CN102509593A - Support insulator of tubular conductor non-segregated bus - Google Patents
Support insulator of tubular conductor non-segregated bus Download PDFInfo
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- CN102509593A CN102509593A CN201110375123XA CN201110375123A CN102509593A CN 102509593 A CN102509593 A CN 102509593A CN 201110375123X A CN201110375123X A CN 201110375123XA CN 201110375123 A CN201110375123 A CN 201110375123A CN 102509593 A CN102509593 A CN 102509593A
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Abstract
The invention discloses a support insulator of a tubular conductor non-segregated bus. The tubular conductor non-segregated bus comprises a box body and three tubular conductors located in the box body; the support insulator consists of three conductor support units respectively mounted below all the tubular conductors and used for supporting the tubular conductors, a support frame body used for connecting the three conductor support units and a fixing support used for fixing the support frame body in the box body; and each conductor support unit comprises a semicircular conductor fixing groove clinging to each tubular conductor and a first umbrella shirt structure located below each semicircular conductor fixing groove. The support insulator of the tubular conductor non-segregated bus, which is provided by the invention, is connected with the tubular conductors and the box body to form a firm whole, so as to strengthen shock resistance to short circuit electromotive power of the bus; and besides, the umbrella skirt structures with insulation function are respectively arranged between phases of the bus, as well as the phases of the bus and the ground, thereby effectively improving the insulation level and the reliability in operation.
Description
Technical field
The present invention relates to the common box bus technical field, particularly a kind of supporting insulator of cast conductor common box bus.
Background technology
Enclosed busbar is a kind of big current transmission device that is widely used in power plant, electric substation, industry and civilian power supply.Comprise types such as isolated-phase enclosed bus, common box bus.
The case enclosed busbar is widely used between following generator lead-out wire of 100MW and the main transformer low-pressure side or the current delivery between station transformer low-pressure side and the high voltage distribution installation altogether.The case enclosed busbar also can be used for the power supply lead wire of generator alternating current-direct current energized circuit, electric substation's electricity consumption introducing bus or other industrial civilian installation altogether.
Case enclosed busbar conductor adopts the copper aluminium bus array altogether, groove aluminium groove copper, and the copper pipe aluminum pipe, compact conformation, easy for installation, the operation maintenance workload is little.Shell adopts aluminium sheet to process; Antiseptic property is good; And avoided the caused additional eddy current loss of steel shell, electric the going up of shell all is communicated with and multipoint earthing, stops personal Danger Electric shock risk and wire net need not be set; Simplified requirement, can heater and respirator etc. be installed with reinforced insulation in casing at cover heat-shrinkable T bush on the bus-bars conductor according to user's needs to civil engineering.
The epoxy plate supporting structure of aluminum pipe common box bus is present the most frequently used a kind of supporting structure.Its advantage is that density of material is less, and supporting structure weight is lighter.It is unified that epoxy plate in the supporting structure is cut out size, effectively prevents the difference owing to setting height(from bottom), or the variation of the error of spaced apart causes the inner moment of torsion that produces of installation process median generatrix conductor.But, find that this structure receives the restriction of its selected materials self character also to exist very important defective through long-term operation test.
Epoxy plate is prone to the moisture absorption, and epoxy plate very easily receives the influence of air humidity and significantly reduces insulation level under situation about having a humid climate.Especially in the coastal area, be mingled with a large amount of charged ions in the salt fog, along with the section of steam through epoxy plate is penetrated in the slit of fibre structure in the plate, thus the insulation level of reduction epoxy plate.In addition, steam is immersed in epoxy plate inside and causes expansion, and water evaporates causes panel shrinkage again after the air drying, shrinks the inhomogeneous cracking that often causes epoxy plate, has reduced the intensity of whole conductor supporting structure.In a single day the epoxy plate of cracking comes off, then cause short circuit alternate or relatively probably, and serious accident takes place.
In addition, because epoxy plate insulation receives the restriction of characteristics such as itself intensity and insulation level, this kind supporting structure insulation level can not satisfy the direct use of 6.3kV grade, and the mode that must be employed in bus-bars conductor surface parcel pyrocondensation insulating case improves insulation level.But isolating shrinkable cover is fragile, and spot failure easy-to-search not, repairs difficulty.If the isolating shrinkable after breakage cover perk meeting reduces alternate or insulation distance relatively, if more serious damaged excessive, directly fall to the bottom of bus casing, or snap into to face and cause short circuit on the phase conductor probably.Also reduced the reliability of bus when therefore in the process of using the isolating shrinkable cover, having improved the bus insulation level to a certain extent.
The present available another kind of supporting structure of aluminum pipe common box bus is single column support type insulator supporting structure.The potential safety hazard that this structure can avoid epoxy plate to cause, but installation process is comparatively complicated, and weight is heavier, and because alignment error, regular meeting causes bigger moment of torsion for bus-bars conductor inside, and is that therefore adopt at present and few.Simultaneously; If adopt the form of column support type insulator, under short-circuit conditions, insulator will receive huge short circuit current active force; And this active force very easily makes the insulator fracture; Usually the scheme that solves is to improve the overall mechanical properties of insulator supporting construction with the mode of the quantity that increases insulator, but has increased the possibility of relative ground circuit or discharge like this, has also increased cost simultaneously.
Summary of the invention
The invention provides a kind of supporting insulator that is used for cast conductor common box bus, can improve the insulation level and the reliability of operation of cast conductor common box bus.
The technical scheme that its technical problem of solution of the present invention is adopted is:
A kind of supporting insulator of cast conductor common box bus, said cast conductor common box bus comprise casing and be positioned at three cast conductors of casing,
Said supporting insulator comprises:
Be installed in each cast conductor below respectively, be used to support three conductor support units of cast conductor,, and said support frame is fixed in the fixed support in the said casing said three support frames that the conductor support unit links together;
Each conductor support unit comprises the semicircular conductor fixed groove of the said cast conductor of fitting and is positioned at first umbrella skirt construction of said semicircular conductor fixed groove below.
Preferably, each said conductor support unit comprises further and is used for said cast conductor is pressed together on the pressure ring in the said semicircular conductor fixed groove that said pressure ring is connected through securing member with said semicircular conductor fixed groove.
Preferably, the outer surface of said cast conductor further comprises the supporting bead of the said cast conductor of fitting,
The internal diameter of said supporting bead is identical with the external diameter of said cast conductor, and its external diameter is identical with the internal diameter of said semicircular conductor fixed groove.
Preferably, said securing member is processed by nonmagnetic steel.
Preferably, connect through second umbrella skirt construction between per two adjacent conductor support units,
The two ends of second umbrella skirt construction are connected with the semicircular conductor fixed groove of said two adjacent conductor support units respectively.
Preferably, said support frame comprises horizontal shore, and the vertical brace summer that vertically extends from the two ends of horizontal shore,
The bottom of first umbrella skirt construction of each conductor support unit all is fixedly connected with said horizontal shore,
Two conductor support units that are positioned at the outside in three conductor support units are fixedly connected with said vertical brace summer through one the 3rd umbrella skirt construction respectively.
Preferably, said two vertical brace summers are fixed in the casing through said fixed support.
Preferably, said conductor support unit is processed by insulating material.
Preferably, said insulating material is a sheet molding compound.
Preferably, said fixed support is processed by aluminium alloy.
Connect into firm integral body between supporting insulator that is used for cast conductor common box bus of the present invention and cast conductor, the casing, can firm support be provided, thereby promoted the ability that bus tolerance short-circuit electromotive force impacts the cast conductor that is positioned at casing.
The supporting insulator that is used for cast conductor common box bus of the present invention bus between phase and phase, and ground between all be provided with the umbrella skirt construction that insulation function is provided, improved the insulation level and the reliability of operation of cast conductor common box bus effectively.
The present invention adopts sheet molding compound (Sheet molding compound; SMC) as the insulating material of making the conductor support unit; Solve the shortcomings such as aging, perishable, that insulation is poor, cold resistance is poor, poor fire, life-span are lacked that are prone to of traditional material such as wooden, plastics, can improve the insulation level and the reliability of operation of cast conductor common box bus.
Description of drawings
Fig. 1 is the structural representation of the supporting insulator of cast conductor common box bus of the present invention;
Fig. 2 is the scheme of installation of the supporting insulator of cast conductor common box bus of the present invention.
Embodiment
The invention provides a kind of supporting insulator that is used for cast conductor common box bus, can improve the insulation level and the reliability of operation of cast conductor common box bus.
Fig. 1 is the structural representation of the supporting insulator of cast conductor common box bus of the present invention, and Fig. 2 is the scheme of installation of the supporting insulator of cast conductor common box bus of the present invention.As depicted in figs. 1 and 2, cast conductor common box bus comprises casing 101 and is positioned at three cast conductors 102 of casing 101.The supporting insulator of cast conductor common box bus of the present invention is installed in the casing 101, be used to cast conductor 102 provide support power and to three-phase cast conductor 102 between phase and phase, and ground between provide insulation to ensure.
As depicted in figs. 1 and 2; Supporting insulator comprises: be installed in each cast conductor 102 below respectively, be used to support three conductor support units 201 of cast conductor 102; The support frame 202 that three conductor support units 201 are linked together, and support frame 202 is fixed in the fixed support 203 in the casing 101.
Wherein, each conductor support unit 201 comprises the semicircular conductor fixed groove 211 of applying cast conductor 102 and is positioned at first umbrella skirt construction 212 of semicircular conductor fixed groove 211 belows.
Preferably, as shown in Figure 2, each conductor support unit 201 further comprises and is used for cast conductor 102 is pressed together on the pressure ring 213 in the semicircular conductor fixed groove 211, and pressure ring 213 and semicircular conductor fixed groove 211 are connected through securing member.Preferably, securing member is processed by nonmagnetic steel.
Three groups of conductor fixed pressure rings 213 are fixed on the conductor support unit 201 through securing member, are used for fixing cast conductor 102, prevent that cast conductor 102 from moving or shake in that bus is in service.
Preferably; As shown in Figure 1, the outer surface of cast conductor 102 can further comprise the supporting bead 214 of applying cast conductor 102, wherein; The internal diameter of supporting bead 214 is identical with the external diameter of cast conductor 102, and its external diameter is identical with the internal diameter of semicircular conductor fixed groove 211.
The internal diameter that being used to of conductor support unit 201 supported the semicircular conductor fixed groove 211 of cast conductor 102 is a fixed value; And after the cast conductor outer surface of the supporting structure installation place of conductor support unit 201 increases conductor supporting bead structure 214; The sheet metal thickness that is used to make conductor supporting bead 214 through adjustment can solve the problem that cast conductor 102 matches with conductor support unit 201; Reduce the kind of conductor support unit 201, strengthened the versatility of part.
Preferably, as shown in Figure 1, connect through second umbrella skirt construction 215 between per two adjacent conductor support units 201, the two ends of second umbrella skirt construction 215 are connected with the semicircular conductor fixed groove 211 of two adjacent conductor support units 201 respectively.
Preferably, support frame 202 comprises horizontal shore 221, and the vertical brace summer 222 that vertically extends from the two ends of horizontal shore 221.The bottom of first umbrella skirt construction 212 of each conductor support unit 201 all is fixedly connected with horizontal shore 221, and two the conductor support unit 201a that are positioned at the outside in three conductor support units 201,201c are fixedly connected with vertical brace summer 222 through one the 3rd umbrella skirt construction 216 respectively.
Visible by above description; Supporting insulator of the present invention is in the alternate position of cast conductor 102; All added the umbrella skirt construction of similar insulator structure between limit and the ground; Link to each other through support between many group umbrella skirt constructions, suffered bending resistance load has changed into the resistance to compression load to umbrella skirt construction between reaching relatively between phase and phase with umbrella skirt construction when the short-circuit electromotive force impact occurring, has strengthened the intensity of conductor support unit 201 greatly; And in the size that does not enlarge casing 101, guaranteed bus can satisfy reach relatively between phase and phase between leakage under the high pollution environment than the requirement of distance.
Preferably, as shown in Figure 2, two vertical brace summers 222 are fixed in the casing 101 through fixed support 203.
In order to improve the insulation property of supporting insulator of the present invention, conductor support unit 201 integral body are processed by insulating material.Preferably, this insulating material be sheet molding compound (Sheet molding compound, SMC).Said fixed support 203 can be processed by aluminium alloy.
The primary raw material of this composite material of SMC is by GF (special yarn), UP (unsaturated-resin), low shrinkage additive, and MD (filler) and various auxiliary agent are formed.
Through utilizing SMC composite material particular performances; Solve wooden, steel, plastic material and be prone to shortcoming aging, perishable, that insulation is poor, cold resistance is poor, poor fire, life-span are lacked; Make the conductor support unit have absolute water-tight performance, Corrosion Protection, anti-electricity-theft performance, never need earth connection, specious.
The SMC composite material has following characteristic:
(1) various informative.Various resins, curing agent, modifier system almost can adapt to various application to the form requirement, and its scope can be from extremely low viscosity to high melting solid.
(2) solidify conveniently.Select various curing agent for use, epoxy-resin systems almost can solidify in 0～180 ℃ of temperature range.
(3) adhesion is strong.The intrinsic polarity hydroxyl and the existence of ehter bond make it have very high adhesion to various materials in the epoxy resin strand.Shrinkage during epoxy resin cure is low, and the internal stress of generation is little, and this also helps to improve adhesion strength.
(4) shrinkage is low.The reaction of epoxy resin and used curing agent is that the ring-opening polymerization through epoxy radicals in direct addition reaction or the molecular resin carries out, and does not have water or other volatile byproducts to emit.They are compared with unsaturated polyester resin, phenolic resins, in solidification process, demonstrate very low shrinkage (less than 2%).
(5) mechanical property is good.Epoxy-resin systems after the curing has excellent mechanical property.
Employed SMC composite material has the following characteristic that is beneficial to processing and uses among the present invention:
The mechanical performance of table 1SMC composite material
| Sequence number | Performance | Unit | Satisfy value |
| 1 | Tensile modulus of elasticity * | MPa | ≥10500 |
| 2 | Tensile stress at break * | MPa | ≥70 |
| 3 | Fracture elongation strain * | ％ | ≥1.4 |
| 4 | Modulus of elasticity in comperssion | MPa | ≥10500 |
| 5 | Compressive strength | MPa | ≥165 |
| 6 | Modulus of elasticity in static bending * | MPa | ≥10500 |
| 7 | Bending strength * | MPa | ≥170 |
| 8 | Simple beam impact strength (non-notch) * | kJ/m 2 | ≥90 |
The hot property of table 2SMC composite material
| Sequence number | Performance | Unit | Satisfy value |
| ?1 | Load deformation temperature (Tff 1.8) * | ?℃ | ≥180 |
| ?2 | Thermal linear expansion coefficient | ?10-6/K | ≤18 |
| ?3 | Temperature index (TI) | ?- | ≥130 |
The electrical property of table 3SMC composite material
| Sequence number | Performance | Unit | Satisfy value |
| ?1 | Electrical strength (in the normality oil) * | kV/mm | ≥20 |
| ?2 | Relative permittivity (100Hz) | - | ≤4.5 |
| ?3 | Dielectric dissipation factor (100Hz) | - | ≤0.02 |
| ?4 | The insulation resistance normality | ?Ω | ≥1.0×1013 |
| After the insulation resistance immersion | ?Ω | ≥1.0×1012 | |
| ?5 | Specific insulation * | ?Ω·m | ≥1.0×1012 |
| ?6 | Surface resistivity * | ?Ω | ≥1.0×1012 |
| ?7 | Anti-electric trace index (PTI) | ?- | ≥600 |
| ?8 | Anti-electric traceization | Level | Be not less than 1A2.5 |
| ?9 | The * of anti-electric arc | ?S | ≥180 |
The combustibility and the combustion characteristics of table 4SMC composite material
| Sequence number | Performance | Unit | Satisfy value |
| ?1 | Flammability * | Level | No less than V0 |
| ?2 | Red-hot excellent * | Level | No less than BH2-10 |
| ?3 | Oxygen index | ％ | ≥28 |
| ?4 | The glowing filament flammability test | ℃ | ≥850 |
The physicochemical property of table 5SMC composite material
| Sequence number | Performance | Unit | Satisfy value |
| 1 | Density * | g/cm3 | 1.70～1.95 |
| 2 | Molding shrinkage * | ％ | ≤0.12 |
| 3 | Water absorption | ％ | ≤0.2 |
The rheology and the operational characteristic of table 6SMC composite material
| Sequence number | Performance | Unit | Satisfy value |
| 1 | Content of glass fiber | ％ | 32±2.5 |
Through using SMC to make the conductor support unit among the present invention, supporting insulator of the present invention has following performance:
The electrical characteristic of table 7 conductor support unit
The mechanical property of table 8 conductor support unit
Through using SMC to make the conductor support unit among the present invention; Three conductor support units of the present invention can adopt same mold integral compacting to form; The employed stent-type insulator of the bus of same specification scale error everywhere almost can be ignored; Thereby improved the universality of product, reduced cost.
Connect into firm integral body between supporting insulator that is used for cast conductor common box bus of the present invention and cast conductor, the casing, can firm support be provided, thereby promoted the ability that bus tolerance short-circuit electromotive force impacts the cast conductor that is positioned at casing.
The supporting insulator that is used for cast conductor common box bus of the present invention bus between phase and phase, and ground between all be provided with the umbrella skirt construction that insulation function is provided, improved the insulation level and the reliability of operation of cast conductor common box bus effectively.
The present invention adopts sheet molding compound (Sheet molding compound; SMC) as the insulating material of making the conductor support unit; Solve the shortcomings such as aging, perishable, that insulation is poor, cold resistance is poor, poor fire, life-span are lacked that are prone to of traditional material such as wooden, plastics, can improve the insulation level and the reliability of operation of cast conductor common box bus.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (10)
1. the supporting insulator of a cast conductor common box bus, said cast conductor common box bus comprises casing and is positioned at three cast conductors of casing, it is characterized in that,
Said supporting insulator comprises:
Be installed in each cast conductor below respectively, be used to support three conductor support units of cast conductor,, and said support frame is fixed in the fixed support in the said casing said three support frames that the conductor support unit links together;
Each conductor support unit comprises the semicircular conductor fixed groove of the said cast conductor of fitting and is positioned at first umbrella skirt construction of said semicircular conductor fixed groove below.
2. the supporting insulator of cast conductor common box bus according to claim 1; It is characterized in that; Each said conductor support unit comprises further and is used for said cast conductor is pressed together on the pressure ring in the said semicircular conductor fixed groove that said pressure ring is connected through securing member with said semicircular conductor fixed groove.
3. the supporting insulator of cast conductor common box bus according to claim 2 is characterized in that, the outer surface of said cast conductor further comprises the supporting bead of the said cast conductor of fitting,
The internal diameter of said supporting bead is identical with the external diameter of said cast conductor, and its external diameter is identical with the internal diameter of said semicircular conductor fixed groove.
4. the supporting insulator of cast conductor common box bus according to claim 2 is characterized in that said securing member is processed by nonmagnetic steel.
5. the supporting insulator of cast conductor common box bus according to claim 1 is characterized in that, connects through second umbrella skirt construction between per two adjacent conductor support units,
The two ends of second umbrella skirt construction are connected with the semicircular conductor fixed groove of said two adjacent conductor support units respectively.
6. the supporting insulator of cast conductor common box bus according to claim 5 is characterized in that said support frame comprises horizontal shore, and the vertical brace summer that vertically extends from the two ends of horizontal shore,
The bottom of first umbrella skirt construction of each conductor support unit all is fixedly connected with said horizontal shore,
Two conductor support units that are positioned at the outside in three conductor support units are fixedly connected with said vertical brace summer through one the 3rd umbrella skirt construction respectively.
7. the supporting insulator of cast conductor common box bus according to claim 6 is characterized in that, said two vertical brace summers are fixed in the casing through said fixed support.
8. according to the supporting insulator of the described cast conductor of arbitrary claim common box bus in the claim 1 to 7, it is characterized in that said conductor support unit is processed by insulating material.
9. the supporting insulator of cast conductor common box bus according to claim 8 is characterized in that, said insulating material is a sheet molding compound.
10. the supporting insulator of cast conductor common box bus according to claim 8 is characterized in that said fixed support is processed by aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110375123 CN102509593B (en) | 2011-11-23 | 2011-11-23 | Support insulator of tubular conductor non-segregated bus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110375123 CN102509593B (en) | 2011-11-23 | 2011-11-23 | Support insulator of tubular conductor non-segregated bus |
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| CN102509593A true CN102509593A (en) | 2012-06-20 |
| CN102509593B CN102509593B (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110375123 Active CN102509593B (en) | 2011-11-23 | 2011-11-23 | Support insulator of tubular conductor non-segregated bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353614A (en) * | 2017-08-10 | 2017-11-17 | 河北立格新材料科技股份有限公司 | A kind of ship warning device using SMC composites |
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| CN2227372Y (en) * | 1995-04-01 | 1996-05-15 | 阜新封闭母线厂 | Common case insulation sealed bus |
| CN2891424Y (en) * | 2006-04-12 | 2007-04-18 | 江苏长江沃特电气有限公司 | Round casing collocated enclosed busbars |
| CN201017733Y (en) * | 2007-02-16 | 2008-02-06 | 马锡柱 | Novel high voltage full behavior DMC bus supporting insulator |
| CN201113291Y (en) * | 2007-06-15 | 2008-09-10 | 北京电研华源电力技术有限公司 | Outdoor common box type sulfur hexafluoride multi-loop ring net cabinet |
| CN201238173Y (en) * | 2008-07-29 | 2009-05-13 | 慈溪市新兴电力配件厂 | Totally-enclosed hardware fittings-free insulator propping type enclosure busbar |
| CN201616630U (en) * | 2009-10-20 | 2010-10-27 | 平高集团威海高压电器有限公司 | Common box bus-bar |
| CN201623376U (en) * | 2010-01-26 | 2010-11-03 | 中国西电电气股份有限公司 | Three-phase common main bus interior conductor connecting structure |
-
2011
- 2011-11-23 CN CN 201110375123 patent/CN102509593B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227372Y (en) * | 1995-04-01 | 1996-05-15 | 阜新封闭母线厂 | Common case insulation sealed bus |
| CN2891424Y (en) * | 2006-04-12 | 2007-04-18 | 江苏长江沃特电气有限公司 | Round casing collocated enclosed busbars |
| CN201017733Y (en) * | 2007-02-16 | 2008-02-06 | 马锡柱 | Novel high voltage full behavior DMC bus supporting insulator |
| CN201113291Y (en) * | 2007-06-15 | 2008-09-10 | 北京电研华源电力技术有限公司 | Outdoor common box type sulfur hexafluoride multi-loop ring net cabinet |
| CN201238173Y (en) * | 2008-07-29 | 2009-05-13 | 慈溪市新兴电力配件厂 | Totally-enclosed hardware fittings-free insulator propping type enclosure busbar |
| CN201616630U (en) * | 2009-10-20 | 2010-10-27 | 平高集团威海高压电器有限公司 | Common box bus-bar |
| CN201623376U (en) * | 2010-01-26 | 2010-11-03 | 中国西电电气股份有限公司 | Three-phase common main bus interior conductor connecting structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353614A (en) * | 2017-08-10 | 2017-11-17 | 河北立格新材料科技股份有限公司 | A kind of ship warning device using SMC composites |
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| CN102509593B (en) | 2013-09-25 |
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Application publication date: 20120620 Assignee: Hebei Jingfeng Electric Power Equipment Co., Ltd. Assignor: Guangdong Datang International Chaozhou Power Generation Co., Ltd.| Beijing Power Equipment General Factory Contract record no.: 2015990000086 Denomination of invention: Support insulator of tubular conductor non-segregated bus Granted publication date: 20130925 License type: Exclusive License Record date: 20150228 |
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Address after: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee after: Co., Ltd of Beijing Electrical Equipment Factory Patentee after: GUANGDONG DATANG INTERNATIONAL CHAOZHOU POWER GENERATION CO., LTD. Address before: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee before: Beijing Electric Power Equipment General Factory Patentee before: GUANGDONG DATANG INTERNATIONAL CHAOZHOU POWER GENERATION CO., LTD. |