operating impulse voltage and lightning impulse voltage.
At first introduce the test method of controlled lightning arrester acting characteristic under 250/2500 μ s reference waveform operating impulse voltage.
A fundamental purpose of controlled lightning arrester is the restriction operation surge voltage; So the action accuracy of thyristor switch under operating impulse voltage is directly connected to the restriction effect of controlled lightning arrester to operating impulse voltage, therefore need study the action accuracy of thyristor switch under the operating impulse voltage.
This test is mainly used in the controlled lightning arrester of test and places highly, reaches the influence of operating impulse voltage wave head time to controlled lightning arrester acting characteristic at the operating impulse voltage that surpasses its action threshold value acting characteristic and installation site, the test product of controlled part (MOA1 and K etc.) down.High voltage operation impulse voltage generator and adjusting and test loop are adopted in test, and hookup is as shown in Figure 4.The trial voltage peak value that requires the operating impulse voltage source is much larger than U0; Measuring equipments such as voltage divider should satisfy the requirement of GB/T 16927.2.
The test procedure of the inventive method comprises:
(11) according to the mounting means in the real system of controlled lightning arrester the controlled part of test product is installed in low-pressure side or high-pressure side, and test product is placed on the metal support with the real system equal height, carry out wiring by hookup Fig. 4.
(12) the ball stand-off distance of adjustment operation impulse voltage generator leaves; Apply the operating impulse voltage of peak value to test product, observe the waveform of U, see that whether controlled lightning arrester moves a little less than controlled lightning arrester action threshold value; Like action, the waveform of record U and controlled lightning arrester action magnitude of voltage constantly.
(13) the ball stand-off distance that suitably increases operation impulse voltage generator leaves; Apply the operating impulse voltage that peak value is higher than controlled lightning arrester action threshold value to test product; Observe the waveform of U and the action situation of controlled lightning arrester, the waveform of record U and controlled lightning arrester and thyristor switch action magnitude of voltage constantly thereof.
Repeating step (13) repeatedly all suitably increases the ball stand-off distance at every turn and leaves, trip temperature and the humidity correction of going forward side by side of the measurement result of record U, and the mean value of asking many measurement results of U at last is as controlled lightning arrester and the operation voltage of thyristor switch under operating impulse voltage thereof.
Secondly, introduce the test method of controlled lightning arrester acting characteristic under 1.2/50 μ s reference waveform lightning impulse voltage.
In theory; Because the wave head time of lightning impulse voltage is generally less than opening time delay of thyristor switch; The wave head that the thyristor switch of controlled lightning arrester possibly have little time under the lightning impulse superpotential is open-minded in the time; Generally can be open-minded in its wave rear, so controlled lightning arrester should limit the lightning impulse superpotential of shortwave head.Be the correctness that proof theory is analyzed, the present invention studies the acting characteristic of controlled lightning arrester under the lightning impulse superpotential.
This test be mainly used in the controlled lightning arrester of test in the installation site of the lightning impulse voltage that surpasses its action threshold value acting characteristic and controlled part (MOA1 and K etc.) down, the test product placement is highly to the influence of controlled lightning arrester acting characteristic.High voltage lightning impulse voltage generator and adjusting and test loop are adopted in test, and hookup is as shown in Figure 4.The trial voltage peak value that requires the lightning impulse voltage source is much larger than U0; Measuring equipments such as voltage divider should satisfy the requirement of GB/T 16927.2.
The test procedure of the inventive method comprises:
(21) according to the mounting means in the real system of controlled lightning arrester the controlled part of test product is installed in low-pressure side or high-pressure side, and test product is placed on the metal support of the height identical with real system, carry out wiring by hookup Fig. 4.
(22) the ball stand-off distance of adjustment lightning impulse voltage generator leaves, and applies the lightning impulse voltage of peak value a little less than controlled lightning arrester action threshold value to test product, observes the waveform of U, the waveform of record U and controlled lightning arrester action magnitude of voltage constantly.
(23) the ball stand-off distance that suitably increases operation impulse voltage generator leaves; Apply the operating impulse voltage that peak value is higher than controlled lightning arrester action threshold value to test product; Observe the waveform of U and the action situation of controlled lightning arrester, the waveform of record U and controlled lightning arrester action magnitude of voltage constantly.
Repeating step (23) repeatedly all suitably increases the ball stand-off distance at every turn and leaves, and go forward side by side trip temperature and humidity of the measurement result of record U is proofreaied and correct, and sums up the Changing Pattern of the magnitude of voltage in the controlled lightning arrester action moment with the lightning impulse voltage peak value at last.
Controlled lightning arrester acting characteristic test unit of the present invention and method can realize it being the experimental study of the acting characteristic of controlled lightning arrester under power frequency, operation and lightning impulse voltage; The correctness that check is described controlled lightning arrester principle of work under the different electric compressive stress is for the formulation of controlled lightning arrester control strategy provides test basis.Controlled lightning arrester of the present invention acting characteristic Study on testing method under power frequency, operation and lightning voltage has broken through the restriction of conventional lightning arrester test standard, for performance how to check controlled this novel device of lightning arrester with how to formulate new test method and test standard has been carried out useful exploration.Controlled lightning arrester of the present invention acting characteristic test method under power frequency, operation and lightning voltage has the good system equivalence, can completely examine controlled lightning arrester acting characteristic under the various voltages in real system.
Description of the invention provides for example with for the purpose of describing, and is not the disclosed form that exhaustively perhaps limit the invention to.A lot of modifications and variation are obvious for those of ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (7)
1. a controllable metal oxide arrester acting characteristic test unit is characterized in that, comprising:
Impulse voltage generator, said impulse voltage generator has high-voltage output end and low-voltage output, and said controllable metal oxide arrester test product is connected between said high-voltage output end and the low-voltage output;
Voltage divider, said voltage divider one end links to each other with the high-voltage output end of said impulse voltage generator, an end ground connection;
The waveform recording device is connected the output terminal of said voltage divider;
Wherein, said impulse voltage generator comprises:
The zero level branch road comprises: wave front resistance and wave rear resistance, and said wave front resistance and wave rear resistance are connected between said high-voltage output end and the low-voltage output; The batching sphere crack, an end in said batching sphere crack is connected to the tie point of said wave front resistance and wave rear resistance;
The one-level branch road has one-level high-voltage output end and one-level low-voltage output, comprising: one-level main capacitor, said one-level main capacitor are connected between said one-level high-voltage output end and the one-level low-voltage output; Ignition pill crack, said ignition pill crack are connected between said one-level high-voltage output end and the ground; Charging resistor, said charging resistor are connected between said one-level low-voltage output and the ground; Protective resistance, high voltage silicon rectifier stack and testing transformer, the secondary coil of said protective resistance, high voltage silicon rectifier stack and testing transformer are connected in series between one-level high-voltage output end and the ground successively; Pressure regulator, the parallel connection of primary windings of said pressure regulator and said testing transformer is connected;
The other end in said batching sphere crack is connected said one-level low-voltage output.
2. controllable metal oxide arrester acting characteristic test unit according to claim 1 is characterized in that, also comprises at least one secondary branch road;
Said secondary branch road has secondary high output terminal and secondary low-voltage output terminal, comprising: secondary main capacitor is connected between secondary high output terminal and the secondary low-voltage output terminal; Secondary ball crack and damping resistance are connected in series between secondary high output terminal and the upper level low-voltage output; Two charging resistors, be connected to secondary and the upper level high-voltage output end between and between secondary and the upper level low-voltage output.
3. controllable metal oxide arrester acting characteristic test unit according to claim 1 and 2 is characterized in that, comprises that also the ball stand-off distance from control device, is used for adjusting the distance in branch road balls at different levels crack.
4. controllable metal oxide arrester acting characteristic test unit according to claim 1 and 2 is characterized in that, said wave front resistance is used for the speed of regulation voltage waveform rising part; Said wave rear resistance is used for the speed of regulation voltage waveform sloping portion.
5. a controllable metal oxide arrester acting characteristic test method of utilizing claim 1 or 2 described controllable metal oxide arrester acting characteristic devices to carry out is characterized in that, comprising:
Set that the ball stand-off distance leaves in the said impulse voltage generator; The controllable metal oxide arrester test product is applied the surge voltage that peak value is higher than said controllable metal oxide arrester test product action threshold value, write down said controllable metal oxide arrester test product action magnitude of voltage constantly;
Increase progressively that the ball stand-off distance leaves in the said impulse voltage generator; The controllable metal oxide arrester test product is applied the surge voltage that peak value is higher than said controllable metal oxide arrester test product action threshold value, write down said controllable metal oxide arrester test product action magnitude of voltage constantly;
With the mean value of the above-mentioned said controllable metal oxide arrester test product action magnitude of voltage constantly that repeatedly measure to obtain as said controllable metal oxide arrester test product action magnitude of voltage constantly.
6. controllable metal oxide arrester acting characteristic test method according to claim 5 is characterized in that, also comprises:
Set at first that the ball stand-off distance leaves in the impulse voltage generator; The controllable metal oxide arrester test product is applied the surge voltage that peak value is lower than said controllable metal oxide arrester test product action threshold value slightly; If said controllable metal oxide arrester test product action magnitude of voltage is constantly write down in said controllable metal oxide arrester test product action.
7. according to claim 5 or 6 described controllable metal oxide arrester acting characteristic test methods, it is characterized in that, also comprise:
Said controllable metal oxide arrester test product action magnitude of voltage constantly to record carries out temperature and/or humidity correction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100887828A CN101639507B (en) | 2009-07-16 | 2009-07-16 | Controllable metal oxide arrester action characteristic testing device and method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100887828A CN101639507B (en) | 2009-07-16 | 2009-07-16 | Controllable metal oxide arrester action characteristic testing device and method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101639507A CN101639507A (en) | 2010-02-03 |
| CN101639507B true CN101639507B (en) | 2012-06-13 |
Family
ID=41614593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100887828A Active CN101639507B (en) | 2009-07-16 | 2009-07-16 | Controllable metal oxide arrester action characteristic testing device and method therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101639507B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914708B (en) * | 2012-09-27 | 2015-09-23 | 中国电力科学研究院 | Metal oxide test product is response characteristics testing device under steep pulse |
| CN102890218B (en) * | 2012-10-24 | 2015-04-15 | 上海市电力公司 | Lightning impulse testing circuit for metal oxide arrester |
| CN103389425B (en) * | 2013-07-24 | 2016-06-08 | 西安交通大学 | Test system for shunting characteristics of multi-column lightning arrester |
| CN103475240A (en) * | 2013-09-05 | 2013-12-25 | 国家电网公司 | Gapless lightning impulse voltage generator |
| CN103558484B (en) * | 2013-11-16 | 2015-12-02 | 沈阳工业大学 | A kind of substation cable is by thunderbolt interference detecting apparatus and method |
| CN104237751B (en) * | 2014-09-23 | 2015-06-24 | 广东电网有限责任公司佛山供电局 | Device for testing power frequency follow current intercepting capability of lightning protection device |
| CN104502819B (en) * | 2014-12-25 | 2017-04-19 | 中国西电电气股份有限公司 | Arrester impact characteristics testing device and method |
| DE102015200902A1 (en) * | 2015-01-21 | 2016-07-21 | Siemens Aktiengesellschaft | Circuit arrangement for high-voltage tests and high-voltage test system |
| CN106771904B (en) * | 2016-11-30 | 2021-06-11 | 中国电力科学研究院 | System and method for performing impact test on controllable lightning arrester in extra-high voltage environment based on time sequence |
| CN107037295A (en) * | 2017-05-25 | 2017-08-11 | 中国电力科学研究院 | A kind of 1000kV extra-high-voltage alternating currents switching mode controllable arrester voltage's distribiuting test method |
| CN107505553A (en) * | 2017-08-29 | 2017-12-22 | 国网湖南省电力公司 | A kind of power frequency continued flow experimental rig and its application method |
| CN108562838A (en) * | 2018-01-16 | 2018-09-21 | 西安交通大学 | A kind of portable compact surge voltage generating means |
| CN109873572A (en) * | 2019-03-27 | 2019-06-11 | 哈尔滨理工大学 | An impulse voltage generating device for testing the dielectric strength of thin-film insulating materials |
| CN111830299B (en) * | 2019-04-16 | 2024-11-29 | 段小嬿 | Novel coupling test power frequency transformer allies oneself with level protection device |
| CN111049115A (en) * | 2019-12-25 | 2020-04-21 | 中国电力科学研究院有限公司 | A method for reducing the failure rate of large-capacity multi-column parallel arresters |
| CN111812458B (en) * | 2020-05-21 | 2021-11-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Test method for transient overvoltage limit withstand characteristics of DC transfer switch arresters |
| CN111722065B (en) * | 2020-05-21 | 2021-08-31 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A test method for ultimate energy tolerance of DC transfer switch arrester resistors |
| CN111999578A (en) * | 2020-08-10 | 2020-11-27 | 许继集团有限公司 | Controllable lightning arrester simulation test method and device |
| CN114665454B (en) * | 2020-12-23 | 2025-02-28 | 全球能源互联网研究院有限公司 | A DC lightning arrester and a lightning arrester voltage equalization method |
| CN114629098B (en) * | 2022-02-23 | 2022-11-11 | 中国科学院电工研究所 | Solid state switch based on segmented gapless arrester and its utilization improvement method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000185238A (en) * | 1998-12-22 | 2000-07-04 | Kobe Steel Ltd | Impulse voltage generator, crushing and separating apparatus, and aerobic treatment apparatus for organic waste liquid |
| CN101251570A (en) * | 2008-03-21 | 2008-08-27 | 国网武汉高压研究院 | Long wave front operation impulse voltage generator |
| CN201260135Y (en) * | 2008-09-03 | 2009-06-17 | 郑晓东 | Cascade-type high voltage impulse current generator |
-
2009
- 2009-07-16 CN CN2009100887828A patent/CN101639507B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000185238A (en) * | 1998-12-22 | 2000-07-04 | Kobe Steel Ltd | Impulse voltage generator, crushing and separating apparatus, and aerobic treatment apparatus for organic waste liquid |
| CN101251570A (en) * | 2008-03-21 | 2008-08-27 | 国网武汉高压研究院 | Long wave front operation impulse voltage generator |
| CN201260135Y (en) * | 2008-09-03 | 2009-06-17 | 郑晓东 | Cascade-type high voltage impulse current generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101639507A (en) | 2010-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101639507B (en) | Controllable metal oxide arrester action characteristic testing device and method therefor | |
| CN104155626B (en) | The system that ground potential climbing capacity resisted by a kind of detection voltage transformer | |
| CN202676815U (en) | Follow current interrupting test circuit for externally gapped line arrester | |
| CN108667001A (en) | A 110kV thyristor valve-type controllable arrester device and verification method | |
| Metwally | D-dot probe for fast-front high-voltage measurement | |
| CN103389425A (en) | Test system for shunting characteristics of multi-column lightning arrester | |
| Wen et al. | A new method to evaluate the effectiveness of impulse voltage for detecting insulation defects in GIS equipment | |
| CN204028345U (en) | A kind of system that detects voltage transformer (VT) and resist earth potential climbing capacity | |
| Mitra et al. | Resonant behavior of EHV transformer windings under system originated oscillatory transient over voltages | |
| KR20110125666A (en) | Cutoff Spark Discharge Path | |
| Amiri | Analysis and comparison of actual behavior of oil-type and dry-type transformers during lightning | |
| Goedde et al. | Full scale lightning surge tests of distribution transformers and secondary systems | |
| Siegert et al. | Selection of varistor for surge protection purposes based on their voltage-current characteristic | |
| Kamata et al. | Dielectric strength of oil-immersed transformer insulation with superimposed AC and lightning impulse voltage | |
| CN101846722B (en) | Chopped wave lightning impulse test device and method of transformer | |
| CN102246052B (en) | The device of the system unit of high-voltage pulse checking system | |
| CN205353276U (en) | Testing system of oily handstand formula CT end screen imperfect earth trouble of simulation | |
| Sriyono et al. | SFRA characteristics of power transformer internal winding considering the resonant effect | |
| Nugroho et al. | Impact of arrester models in placement determination at 150 kV Srondol substation | |
| CN104820148A (en) | Over-voltage measurement and simulation test platform of power transmission line | |
| Nobre et al. | An alternative to reduce medium-voltage transient recovery voltage peaks | |
| KR102352241B1 (en) | Test system for hemp threat level illumination and test methods for hemp induced current on antennas | |
| Ravichandran et al. | Selection of viable distribution line surge arrester for prospective optimal protection | |
| Meshkatodini et al. | Comparative study of the effect of various shields on lightning electric field in power transformer windings | |
| Zhou et al. | Test circuit of impulse spark‐over voltage with different rates of rise for gas discharge tubes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |