CN1467758A - Slice matching method for large capacity metal oxide pressure-limiting device - Google Patents
Slice matching method for large capacity metal oxide pressure-limiting device Download PDFInfo
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Abstract
The present invention discloses a sheet matching method for a metal oxide voltage limiter, supposing the parallel column number of the voltage limiter valve sheets as m, and the series valve sheet number of each column as n, characterized by: when matching primarily, adopting "merging method", in that, defining n groups of regions in each of which includes m sub regions, putting the selected m * n valve sheets into the corresponding sub regions in the order of the voltage, picking out two groups of the regions having maximal pressure differences every time and merging them according to certain rule, as while removing void regions until only one group of region left at last, if the pressure difference between the sub regions exceeding the allowable band, then processing to match in detail. When matching in detail, adopting "exchanging method", Selecting a group of valve sheets from each of the two sub regions having maximal pressure differences according to a certain rule, making the pressure difference reduced until the maximum pressure difference is in the range of the specified value or cannot be reduced any more.
Description
Technical field
The present invention relates to a kind of slice matching method for large capacity metal oxide pressure-limiting device.
Background technology
Large capacity metal oxide pressure-limiting device (lightning arrester, MOV, MOA) is a kind of vitals that is used for large value capacitor group (as series compensation capacitor group, direct current system neutral bus capacitor group, big capacity filter capacitor group etc.) overvoltage protection.Because the capacity of this voltage limiter is very big, therefore need form a plurality of valve block posts by number of metal oxide resistor sheet (valve block) series connection back, and then the use that is together in parallel, to consume the huge energy that overvoltage is brought.
At home, although multicolumn (mostly being 3 posts most) lightning arrester product in parallel is also arranged, but this lightning arrester just that those DC reference voltage are relatively consistent valve block when joining sheet carries out series and parallel and joins sheet, wishes that with this each valve block column current shunting is evenly consumed energy quite when lightning arrester moves.But because the good nonlinear characteristic of metal oxide valve block and lack slice matching method necessary, rule, the uniformity of each post shunting when action is actually and is difficult to guarantee in its lightning arrester.
Some external lightning arrester manufactories are when solving the equal flow problem of this multicolumn lightning arrester connected in parallel, mainly be to rely on the large-scale experiment equipment that they had, in parallel the rising of two column valve sheets do not applied surge voltage, and according to the two post shunting situation adjustment valve block of a post wherein, within the specific limits with the difference control of two posts shunting.Therefore this method must have large-scale experiment equipment, and this is a necessary condition.This method is not an optimum method optimum or approaching, and the difference that just will shunt is controlled at the lazy way that gets final product in a certain given range.
For these big capacity voltage limiters, the bad bigger valve block post of those shuntings that will cause of current-sharing is crossed cause thermal damage, even whole voltage limiter unit exploded, cause power system accident, thereby must find a kind of method, this voltage limiter flows through each valve block post when action electric current is shunted evenly.
Summary of the invention
The purpose of this invention is to provide a kind of slice matching method for large capacity metal oxide pressure-limiting device, use this method, can make electric current shunting that voltage limiter the time flows through each valve block post in action evenly, prevent that effectively indivedual valve block posts from crossing cause thermal damage, to guarantee the safety of voltage limiter.
For achieving the above object, the present invention takes following design: the slice matching method of this large capacity metal oxide pressure-limiting device is as follows:
Suppose that the post number that voltage limiter needs is m, each post middle valve plate series connection number is n.At first adopt " conflation algorithm " tentatively to join sheet, form m valve block post:
1) delimit n group zone, set every group of zone and contain the m sub regions, each subregion can hold n valve block at least;
2) mxn valve block sorted by voltage (the voltage here refers to the residual voltage under DC reference voltage or the operating current) size, it is the highest to set the valve block voltage that first subregion in first group of zone places, the valve block voltage that the m sub regions in n group zone is placed is minimum, and one by one mxn valve block is put into each subregion successively in proper order according to this respectively;
3) calculate the maximum differential pressure that each organizes regional middle valve plate voltage, and with the pressure reduction of this pressure reduction as this group valve block;
4) in existing valve block group zone, select two valve block group zones of pressure reduction maximum;
5) will be wherein valve block in one group of zone be integrated in another group zone according to following rule and go: all valve blocks in the m work song zone in this zone are integrated in another the 1st work song zone, group zone go, all valve blocks in this regional m-1 work song zone are integrated into another to be organized in the 2nd work song zone and goes, all valve blocks in this regional m-2 work song zone are integrated in another the 3rd work song zone, group zone go, the rest may be inferred;
One group of zone that 6) will be available is removed, and differentiates whether remaining areas group number is 1, if equal 1, then turns to the 8th) bar;
7) remaining areas group number is greater than 1: then
A) summation of that each the subregion middle valve plate voltage of group zone after the calculating merger;
B) press voltage summation size, to each subregion rearrangement in that group zone after the merger, make the 1st work song zone middle valve plate voltage summation the highest, m work song zone middle valve plate voltage summation is minimum;
C) calculate the maximum differential pressure of this group zone middle valve plate voltage summation after the merger;
D) repeating step 4);
8) preliminary merging optimization process finishes;
9) calculate the voltage summation of each subregion middle valve plate in only this group zone, i.e. valve block column voltage calculates the maximum differential pressure of all subregion valve block voltage summation in this group zone;
10) if this maximum differential pressure satisfies predefined numerical value requirement, then to shut down, the valve block in each subregion in this group zone is corresponding to needed valve block of valve block post of voltage limiter.Otherwise carrying out fine tuning with " exchanging method " handles:
11) the indivedual valve blocks in two valve block posts of pressure reduction maximum are exchanged adjustment, adjust the back and repeat the 9th) bar.It is as follows that valve block is exchanged regulation rule:
A) from two valve block posts of pressure reduction maximum, respectively select such one group of valve block (1≤quantity≤subregion middle valve plate sum 1/2), the pressure reduction of these two valve block groups is near 1/2 of these two valve block post pressure reduction, and less than the pressure reduction of these two valve block posts, and the high valve block group voltage of valve block column voltage should be higher than the low valve block group voltage of valve block column voltage;
B) exchange this two valve block groups, soon the valve block group of selecting from valve block column voltage Gao Zhezhong is put into the low person of valve block column voltage and goes, and the valve block group that will select from the low person of valve block column voltage is put into valve block column voltage Gao Zhezhong.
Advantage of the present invention is: this slice matching method can utilize existing or practical and simple testing equipment, make full use of all valve blocks as far as possible and make the voltage limiter of multicolumn parallel connection (MOV), and it is the most even or approaching the most even that each the post operating current of MOV that configures is distributed.
Description of drawings
Fig. 1 is the inventive method schematic diagram
Embodiment
The present invention's " slice matching method for large capacity metal oxide pressure-limiting device " is a kind of optimization slice matching method of system, its concrete grammar is following (supposes that it is m * n that a large capacity metal oxide pressure-limiting device needs the valve block number altogether, wherein m is a valve block post number, and n is the valve block number of connecting in every valve block post):
At first adopt " conflation algorithm " slightly to join, make mxn valve block form m valve block post:
1) delimit n group zone, set every group of zone and contain the m sub regions, each subregion can hold n valve block at least;
Distribution situation is set as shown in Figure 1 in the zone, suppose the individual subregion of depositing the strip of valve block of mxn placed side by side, can hold n valve block at least in each subregion.These zones have been divided into the n group, in each group the m sub regions are arranged.
Because all can there be certain difference in the DC reference voltage or the residual voltage under the operating current of each valve block, therefore, want to make each valve block post electric current distributed uniform when pressure limiting in parallel, at first must survey the DC reference voltage of each valve block or the residual voltage under the operating current.This point is easy to accomplish, does not need large-scale experiment equipment.If join sheet,,, just survey its residual voltage if join sheet with the residual voltage under the operating current with regard to the DC reference voltage of side valve sheet with DC reference voltage.These measured datas are bases that voltage limiter is joined sheet, and can be realized by prior art.
2) with mxn selected valve block by big or small ordering of voltage (the voltage here refer to the DC reference voltage of valve block or the residual voltage under the operating current), set the valve block voltage the highest (or minimum) of first subregion placement in first group of zone, n organizes the valve block voltage minimum (or the highest) of the m sub regions placement in zone, and successively man valve block is put into each subregion one by one respectively according to this order.
3) calculate the maximum differential pressure that each organizes regional middle valve plate voltage, and with this pressure reduction as the pressure reduction of this group valve block (the valve block voltage that this pressure reduction equals the 1st work song zone in this group zone deducts the valve block voltage in m work song zone).
4) in existing valve block group zone (when beginning most, existing valve block group number of regions be n) selects two valve block group zones (if having only two valve block group zones, then two of the pressure reduction maximum valve block group zones are exactly these two valve block group zones) of pressure reduction maximum.
5) will be wherein valve block in one group of zone be integrated in another group zone according to following rule and go: all valve blocks in the m work song zone in this zone are integrated in another the 1st work song zone, group zone go, all valve blocks in the m-1 work song zone in this zone are integrated into another to be organized in the 2nd work song zone and goes, all valve blocks in this regional m-2 work song zone are integrated in another the 3rd work song zone, group zone go, the rest may be inferred;
One group of zone that 6) will be available is removed, and judge whether remaining areas group number is 1: be 1, then " merger " optimizing process (promptly slightly joining) finishes, and turns to for the 8th step, adjusts valve block with " exchanging method " and carefully joins;
7) remaining areas group number is then proceeded merger and is handled greater than 1:
A) summation of that each the subregion middle valve plate voltage of group zone after the calculating merger;
B) press voltage summation size, to each subregion rearrangement of that group zone after the merger (and only being this group), the 1st work song zone middle valve plate voltage summation the highest (minimum), m work song zone middle valve plate voltage summation minimum (the highest);
C) calculate the maximum differential pressure of this group zone (and only being this group) the middle valve plate voltage summation after the merger, and with the pressure reduction of this pressure reduction as this group valve block.The valve block voltage summation that this pressure reduction equals the 1st work song zone in this group zone deducts the valve block voltage summation in m work song zone.
D) repeating step 4);
Because the 5th) the one group of zone that is available has been got rid of when going on foot, therefore above processing procedure is whenever carried out a circulation, will get rid of one group of zone, to the last remaining unique one group of zone.
8) " conflation algorithm " slightly joins the process end, uses " exchanging method " to exchange adjustment individually as required again with handling the remaining unique one group of zone valve block in back;
The ordering that it should be noted that valve block voltage both can be arranged from big to small, also can arrange from small to large, as long as guarantee the 7th) step b) ordering and the 1st) ordering that goes on foot is consistent, resulting final process result is exactly identical.In addition, because the electric current and the voltage of valve block exist corresponding relation, it also is fully passable tentatively joining sheet with valve block operating current under the identical residual voltage or the reference current under the same reference voltage by above-mentioned slice matching method.
9) calculate the voltage summation of each subregion middle valve plate in this group zone, i.e. valve block column voltage calculates the maximum differential pressure of all subregion valve block voltage summation in this group zone;
10) if this maximum differential pressure satisfies predefined numerical value requirement, then to shut down, the valve block in each subregion in this group zone is corresponding to needed valve block of valve block post of voltage limiter.Otherwise carry out:
11) valve block in two valve block posts of pressure reduction maximum is exchanged adjustment, adjusts the back and repeat the 9th) bar.It is as follows that valve block is exchanged regulation rule:
A) from two valve block posts of pressure reduction maximum, respectively select such one group of valve block (1≤quantity≤subregion middle valve plate sum 1/2), the pressure reduction of these two valve block groups is near 1/2 of these two valve block post pressure reduction, and less than the pressure reduction of these two valve block posts, and the high valve block group voltage of valve block column voltage should be higher than the low valve block group voltage of valve block column voltage;
B) exchange this two valve block groups, soon the valve block group of selecting from valve block column voltage Gao Zhezhong is put into the low person of valve block column voltage and goes, and the valve block group that will select from the low person of valve block column voltage is put into valve block column voltage Gao Zhezhong.
Join the sheet processing procedure at above voltage limiter, worked out a calculation procedure with Visual Basic, the entire process process can be finished in moment.
This slice matching method can be applicable to big capacity voltage limiter and similarly lightning arrester manufacturing.
Be illustrated with specific embodiment below:
The development of embodiment 1:MOV model machine
The MOV model machine has 3 unit, and 4 valve block posts are arranged in each unit, and each valve block post is composed in series (n=6) by 6 zinc oxide valve plates, composes in parallel (m=12) so this MOV model machine has 12 valve block posts, and model machine has 72 of valve blocks (mxn=72).Cooperating the residual voltage under the electric current with 500A below is that valve block voltage illustrates its whole sheet process of joining.
In order to obtain the residual voltage of these valve blocks, the spy tests it, and result of the test is as shown in the table:
The residual voltage of 72 valve blocks under the 500A impulse current that table 1 MOV model machine uses
| The valve block numbering | Residual voltage (kV) | The valve block numbering | Residual voltage (kV) | The valve block numbering | Residual voltage (kV) | The valve block numbering | Residual voltage (kV) | The valve block numbering | Residual voltage (kV) |
| ??0305 | ?6.29574 | ??0752 | ?6.05391 | ??0177 | ?6.32126 | ??0388 | ?6.51191 | ??0390 | ?6.48358 |
| ??0880 | ?6.13787 | ??0879 | ?6.03800 | ??0759 | ?6.50163 | ??0877 | ?6.48661 | ??0384 | ?6.51866 |
| ??0294 | ?6.38639 | ??1040 | ?6.44397 | ??0758 | ?6.54313 | ??0076 | ?6.42275 | ??1044 | ?6.53428 |
| ??0070 | ?6.47386 | ??0067 | ?6.43974 | ??0883 | ?6.33735 | ??0072 | ?6.38945 | ??0381 | ?6.50415 |
| ??0385 | ?6.41187 | ??0383 | ?6.45128 | ??0882 | ?6.44671 | ??0075 | ?6.45744 | ??0391 | ?6.50785 |
| ??0757 | ?6.05515 | ??0875 | ?6.45120 | ??0172 | ?6.36584 | ??0077 | ?6.47651 | ??0677 | ?6.49044 |
| ??0507 | ?6.12556 | ??0753 | ?5.97153 | ??0878 | ?6.36115 | ??1096 | ?6.48814 | ??0755 | ?6.48042 |
| ??0179 | ?6.49935 | ??0873 | ?6.25589 | ??0182 | ?6.36372 | ??0073 | ?6.47028 | ??0761 | ?6.36674 |
| ??0760 | ?6.47663 | ??0763 | ?6.05837 | ??0178 | ?6.38171 | ??1050 | ?6.51573 | ??0176 | ?6.48058 |
| ??0872 | ?6.45505 | ??0506 | ?5.93469 | ??0069 | ?6.43777 | ??0066 | ?6.48262 | ??0881 | ?6.46630 |
| ??0874 | ?6.40212 | ??0181 | ?6.37813 | ??0068 | ?6.44684 | ??0183 | ?6.54573 | ??0175 | ?6.47365 |
| ??0762 | ?6.40527 | ??0074 | ?6.41941 | ??0380 | ?6.45096 | ??0756 | ?6.40798 | ??0173 | ?6.50260 |
| ??0386 | ?6.41279 | ??0302 | ?6.34146 | ??0382 | ?6.48683 | ??0389 | ?6.49043 | ||
| ??0071 | ?6.22849 | ??0298 | ?6.34701 | ??0295 | ?6.45221 | ??0180 | ?6.36391 | ||
| ??0754 | ?6.27004 | ??0674 | ?6.31405 | ??1089 | ?6.44512 | ??0174 | ?6.44861 |
After valve block in the table 1 sorted from high to low according to residual voltage, put into table 2 successively.Can place 6 valve blocks at least in each regional number in the table 2 and the lattice of subregion correspondence.Being the valve block numbering before "/" symbol in the lattice, is the voltage (being residual voltage here) after all valve block series connection in these lattice afterwards.
Table 2
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | Zone 5 | Zone 6 | |
| Subregion 1 | ??0183/6.54573 | ??0389/6.49043 | ??0073/6.47028 | ??1040/6.44397 | ??0178/6.38171 | ??0305/6.29574 |
| Subregion 2 | ??0758/6.54313 | ??1096/6.48814 | ??0881/6.46630 | ??0067/6.43974 | ??0181/6.37813 | ??0754/6.27004 |
| Subregion 3 | ??1044/6.53428 | ??0382/6.48683 | ??0075/6.45744 | ??0069/6.43777 | ??0761/6.36674 | ??0873/6.25589 |
| Subregion 4 | ??0384/6.51866 | ??0877/6.48661 | ??0872/6.45505 | ??0076/6.42276 | ??0172/6.36584 | ??0071/6.22849 |
| Subregion 5 | ??1050/6.51574 | ??0390/6.48358 | ??0295/6.45221 | ??0074/6.41941 | ??0180/6.36391 | ??0880/6.13787 |
| Subregion 6 | ??0388/6.51191 | ??0066/6.48262 | ??0383/6.45128 | ??0386/6.41279 | ??0182/6.36372 | ??0507/6.12556 |
| Subregion 7 | ??0391/6.50785 | ??0176/6.48050 | ??0875/6.45120 | ??0385/6.41187 | ??0878/6.36115?? | ??0763/6.05837 |
| Subregion 8 | ??0381/6.50415 | ??0755/6.48042 | ??0380/6.45096 | ??0756/6.40798 | ??0298/6.34701 | ??0757/6.05515 |
| Subregion 9 | ??0173/6.50260 | ??0760/6.47663 | ??0174/6.44861 | ??0762/6.40527 | ??0302/6.34146 | ??0752/6.05391 |
| Subregion 10 | ??0759/6.50163 | ??0077/6.47651 | ??0068/6.44684 | ??0874/6.40212 | ??0883/6.33735 | ??0879/6.03800 |
| Subregion 11 | ??0179/6.49935 | ??0070/6.47386 | ??0882/6.44671 | ??0072/6.38945 | ??0177/6.32127 | ??0753/5.97153 |
| Subregion 12 | ??0677/6.49044 | ??0175/6.47365 | ??1089/6.44512 | ??0294/6.38639 | ??0674/6.31405 | ??0506/5.93469 |
| Maximum differential pressure | ??55.29V | ??16.78V | ??25.16V | ??57.58V | ??67.66V | ??361.05V |
Two zones with maximum differential pressure are zone 5 and zone 6.According to the rule of step 5), the valve block of zone in 6 merged in the zone 5 go, and remove zone 6 according to step 6, a) calculate all subregion valve block voltage summation in the zone 5 according to step 7), as shown in table 3:
Table 3
Resequenced and calculate maximum differential pressure in zone 5, promptly execution in step 7) b) and 7) c), obtain table 4.
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | Zone 5 | |
| Subregion 1 | ?0183/6.54573 | ??0389/6.49043 | ??0073/6.47028 | ??1040/6.44397 | ????0178，0506/12.31640 |
| Subregion 2 | ?0758/6.54313 | ??1096/6.48814 | ??0881/6.46630 | ??0067/6.43974 | ????0181，0753/12.34966 |
| Subregion 3 | ?1044/6.53428 | ??0382/6.48683 | ??0075/6.45744 | ??0069/6.43777 | ????0761，0879/12.40474 |
| Subregion 4 | ?0384/6.51866 | ??0877/6.48661 | ??0872/6.45505 | ??0076/6.42276 | ????0172，0752/12.41975 |
| Subregion 5 | ?1050/6.51574 | ??0390/6.48358 | ??0295/6.45221 | ??0074/6.41941 | ????0180，0757/12.41906 |
| Subregion 6 | ?0388/6.51191 | ??0066/6.48262 | ??0383/6.45128 | ??0386/6.41279 | ????0182，0763/12.42209 |
| Subregion 7 | ?0391/6.50785 | ??0176/6.48050 | ??0875/6.45120 | ??0385/6.41187 | ????0878，0507/12.48671 |
| Subregion 8 | ?0381/6.50415 | ??0755/6.48042 | ??0380/6.45096 | ??0756/6.40798 | ????0298，0880/12.48488 |
| Subregion 9 | ?0173/6.50260 | ??0760/6.47663 | ??0174/6.44861 | ??0762/6.40527 | ????0302，0071/12.56995 |
| Subregion 10 | ?0759/6.50163 | ??0077/6.47651 | ??0068/6.44684 | ??0874/6.40212 | ????0883，0873/12.59324 |
| Subregion 11 | ?0179/6.49935 | ??0070/6.47386 | ??0882/6.44671 | ??0072/6.3?8945 | ????0177，0754/12.59131 |
| Subregion 12 | ?0677/6.49044 | ??0175/6.47365 | ??1089/6.44512 | ??0294/6.38639 | ????0674，0305/12.60979 |
| Maximum differential pressure | ?55.29V | ??16.78V | ??25.16V | ??57.58V |
Table 4
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | Zone 5 | |
| Subregion 1 | ??0183/6.54573 | ??0389/6.49043 | ??0073/6.47028 | ??040/6.44397 | ????0674，0305/12.60979 |
| Subregion 2 | ??0758/6.54313 | ??1096/6.48814 | ??0881/6.46630 | ??0067/6.43974 | ????0883，0873/12.59324 |
| Subregion 3 | ??1044/6.53428 | ??0382/6.48683 | ??0075/6.45744 | ??0069/6.43777 | ????0177，0754/12.59131 |
| Subregion 4 | ??0384/6.51866 | ??0877/6.48661 | ??0872/6.45505 | ??0076/6.42276 | ????0302，0071/12.56995 |
| Subregion 5 | ??1050/6.51574 | ??0390/6.48358 | ??0295/6.45221 | ??0074/6.41941 | ????0878，0507/12.48671 |
| Subregion 6 | ??0388/6.51191 | ??0066/6.48262 | ??0383/6.45128 | ??0386/6.41279 | ????0298，0880/12.48488 |
| Subregion 7 | ??0391/6.50785 | ??0176/6.48050 | ??0875/6.45120 | ??0385/6.41187 | ????0182，0763/12.42209 |
| Subregion 8 | ??0381/6.50415 | ??0755/6.48042 | ??0380/6.45096 | ??0756/6.40798 | ????0172，0752/12.41975 |
| Subregion 9 | ??0173/6.50260 | ??0760/6.47663 | ??0174/6.44861 | ??0762/6.40527 | ????0180，0757/12.41906 |
| Subregion 10 | ??0759/6.50163 | ??0077/6.47651 | ??0068/6.44684 | ??0874/6.40212 | ????0761，0879/12.40474 |
| Subregion 11 | ??0179/6.49935 | ??0070/6.47386 | ??0882/6.44671 | ??0072/6.38945 | ????0181，0753/12.34966 |
| Subregion 12 | ??0677/6.49044 | ??0175/6.47365 | ??1089/6.44512 | ??0294/6.38639 | ????0178，0506/12.31640 |
| Maximum differential pressure | ??55.29V | ??16.78V | ??25.16V | ??57.58V | ????293.39V |
Handle owing to also have 5 zones will carry out merger in the table 4, therefore carry out 7) d) after, carry out step 4) again.As shown in Table 4, two zones with maximum differential pressure are zone 4 and zone 5.According to the rule of step 5), the valve block of zone in 5 merged in the zone 4 go, and remove zone 5 according to step 6, a) calculate all subregion valve block voltage summation in the zone 4 according to step 7), as shown in table 5:
Table 5
Resequenced and calculate maximum differential pressure in zone 4, promptly execution in step 7) b) and 7) c), obtain table 6.
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | |
| Subregion 1 | ???0183/6.54573 | ????0389/6.49043 | ???0073/6.47028 | ???1040，0178，0506/18.76037 |
| Subregion 2 | ???0758/6.54313 | ????1096/6.48814 | ???0881/6.46630 | ???0067，0181，0753/18.78940 |
| Subregion 3 | ???1044/6.53428 | ????0382/6.48683 | ???0075/6.45744 | ???0069，0761，0879/18.84251 |
| Subregion 4 | ???0384/6.51866 | ????0877/6.48661 | ???0872/6.45505 | ???0076，0180，0757/18.84182 |
| Subregion 5 | ???1050/6.51574 | ????0390/6.48358 | ???0295/6.45221 | ???0074，0172，0752/18.83916 |
| Subregion 6 | ???0388/6.51191 | ????0066/6.48262 | ???0383/6.45128 | ???0386，0182，0763/18.83488 |
| Subregion 7 | ???0391/6.50785 | ????0176/6.48050 | ???0875/6.45120 | ???0385，0298，0880/18.89675 |
| Subregion 8 | ???0381/6.50415 | ????0755/6.48042 | ???0380/6.45096 | ???0756，0878，0507/18.89469 |
| Subregion 9 | ???0173/6.50260 | ????0760/6.47663 | ???0174/6.44861 | ???0762，0302，0071/18.97522 |
| Subregion 10 | ???0759/6.50163 | ????0077/6.47651 | ???0068/6.44684 | ???0874，0177，0754/18.99343 |
| Subregion 11 | ???0179/6.49935 | ????0070/6.47386 | ???0882/6.44671 | ???0072，0883，0873/18.98269 |
| Subregion 12 | ???0677/6.49044 | ????0175/6.47365 | ???1089/6.44512 | ???0294，0674，0305/18.99618 |
| Maximum differential pressure | ???55.29V | ????16.78V | ???25.16V |
Table 6
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | |
| Subregion 1 | ????0183/6.54573 | ?????0389/6.49043 | ???0073/6.47028 | ???0294，0674，0305/18.99618 |
| Subregion 2 | ????0758/6.54313 | ?????1096/6.48814 | ???0881/6.46630 | ???0874，0177，0754/18.99343 |
| Subregion 3 | ????1044/6.53428 | ?????0382/6.48683 | ???0075/6.45744 | ???0072，0883，0873/18.98269 |
| Subregion 4 | ????0384/6.51866 | ?????0877/6.48661 | ???0872/6.45505 | ???0762，0302，0071/18.97522 |
| Subregion 5 | ????1050/6.51574 | ?????0390/6.48358 | ???0295/6.45221 | ???0385，0298，0880/18.89675 |
| Subregion 6 | ????0388/6.51191 | ?????0066/6.48262 | ???0383/6.45128 | ???0756，0878，0507/18.89469 |
| Subregion 7 | ????0391/6.50785 | ?????0176/6.48050 | ???0875/6.45120 | ???0069，0761，0879/18.84251 |
| Subregion 8 | ????0381/6.50415 | ?????0755/6.48042 | ???0380/6.45096 | ???0076，0180，0757/18.84182 |
| Subregion 9 | ????0173/6.50260 | ?????0760/6.47663 | ???0174/6.44861 | ???0074，0172，0752/18.83916 |
| Subregion 10 | ????0759/6.50163 | ?????0077/6.47651 | ???0068/6.44684 | ???0386，0182，0763/18.83488 |
| Subregion 11 | ????0179/6.49935 | ?????0070/6.47386 | ???0882/6.44671 | ???0067，0181，0753/18.78940 |
| Subregion 12 | ????0677/6.49044 | ?????0175/6.47365 | ???1089/6.44512 | ???1040，0178，0506/18.76037 |
| Maximum differential pressure | ????55.29V | ?????16.78V | ???25.16V | ???235.81V |
Handle owing to also have 4 zones will carry out merger in the table 6, therefore carry out 7 once more) d) after, carry out step 4) again.As shown in Table 6, two zones with maximum differential pressure are zone 1 and zone 4.According to the rule of step 5), the valve block of zone in 4 merged in the zone 1 go, and remove zone 4 according to step 6, a) calculate all subregion valve block voltage summation in the zone 1 according to step 7), as shown in table 7:
Table 7
Resequenced and calculate maximum differential pressure in zone 1, promptly execution in step 7) b) and 7) c), obtain table 8.
| Zone 1 | Zone 2 | Zone 3 | |
| Subregion 1 | ????0183，1040，0178，0506/25.30610 | ????0389/6.49043 | ????0073/6.47028 |
| Subregion 2 | ????0758，0067，0181，0753/25.33253 | ????1096/6.48814 | ????0881/6.46630 |
| Subregion 3 | ????1044，0386，0182，0763/25.36916 | ????0382/6.48683 | ????0075/6.45744 |
| Subregion 4 | ????0384，0074，0172，0752/25.35782 | ????0877/6.48661 | ????0872/6.45505 |
| Subregion 5 | ????1050，0076，0180，0757/25.35756 | ????0390/6.48358 | ????0295/6.45221 |
| Subregion 6 | ????0388，0069，0761，0879/25.35442 | ????0066/6.48262 | ????0383/6.45128 |
| Subregion 7 | ????0391，0756，0878，0507/25.40254 | ????0176/6.48050 | ????0875/6.45120 |
| Subregion 8 | ????0381，0385，0298，0880/25.40090 | ????0755/6.48042 | ????0380/6.45096 |
| Subregion 9 | ????0173，0762，0302，0071/25.47782 | ????0760/6.47663 | ????0174/6.44861 |
| Subregion 10 | ????0759，0072，0883，0873/25.48432 | ????0077/6.47651 | ????0068/6.44684 |
| Subregion 11 | ????0179，0874，0177，0754/25.49278 | ????0070/6.47386 | ????0882/6.44671 |
| Subregion 12 | ????0677，0294，0674，0305/25.48662 | ????0175/6.47365 | ????1089/6.44512 |
| Maximum differential pressure | ????16.78V | ????25.16V |
Table 8
| Zone 1 | Zone 2 | Zone 3 | |
| Subregion 1 | ????0179，0874，0177，0754/25.49278 | ????0389/6.49043 | ????0073/6.47028 |
| Subregion 2 | ????0677，0294，0674，0305/25.48662 | ????1096/6.48814 | ????0881/6.46630 |
| Subregion 3 | ????0759，0072，0883，0873/25.48432 | ????0382/6.48683 | ????0075/6.45744 |
| Subregion 4 | ????0173，0762，0302，0071/25.47782 | ????0877/6.48661 | ????0872/6.45505 |
| Subregion 5 | ????0391，0756，0878，0507/25.40254 | ????0390/6.48358 | ????0295/6.45221 |
| Subregion 6 | ????0381，0385，0298，0880/25.40090 | ????0066/6.48262 | ????0383/6.45128 |
| Subregion 7 | ????1044，0386，0182，0763/25.36916 | ????0176/6.48050 | ????0875/6.45120 |
| Subregion 8 | ????0384，0074，0172，0752/25.35782 | ????0755/6.48042 | ????0380/6.45096 |
| Subregion 9 | ????1050，0076，0180，0757/25.35756 | ????0760/6.47663 | ????0174/6.44861 |
| Subregion 10 | ????0388，0069，0761，0879/25.35442 | ????0077/6.47651 | ????0068/6.44684 |
| Subregion 11 | ????0758，0067，0181，0753/25.33253 | ????0070/6.47386 | ????0882/6.44671 |
| Subregion 12 | ????0183，1040，0178，0506/25.30610 | ????0175/6.47365 | ????1089/6.44512 |
| Maximum differential pressure | ????186.68V | ????16.78V | ????25.16V |
Handle owing to also have 3 zones will carry out merger in the table 8, therefore carry out 7 once more) d) after, carry out step 4) again again.As shown in Table 8, two zones with maximum differential pressure are zone 1 and zone 3.According to the rule of step 5), the valve block of zone in 3 merged in the zone 1 go, and remove zone 3 according to step 6, a) calculate all subregion valve block voltage summation in the zone 1 according to step 7), as shown in table 9:
Table 9
| Zone 1 | Zone 2 | |
| Subregion 1 | ????0179，0874，0177，0754，1089/31.93790 | ??????0389/6.49043 |
| Subregion 2 | ????0677，0294，0674，0305，0882/31.93333 | ??????1096/6.48814 |
| Subregion 3 | ????0759，0072，0883，0873，0068/31.93116 | ??????0382/6.48683 |
| Subregion 4 | ????0173，0762，0302，0071，0174/31.92643 | ??????0877/6.48661 |
| Subregion 5 | ????0391，0756，0878，0507，0380/31.85350 | ??????0390/6.48358 |
| Subregion 6 | ????0381，0385，0298，0880，0875/31.85210 | ??????0066/6.48262 |
| Subregion 7 | ????1044，0386，0182，0763，0383/31.82044 | ??????0176/6.48050 |
| Subregion 8 | ????0384，0074，0172，0752，0295/31.81003 | ??????0755/6.48042 |
| Subregion 9 | ????1050，0076，0180，0757，0872/31.81261 | ??????0760/6.47663 |
| Subregion 10 | ????0388，0069，0761，0879，0075/31.81186 | ??????0077/6.47651 |
| Subregion 11 | ????0758，0067，0181，0753，0881/31.79883 | ??????0070/6.47386 |
| Subregion 12 | ????0183，1040，0178，0506，0073/31.77638 | ??????0175/6.47365 |
| Maximum differential pressure | ??????16.78V |
Resequence and calculate maximum differential pressure in zone 1 in the his-and-hers watches 9, promptly execution in step 7) b) and 7) c), obtain table 10.
Table 10
| Zone 1 | Zone 2 | |
| Subregion 1 | ????0179，0874，0177，0754，1089/31.93790 | ??????0389/6.49043 |
| Subregion 2 | ????0677，0294，0674，0305，0882/31.93333 | ??????1096/6.48814 |
| Subregion 3 | ????0759，0072，0883，0873，0068/31.93116 | ??????0382/6.48683 |
| Subregion 4 | ????0173，0762，0302，0071，0174/31.92643 | ??????0877/6.48661 |
| Subregion 5 | ????0391，0756，0878，0507，0380/31.85350 | ??????0390/6.48358 |
| Subregion 6 | ????0381，0385，0298，0880，0875/31.85210 | ??????0066/6.48262 |
| Subregion 7 | ????1044，0386，0182，0763，0383/31.82044 | ??????0176/6.48050 |
| Subregion 8 | ????1050，0076，0180，0757，0872/31.81261 | ??????0755/6.48042 |
| Subregion 9 | ????0388，0069，0761，0879，0075/31.81186 | ??????0760/6.47663 |
| Subregion 10 | ????0384，0074，0172，0752，0295/31.81003 | ??????0077/6.47651 |
| Subregion 11 | ????0758，0067，0181，0753，0881/31.79883 | ??????0070/6.47386 |
| Subregion 12 | ????0183，1040，0178，0506，0073/31.77638 | ??????0175/6.47365 |
| Maximum differential pressure | ????161.52V | ??????16.78V |
Also have two last zones need carry out merger in the table 10 and handle, therefore carry out 7 once more) d) after, carry out step 4) again.According to the rule of step 5), the valve block of zone in 2 merged in the zone 1 go, and remove zone 2 according to step 6, a) calculate all subregion valve block voltage summation in the zone 1 according to step 7), as shown in table 11:
Table 11
| Zone 1 | |
| Subregion 1 | ????0179，0874，0177，0754，1089，0175/38.41155 |
| Subregion 2 | ????0677，0294，0674，0305，0882，0070/38.40719 |
| Subregion 3 | ????0759，0072，0883，0873，0068，0077/38.40767 |
| Subregion 4 | ????0173，0762，0302，0071，0174，0760/38.40306 |
| Subregion 5 | ????0391，0756，0878，0507，0380，0755/38.33392 |
| Subregion 6 | ????0381，0385，0298，0880，0875，0176/38.33260 |
| Subregion 7 | ????1044，0386，0182，0763，0383，0066/38.30306 |
| Subregion 8 | ????1050，0076，0180，0757，0872，0390/38.29619 |
| Subregion 9 | ????0388，0069，0761，0879，0075，0877/38.29847 |
| Subregion 10 | ????0384，0074，0172，0752，0295，0382/38.29686 |
| Subregion 11 | ????0758，0067，0181，0753，0881，1096/38.28697 |
| Subregion 12 | ????0183，1040，0178，0506，0073，0389/38.26681 |
| Maximum differential pressure |
Resequence and calculate maximum differential pressure in zone 1 in the his-and-hers watches 11, promptly execution in step 7) b) and 7) c), obtain table 12.
Table 12
| Zone 1 | |
| Subregion 1 | ???0179，0874，0177，0754，1089，0175/38.41155 |
| Subregion 2 | ???0759，0072，0883，0873，0068，0077/38.40767 |
| Subregion 3 | ???0677，0294，0674，0305，0882，0070/38.40719 |
| Subregion 4 | ???0173，0762，0302，0071，0174，0760/38.40306 |
| Subregion 5 | ???0391，0756，0878，0507，0380，0755/38.33392 |
| Subregion 6 | ???0381，0385，0298，0880，0875，0176/38.33260 |
| Subregion 7 | ???1044，0386，0182，0763，0383，0066/38.30306 |
| Subregion 8 | ???0388，0069，0761，0879，0075，0877/38.29847 |
| Subregion 9 | ???0384，0074，0172，0752，0295，0382/38.29686 |
| Subregion 10 | ???1050，0076，0180，0757，0872，0390/38.29619 |
| Subregion 11 | ???0758，0067，0181，0753，0881，1096/38.28697 |
| Subregion 12 | ???0183，1040，0178，0506，0073，0389/38.26681 |
| Maximum differential pressure | ???144.74V |
Owing to only be left a unique zone in the table 12, " conflation algorithm " slightly joined optimizing process and finished.Each subregion shown in the table 12 is represented a valve block post, and the average voltage of valve block post is 38.33703kV, and the maximum differential pressure between the valve block post is 144.74V, only is 0.37755% of valve block post average voltage.Because zinc oxide valve plate strong nonlinear characteristic, under such pressure reduction, when the valve block post was in parallel, the current unevenness evenness under its cooperation electric current will be up to about 30 * 0.37755%=11.33%.Therefore need between the valve block post, carry out the adjustment of exchanging of indivedual valve blocks to step 11) (promptly " exchanging method ") according to step 9), so that further reduce the maximum voltage difference between the valve block post.Suppose to make the maximum unevenness of intercolumniation electric current to reach in 5%, the intercolumniation maximum differential pressure must be at 5% ÷ 30=0.16%, and corresponding voltage difference is about 61V.
Need between subregion 1 and subregion 12, carry out the adjustment of exchanging of indivedual valve blocks as can be known by step 9) and step 10).According in the step 11) a) No. 1089 valve blocks in the subregion 1 and the voltage difference between No. 0178 valve block in the subregion 12 are 63.41V as can be known, near 144.74/2=72.37V, and satisfy other and exchange condition, the situation after these two valve blocks are changed over is as shown in table 13.
Table 13
| Zone 1 | |
| Subregion 1 | ??0179，0874，0177，0754，0178，0175/38.34814 |
| Subregion 2 | ??0759，0072，0883，0873，0068，0077/38.40767 |
| Subregion 3 | ??0677，0294，0674，0305，0882，0070/38.40719 |
| Subregion 4 | ??0173，0762，0302，0071，0174，0760/38.40306 |
| Subregion 5 | ??0391，0756，0878，0507，0380，0755/38.33392 |
| Subregion 6 | ??0381，0385，0298，0880，0875，0176/38.33260 |
| Subregion 7 | ??1044，0386，0182，0763，0383，0066/38.30306 |
| Subregion 8 | ??0388，0069，0761，0879，0075，0877/38.29847 |
| Subregion 9 | ??0384，0074，0172，0752，0295，0382/38.29686 |
| Subregion 10 | ??1050，0076，0180，0757，0872，0390/38.29619 |
| Subregion 11 | ??0758，0067，0181，0753，0881，1096/38.28697 |
| Subregion 12 | ??0183，1040，1089，0506，0073，0389/38.33022 |
| Maximum differential pressure | ??120.70V |
Two sub regions of pressure reduction maximum are subregion 2 and subregion 11 in the table 13, and its difference is 120.70V＞61V, therefore need exchange the valve block of this two sub regions, and the pressure reduction of the two is reduced.According in the step 11) a) as can be known No. 0759 valve block in the subregion 2 and the voltage difference between No. 0067 valve block in the subregion 11 be 61.89V, and satisfy other and exchange condition, the situation after these two valve blocks are changed over is as shown in table 14.
Table 14
| Zone 1 | |
| Subregion 1 | ??0179，0874，0177，0754，0178，0175/38.34814 |
| Subregion 2 | ??0067，0072，0883，0873，0068，0077/38.34578 |
| Subregion 3 | ??0677，0294，0674，0305，0882，0070/38.40719 |
| Subregion 4 | ??0173，0762，0302，0071，0174，0760/38.40306 |
| Subregion 5 | ??0391，0756，0878，0507，0380，0755/38.33392 |
| Subregion 6 | ??0381，0385，0298，0880，0875，0176/38.33260 |
| Subregion 7 | ??1044，0386，0182，0763，0383，0066/38.30306 |
| Subregion 8 | ??0388，0069，0761，0879，0075，0877/38.29847 |
| Subregion 9 | ??0384，0074，0172，0752，0295，0382/38.29686 |
| Subregion 10 | ??1050，0076，0180，0757，0872，0390/38.29619 |
| Subregion 11 | ??0758，0759，0181，0753，0881，1096/38.34886 |
| Subregion 12 | ??0183，1040，1089，0506，0073，0389/38.33022 |
| Maximum differential pressure | ??111.00V |
Two sub regions of pressure reduction maximum are subregion 3 and subregion 10 in the table 14, and its difference is 111.00V＞61V, therefore also need to exchange the valve block of this two sub regions, and the pressure reduction of the two is reduced.According in the step 11) a) as can be known No. 0070 valve block in the subregion 3 and the voltage difference between No. 0076 valve block in the subregion 10 be 51.11V, and satisfy other and exchange condition, the situation after these two valve blocks are changed over is as shown in Table 15.
Table 15
| Zone 1 | |
| Subregion 1 | ??0179，0874，0177，0754，0178，0175/38.34814 |
| Subregion 2 | ??0067，0072，0883，0873，0068，0077/38.34578 |
| Subregion 3 | ??0677，0294，0674，0305，0882，0076/38.35608 |
| Subregion 4 | ??0173，0762，0302，0071，0174，0760/38.40306 |
| Subregion 5 | ??0391，0756，0878，0507，0380，0755/38.33392 |
| Subregion 6 | ??0381，0385，0298，0880，0875，0176/38.33260 |
| Subregion 7 | ??044，0386，0182，0763，0383，0066/38.30306 |
| Subregion 8 | ??0388，0069，0761，0879，0075，0877/38.29847 |
| Subregion 9 | ??0384，0074，0172，0752，0295，0382/38.29686 |
| Subregion 10 | ??1050，0070，0180，0757，0872，0390/38.34730 |
| Subregion 11 | ??0758，0759，0181，0753，0881，1096/38.34886 |
| Subregion 12 | ??0183，1040，1089，0506，0073，0389/38.33022 |
| Maximum differential pressure | ??106.20V |
Two sub regions of pressure reduction maximum are subregion 4 and subregion 9 in the table 15, and its difference is 106.20V＞61V, therefore also need to exchange the valve block of this two sub regions, and the pressure reduction of the two is reduced.According in the step 11) a) as can be known No. 0173 valve block in the subregion 4 and the voltage difference between No. 0295 valve block in the subregion 9 be 50.39V, and satisfy other and exchange condition, the situation after these two valve blocks are changed over is shown in table 16.
Table 16
| Zone 1 | |
| Subregion 1 | ??0179，0874，0177，0754，0178，0175/38.34814 |
| Subregion 2 | ??0067，0072，0883，0873，0068，0077/38.34578 |
| Subregion 3 | ??0677，0294，0674，0305，0882，0076/38.35608 |
| Subregion 4 | ??0295，0762，0302，0071，0174，0760/38.35267 |
| Subregion 5 | ??0391，0756，0878，0507，0380，0755/38.33392 |
| Subregion 6 | ??0381，0385，0298，0880，0875，0176/38.33260 |
| Subregion 7 | ??1044，0386，0182，0763，0383，0066/38.30306 |
| Subregion 8 | ??0388，0069，0761，0879，0075，0877/38.29847 |
| Subregion 9 | ??0384，0074，0172，0752，0173，0382/38.34725 |
| Subregion 10 | ??1050，0070，0180，0757，0872，0390/38.34730 |
| Subregion 11 | ??0758，0759，0181，0753，0881，1096/38.34886 |
| Subregion 12 | ??0183，1040，1089，0506，0073，0389/38.33022 |
| Maximum differential pressure | ??57.61V |
Two sub regions of pressure reduction maximum are subregion 3 and subregion 8 in the table 16, and its difference is 57.61V＜61V, has satisfied halt condition.In fact, computer program be with its adjust to can not further carry out monolithic when adjusting till, shown in table 17 corresponding in this case all subregion valve block numbering and voltage thereof:
Table 17
| Zone 1 | |
| Subregion 1 | ??0179，0175，0874，0178，0177，0754/38.3481kV |
| Subregion 2 | ??1050，0390，0070，0872，0180，0757/38.3473kV |
| Subregion 3 | ??0384，0173，0382，0074，0172，0752/38.3473kV |
| Subregion 4 | ??0077，0068，0067，0072，0883，0873/38.3458kV |
| Subregion 5 | ??0758，0759，1096，0075，0181，0753/38.3400kV |
| Subregion 6 | ??0391，0755，0380，0756，0878，0507/38.3339kV |
| Subregion 7 | ??0381，0176，0875，0385，0298，0880/38.3326kV |
| Subregion 8 | ??0881，0882，0076，0294，0674，0305/38.3320kV |
| Subregion 9 | ??0388，0677，0877，0069，0761，0879/38.3315kV |
| Subregion 10 | ??0183，0389，0073，1089，1040，0506/38.3302kV |
| Subregion 11 | ??1044，0066，0760，0386，0182，0763/38.3284kV |
| Subregion 12 | ??0295，0383，0174，0762，0302，0071/38.3273kV |
| Maximum differential pressure | ??20.8V |
Because the valve block limited amount (having only 72) that provides among the embodiment 1, residual voltage dispersiveness very big (difference of maximum and minimum residual voltage is up to 611.04V), and distributed pole is inhomogeneous (shown in the table 2 of embodiment 1, only 10 valve block maximum differential pressures in the zone 6 are just up to 361.05V, and the pressure reduction of other valve block is much smaller than these 10 valve blocks), the series connection number also has only 6, so this is a very harsh example.However, when adopting this slice matching method, behind the only preliminary merging optimization, valve block intercolumniation maximum differential pressure has just reached 144.74V, and carrying out after intercolumniation (single) valve block exchanges processing, the intercolumniation maximum differential pressure further has been reduced to 20.8V, be 38.33703kV and cooperate the valve block post residual voltage mean value under the electric current 500A, so maximum differential pressure only is 0.0543% of a valve block post residual voltage mean value.Under this pressure reduction, the maximum differential of electric current is 30 * 0.0543%=1.63%, and generally require the unevenness of valve block column current to get final product with interior, so there is no need further to reduce maximum differential pressure between the valve block post exchanging a plurality of valve blocks between the subregion at every turn 5%.
Claims (1)
1, a kind of slice matching method for large capacity metal oxide pressure-limiting device, its feature (method) is:
Suppose that voltage limiter has m valve block post in parallel, each post middle valve plate series connection number is n, then:
1) delimit n group zone, set every group of zone and contain the m sub regions, each subregion can hold n valve block at least;
2) mxn selected valve block pressed the voltage swing ordering, order is put into each subregion with mxn valve block successively one by one according to this respectively;
3) calculate the maximum differential pressure that each organizes regional middle valve plate voltage, and with the pressure reduction of this pressure reduction as this group valve block;
4) in existing valve block group zone, select two valve block group zones of pressure reduction maximum;
5) will be wherein valve block in one group of zone be integrated in another group zone according to following rule and go: all valve blocks in the m work song zone in this zone are integrated in another the 1st work song zone, group zone go, all valve blocks in this regional m-1 work song zone are integrated into another to be organized in the 2nd work song zone and goes, all valve blocks in this regional m-2 work song zone are integrated in another the 3rd work song zone, group zone go, the rest may be inferred;
One group of zone that 6) will be available is removed, and judges whether remaining areas group number is 1, if equal 1, then turns to the 8th) bar;
7) remaining areas group number is greater than 1, then:
A) summation of that each the subregion middle valve plate voltage of group zone after the calculating merger;
B) press voltage summation size, to each subregion rearrangement in that group zone after the merger, make the 1st work song zone middle valve plate voltage summation the highest, m work song zone middle valve plate voltage summation is minimum;
C) calculate the maximum differential pressure of this group zone middle valve plate voltage summation after the merger;
D) repeating step 4);
8) slightly joining the merging optimization process finishes;
9) calculate the voltage summation of each subregion middle valve plate in this group zone, i.e. valve block column voltage calculates the maximum differential pressure of all subregion valve block voltage summation in this group zone;
10) if this maximum differential pressure satisfies predefined numerical value requirement, then to shut down, the valve block in each subregion in this group zone is corresponding to needed valve block of valve block post of voltage limiter; Otherwise carry out:
11) in two valve block posts of pressure reduction maximum indivedual valve blocks exchange adjustment, adjust the back and repeat the 9th) bar; Then to valve block exchange adjust as follows:
A) from two valve block posts of pressure reduction maximum, respectively select such one group of valve block (1≤quantity≤subregion middle valve plate sum 1/2), the pressure reduction of these two groups of valve blocks is near 1/2 of these two valve block post pressure reduction, and less than the pressure reduction of these two valve block posts, and the high valve block group voltage of valve block column voltage should be higher than the low valve block group voltage of valve block column voltage;
B) exchange this two groups of valve blocks, soon the valve block group of selecting from valve block column voltage Gao Zhezhong is put into the low person of valve block column voltage and goes, and the valve block group that will select from the low person of valve block column voltage is put into valve block column voltage Gao Zhezhong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02123955XA CN100342461C (en) | 2002-07-09 | 2002-07-09 | Slice matching method for large capacity metal oxide pressure-limiting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02123955XA CN100342461C (en) | 2002-07-09 | 2002-07-09 | Slice matching method for large capacity metal oxide pressure-limiting device |
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| Publication Number | Publication Date |
|---|---|
| CN1467758A true CN1467758A (en) | 2004-01-14 |
| CN100342461C CN100342461C (en) | 2007-10-10 |
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| Country | Link |
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| CN (1) | CN100342461C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982930A (en) * | 2012-11-14 | 2013-03-20 | 中国电力科学研究院 | Metal oxide varistor (MOV) string resistor type damping resistor for extra-high voltage series compensation |
| CN111781452A (en) * | 2020-06-30 | 2020-10-16 | 西安交通大学 | Method, device and medium for allocating groups of multi-column parallel lightning arrester groups |
| CN112649684A (en) * | 2020-12-09 | 2021-04-13 | 全球能源互联网研究院有限公司 | Method and system for detecting grouping and damage of valve plates in metal oxide voltage limiter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2230661B (en) * | 1989-02-07 | 1993-09-01 | Bowthorpe Ind Ltd | Electrical surge arrester/diverter |
| FR2685532B1 (en) * | 1991-12-20 | 1994-12-30 | Soule Sa | SURGE PROTECTOR WITH IMPROVED MECHANICAL PROPERTIES. |
| JPH08213211A (en) * | 1995-02-07 | 1996-08-20 | Matsushita Electric Ind Co Ltd | Lighting arrestor |
-
2002
- 2002-07-09 CN CNB02123955XA patent/CN100342461C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982930A (en) * | 2012-11-14 | 2013-03-20 | 中国电力科学研究院 | Metal oxide varistor (MOV) string resistor type damping resistor for extra-high voltage series compensation |
| CN102982930B (en) * | 2012-11-14 | 2015-11-04 | 中国电力科学研究院 | A kind of ultra high voltage series compensation MOV crosstalk resistance type damped resistor |
| CN111781452A (en) * | 2020-06-30 | 2020-10-16 | 西安交通大学 | Method, device and medium for allocating groups of multi-column parallel lightning arrester groups |
| CN111781452B (en) * | 2020-06-30 | 2022-04-15 | 国网宁夏电力有限公司电力科学研究院 | Method, device and medium for allocating groups of multi-column parallel lightning arrester groups |
| CN112649684A (en) * | 2020-12-09 | 2021-04-13 | 全球能源互联网研究院有限公司 | Method and system for detecting grouping and damage of valve plates in metal oxide voltage limiter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100342461C (en) | 2007-10-10 |
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