CN203038738U - MOV string resistance damping resistor for extra-high voltage series compensation - Google Patents
MOV string resistance damping resistor for extra-high voltage series compensation Download PDFInfo
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- CN203038738U CN203038738U CN 201220602176 CN201220602176U CN203038738U CN 203038738 U CN203038738 U CN 203038738U CN 201220602176 CN201220602176 CN 201220602176 CN 201220602176 U CN201220602176 U CN 201220602176U CN 203038738 U CN203038738 U CN 203038738U
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- 238000013016 damping Methods 0.000 title abstract description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000011787 zinc oxide Substances 0.000 claims abstract description 56
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 3
- 150000004706 metal oxides Chemical class 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides an MOV (metal oxide varistor) string resistance damping resistor for extra-high voltage series compensation, which comprises an MOV part 1 and a linear resistor part 2, wherein the MOV part 1 comprises at least two parallel MOV strings 3; each MOV string 3 comprises at least two series zinc oxide valve plates 5; the linear resistor part 2 comprises at least two parallel resistor strings 4; each resistor string 4 comprises at least two series ceramic resistor discs 6; linear resistors 7 are added onto the MOV strings 3 and are in series connection with the zinc oxide valve plates 5; the number of the series ceramic resistor discs 6 of the resistor strings 4 is reduced; and a resistance value of the damping resistor is unchanged. According to the MOV string resistance damping resistor for the extra-high voltage series compensation, the linear resistors are placed in the parallel MOV strings and are in series connection with the zinc oxide valve plates; when MOV heavy breakover current is in a low resistance state, the series linear resistors can allow the resistances of the MOV strings to be approximately the same, and current equalization of the MOV strings is realized.
Description
Technical field
The utility model relates to a kind of damped resistor, is specifically related to a kind of ultra high voltage series connection compensation MOV crosstalk resistance type damped resistor.
Background technology
It is the visual plant of series compensation device that string is mended with damping device, is used for amplitude and the frequency of limiting capacitance device group discharging current, reduces discharging current to the infringement in capacitor, by-pass switch and protection gap; And the capacitor set discharge electric current decayed fast, to reduce residual voltage to the line-breaker recovery voltage and to dive for effect of arc.Damping device is composed in parallel by damping reactor and damped resistor two parts, and damping reactor is used for limiting capacitance device group discharging current amplitude and frequency, and damped resistor is used for absorption capacitor group discharge energy.
Damped resistor is divided into gap crosstalk resistance type and MOV(Metal Oxide Varistor, metal oxide varistor) two kinds of crosstalk resistance types.Gap crosstalk resistance type damped resistor is become by connect linear resistor group of gap, and simple in structure, line current still flows through linear resistance but capacitor set discharge finishes the back, and linear resistance thermal capacity increases, and reliability reduces; And gap and linear resistance employing open type, affected by environment big, reliability is not high, needs often to safeguard.MOV crosstalk resistance type damped resistor is become by connect linear resistor group of MOV, and in the instantaneous input of capacitor set discharge process neutral line resistance with withdraw from, thermal capacity reduces, and reliability improves; MOV and linear resistance adopt closed, and not affected by environment, reliability improves greatly; Shortcoming is that MOV also will absorb energy, and reference voltage is low, thermal capacity is big, needs the multicolumn parallel connection, all bad solutions of flow problem; Linear resistance adopts the connection in series-parallel of single chip resistance sheet to form, and needs to adopt multi-core structures, core complexity.
The line short circuit current of extra-high voltage series compensation is big, and capacitor group voltage height, capacity are big, and reliability requirement height, damped resistor adopt MOV crosstalk resistance type more reasonable.There is following problem in the damped resistor of MOV crosstalk resistance type of the prior art:
1, the thermal capacity of the MOV of MOV crosstalk resistance type damped resistor part is very big, be formed in parallel by multicolumn, every post MOV is composed in series by several zinc oxide valve plates, because the height of zinc oxide valve plate voltage-current characteristic is non-linear, after the multicolumn MOV parallel connection, each intercolumniation CURRENT DISTRIBUTION can be very inhomogeneous, easily causes the valve block technical performance to descend even damage.
2, in parallel again behind every post MOV employing absolute construction of MOV crosstalk resistance type damped resistor, it is a lot of to cause volume and weight to increase, and makes troubles to damped resistor production and practicality.
3, damped resistor neutral line resistor disc and zinc oxide valve plate all are ceramic materials, and it is very smooth that contact surface is difficult to do, and has jog more, causes actual contact bad easily, and local overheating causes device failure.
The utility model content
The utility model relates to a kind of ultra high voltage series connection compensation MOV crosstalk resistance type damped resistor, described MOV crosstalk resistance type damped resistor comprises MOV part 1 and the linear resistance part 2 of mutual series connection, described MOV part 1 comprises the MOV string 3 of at least two post parallel connections, described MOV string 3 comprises the zinc oxide valve plate 5 of at least two series connection, described linear resistance part 2 comprises at least two parallel resistor strings 4, described resistance string 4 comprises the ceramic resistor sheet 6 of at least two series connection, increase linear resistance 7 on the described MOV string 3 and connect with described zinc oxide valve plate 5, the number that reduces the described ceramic resistor sheet 6 of described resistance string 4 series connection makes the resistance value of described damped resistor constant.
In first preferred embodiment that the utility model provides: described zinc oxide valve plate 5, ceramic resistor sheet 6 and linear resistance 7 are formed the core body of described MOV crosstalk resistance type damped resistor, described core body comprises core unit 8, and described core unit 8 comprises 3 and described resistance string 4 of described MOV string of vertically placing successively from top to bottom;
The quantity of the MOV string 3 of described vertical placement is at least two, upper end or lower end are linear resistance end or zinc oxide valve plate end, the described linear resistance end of any one described MOV string 3 is near the described linear resistance end of the described MOV string 3 that is adjacent, and described zinc oxide valve plate end is near the described zinc oxide valve plate end of the described MOV string 3 that is adjacent; The same end of any two adjacent described MOV strings 3 connects by short circuit sheet 9, and the described linear resistance end of all described MOV strings 3 is interconnected, and described zinc oxide valve plate end interconnects;
An end and described resistance string 4 that described at least two MOV string 3 interconnects the close described resistance string 4 in back are connected in series.
In second preferred embodiment that the utility model provides: be encapsulated in the insulating coating after 2-3 described core unit 8 parallel connections.
In the 3rd preferred embodiment that the utility model provides: the described ceramic resistor sheet 6 that the described MOV string 3 described linear resistances 7 that comprise and described resistance string 4 comprise is the linear resistance sheet, and described linear resistance sheet and described zinc oxide valve plate 5 are the pie ceramic component;
In the 4th preferred embodiment that the utility model provides: described MOV part 1 comprises the described MOV string 3 of 25 parallel connections, each MOV string 3 comprises described zinc oxide valve plate 5 and 2 described linear resistances 7 of 8 series connection, and described linear resistance part 2 comprises the described resistance string 4 of 5 parallel connections;
Described zinc oxide valve plate 5 is the QA22 of Toshiba zinc oxide valve plate, and described linear resistance 7 is 3 ohm.
A kind of ultra high voltage series connection compensation that the utility model provides comprises with the beneficial effect of MOV crosstalk resistance type damped resistor:
1, a kind of ultra high voltage series connection compensation that provides of the utility model is with MOV crosstalk resistance type damped resistor, the linear resistance of a part is put into each post MOV string in parallel, connect with zinc oxide valve plate, when the big current lead-through of MOV presents low resistance state, the linear resistance of series connection approaches the resistance between each post MOV string, realizes the current-sharing of each post MOV string.
2, the utility model provides a kind of core design of damped resistor, utilize the parallel-connection structure of short circuit sheet during the MOV part is electric to change structural cascaded structure into, be installed in series with linear resistance, dwindled the volume and weight of damped resistor greatly.
3, between interconnective resistor disc or valve block, place the copper mesh pad, copper mesh is placed between resistor disc or the valve block contact surface, make the surface contact good by the crimping distortion, and be conducive to heat radiation.
Description of drawings
Be illustrated in figure 1 as the electrical structure diagram of MOV crosstalk resistance type damped resistor in the prior art;
A kind of ultra high voltage series connection compensation that being illustrated in figure 2 as the utility model provides electrical structure diagram of the embodiment of MOV crosstalk resistance type damped resistor;
Be illustrated in figure 3 as in the prior art current-sharing design sketch of simulated measurement under the two post MOV connection in series-parallel situations;
A kind of ultra high voltage series connection that being illustrated in figure 4 as the utility model provides compensates the current-sharing design sketch with simulated measurement under the two post MOV connection in series-parallel situations among the embodiment of MOV crosstalk resistance type damped resistor;
Be illustrated in figure 5 as the MOV string of absolute construction in the prior art and the connection diagram of resistance string;
Be illustrated in figure 6 as the structural representation of the core unit of a kind of MOV crosstalk resistance type damped resistor that the utility model provides;
Be illustrated in figure 7 as the interconnective structural representation of a plurality of core unit that the utility model provides;
Be illustrated in figure 8 as the schematic diagram that the copper mesh pad is set between any two adjacent linear resistance sheets that the utility model provides or the zinc oxide valve plate;
Be illustrated in figure 9 as string in the ultra high voltage center line extension project that the utility model provides and mend structural representation with MOV crosstalk resistance type damped resistor;
Among the figure: 1 is the MOV part; 2 is the linear resistance part; 3 are the MOV string; 4 is resistance string; 5 is zinc oxide valve plate; 6 is the ceramic resistor sheet; 7 is linear resistance; 8 is core unit; 9 is the short circuit sheet; 10 is the copper mesh pad.
Embodiment
MOV crosstalk resistance type damped resistor comprises MOV part 1 and the linear resistance part 2 of mutual series connection, MOV part 1 comprises the MOV string 3 of at least two post parallel connections, MOV string 3 comprises the zinc oxide valve plate 5 of at least two series connection, linear resistance part 2 comprises at least two parallel resistor strings 4, resistance string 4 comprises the ceramic resistor sheet 6 of at least two series connection, the utility model provides a kind of ultra high voltage series connection compensation MOV crosstalk resistance type damped resistor, from every columnar resistance string 4 of linear resistance part 2, extract a part of ceramic resistor sheet 6 out, give every post MOV string 3 series connection linear resistances 7 of MOV part 1, make MOV string comprise zinc oxide valve plate 5 and the linear resistance 7 of series connection, and the resistance that guarantees MOV part 1 and 2 series connection of linear resistance part extracts a part of ceramic resistor sheets 6 out with resistance string 4 and MOV string 3 series connection linear resistances 7 resistance before is identical.
Be the technical parameter table of ultra high voltage series connection compensation with MOV crosstalk resistance type damped resistor as shown in Table 1:
Table one: the ultra high voltage series connection compensation technical parameter table of MOV crosstalk resistance type damped resistor
Carrying out Preliminary design according to the technical parameter in the table one draws, MOV partly needs the MOV string of 25 post parallel connections, each MOV string is the zinc oxide valve plate of 8 series connection, and linear resistance partly needs 5 parallel resistor strings, and each resistance string is the ceramic resistor sheet of 50 series connection.
Be illustrated in figure 1 as the electrical structure diagram of MOV crosstalk resistance type damped resistor in the prior art, as shown in Figure 1, MOV crosstalk resistance type damped resistor comprises MOV part 1 and the linear resistance part 2 of series connection, MOV part 1 comprises the MOV string 3 of 25 parallel connections, each MOV string 3 comprises the QA22 of the Toshiba zinc oxide valve plate 5 of 8 series connection, and linear resistance part 2 comprises 5 parallel resistor strings 4.
The electrical structure diagram of the embodiment of a kind of ultra high voltage series connection compensation usefulness MOV crosstalk resistance type damped resistor that the utility model provides as shown in Figure 2, as shown in Figure 2, each MOV string comprises 8 zinc oxide valve plates 5 and 2 linear resistances 7 of series connection, concrete, this zinc oxide valve plate 5 is the QA22 of Toshiba zinc oxide valve plate, and linear resistance 7 is 3 ohm.From linear resistance part 2, extract a part of ceramic resistor sheet 6 out and give every post MOV string 3, every post MOV string 3 is connected with linear resistance 7, when the big current lead-through of MOV presents low configuration, the linear resistance 7 of series connection is flows resistance, make that resistance approaches between each MOV in parallel string 3, realize current-sharing between each post MOV string 3.
Because the height of zinc oxide valve plate voltage-current characteristic is non-linear, during 3 parallel connections of multicolumn MOV string, the little deviation of intercolumniation voltage-current characteristic can cause the extremely inhomogeneous of intercolumniation CURRENT DISTRIBUTION, have a strong impact on MOV technical performance and reliability, be illustrated in figure 3 as two post MOV in the prior art and go here and there the current-sharing design sketch of simulated measurement under 3 situations in parallel, as shown in Figure 3, the voltage-current characteristic of two post MOV string 3 differed 1.5% o'clock, and current deviation can be up to 28.6%.
A kind of ultra high voltage series connection that being illustrated in figure 4 as the utility model provides compensates the current-sharing design sketch with simulated measurement under the two post MOV connection in series-parallel situations among the embodiment of MOV crosstalk resistance type damped resistor, as shown in Figure 4, the embodiment of the MOV crosstalk resistance type damped resistor that the utility model provides, MOV string 3 is with after linear resistance 7 is connected, linear resistance plays the effect of current-sharing, the voltage-current characteristic of two post MOV string 3 differed 1.5% o'clock, current deviation has well solved the series-parallel equal flow problem of multicolumn MOV about 3%.
Further, select 15 post MOV to go here and there 3 parallel connections and carry out current-sharing test, 15 post MOV string 3 is divided into 3 groups, every group is that 5 post MOV go here and there 3 parallel connections.Earlier apply an impulse current to every group respectively, measure the electric current by every post MOV string 3, calculate maximum current skewness coefficient in each group.Then with above 3 groups of parallel connections, it is applied an impulse current, measure the electric current by every group, calculate maximum current skewness coefficient between each group, the group in and the group between CURRENT DISTRIBUTION nonuniformity coefficient sum be 3.3%, show that a kind of ultra high voltage series connection compensation that the utility model provides is with the current-sharing structural design of MOV string series connection linear resistance among the embodiment of MOV crosstalk resistance type damped resistor, the equal flow problem when well having solved multicolumn MOV connection in series-parallel.
Every post MOV string of the prior art adopts absolute construction, be illustrated in figure 5 as the MOV string of absolute construction in the prior art and the connection diagram of resistance string, every post MOV string 3 and resistance string 4 all adopt absolute construction, form MOV partial core body and linear resistance partial core body after the parallel connection respectively, MOV partial core body and linear resistance partial core body are combined to form the damped resistor core body, then the core body number is too much, encapsulation increases with the insulating coating number, causes damped resistor complex structure, size increase, weight to increase.
Preferably, the utility model provides a kind of MOV crosstalk resistance type damped resistor core unit 8, MOV string 3 comprises linear resistance 7 and the zinc oxide valve plate 5 of series connection, it is the linear resistance end that this MOV goes here and there 3 one ends, the other end is the zinc oxide valve plate end, multicolumn MOV string 3 is vertically placed from top to bottom successively, on each MOV string 3, the lower end is linear resistance end or zinc oxide valve plate end, the linear resistance end of any one MOV string 3 is near the linear resistance end of the MOV string 3 that is adjacent, the zinc oxide valve plate end is near the zinc oxide valve plate end of the MOV string 3 that is adjacent, the same end that connects any two adjacent MOV strings 3 again by short circuit sheet 9 successively respectively, the linear resistance end of all MOV strings 3 is interconnected, the zinc oxide valve plate end interconnects, its structural representation as shown in Figure 6, utilize short circuit sheet 9 that multicolumn MOV string 3 is become series connection on the mounting structure by the parallel connection on the electrical structure, and then connect with a resistance string 4 of linear resistance part 2, a core body forming damped resistor, core is simplified, and size reduces.
Be illustrated in figure 7 as the structural representation of a plurality of core unit that the utility model provides, be encapsulated in the insulating coating after 2-3 core unit 8 parallel connections, damped resistor core unit number and composite sheath number have been significantly reduced thus, the damped resistor size reduces greatly, weight alleviates greatly, has made things convenient for to install and use.Be example with the extra-high voltage series compensation damped resistor, adopt the core unit that the utility model provides after quantity reduce to 10, composite sheath quantity is reduced to 4.
A kind of MOV crosstalk resistance type damped resistor that the utility model provides comprises MOV string 3 and resistance string 4, the ceramic resistor sheet 6 that MOV string 3 linear resistances that comprise 7 and resistance string 4 comprise is the linear resistance sheet, linear resistance sheet and zinc oxide valve plate 5 are the pie ceramic component, and the ceramic material contact surface has jog, and compress variation seldom, so cause the contact of resistor disc or valve block insufficient, cause local through-flow easily, the internal current skewness, the damped resistor technical performance is descended, even cause resistor disc or valve block to damage.
The utility model provides in a kind of preferred embodiment of MOV crosstalk resistance type damped resistor, at any two interconnective linear resistance sheets and linear resistance sheet, copper mesh pad 10 is set in the middle of the contact-making surface of linear resistance sheet and zinc oxide valve plate 5 or zinc oxide valve plate 5 and zinc oxide valve plate 5, be illustrated in figure 8 as the schematic diagram that the copper mesh pad is set between any two adjacent linear resistance sheets that the utility model provides or the zinc oxide valve plate 5, copper mesh is good conductor of electricity and heat carrier, be easy to make and use, can produce deformation when compressing and make up and down that contact-making surface fully contacts, good heat transfer.
Be illustrated in figure 9 as string in the ultra high voltage center line extension project that the utility model provides and mend structural representation with MOV crosstalk resistance type damped resistor.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (5)
1. a ultra high voltage series connection compensates with MOV crosstalk resistance type damped resistor, described MOV crosstalk resistance type damped resistor comprises MOV part (1) and the linear resistance part (2) of mutual series connection, described MOV part (1) comprises the MOV string (3) of at least two post parallel connections, described MOV string (3) comprises the zinc oxide valve plate (5) of at least two series connection, described linear resistance part (2) comprises at least two parallel resistor strings (4), described resistance string (4) comprises the ceramic resistor sheet (6) of at least two series connection, it is characterized in that, described MOV string (3) is gone up increase linear resistance (7) and is connected with described zinc oxide valve plate (5), and the number that reduces the described ceramic resistor sheet (6) of described resistance string (4) series connection makes the resistance value of described damped resistor constant.
2. MOV crosstalk resistance type damped resistor as claimed in claim 1, it is characterized in that, described zinc oxide valve plate (5), ceramic resistor sheet (6) and linear resistance (7) are formed the core body of described MOV crosstalk resistance type damped resistor, described core body comprises core unit (8), and described core unit (8) comprises at least two described MOV string (3) and a described resistance string (4) of vertically placing successively from top to bottom;
Upper end or the lower end of the MOV string (3) of described vertical placement are linear resistance end or zinc oxide valve plate end, the described linear resistance end of any one described MOV string (3) is near the described linear resistance end of the described MOV string (3) that is adjacent, and described zinc oxide valve plate end is near the described zinc oxide valve plate end of the described MOV string (3) that is adjacent; The same end of any two adjacent described MOV strings (3) connects by short circuit sheet (9), and the described linear resistance end of all described MOV strings (3) is interconnected, and described zinc oxide valve plate end interconnects;
An end and described resistance string (4) that described at least two MOV string (3) interconnects the close described resistance string (4) in back are connected in series.
3. MOV crosstalk resistance type damped resistor as claimed in claim 2 is characterized in that, is encapsulated in the insulating coating after 2-3 described core unit (8) parallel connection.
4. MOV crosstalk resistance type damped resistor as claimed in claim 1, it is characterized in that, the described ceramic resistor sheet (6) that the described linear resistance (7) that described MOV string (3) comprises and described resistance string (4) comprise is the linear resistance sheet, and described linear resistance sheet and described zinc oxide valve plate (5) are the pie ceramic component;
Copper mesh pad (10) is set in the middle of the contact-making surface of any two interconnective described linear resistance sheets and described linear resistance sheet, described linear resistance sheet and described zinc oxide valve plate (5) or described zinc oxide valve plate (5) and described zinc oxide valve plate (5).
5. MOV crosstalk resistance type damped resistor as claimed in claim 1, it is characterized in that, described MOV part (1) comprises the described MOV string (3) of 25 parallel connections, each MOV string (3) comprises described zinc oxide valve plate (5) and 2 described linear resistances (7) of 8 series connection, and described linear resistance part (2) comprises the described resistance string (4) of 5 parallel connections;
Described zinc oxide valve plate (5) is the QA22 of Toshiba zinc oxide valve plate, and described linear resistance (7) is 3 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602176 CN203038738U (en) | 2012-11-14 | 2012-11-14 | MOV string resistance damping resistor for extra-high voltage series compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602176 CN203038738U (en) | 2012-11-14 | 2012-11-14 | MOV string resistance damping resistor for extra-high voltage series compensation |
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| Publication Number | Publication Date |
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| CN203038738U true CN203038738U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220602176 Expired - Lifetime CN203038738U (en) | 2012-11-14 | 2012-11-14 | MOV string resistance damping resistor for extra-high voltage series compensation |
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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 |
| CN105375493A (en) * | 2015-11-24 | 2016-03-02 | 中国电力科学研究院 | Rated parameter adjustable series compensation design method |
| CN109490607A (en) * | 2018-10-23 | 2019-03-19 | 中国南方电网有限责任公司超高压输电公司百色局 | Super UHV transmission line series compensation device MOV parallel shunt homogeneity testing method |
-
2012
- 2012-11-14 CN CN 201220602176 patent/CN203038738U/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 |
| CN105375493A (en) * | 2015-11-24 | 2016-03-02 | 中国电力科学研究院 | Rated parameter adjustable series compensation design method |
| CN105375493B (en) * | 2015-11-24 | 2019-02-22 | 中国电力科学研究院 | A kind of adjustable string benefit design method of nominal parameter |
| CN109490607A (en) * | 2018-10-23 | 2019-03-19 | 中国南方电网有限责任公司超高压输电公司百色局 | Super UHV transmission line series compensation device MOV parallel shunt homogeneity testing method |
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Granted publication date: 20130703 Effective date of abandoning: 20151104 |
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