CN204668945U - Extra-high voltage series complement system - Google Patents
Extra-high voltage series complement system Download PDFInfo
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- CN204668945U CN204668945U CN201520349215.4U CN201520349215U CN204668945U CN 204668945 U CN204668945 U CN 204668945U CN 201520349215 U CN201520349215 U CN 201520349215U CN 204668945 U CN204668945 U CN 204668945U
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- phase line
- isolating switch
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- bar type
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Abstract
Extra-high voltage series complement system, it by with each phase line of transmission line one to one three extra-high voltage series compensation devices form, extra-high voltage series compensation device primarily of series compensation platform, first series connection isolating switch, second series connection isolating switch, bypass isolating switch, voltage transformer, lightning arrester and by-pass switch composition; Series compensation platform is made up of series capacitor bank, voltage limiter, gap, damping device, bypass isolating switch, series connection isolating switch and Control protection equipment thereof and bypass breaker are arranged outward at series compensation platform, and series compensation platform has opposed first end and the second end, first end has first interface and the second interface, second end has the 3rd interface and the 4th interface for being connected bypass isolating switch, series connection isolating switch, to form complete serial supplementary line; Extra-high voltage series compensation device adopts single series compensation platform, is the outer layout pattern of line, by ground interlaced arrangement, is arranged near gate framework by the downlead in the middle part of the second phase line in transmission line phase line originally cross-line.
Description
Technical field
The utility model relates to a kind of extra-high voltage series complement system; Belong to project of transmitting and converting electricity design field.
Background technology
For long distance transmission line, its ability to transmit electricity depends primarily on the stability limit of circuit, adopts string benefit that the system stability limit can be made to increase substantially, improves the ability to transmit electricity of circuit.
Serial connection capacitor compensating device is made up of main elements such as series capacitor bank, voltage limiter, gap, damping device, bypass breaker, bypass isolating switch, series connection isolating switch and Control protection equipment thereof usually; the equipment manufacturing cost of device is mended in order to reduce string; reduce floor space; need the said equipment string being mended device install and operate on the series compensation platform of custom-designed insulation against ground, mend the carrier of main device installation and operation as string.
Current enforcement or in the extra-high voltage project of building, the string arranged outward for series compensation platform line mends device, and the tapping form of string benefit equipment and circuit affects the key factor of going here and there and mending apparatus arrangement.The circuit tapping form that string mends engineering can be divided into two kinds, and one connects for adopting gate framework to draw, and another kind of mode adopts single-phase steel tower to draw to connect.
The ultra-high voltage transformer station list platform string being illustrated in figure 1 prior art mends the floor plan of conventional arrangement, the ultra-high voltage transformer station string that Fig. 2 is prior art mends the partial top view of each phase line (distinguishing with the first phase line, the second phase line, third phase line) the institute consecutive benefit device of conventional arrangement, Fig. 3 is the drawing in side sectional elevation of the ultra-high voltage transformer station string benefit conventional arrangement of prior art, and Fig. 4 is the sectional arrangement drawing of the ultra-high voltage transformer station string benefit conventional arrangement of prior art.Shown in figure, string mends device 1 primarily of compositions such as the series connection of series compensation platform 2, first series connection isolating switch 3, second isolating switch 4, bypass isolating switch 5, voltage transformer 6, lightning arrester 7 and by-pass switches 8.Although this employing gate framework draws the string that connects and mends Plant arrangement pattern to draw run-down lines impact less, but the second phase line needs to go between in the middle part of cross-line, namely the downlead of the first phase line and third phase line is all under framework, and the downlead of the second phase line is positioned at the middle part of circuit between the gate framework of both sides, larger in span, under the strong wind operating mode of wind speed larger area, the downlead of the second phase line can produce very large pulling force to its fastening terminal, and wave comparatively violent, so that become the potential safety hazard that post insulator etc. supports kind equipment, therefore this string benefit arrangement needs further optimization badly.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of improvement is provided, the extra-high voltage series complement system that effectively can solve downlead windage yaw and overtension problem in the middle part of cross-line.
The utility model has come by following technical solution, a kind of extra-high voltage series complement system, described extra-high voltage series complement system by with each phase line of transmission line one to one three extra-high voltage series compensation devices form, described extra-high voltage series compensation device primarily of series compensation platform, first series connection isolating switch, second series connection isolating switch, bypass isolating switch, voltage transformer, lightning arrester and by-pass switch composition; Described series compensation platform is made up of series capacitor bank, voltage limiter, gap, damping device, described bypass isolating switch, series connection isolating switch and Control protection equipment thereof and bypass breaker are arranged outward at series compensation platform, and series compensation platform has opposed first end and the second end, first end has first interface and the second interface, second end has the 3rd interface and the 4th interface for being connected described bypass isolating switch, these ancillary equipment of series connection isolating switch, to form complete serial supplementary line; Described extra-high voltage series compensation device adopts single series compensation platform, is the outer layout pattern of line, utilizes two row's gate frameworks to draw and connect, and by ground interlaced arrangement, is arranged near gate framework by the downlead in the middle part of the second phase line in transmission line phase line originally cross-line.
Series compensation platform inner member equipment reverse configuration compared with the first phase line, third phase line of the second phase line described in the utility model, the series compensation platform interface connected mode of the second phase line and the first phase line, third phase line are contrary;
The serial supplementary line of described second phase line, by increasing outdoor bar type post insulator stay pipe bus, to utilize between two row's gate frameworks space cabling under third phase line cross-line.
Second phase line described in the utility model through the series compensation platform first interface of reversed arrangement to connect with first isolating switch first end between an outdoor bar type post insulator is set, be connected to the first end of the first series connection isolating switch after the wire that the first interface of series compensation platform is drawn is supported by this outdoor bar type post insulator; The wire of the second end extraction of the first tandem tap connects the first end of bypass isolating switch, an outdoor bar type post insulator be positioned at below transmission line second phase line is connected to again after being supported by an outdoor bar type post insulator after described wire connects bypass isolating switch, rotary angle of 90 DEG, supported by an outdoor bar type post insulator again, utilize downlead to be connected in the phase line of corresponding transmission line.
Second phase line described in the utility model through series compensation platform second interface of reversed arrangement to connect with second isolating switch first end between an outdoor bar type post insulator is set, be connected to the first end of the second series connection isolating switch after the wire that the second interface of series compensation platform is drawn is supported by this outdoor bar type post insulator; The wire of the second end extraction of the second tandem tap connects the second end of bypass isolating switch, an outdoor bar type post insulator be positioned at below transmission line third phase line is connected to again after being supported by two outdoor bar type post insulators after connecting bypass isolating switch, rotary angle of 90 DEG, connect lightning arrester, and drawn by wire clamp and receive on described wire; After described wire connects lightning arrester, after being supported by two outdoor bar type post insulators, be connected to voltage transformer, and drawn by wire clamp and receive on described wire; After described wire connects voltage transformer, the outdoor bar type post insulator be positioned at below transmission line third phase line by one is again supported, rotary angle of 90 DEG afterwards, at transmission line second phase line correspondence position, an outdoor bar type post insulator is set, rotary angle of 90 DEG again, after being positioned at by two two the outdoor bar type post insulators supports arranged below transmission line second phase line again, be connected to the phase line of corresponding transmission line;
3rd interface and the 4th interface of series compensation platform draw the two ends being connected by-pass switch after wire supports respectively by two outdoor bar type post insulators.
The beneficial effects of the utility model are:
When adopting prior art, second phase line needs to go between in the middle part of cross-line, wire locations to be positioned between framework in the middle part of cross-line, distant apart from both sides framework, the downlead windage yaw of transformer station's second phase line under strong wind operating mode of wind speed larger area and warp tension ratio be positioned at the first phase line under framework, third phase line downlead much larger, coupled outdoor bar type post insulators etc. support that kind equipment terminal may be drawn bad, there is potential safety hazard.
And the utility model is not when increasing extra-high voltage series compensation plant area area, not changing circuit tapping form, space under third phase line cross-line is utilized to arrange outdoor bar type post insulator needed for the second phase line serial supplementary line and wire, by ground interlaced arrangement, by the downlead position of the second phase line circuit from reconfiguration in the middle part of cross-line of the prior art to framework, effectively can avoid the problem of the downlead overtension under strong wind operating mode, greatly eliminate downlead fastening under large span, strong wind operating mode stressed excessive, wave violent potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the floor plan of the ultra-high voltage transformer station string benefit conventional arrangement of prior art.
Fig. 2 is the partial top view of each phase line institute consecutive benefit device of the ultra-high voltage transformer station string benefit conventional arrangement of prior art.
Fig. 3 is the drawing in side sectional elevation of the ultra-high voltage transformer station string benefit conventional arrangement of prior art.
Fig. 4 is the sectional arrangement drawing of the ultra-high voltage transformer station string benefit conventional arrangement of prior art.
Fig. 5 is the floor plan of extra-high voltage series complement system described in the utility model.
Fig. 6 is the partial top view of each phase line institute consecutive benefit device of extra-high voltage series complement system described in the utility model.
Fig. 7 is the drawing in side sectional elevation of extra-high voltage series complement system described in the utility model.
Fig. 8 is the sectional arrangement drawing of extra-high voltage series complement system described in the utility model.
In figure, the label of each parts is: 1, string mends device, the 2, series compensation platform, 3, first series connection isolating switch, the 4, second series connection isolating switch, 5, bypass isolating switch, 6, voltage transformer, 7, lightning arrester, 8, by-pass switch, 9, outdoor bar type post insulator.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.Shown in Fig. 5-8, a kind of extra-high voltage series complement system described in the utility model, it by with each phase line of transmission line one to one three extra-high voltage series compensation devices 1 form, described extra-high voltage series compensation device 1 primarily of series compensation platform 2, first connect isolating switch 3, second connect isolating switch 4, bypass isolating switch 5, voltage transformer 6, lightning arrester 7 and by-pass switch 8 form, described series compensation platform 2 is by series capacitor bank, voltage limiter, gap, damping device forms, described bypass isolating switch, series connection isolating switch and Control protection equipment and bypass breaker are arranged outward at series compensation platform, and series compensation platform has opposed first end and the second end, first end has first interface and the second interface, second end has the 3rd interface and the 4th interface for being connected described bypass isolating switch, these ancillary equipment of series connection isolating switch, to form complete serial supplementary line, it is characterized in that described extra-high voltage series compensation device 1 adopts single series compensation platform 2, for the outer layout pattern of line, utilize two row's gate frameworks to draw to connect, by ground interlaced arrangement, downlead in the middle part of the second phase line in transmission line phase line originally cross-line is arranged near gate framework.
Shown in Fig. 5, series compensation platform 2 inner member equipment reverse configuration compared with the first phase line, third phase line of the second phase line described in the utility model, the series compensation platform 2 interface connected mode of the second phase line and the first phase line, third phase line are contrary;
The serial supplementary line of described second phase line, by increasing outdoor bar type post insulator 9 stay pipe bus, to utilize between two row's gate frameworks space cabling under third phase line cross-line.
Second phase line described in the utility model through series compensation platform 2 first interface of reversed arrangement to connect with first isolating switch 3 first end between an outdoor bar type post insulator 9 is set, be connected to the first end of the first series connection isolating switch 3 after the wire that the first interface of series compensation platform 2 is drawn is supported by this outdoor bar type post insulator 9; The wire of the second end extraction of the first tandem tap 3 connects the first end of bypass isolating switch 5, an outdoor bar type post insulator 9 be positioned at below transmission line second phase line is connected to again after being supported by an outdoor bar type post insulator 9 after described wire connects bypass isolating switch 5, rotary angle of 90 DEG, supported by an outdoor bar type post insulator 9 again, utilize downlead to be connected in the phase line of corresponding transmission line.
Second phase line described in the utility model through series compensation platform 2 second interface of reversed arrangement to connect with second isolating switch 4 first end between an outdoor bar type post insulator 9 is set, be connected to the first end of the second series connection isolating switch 4 after the wire that the second interface of series compensation platform 2 is drawn is supported by this outdoor bar type post insulator 9; The wire of the second end extraction of the second tandem tap 4 connects the second end of bypass isolating switch 5, an outdoor bar type post insulator 9 be positioned at below transmission line third phase line is connected to again after being supported by two outdoor bar type post insulators 9 after connecting bypass isolating switch 5, rotary angle of 90 DEG, connect lightning arrester 7, and drawn by wire clamp and receive on described wire; After described wire connects lightning arrester 7, after being supported by two outdoor bar type post insulators 9, be connected to voltage transformer 6, and drawn by wire clamp and receive on described wire; After described wire connects voltage transformer 6, the outdoor bar type post insulator 9 be positioned at below transmission line third phase line by one is again supported, rotary angle of 90 DEG afterwards, at transmission line second phase line correspondence position, an outdoor bar type post insulator 9 is set, rotary angle of 90 DEG again, after being positioned at by two two outdoor bar type post insulators 9 supports arranged below transmission line second phase line again, be connected to the phase line of corresponding transmission line;
3rd interface of series compensation platform 2 and the 4th interface draw wire supports rear connection by-pass switch 8 two ends respectively by two outdoor bar type post insulators 9.
Embodiment:
Fig. 5, shown in 6, with Fig. 1, in 2, the extra-high voltage series complement system of prior art is compared, the series compensation platform 2 of the second phase line of extra-high voltage series complement system described in the utility model compares inner member equipment reverse configuration with the first phase line with third phase line, the series compensation platform 2 interface connected mode of the second phase line and the first phase line, third phase line is contrary, the effect caused is the utility model Fig. 5, when the series compensation platform of the second phase line described in 6 puts into operation, electric current is flowed into by two interfaces of described series compensation platform first end, with prior art Fig. 1 on outflow direction, two interfaces of the series compensation platform first end of the second phase line in 2 flow into, outflow direction is contrary.
Because of the present utility model being characterised in that is improved the arrangement of the string benefit device of the second phase line be positioned in the middle of transmission line emphatically, device is mended for other the two phase lines i.e. string of the first phase line and third phase line, its setting principle and method and prior art similar, give a kind of possible implementation as shown in Figure 5,6, so place only makes brief of the introduction.
The string connected for the first phase line mends device, and as shown in Figure 6, the first interface of series compensation platform 2 wire of drawing supports rear connection first by an outdoor bar type post insulator 9 and to connect the first end of isolating switch 3; The wire of the second end extraction of the first series connection isolating switch 3 connects the first end of bypass isolating switch 5; Wire utilizes circuit downlead to be connected with transmission line after being supported by an outdoor bar type post insulator 9 afterwards; Second interface of series compensation platform 2 wire of drawing supports rear connection second by an outdoor bar type post insulator 9 and to connect the first end of isolating switch 4; The wire of the second end extraction of the second series connection isolating switch 4 connects the second end of bypass isolating switch 5; Wire is supported by an outdoor bar type post insulator 9 afterwards, and rotary angle of 90 DEG, is connected with lightning arrester 7, is supported between the outdoor bar type post insulator 9 of angle position and lightning arrester 7 by an outdoor bar type post insulator 9; After being connected voltage transformer 6 again with the connected wire of lightning arrester 7, be connected with the phase line of transmission line.3rd interface of series compensation platform 2 and the 4th interface draw wire supports rear connection by-pass switch 8 two ends respectively by two outdoor bar type post insulators 9.
The string connected for third phase line mends device, and as shown in Figure 6, the first interface of series compensation platform 2 wire of drawing supports rear connection first by an outdoor bar type post insulator 9 and to connect the first end of isolating switch 3; The wire of the second end extraction of the first series connection isolating switch 3 connects the first end of bypass isolating switch 5; Wire is supported by three outdoor bar type post insulators 9 afterwards, rotary angle of 90 DEG, then is connected with the phase line of transmission line after being supported by two outdoor bar type post insulators 9.Second interface of series compensation platform 2 wire of drawing supports rear connection second by an outdoor bar type post insulator 9 and to connect the first end of isolating switch 4; The wire of the second end extraction of the second series connection isolating switch 4 connects the second end of bypass isolating switch 5; Lightning arrester 7 and voltage transformer 6 is connected respectively after being supported by an outdoor bar type post insulator 9 again after connecting the second end of bypass isolating switch 5, wherein first support through an outdoor bar type post insulator 9 after second end of wire via bypass isolating switch 5 and be connected to lightning arrester 7, the outdoor bar type post insulator 9 of a support wire is also set between voltage transformer 6 and lightning arrester 7; Wire is connected with the phase line of transmission line by circuit downlead for the outdoor bar type post insulator 9 supported through one after voltage transformer 6 is drawn.3rd interface of series compensation platform 2 and the 4th interface draw wire supports rear connection by-pass switch 8 two ends respectively by two outdoor bar type post insulators 9.
Connection Element equipment described above wire used can adopt conductors on quad bundled or pipe bus to connect according to different elements equipment, wherein, the wire that series compensation platform first interface, the second interface, the 3rd interface, the 4th interface are drawn is conductors on quad bundled, the conductors on quad bundled that each interface is drawn introduces coupled, for supporting first outdoor bar type post insulator period of the day from 11 p.m. to 1 a.m, this outdoor bar type post insulator can adopt pipe bus to be connected with conductors on quad bundled, i.e. the wire of this first outdoor bar type post insulator extraction is pipe bus.Two lines branch ends that series compensation platform first interface and the second interface are drawn are finally outdoor bar type post insulator (or voltage transformer), described wire until last outdoor bar type post insulator (or voltage transformer) place, is pipe bus from first outdoor bar type post insulator.Last outdoor bar type post insulator (or voltage transformer) place of each branch, be connected with pipe bus by conductors on quad bundled, namely the wire that last outdoor bar type post insulator (or voltage transformer) is drawn is conductors on quad bundled, and this conductors on quad bundled is connected as the phase line of the circuit downlead transmission line corresponding with it.
It is to be noted, above-mentioned setting position and the quantity that outdoor bar type post insulator is just exemplarily described, the utility model does not specifically limit the setting position of the setting position of outdoor bar type post insulator and magnitude setting and voltage transformer, lightning arrester.
Sectional arrangement drawing shown in Fig. 4 and the utility model Fig. 8 in contrast prior art, can find through technological improvement of the present utility model, the transmission line downlead position of the second phase line, by the position be arranged in the middle part of the cross-line in prior art under close gate framework, makes the downlead position of the second phase line consistent relative to gate framework with the downlead position of the first phase line and third phase line.
When adopting the extra-high voltage series complement system of prior art, second phase line needs to go between in the middle part of cross-line, wire locations to be positioned between framework in the middle part of cross-line, distant apart from both sides framework, the downlead windage yaw of transformer station's second phase line under strong wind operating mode of wind speed larger area and warp tension ratio be positioned at the first phase line under framework, third phase line downlead much larger, coupled outdoor bar type post insulators etc. support that kind equipment terminal may be drawn bad, there is potential safety hazard.And the utility model is not increasing extra-high voltage series compensation plant area area, when not changing circuit tapping form, space under third phase line cross-line is utilized to arrange the outdoor bar type post insulator needed for serial supplementary line and the wire of the second phase line, by ground interlaced arrangement, the downlead position of the second phase line circuit is arranged on framework in the middle part of cross-line of the prior art, effectively can avoid the problem of the downlead overtension under strong wind operating mode, greatly eliminate large span, under strong wind operating mode, downlead fastening is stressed excessive, wave violent potential safety hazard, there is outstanding beneficial effect.
Claims (4)
1. extra-high voltage series complement system, described extra-high voltage series complement system by with each phase line of transmission line one to one three extra-high voltage series compensation devices (1) form, described extra-high voltage series compensation device (1) primarily of series compensation platform (2), first series connection isolating switch (3), second series connection isolating switch (4), bypass isolating switch (5), voltage transformer (6), lightning arrester (7) and by-pass switch (8) composition, described series compensation platform (2) is by series capacitor bank, voltage limiter, gap, damping device forms, described bypass isolating switch, series connection isolating switch and Control protection equipment and bypass breaker are arranged outward at series compensation platform, and series compensation platform has opposed first end and the second end, first end has first interface and the second interface, second end has the 3rd interface and the 4th interface for being connected described bypass isolating switch, these ancillary equipment of series connection isolating switch, to form complete serial supplementary line, it is characterized in that described extra-high voltage series compensation device (1) adopts single series compensation platform (2), for the outer layout pattern of line, utilize two row's gate frameworks to draw to connect, by ground interlaced arrangement, downlead in the middle part of the second phase line in transmission line phase line originally cross-line is arranged near gate framework.
2. extra-high voltage series complement system according to claim 1, it is characterized in that series compensation platform (2) the inner member equipment of described second phase line reverse configuration compared with the first phase line, third phase line, series compensation platform (2) the interface connected mode of the second phase line and the first phase line, third phase line are contrary;
The serial supplementary line of described second phase line, by increasing outdoor bar type post insulator (9) stay pipe bus, to utilize between two row's gate frameworks space cabling under third phase line cross-line.
3. extra-high voltage series complement system according to claim 1 and 2, it is characterized in that series compensation platform (2) first interface of described second phase line through reversed arrangement connect with first isolating switch (3) first end between an outdoor bar type post insulator (9) is set, be connected to the first end of the first series connection isolating switch (3) after the wire that the first interface of series compensation platform (2) is drawn is supported by this outdoor bar type post insulator (9); The wire of the second end extraction of the first tandem tap (3) connects the first end of bypass isolating switch (5), described wire connects bypass isolating switch (5) afterwards by being connected to an outdoor bar type post insulator (9) be positioned at below transmission line second phase line again after outdoor bar type post insulator (9) support, rotary angle of 90 DEG, supported by an outdoor bar type post insulator (9) again, utilize downlead to be connected in the phase line of corresponding transmission line.
4. extra-high voltage series complement system according to claim 3, it is characterized in that series compensation platform (2) second interface of described second phase line through reversed arrangement connect with second isolating switch (4) first end between an outdoor bar type post insulator (9) is set, be connected to the first end of the second series connection isolating switch (4) after the wire that the second interface of series compensation platform (2) is drawn is supported by this outdoor bar type post insulator (9); The wire of the second end extraction of the second tandem tap (4) connects the second end of bypass isolating switch (5), connect after bypass isolating switch (5) is supported by two outdoor bar type post insulators (9) afterwards and be connected to an outdoor bar type post insulator (9) be positioned at below transmission line third phase line again, rotary angle of 90 DEG, connect lightning arrester (7), and drawn by wire clamp and receive on described wire; After described wire connects lightning arrester (7), after being supported by two outdoor bar type post insulators (9), be connected to voltage transformer (6), and drawn by wire clamp and receive on described wire; After described wire connects voltage transformer (6), the outdoor bar type post insulator (9) be positioned at below transmission line third phase line by one is again supported, rotary angle of 90 DEG afterwards, at transmission line second phase line correspondence position, an outdoor bar type post insulator (9) is set, rotary angle of 90 DEG again, after being positioned at by two two outdoor bar type post insulators (9) supports arranged below transmission line second phase line again, be connected to the phase line of corresponding transmission line;
3rd interface and the 4th interface of series compensation platform (2) draw the two ends being connected by-pass switch (8) after wire supports respectively by two outdoor bar type post insulators (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349215.4U CN204668945U (en) | 2015-05-27 | 2015-05-27 | Extra-high voltage series complement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349215.4U CN204668945U (en) | 2015-05-27 | 2015-05-27 | Extra-high voltage series complement system |
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| Publication Number | Publication Date |
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| CN204668945U true CN204668945U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520349215.4U Withdrawn - After Issue CN204668945U (en) | 2015-05-27 | 2015-05-27 | Extra-high voltage series complement system |
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| CN (1) | CN204668945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882881A (en) * | 2015-05-27 | 2015-09-02 | 中国能源建设集团浙江省电力设计院有限公司 | Extra-high voltage series compensation system |
-
2015
- 2015-05-27 CN CN201520349215.4U patent/CN204668945U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882881A (en) * | 2015-05-27 | 2015-09-02 | 中国能源建设集团浙江省电力设计院有限公司 | Extra-high voltage series compensation system |
| CN104882881B (en) * | 2015-05-27 | 2017-05-10 | 中国能源建设集团浙江省电力设计院有限公司 | Extra-high voltage series compensation system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150923 Effective date of abandoning: 20170510 |